CN112095286B

CN112095286B - Laundry treating apparatus, operation control method, system thereof, and storage medium

Info

Publication number: CN112095286B
Application number: CN201910465619.2A
Authority: CN
Inventors: 戴超
Original assignee: Wuxi Filin Electronics Co Ltd
Current assignee: Wuxi Filin Electronics Co Ltd
Priority date: 2019-05-30
Filing date: 2019-05-30
Publication date: 2023-05-02
Anticipated expiration: 2039-05-30
Also published as: CN112095286A

Abstract

The invention provides an operation control method of a clothes treatment device, comprising the following steps: after the clothes treatment device enters a dehydration mode and the running rotating speed of the motor is higher than a first preset rotating speed, acquiring a rotating speed fluctuation value of the motor in real time; and controlling the operation of the clothes treating apparatus according to the rotation speed fluctuation value. According to the technical scheme, the eccentric detection of the cylinder body is carried out in any dehydration period after the motor enters the high-speed dehydration stage, the dehydration gear (motor rotating speed) is dynamically adjusted according to the actual eccentric condition of the cylinder body, the optimal dehydration rotating speed gear is accurately set, an excellent dehydration effect is achieved, meanwhile, larger noise and vibration of the clothes treatment device due to serious cylinder body eccentricity are effectively reduced, and the service life of the motor is prolonged.

Description

Laundry treating apparatus, operation control method, system thereof, and storage medium

Technical Field

The present invention relates to the field of laundry treatment apparatuses, and more particularly, to an operation control method of a laundry treatment apparatus, an operation control system of a laundry treatment apparatus, and a computer-readable storage medium.

Background

When the load of the variable frequency motor is unbalanced, the higher the rotating speed of the variable frequency motor is, the larger the vibration and noise of the system are, so that the service life of the equipment is reduced, and the situation is particularly remarkable on the clothes treatment device.

In the related art, when the laundry treating apparatus is in the low-speed dehydrating stage, the amount of load unbalance is detected according to the rotation speed or torque signal of the motor, and then it is judged whether to enter the high-speed dehydrating stage according to the amount of unbalance. However, when the laundry treating apparatus enters the high-speed dehydrating stage, since the water absorption rate of laundry is different, the unbalance amount detected in the low-speed dehydrating stage is changed along with the loss of water amount, so that the load unbalance state of the laundry treating apparatus in the high-speed dehydrating stage cannot be accurately detected, and once the laundry treating apparatus has a large eccentricity, vibration and noise of the laundry treating apparatus are caused to affect the service life of the laundry treating apparatus.

Disclosure of Invention

The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

To this end, a first aspect of the present invention is to provide an operation control method of a laundry treatment apparatus.

A second aspect of the present invention is to provide an operation control system of a laundry treating apparatus.

A third aspect of the present invention is to provide a laundry treating apparatus.

A fourth aspect of the present invention is to provide a computer-readable storage medium.

In view of the above, according to a first aspect of the present invention, there is provided an operation control method of a laundry treating apparatus, wherein the laundry treating apparatus includes a drum and a motor driving the drum to rotate, the control method comprising: after the clothes treatment device enters a dehydration mode and the running rotating speed of the motor reaches a first preset rotating speed, acquiring a rotating speed fluctuation value of the motor in real time; and controlling the operation of the clothes treating apparatus according to the rotation speed fluctuation value.

According to the operation control method of the clothes treatment device, after the clothes treatment device enters the dehydration mode, and the operation rotating speed of the motor reaches the first preset rotating speed, namely, the motor enters the high-speed dehydration stage, the first preset rotating speed can be set in the factory or in the use process of the clothes treatment device according to actual requirements of different washing modes. After the motor enters a high-speed dehydration stage, the rotation speed fluctuation value of the motor is obtained in real time, and the operation of the clothes treatment device is controlled according to the rotation speed fluctuation value, such as the operation rotation speed of the motor, shaking and scattering of the underwear, adjustment of the water injection quantity and the like. Because the eccentricity of the cylinder body can influence the rotation speed fluctuation value of the motor in the high-speed dehydration stage, the rotation speed fluctuation value of the motor represents the eccentricity of the current cylinder body to a certain extent, and the operation of the clothes treatment device is controlled according to the rotation speed fluctuation value obtained in real time, so that the eccentricity of the cylinder body in the high-speed dehydration stage can be effectively relieved. The control method can be carried out in any dehydration period after the motor enters the high-speed dehydration stage, dynamically adjusts the dehydration gear according to the actual eccentric condition of the cylinder, accurately sets the optimal dehydration rotating speed gear, realizes excellent dehydration effect, effectively reduces larger noise and vibration generated by the clothes treatment device due to serious cylinder eccentricity, and prolongs the service life of the motor. Preferably, the rotation speed can be adjusted by adjusting different rotation speed gears of the motor, the rotation speed of the motor can be adjusted by a certain step frequency, or the rotation speed of the motor can be adjusted by other methods. By acquiring the rotating speed fluctuation value of the motor, the accuracy of detecting the state of the motor is improved, the accuracy of detecting the eccentric condition of the cylinder in the high-speed dehydration stage is further improved, and the effect of preventing the cylinder from being eccentric in the high-speed dehydration stage is achieved. Further, the state of the current dehydrated clothes (the state of water loss on the clothes) can be accurately measured through the rotating speed fluctuation value of the motor, and the clothes treatment device can judge the state of the current dehydrated clothes according to the rotating speed fluctuation value of the motor, so that the rotating speed is intelligently regulated, and the clothes dehydration efficiency is improved.

In the above technical solution, preferably, the method for acquiring the rotational speed fluctuation value of the motor in real time specifically includes: in a rotation period of the motor, acquiring the maximum running rotation speed and the minimum running rotation speed of the motor in real time; calculating a difference value between the maximum running rotating speed and the minimum running rotating speed to serve as a single period rotating speed fluctuation value; and filtering the single-period rotation speed fluctuation value of a plurality of rotation periods in the same dehydration period to obtain the rotation speed fluctuation value.

In the technical scheme, the method for calculating the rotation speed fluctuation comprises the following steps: and in one rotation period of the motor, obtaining the maximum and minimum running rotation speeds of the motor in real time, calculating the difference value of the maximum and minimum running rotation speeds, and filtering the difference value of a plurality of rotation periods in the same dehydration period to obtain a rotation speed filtering value. One rotation period is a period of one rotation (360 degrees) of the motor shaft, and the single period rotation speed fluctuation value of a plurality of rotation periods is filtered to obtain a rotation speed fluctuation value, so that the influence of other external factors on the rotation speed fluctuation value can be eliminated.

The specific calculation formula of the rotational speed fluctuation value is as follows:

Δw＝(Δw1+Δw2+…Δwn)/(t ₁ +t ₂ …t _n ) (1)

wherein Deltaw is the fluctuation value of the rotating speed, t _n For the running time of the nth rotation period after the motor running is stable, Δw1 is the running time of the 1 st rotation period after the motor running is stable (after the first preset rotating speed is reached, the rotating speed difference value of the motor is calculated every a first preset time period, the motor running is considered stable based on the rotating speed difference value being reduced to a difference value threshold value), and Δwn is the rotating speed fluctuation value of the nth rotation period after the motor running is stable. The subsequent rotational speed fluctuation value is carried out in a push stack mode, namely, in the formula (1), the first rotational speed fluctuation value Deltaw 1 is discarded, and the n+1th rotational speed fluctuation value Deltawn+1 is increased.

Similarly, the calculation formula of the rotational speed fluctuation value always includes rotational speed fluctuation values of n rotational periods. The specific value of n can be set according to the actual working requirement. The value of Deltaw obtained by the formula is a value which changes in real time, and the eccentricity of the cylinder is more accurately reflected, so that the rotating speed of the motor is adjusted in real time to overcome the eccentricity of the cylinder.

In the above technical solution, preferably, the specific step of controlling the operation of the laundry treatment apparatus according to the rotational speed fluctuation value includes: controlling the motor to stop rotating based on the condition that the rotating speed fluctuation value is greater than or equal to a first preset threshold value, and controlling the clothes treatment device to perform eccentric adjustment operation; controlling the motor to keep the current running rotating speed based on the condition that the rotating speed fluctuation value is smaller than a first preset threshold value and larger than or equal to a second preset threshold value; and controlling the motor to accelerate to the target rotating speed of the next dehydration period after the current dehydration period is ended based on the condition that the rotating speed fluctuation value is smaller than a second preset threshold value.

In this technical scheme, when the rotational speed fluctuation value is greater than or equal to a first preset threshold value, it indicates that the eccentricity of the cylinder is very serious, so that the motor is controlled to stop, and the laundry treatment device is controlled to perform eccentric adjustment operation, and after the eccentric adjustment operation, dehydration is performed again, where a specific eccentric adjustment process may be: adjusting the laundry (e.g., controlling the laundry treating apparatus to perform a shaking operation), and/or adjusting the amount of water injected, etc. When the rotational speed fluctuation value is smaller than a first preset threshold value, whether the rotational speed fluctuation value is smaller than a second preset threshold value is further judged, and when the rotational speed fluctuation value is smaller than the first preset threshold value and larger than or equal to the second preset threshold value, the fact that the eccentricity of clothes dehydration in the clothes treatment device is not serious is indicated, or the clothes are dehydrated more, the weight is reduced, the influence on the motor is small, the generated noise is small, and the motor can be controlled to keep the current running rotational speed at the moment. When the fluctuation value of the rotation speed is smaller than a second preset threshold value, the condition of eccentricity in the clothes treatment device is indicated to be weaker, and the rotation speed of dehydration is smaller at the moment, the rotation speed can be continuously increased to improve the dehydration effect, and the specific method for increasing the rotation speed can be as follows: and controlling the motor to accelerate to the target rotating speed of the next dehydration period after the operation of the current dehydration period is finished, or controlling the motor to gradually increase the rotating speed according to a certain step frequency, and the like. The first preset threshold and the second preset threshold may be determined according to actual conditions (motor model, capacity of the dewatering drum, actual voltage used, etc.).

In the above technical solution, preferably, the specific step of controlling the operation of the motor according to the rotational speed fluctuation value further includes: controlling the motor to slow down to the target rotation speed of the previous dehydration period based on the condition that the rotation speed fluctuation value is smaller than a first preset threshold value and larger than or equal to a third preset threshold value; wherein the third preset threshold is greater than the second preset threshold.

In the technical scheme, after the rotation speed fluctuation value is smaller than the first preset threshold value, whether the rotation speed fluctuation value is smaller than the third preset threshold value is further judged, when the rotation speed fluctuation value is smaller than the first preset threshold value and larger than or equal to the third preset threshold value, the fact that the eccentricity condition of clothes dehydration in the clothes treatment device is serious is indicated, the influence on the motor is large, the generated noise is large, but the motor does not need to be stopped, the motor is controlled to slow down, and noise generated by the operation of the motor and vibration of the clothes treatment device are reduced. The specific method for reducing the rotation speed can be as follows: the motor is controlled to slow down to the target rotation speed of the last dehydration period, or the motor is controlled to gradually slow down according to a certain step frequency, and the like. Wherein, the third preset threshold value is larger than the second preset threshold value, and the first preset rotating speed, the second preset rotating speed and the third preset rotating speed are determined according to actual conditions (motor model, dewatering cylinder capacity, actual use voltage and the like).

In the above aspect, preferably, the operation control method of the laundry treating apparatus further includes: and controlling the motor to maintain the current running rotating speed based on the condition that the current dehydration period is the target dehydration period.

In the technical scheme, after the rotating speed of the motor reaches the preset rotating speed of a user, the motor is controlled to keep the current rotating speed until the dehydration operation is completed.

In the above technical solution, preferably, after the step of the laundry treating apparatus entering the dehydration mode and the operation rotation speed of the motor reaching the first preset rotation speed, the method further includes: and starting the motor to run at a first preset rotating speed, calculating the rotating speed difference value of the motor once every a first preset time length, and executing the step of acquiring the rotating speed fluctuation value of the motor in real time after the rotating speed difference value is reduced to a difference value threshold value.

In the technical scheme, the motor starts to operate at a first preset rotating speed, a rotating speed difference value of the motor is calculated every a first preset time period, and after the rotating speed difference value is reduced to a difference value threshold value, the step of acquiring the rotating speed fluctuation value of the motor in real time is executed. After the rotation speed difference value is reduced to the difference value threshold value, the motor can be judged to be stable in operation, and the operation time after the motor is stable is recorded, the step of acquiring the rotation speed fluctuation value of the motor in real time is executed, so that the phenomenon that the rotation speed fluctuation value of the motor is inaccurate due to the fact that the influence on the operation speed of the motor is large due to the fact that the rotation speed fluctuation value of the motor is large in the earlier stage is prevented. The first preset duration and the difference threshold are determined according to working experience or actual conditions.

In the above technical solution, preferably, before the laundry treating apparatus enters the dehydration mode and the operation rotation speed of the motor does not reach the first preset rotation speed, the method further includes: detecting torque fluctuation or rotation speed fluctuation of the motor in real time to obtain the eccentricity of the clothes treating apparatus; and under the condition that the eccentric degree meets the high-speed dehydration condition, controlling the motor to accelerate to a first preset rotating speed.

In the technical scheme, before the clothes treating apparatus enters the high-speed dehydration stage, the eccentricity detection is firstly carried out in the low-speed stage, after judging that the operation dehydration is allowed (the eccentricity meets the condition), the clothes treating apparatus has the condition of entering the high-speed dehydration stage, the motor is accelerated to the first preset rotation speed, and after the clothes treating apparatus enters the high-speed dehydration mode, the rotation speed fluctuation value of the motor is obtained in real time, so that the eccentricity degree of the cylinder body in the high-speed dehydration stage is obtained. The specific method for eccentric detection in the low-speed stage comprises the following steps: torque fluctuation or rotation speed fluctuation of the motor is detected in real time to obtain the eccentricity degree of the laundry treating apparatus. The eccentric detection is carried out once before the control motor accelerates to the first preset rotating speed, so that the aim is to prevent the eccentric degree of the cylinder from entering into a high-speed dehydration stage under the condition of too serious, and the vibration of the clothes treatment device is too large, so that the service life of the motor and the use feeling of a user are influenced.

According to a second aspect of the present invention, there is provided an operation control system of a laundry treating apparatus including a drum and a motor driving the drum to rotate, the control apparatus comprising: the detection module and the control module; the detection module is used for acquiring a rotational speed fluctuation value of the motor in real time after the clothes treatment device enters a dehydration mode and the running rotational speed of the motor reaches a first preset rotational speed; the control module is used for controlling the operation of the clothes treatment device according to the rotation speed fluctuation value.

After the clothes treatment device enters the dehydration mode and the running rotating speed of the motor reaches the first preset rotating speed, the running control system of the clothes treatment device means that the motor enters a high-speed dehydration stage, and the first preset rotating speed can be set in the factory or in the using process of the clothes treatment device according to actual requirements of different washing modes. After the motor enters a high-speed dehydration stage, the rotating speed fluctuation value of the motor is obtained in real time through the detection module, and the operation of the clothes treatment device is controlled through the control module according to the rotating speed fluctuation value, such as the operation rotating speed of the motor, shaking and scattering of the clothes in the drum, adjustment of the water injection quantity and the like. Because the eccentricity of the cylinder body can influence the rotation speed fluctuation value of the motor in the high-speed dehydration stage, the rotation speed fluctuation value of the motor represents the eccentricity of the current cylinder body to a certain extent, and the control module controls the operation of the clothes treatment device according to the rotation speed fluctuation value obtained in real time, so that the eccentricity of the cylinder body in the high-speed dehydration stage can be effectively relieved. The control method can be carried out in any dehydration period after the motor enters the high-speed dehydration stage, dynamically adjusts the dehydration gear according to the actual eccentric condition of the cylinder, accurately sets the optimal dehydration rotating speed gear, realizes excellent dehydration effect, effectively reduces larger noise and vibration generated by the clothes treatment device due to serious cylinder eccentricity, and prolongs the service life of the motor. Preferably, the rotation speed can be adjusted by adjusting different rotation speed gears of the motor, the rotation speed of the motor can be adjusted by a certain step frequency, or the rotation speed of the motor can be adjusted by other methods. By acquiring the rotating speed fluctuation value of the motor, the accuracy of detecting the state of the motor is improved, the accuracy of detecting the eccentric condition of the cylinder in the high-speed dehydration stage is further improved, and the effect of preventing the cylinder from being eccentric in the high-speed dehydration stage is achieved. Further, the state of the current dehydrated clothes (the state of water loss on the clothes) can be accurately measured through the rotating speed fluctuation value of the motor, and the clothes treatment device can judge the state of the current dehydrated clothes according to the rotating speed fluctuation value of the motor, so that the rotating speed is intelligently regulated, and the clothes dehydration efficiency is improved.

In the above technical solution, preferably, the detection module is further configured to: in a rotation period of the motor, acquiring the maximum running rotation speed and the minimum running rotation speed of the motor in real time; calculating a difference value between the maximum running rotating speed and the minimum running rotating speed to serve as a single period rotating speed fluctuation value; and filtering the single-period rotation speed fluctuation value of a plurality of rotation periods in the same dehydration period to obtain the rotation speed fluctuation value.

In the technical scheme, the method for calculating the rotation speed fluctuation by the detection module comprises the following steps: in one rotation period of the motor, the detection module acquires the maximum and minimum running rotation speeds of the motor in real time, calculates the difference value between the maximum and minimum running rotation speeds, and filters the difference value of a plurality of rotation periods in the same dehydration period to obtain a rotation speed filtering value. Wherein, a rotation period is a period that the motor shaft rotates by one circle (360 degrees), the detection module filters (averages) the single period rotation speed fluctuation value of a plurality of rotation periods to obtain the rotation speed fluctuation value, and the influence of other external factors on the rotation speed fluctuation value can be eliminated.

Δw＝(Δw1+Δw2+…Δwn)/(t ₁ +t ₂ …t _n ) (1)

wherein Deltaw is the fluctuation value of the rotating speed, t _n For the running time of the nth rotation period after the motor is running stably (after the first preset rotation speed is reached, the rotation speed difference value of the motor is calculated every first preset time, the motor is considered to be running stably after the rotation speed difference value is reduced to a difference value threshold), Δw1 is the rotation speed fluctuation value of the 1 st rotation period after the motor is running stably, and Δwn is the rotation speed fluctuation value of the nth rotation period after the motor is running stably. The subsequent rotational speed fluctuation value is carried out in a push stack mode, namely, in the formula (1), the first rotational speed fluctuation value Deltaw 1 is discarded, and the n+1th rotational speed fluctuation value Deltawn+1 is increased.

In the above technical solution, preferably, the control module is further configured to: controlling the motor to stop rotating based on the condition that the rotating speed fluctuation value is greater than or equal to a first preset threshold value, and controlling the clothes treatment device to perform eccentric adjustment operation; controlling the motor to keep the current running rotating speed based on the condition that the rotating speed fluctuation value is smaller than a first preset threshold value and larger than or equal to a second preset threshold value; and controlling the motor to accelerate to the target rotating speed of the next dehydration period after the current dehydration period is ended based on the condition that the rotating speed fluctuation value is smaller than a second preset threshold value.

In this technical scheme, when the rotational speed fluctuation value is greater than or equal to a first preset threshold value, it indicates that the eccentricity of the cylinder is very serious, so that the control module controls the motor to stop rotating and controls the laundry treatment device to perform eccentric adjustment operation, and after the eccentric adjustment operation, dehydration is performed again, where a specific eccentric adjustment process may be: the control module controls the clothes treatment device to adjust clothes (such as controlling the clothes treatment device to shake-out) and/or adjust the water injection amount. When the rotational speed fluctuation value is smaller than a first preset threshold value, whether the rotational speed fluctuation value is smaller than a second preset threshold value is further judged, and when the rotational speed fluctuation value is smaller than the first preset threshold value and larger than or equal to the second preset threshold value, the fact that the eccentric condition of clothes dehydration in the clothes treatment device is not serious is indicated, or the clothes are dehydrated more, the weight is reduced, the influence on the motor is small, the generated noise is small, and at the moment, the control module can control the motor to keep the current running rotational speed. When the fluctuation value of the rotation speed is smaller than a second preset threshold value, the condition of eccentricity in the clothes treatment device is indicated to be weaker, and the rotation speed of dehydration is smaller at the moment, the rotation speed can be continuously increased to improve the dehydration effect, and the specific method for increasing the rotation speed can be as follows: the control module controls the motor to accelerate to the target rotating speed of the next dehydration period after the operation of the current dehydration period is finished, or controls the motor to gradually increase the rotating speed according to a certain step frequency, and the like. The first preset threshold and the second preset threshold may be determined according to actual conditions (motor model, capacity of the dewatering drum, actual voltage used, etc.).

In the above technical solution, preferably, the control module is further configured to: controlling the motor to slow down to the target rotation speed of the previous dehydration period based on the condition that the rotation speed fluctuation value is smaller than a first preset threshold value and larger than or equal to a third preset threshold value; wherein the third preset threshold is greater than the second preset threshold.

In the technical scheme, after the rotation speed fluctuation value is smaller than the first preset threshold value, whether the rotation speed fluctuation value is smaller than the third preset threshold value is further judged, when the rotation speed fluctuation value is smaller than the first preset threshold value and larger than or equal to the third preset threshold value, the eccentricity condition of clothes dehydration in the clothes treatment device is severe, the influence on the motor is large, the generated noise is large, but the motor does not need to be stopped, and at the moment, the control module can control the motor to reduce the speed, and noise generated by the operation of the motor and vibration of the clothes treatment device are reduced. The specific method for reducing the rotation speed can be as follows: the control module controls the motor to slow down to the target rotating speed of the previous dehydration period, or controls the motor to gradually slow down the rotating speed according to a certain step frequency, and the like. Wherein, the third preset threshold value is larger than the second preset threshold value, and the first preset rotating speed, the second preset rotating speed and the third preset rotating speed are determined according to actual conditions (motor model, dewatering cylinder capacity, actual use voltage and the like).

In the above technical solution, preferably, the control module is further configured to: and controlling the motor to maintain the current running rotating speed based on the condition that the current dehydration period is the target dehydration period.

In the technical scheme, after the rotating speed of the motor reaches the preset rotating speed of a user, the control module controls the motor to keep the current rotating speed until the dehydration operation is completed.

In the above technical solution, preferably, the detection module is further configured to calculate a rotational speed difference of the motor once every a first preset duration when the motor starts to operate at a first preset rotational speed; the rotating speed detection module is also used for executing the step of acquiring the rotating speed fluctuation value of the motor in real time after the rotating speed difference value is reduced to the difference value threshold value.

In the technical scheme, the motor starts to run at a first preset rotating speed, the detecting module calculates a rotating speed difference value of the motor once every a first preset time period, and after the rotating speed difference value is reduced to a difference value threshold value, the step of acquiring the rotating speed fluctuation value of the motor in real time is executed. After the rotation speed difference value is reduced to the difference value threshold value, the motor can be judged to be stable in operation, and the operation time after the motor is stable is recorded, the step of acquiring the rotation speed fluctuation value of the motor in real time is executed, so that the phenomenon that the rotation speed fluctuation value of the motor is inaccurate due to the fact that the influence on the operation speed of the motor is large due to the fact that the rotation speed fluctuation value of the motor is large in the earlier stage is prevented. The first preset duration and the difference threshold are determined according to working experience or actual conditions.

In the above technical solution, preferably, the detection module is further configured to detect torque fluctuation or rotation speed fluctuation of the motor in real time, so as to obtain an eccentric degree of the laundry treatment device; and the control module is also used for controlling the motor to accelerate to a first preset rotating speed under the condition that the eccentric degree meets the high-speed dehydration condition.

In the technical scheme, before the clothes treating apparatus enters the high-speed dehydration stage, the eccentricity detection is firstly carried out in the low-speed stage, after judging that the operation dehydration is allowed (the eccentricity meets the condition), the clothes treating apparatus has the condition of entering the high-speed dehydration stage, the motor is accelerated to the first preset rotation speed, and after the clothes treating apparatus enters the high-speed dehydration mode, the rotation speed fluctuation value of the motor is obtained in real time, so that the eccentricity degree of the cylinder body in the high-speed dehydration stage is obtained. The specific method for eccentric detection in the low-speed stage comprises the following steps: the detection module detects torque fluctuation or rotation speed fluctuation of the motor in real time to obtain the eccentricity degree of the clothes treating apparatus. The eccentric detection is carried out once before the control motor accelerates to the first preset rotating speed, so that the aim is to prevent the eccentric degree of the cylinder from entering into a high-speed dehydration stage under the condition of too serious, and the vibration of the clothes treatment device is too large, so that the service life of the motor and the use feeling of a user are influenced.

According to a third aspect of the present invention, there is provided a laundry treating apparatus comprising the operation control system of any one of the laundry treating apparatuses described above.

The laundry device provided by the invention comprises the operation control system of any one of the laundry devices, and has all the beneficial technical effects of the operation control system of the laundry device, and the description is omitted herein.

According to a fourth aspect of the present invention there is provided a computer readable storage medium having stored thereon a computer program which when executed by a processor performs the steps of the method according to any of the above claims.

The computer readable storage medium provided by the invention can realize the steps of the method according to any of the above technical schemes when the computer program stored on the computer readable storage medium is executed by the processor, so that the method has all the beneficial technical effects of the operation control method of the clothes treating apparatus, and the detailed description is omitted.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

Fig. 1 illustrates a schematic flowchart of an operation control method of a laundry treating apparatus according to an embodiment of the present invention;

fig. 2 is a schematic flowchart showing an operation control method of a laundry treating apparatus according to another embodiment of the present invention;

fig. 3 is a schematic flowchart showing an operation control method of a laundry treating apparatus according to still another embodiment of the present invention;

fig. 4 is a schematic flowchart showing an operation control method of a laundry treating apparatus according to still another embodiment of the present invention;

fig. 5 is a schematic flowchart showing an operation control method of a laundry treating apparatus according to still another embodiment of the present invention;

fig. 6 is a schematic flowchart showing an operation control method of a laundry treating apparatus according to still another embodiment of the present invention;

fig. 7 is a schematic flowchart showing an operation control method of a laundry treating apparatus according to still another embodiment of the present invention;

fig. 8 illustrates a graph showing an operation rotation speed of a motor of a laundry treating apparatus according to an embodiment of the present invention with time;

fig. 9 illustrates a motor speed fluctuation graph of a laundry treating apparatus according to an embodiment of the present invention

Fig. 10 illustrates a schematic block diagram of an operation control system of a laundry treating apparatus according to an embodiment of the present invention;

FIG. 11 shows a schematic block diagram of a laundry treating apparatus according to an embodiment of the present invention;

FIG. 12 illustrates an off-center sensing control block diagram according to one embodiment of the invention;

FIG. 13 shows a full speed range eccentricity detection flow chart according to one embodiment of the invention;

FIG. 14 shows a flowchart of eccentricity detection software according to one embodiment of the present invention.

Detailed Description

So that the manner in which the above recited aspects, features and advantages of the present invention can be understood in detail, a more particular description of the invention, briefly summarized below, may be had by reference to the appended drawings. It should be noted that, without conflict, the embodiments of the present invention and features in the embodiments may be combined with each other.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.

An embodiment of the first aspect of the present invention provides an operation control method of a laundry treating apparatus.

Fig. 1 illustrates a schematic flowchart of an operation control method of a laundry treating apparatus according to an embodiment of the present invention.

As shown in fig. 1, the operation control method of the laundry treating apparatus according to an embodiment of the present invention includes:

s102, after the clothes treatment device enters a dehydration mode and the running rotating speed of a motor reaches a first preset rotating speed, acquiring a rotating speed fluctuation value of the motor in real time;

s104, controlling the operation of the clothes treating apparatus according to the rotation speed fluctuation value.

In this embodiment, after the laundry treating apparatus enters the dehydration mode, and the running rotation speed of the motor reaches the first preset rotation speed, that means that the motor enters the high-speed dehydration stage, the first preset rotation speed may be set during the shipment or use of the laundry treating apparatus according to actual needs of different washing modes. After the motor enters a high-speed dehydration stage, the rotation speed fluctuation value of the motor is obtained in real time, and the operation of the clothes treatment device is controlled according to the rotation speed fluctuation value, such as the operation rotation speed of the motor, shaking and scattering of the underwear, adjustment of the water injection quantity and the like. Because the eccentricity of the cylinder body can influence the rotation speed fluctuation value of the motor in the high-speed dehydration stage, the rotation speed fluctuation value of the motor represents the eccentricity of the current cylinder body to a certain extent, and the operation of the clothes treatment device is controlled according to the rotation speed fluctuation value obtained in real time, so that the eccentricity of the cylinder body in the high-speed dehydration stage can be effectively relieved. The control method can be carried out in any dehydration period after the motor enters the high-speed dehydration stage, dynamically adjusts the dehydration gear according to the actual eccentric condition of the cylinder, accurately sets the optimal dehydration rotating speed gear, realizes excellent dehydration effect, effectively reduces larger noise and vibration generated by the clothes treatment device due to serious cylinder eccentricity, and prolongs the service life of the motor. Preferably, the rotation speed can be adjusted by adjusting different rotation speed gears of the motor, the rotation speed of the motor can be adjusted by a certain step frequency, or the rotation speed of the motor can be adjusted by other methods. By acquiring the rotating speed fluctuation value of the motor, the accuracy of detecting the state of the motor is improved, the accuracy of detecting the eccentric condition of the cylinder in the high-speed dehydration stage is further improved, and the effect of preventing the cylinder from being eccentric in the high-speed dehydration stage is achieved. Further, the state of the current dehydrated clothes (the state of water loss on the clothes) can be accurately measured through the rotating speed fluctuation value of the motor, and the clothes treatment device can judge the state of the current dehydrated clothes according to the rotating speed fluctuation value of the motor, so that the rotating speed is intelligently regulated, and the clothes dehydration efficiency is improved.

Fig. 2 is a schematic flowchart illustrating an operation control method of a laundry treating apparatus according to another embodiment of the present invention.

As shown in fig. 2, the operation control method of the laundry treating apparatus according to an embodiment of the present invention includes:

s202, the clothes treatment device enters a dehydration mode, and the running rotating speed of a motor reaches a first preset rotating speed;

s204, acquiring the maximum running rotating speed and the minimum running rotating speed of the motor in real time in one rotation period of the motor;

s206, calculating a difference value between the maximum running rotating speed and the minimum running rotating speed to serve as a single period rotating speed fluctuation value;

s208, filtering a single period rotation speed fluctuation value of a plurality of rotation periods in the same dehydration period to obtain a rotation speed fluctuation value;

s210, controlling the operation of the clothes treating apparatus according to the rotation speed fluctuation value.

In this embodiment, the method for calculating the rotation speed fluctuation specifically includes: and in one rotation period of the motor, obtaining the maximum and minimum running rotation speeds of the motor in real time, calculating the difference value of the maximum and minimum running rotation speeds, and filtering the difference value of a plurality of rotation periods in the same dehydration period to obtain a rotation speed filtering value. One rotation period is a period of one rotation (360 degrees) of the motor shaft, and the single period rotation speed fluctuation value of a plurality of rotation periods is filtered to obtain a rotation speed fluctuation value, so that the influence of other external factors on the rotation speed fluctuation value can be eliminated.

Δw＝(Δw1+Δw2+…Δwn)/(t ₁ +t ₂ …t _n ) (1)

Fig. 3 is a schematic flowchart illustrating an operation control method of a laundry treating apparatus according to another embodiment of the present invention.

As shown in fig. 3, the operation control method of the laundry treating apparatus according to an embodiment of the present invention includes:

s302, the clothes treatment device enters a dehydration mode, and the running rotating speed of a motor reaches a first preset rotating speed;

s304, acquiring the maximum running rotating speed and the minimum running rotating speed of the motor in real time in one rotation period of the motor;

s306, calculating a difference value between the maximum operation rotation speed and the minimum operation rotation speed to serve as a single period rotation speed fluctuation value;

s308, filtering a single period rotation speed fluctuation value of a plurality of rotation periods in the same dehydration period to obtain a rotation speed fluctuation value;

s310, judging whether the rotation speed fluctuation value is smaller than a first preset threshold value, if not, jumping to S312, and if yes, jumping to S314;

s312, controlling the motor to stop rotating and controlling the clothes treatment device to perform eccentric adjustment operation;

s314, judging whether the rotation speed fluctuation value is smaller than a second preset threshold value, if not, jumping to S316, and if yes, jumping to S318;

s316, controlling the motor to keep the current running rotating speed;

and S318, controlling the motor to accelerate to the target rotating speed of the next dehydration period after the current dehydration period is finished.

In this embodiment, when the rotational speed fluctuation value is equal to or greater than the first preset threshold value, it indicates that the eccentricity of the drum is very serious, so that the motor is controlled to stop, and the laundry treatment apparatus is controlled to perform the eccentricity adjustment operation, and after the eccentricity adjustment operation, the dehydration process is performed again, where a specific eccentricity adjustment process may be: adjusting the laundry (e.g., controlling the laundry treating apparatus to perform a shaking operation), and/or adjusting the amount of water injected, etc. When the rotational speed fluctuation value is smaller than a first preset threshold value, whether the rotational speed fluctuation value is smaller than a second preset threshold value is further judged, and when the rotational speed fluctuation value is smaller than the first preset threshold value and larger than or equal to the second preset threshold value, the fact that the eccentricity of clothes dehydration in the clothes treatment device is not serious is indicated, or the clothes are dehydrated more, the weight is reduced, the influence on the motor is small, the generated noise is small, and the motor can be controlled to keep the current running rotational speed at the moment. When the fluctuation value of the rotation speed is smaller than a second preset threshold value, the condition of eccentricity in the clothes treatment device is indicated to be weaker, and the rotation speed of dehydration is smaller at the moment, the rotation speed can be continuously increased to improve the dehydration effect, and the specific method for increasing the rotation speed can be as follows: and controlling the motor to accelerate to the target rotating speed of the next dehydration period after the operation of the current dehydration period is finished, or controlling the motor to gradually increase the rotating speed according to a certain step frequency, and the like. The first preset threshold and the second preset threshold may be determined according to actual conditions (motor model, capacity of the dewatering drum, actual voltage used, etc.).

Fig. 4 is a schematic flowchart showing an operation control method of a laundry treating apparatus according to another embodiment of the present invention.

As shown in fig. 4, the operation control method of the laundry treating apparatus according to an embodiment of the present invention includes:

s402, the clothes treatment device enters a dehydration mode, and the running rotating speed of a motor reaches a first preset rotating speed;

s404, acquiring the maximum running rotating speed and the minimum running rotating speed of the motor in real time in one rotation period of the motor;

s406, calculating a difference value between the maximum operation rotation speed and the minimum operation rotation speed to be used as a single period rotation speed fluctuation value;

s408, filtering a single period rotation speed fluctuation value of a plurality of rotation periods in the same dehydration period to obtain a rotation speed fluctuation value;

s410, judging whether the rotation speed fluctuation value is smaller than a first preset threshold value, if not, jumping to S412, and if yes, jumping to S414;

s412, controlling the motor to stop rotating and controlling the clothes treatment device to perform eccentric adjustment operation;

s414, judging whether the rotation speed fluctuation value is smaller than a third preset threshold value, if not, jumping to S416, and if yes, jumping to S418;

s416, controlling the motor to slow down to the target rotating speed of the previous dehydration period;

s418, judging whether the rotation speed fluctuation value is smaller than a second preset threshold value, if not, jumping to S420, and if yes, jumping to S422;

S420, controlling the motor to keep the current running rotating speed;

s422, controlling the motor to accelerate to the target rotating speed of the next dehydration period after the current dehydration period is finished.

In this embodiment, after the rotational speed fluctuation value is smaller than the first preset threshold, it is further determined whether the rotational speed fluctuation value is smaller than the third preset threshold, and when the rotational speed fluctuation value is smaller than the first preset threshold and greater than or equal to the third preset threshold, it indicates that the eccentricity of the clothes dehydration in the clothes processing device is serious, the influence on the motor is great, the generated noise is also great, but the operation of the motor is not required to be stopped, and at this time, the motor can be controlled to slow down, and noise generated by the operation of the motor and vibration of the clothes processing device are reduced. The specific method for reducing the rotation speed can be as follows: the motor is controlled to slow down to the target rotation speed of the last dehydration period, or the motor is controlled to gradually slow down according to a certain step frequency, and the like. Wherein, the third preset threshold value is larger than the second preset threshold value, and the first preset rotating speed, the second preset rotating speed and the third preset rotating speed are determined according to actual conditions (motor model, dewatering cylinder capacity, actual use voltage and the like).

Fig. 5 illustrates a schematic flowchart of an operation control method of a laundry treating apparatus according to another embodiment of the present invention.

As shown in fig. 5, the operation control method of the laundry treating apparatus according to an embodiment of the present invention includes:

s502, the clothes treatment device enters a dehydration mode, and the running rotating speed of a motor reaches a first preset rotating speed;

s504, acquiring the maximum running rotating speed and the minimum running rotating speed of the motor in real time in one rotation period of the motor;

s506, calculating a difference value between the maximum operation rotation speed and the minimum operation rotation speed to serve as a single period rotation speed fluctuation value;

s508, filtering a single period rotation speed fluctuation value of a plurality of rotation periods in the same dehydration period to obtain a rotation speed fluctuation value;

s510, judging whether the rotation speed fluctuation value is smaller than a first preset threshold value, if not, jumping to S512, and if yes, jumping to S514;

s512, controlling the motor to stop rotating and controlling the clothes treatment device to perform eccentric adjustment operation;

s514, judging whether the rotation speed fluctuation value is smaller than a third preset threshold value, if not, jumping to S516, and if yes, jumping to S518;

s516, controlling the motor to slow down to the target rotating speed of the previous dehydration period;

s518, judging whether the rotation speed fluctuation value is smaller than a second preset threshold value, if not, jumping to S520, and if yes, jumping to S522;

s520, controlling the motor to keep the current running rotating speed;

S522, judging whether the current dehydration cycle is a target dehydration cycle, if so, jumping to S524, and if not, jumping to S526;

s524, controlling the motor to keep the current running rotating speed;

s526, controlling the motor to accelerate to the target rotating speed of the next dehydration period after the current dehydration period is finished.

In this embodiment, after the rotational speed of the motor reaches the preset rotational speed of the user, the motor is controlled to maintain the current rotational speed until the dehydration operation is completed.

Fig. 6 is a schematic flowchart showing an operation control method of a laundry treating apparatus according to another embodiment of the present invention.

As shown in fig. 6, the operation control method of the laundry treating apparatus according to an embodiment of the present invention includes:

s602, the clothes treating apparatus enters a dehydration mode, and the running rotation speed of the motor reaches a first preset rotation speed;

s604, starting the motor at a first preset rotating speed, calculating a rotating speed difference value of the motor once every a first preset time length, and reducing the rotating speed difference value to a difference value threshold value;

s606, acquiring a rotating speed fluctuation value of the motor in real time;

and S608, controlling the operation of the clothes treating apparatus according to the rotation speed fluctuation value.

In this embodiment, the motor starts to operate at a first preset rotational speed, a rotational speed difference value of the motor is calculated every a first preset time period, and after the rotational speed difference value is reduced to a difference threshold value, a step of acquiring a rotational speed fluctuation value of the motor in real time is performed. After the rotation speed difference value is reduced to the difference value threshold value, the motor can be judged to be stable in operation, and the operation time after the motor is stable is recorded, the step of acquiring the rotation speed fluctuation value of the motor in real time is executed, so that the phenomenon that the rotation speed fluctuation value of the motor is inaccurate due to the fact that the influence on the operation speed of the motor is large due to the fact that the rotation speed fluctuation value of the motor is large in the earlier stage is prevented. The first preset duration and the difference threshold are determined according to working experience or actual conditions.

Fig. 7 is a schematic flowchart illustrating an operation control method of a laundry treating apparatus according to another embodiment of the present invention.

As shown in fig. 7, the operation control method of the laundry treating apparatus according to an embodiment of the present invention includes:

s702, detecting torque fluctuation or rotation speed fluctuation of a motor in real time in a low-speed dehydration stage to obtain the eccentric degree of a cylinder;

s704, controlling the motor to accelerate to a first preset rotating speed based on the condition that the eccentric degree meets the high-speed dehydration condition;

s706, after the clothes treatment device enters a dehydration mode and the running rotating speed of the motor reaches a first preset rotating speed, acquiring a rotating speed fluctuation value of the motor in real time;

s708, controlling the operation of the clothes treating apparatus according to the rotation speed fluctuation value.

In this embodiment, before the laundry treatment apparatus does not enter the high-speed dehydration stage, the eccentricity detection is performed first in the low-speed stage, and after it is determined that the operation of dehydration is allowed (the eccentricity satisfies the condition), the laundry treatment apparatus has the condition of entering the high-speed dehydration stage, and after the motor is accelerated to the first preset rotational speed, the laundry treatment apparatus enters the high-speed dehydration mode, the rotational speed fluctuation value of the motor is obtained in real time, so as to obtain the eccentricity degree of the drum in the high-speed dehydration stage. The specific method for eccentric detection in the low-speed stage comprises the following steps: torque fluctuation or rotation speed fluctuation of the motor is detected in real time to obtain the eccentricity degree of the laundry treating apparatus. The eccentric detection is carried out once before the control motor accelerates to the first preset rotating speed, so that the aim is to prevent the eccentric degree of the cylinder from entering into a high-speed dehydration stage under the condition of too serious, and the vibration of the clothes treatment device is too large, so that the service life of the motor and the use feeling of a user are influenced.

Fig. 8 illustrates a graph showing an operation rotational speed of a motor of a laundry treating apparatus according to an embodiment of the present invention with time.

In this embodiment, as shown in fig. 8, t is a time when the laundry treating apparatus starts to dehydrate, t is in s (seconds), w is a rotational speed of the laundry treating apparatus to dehydrate, and w is in rpm (revolutions per minute). After the clothes treating apparatus enters the dewatering stage, the clothes treating apparatus is 0 to t _a Detecting low-speed eccentricity in a time period, judging whether dehydration is allowed, if so, accelerating to a first rotating speed gear, and t _b ～t _c After waiting for the stable rotation speed in the time period, at t _c ～t _d And in the time period, detecting the fluctuation value of the motor rotation speed in real time, further calculating the fluctuation value of the output rotation speed, and determining the next rotation speed instruction (whether to change the rotation speed to the target rotation speed) according to the calculation result of the fluctuation value of the rotation speed. In any of the high-speed dehydration stages, the rotational speed fluctuation value is calculated in the same manner as in the first rotational speed range.

Fig. 9 illustrates a motor speed fluctuation graph of a laundry treating apparatus according to an embodiment of the present invention.

As shown in fig. 9, in this embodiment, wmax1 is the maximum rotation speed in one rotation period, wmin1 is the minimum rotation speed in the same rotation period, Δw1 is the rotation speed fluctuation in one rotation period, Δw1=wmax 1-Wmin1.

An embodiment of the second aspect of the present invention provides an operation control system of a laundry treating apparatus.

Fig. 10 illustrates a schematic block diagram of an operation control system of a laundry treating apparatus according to an embodiment of the present invention.

As shown in fig. 10, an operation control system 1000 of a laundry treating apparatus according to an embodiment of the present invention includes: a detection module 1002 and a control module 1004.

The detection module 1002 is configured to obtain, in real time, a rotational speed fluctuation value of the motor after the laundry processing apparatus enters a dehydration mode and an operation rotational speed of the motor is higher than a first preset rotational speed; the control module 1004 is used for controlling the operation of the laundry treating device according to the rotational speed fluctuation value.

After the laundry treatment apparatus enters the dehydration mode and the operation rotation speed of the motor reaches the first preset rotation speed, the operation control system 1000 of the laundry treatment apparatus provided by the invention means that the motor enters the high-speed dehydration stage, and the first preset rotation speed can be set in the factory or in the use process of the laundry treatment apparatus according to the actual needs of different washing modes. After the motor enters the high-speed dehydration stage, the rotation speed fluctuation value of the motor is obtained in real time through the detection module 1002, and the operation of the clothes treatment device is controlled through the control module 1004 according to the rotation speed fluctuation value, such as the operation rotation speed of the motor, shaking and scattering of the clothes in the drum, adjustment of the water injection quantity and the like. Because the eccentricity of the drum body can influence the rotation speed fluctuation value of the motor in the high-speed dehydration stage, the rotation speed fluctuation value of the motor represents the eccentricity of the current drum body to a certain extent, and the control module 1004 controls the operation of the clothes treatment device according to the rotation speed fluctuation value obtained in real time, so that the eccentricity of the drum body in the high-speed dehydration stage can be effectively relieved. The control method can be carried out in any dehydration period after the motor enters the high-speed dehydration stage, dynamically adjusts the dehydration gear according to the actual eccentric condition of the cylinder, accurately sets the optimal dehydration rotating speed gear, realizes excellent dehydration effect, effectively reduces larger noise and vibration generated by the clothes treatment device due to serious cylinder eccentricity, and prolongs the service life of the motor. Preferably, the rotation speed can be adjusted by adjusting different rotation speed gears of the motor, the rotation speed of the motor can be adjusted by a certain step frequency, or the rotation speed of the motor can be adjusted by other methods. By acquiring the rotating speed fluctuation value of the motor, the accuracy of detecting the state of the motor is improved, the accuracy of detecting the eccentric condition of the cylinder in the high-speed dehydration stage is further improved, and the effect of preventing the cylinder from being eccentric in the high-speed dehydration stage is achieved. Further, the state of the current dehydrated clothes (the state of water loss on the clothes) can be accurately measured through the rotating speed fluctuation value of the motor, and the clothes treatment device can judge the state of the current dehydrated clothes according to the rotating speed fluctuation value of the motor, so that the rotating speed is intelligently regulated, and the clothes dehydration efficiency is improved.

Preferably, the detection module 1002 is further configured to: in a rotation period of the motor, acquiring the maximum running rotation speed and the minimum running rotation speed of the motor in real time; calculating a difference value between the maximum running rotating speed and the minimum running rotating speed to serve as a single period rotating speed fluctuation value; and filtering the single-period rotation speed fluctuation value of a plurality of rotation periods in the same dehydration period to obtain the rotation speed fluctuation value.

In this embodiment, the method for calculating the rotation speed fluctuation by the detection module 1002 specifically includes: in one rotation period of the motor, the detection module 1002 obtains the maximum and minimum running speeds of the motor in real time, calculates the difference between the maximum and minimum running speeds, and filters the difference between the rotation periods in the same dehydration period to obtain a speed filter value. Wherein, one rotation period is a period of one rotation (360 °) of the motor shaft, the detection module 1002 filters (averages) the single period rotation speed fluctuation values of the plurality of rotation periods to obtain the rotation speed fluctuation value, so that the influence of other external factors on the rotation speed fluctuation value can be eliminated.

Δw＝(Δw1+Δw2+…Δwn)/(t ₁ +t ₂ …t _n ) (1)

wherein Deltaw is the fluctuation value of the rotating speed, t _n For the running time of the nth rotation period after the motor is stable in running (after reaching the first preset rotation speed, calculating the rotation speed difference value of the motor every other first preset time length, and considering the motor to be stable in running after the rotation speed difference value is reduced to the difference value threshold value), Δw1 is the rotation speed fluctuation in the 1 st rotation period after the motor is stable in running The value deltawn is the rotation speed fluctuation value of the nth rotation period after the motor is stable in operation. The subsequent rotational speed fluctuation value is carried out in a push stack mode, namely, in the formula (1), the first rotational speed fluctuation value Deltaw 1 is discarded, and the n+1th rotational speed fluctuation value Deltawn+1 is increased.

Preferably, the control module 1004 is further configured to: controlling the motor to stop rotating based on the condition that the rotating speed fluctuation value is greater than or equal to a first preset threshold value, and controlling the clothes treatment device to perform eccentric adjustment operation; controlling the motor to keep the current running rotating speed based on the condition that the rotating speed fluctuation value is smaller than a first preset threshold value and larger than a second preset threshold value; and controlling the motor to accelerate to the target rotating speed of the next dehydration period after the current dehydration period is ended based on the condition that the rotating speed fluctuation value is smaller than a second preset threshold value.

In this embodiment, when the rotational speed fluctuation value is equal to or greater than the first preset threshold value, it indicates that the eccentricity of the drum is very serious, so the control module 1004 controls the motor to stop rotating and controls the laundry treating apparatus to perform the eccentricity adjustment operation, and after the eccentricity adjustment operation, the dehydration process is performed again, where a specific eccentricity adjustment process may be: the control module 1004 controls the laundry treatment apparatus to adjust laundry (e.g., controls the laundry treatment apparatus to perform a shaking operation), and/or adjust an amount of water injected, etc. When the rotational speed fluctuation value is smaller than a first preset threshold value, whether the rotational speed fluctuation value is smaller than a second preset threshold value is further judged, and when the rotational speed fluctuation value is smaller than the first preset threshold value and larger than or equal to the second preset threshold value, the eccentric condition of clothes dehydration in the clothes treatment device is not serious, or the clothes are dehydrated more, the weight is reduced, the influence on the motor is smaller, the generated noise is smaller, and at the moment, the control module 1004 can control the motor to keep the current running rotational speed. When the fluctuation value of the rotation speed is smaller than a second preset threshold value, the condition of eccentricity in the clothes treatment device is indicated to be weaker, and the rotation speed of dehydration is smaller at the moment, the rotation speed can be continuously increased to improve the dehydration effect, and the specific method for increasing the rotation speed can be as follows: the control module 1004 controls the motor to accelerate to the target rotation speed of the next dehydration cycle after the operation of the current dehydration cycle is finished, or controls the motor to gradually increase the rotation speed according to a certain step frequency, and the like. The first preset threshold and the second preset threshold may be determined according to actual conditions (motor model, capacity of the dewatering drum, actual voltage used, etc.).

Preferably, the control module 1004 is further configured to: controlling the motor to slow down to the target rotation speed of the previous dehydration period based on the condition that the rotation speed fluctuation value is smaller than a first preset threshold value and larger than a third preset threshold value; wherein the third preset threshold is greater than the second preset threshold.

In this embodiment, after the rotational speed fluctuation value is smaller than the first preset threshold, whether the rotational speed fluctuation value is smaller than the third preset threshold is further determined, when the rotational speed fluctuation value is smaller than the first preset threshold and greater than or equal to the third preset threshold, it indicates that the eccentricity condition of the clothes dehydration in the clothes treatment device is serious, the influence on the motor is great, the generated noise is also great, but the operation of the motor does not need to be stopped, at this time, the control module 1004 can control the motor to slow down, and noise generated by the operation of the motor and vibration of the clothes treatment device are reduced. The specific method for reducing the rotation speed can be as follows: the control module 1004 controls the motor to slow down to a target rotational speed of a previous dehydration cycle, or controls the motor to gradually slow down in a certain step frequency, and so on. Wherein, the third preset threshold value is larger than the second preset threshold value, and the first preset rotating speed, the second preset rotating speed and the third preset rotating speed are determined according to actual conditions (motor model, dewatering cylinder capacity, actual use voltage and the like).

Preferably, the control module 1004 is further configured to: and controlling the motor to maintain the current running rotating speed based on the condition that the current dehydration period is the target dehydration period.

In this embodiment, after the rotational speed of the motor reaches the preset rotational speed of the user, the control module 1004 controls the motor to maintain the current rotational speed until the dehydrating operation is completed.

Preferably, the detection module 1002 is further configured to calculate a rotational speed difference of the motor once every a first preset duration when the motor starts to operate at a first preset rotational speed; the rotation speed detection module 1002 is further configured to perform a step of acquiring a rotation speed fluctuation value of the motor in real time based on the rotation speed difference value being reduced to the difference threshold value.

In this embodiment, the motor starts to operate at a first preset rotational speed, the detection module 1002 calculates a rotational speed difference value of the motor once every a first preset time period, and performs a step of acquiring a rotational speed fluctuation value of the motor in real time after the rotational speed difference value is reduced to a difference threshold value. After the rotation speed difference value is reduced to the difference value threshold value, the motor can be judged to be stable in operation, and the operation time after the motor is stable is recorded, the step of acquiring the rotation speed fluctuation value of the motor in real time is executed, so that the phenomenon that the rotation speed fluctuation value of the motor is inaccurate due to the fact that the influence on the operation speed of the motor is large due to the fact that the rotation speed fluctuation value of the motor is large in the earlier stage is prevented. The first preset duration and the difference threshold are determined according to working experience or actual conditions.

Preferably, the detection module 1002 is further configured to detect torque fluctuation or rotation speed fluctuation of the motor in real time, so as to obtain the eccentricity degree of the laundry treating device; the control module 1004 is further configured to control the motor to accelerate to a first preset rotation speed based on the eccentric degree satisfying the high-speed dehydration condition.

In this embodiment, before the laundry treatment apparatus does not enter the high-speed dehydration stage, the eccentricity detection is performed first in the low-speed stage, and after it is determined that the operation of dehydration is allowed (the eccentricity satisfies the condition), the laundry treatment apparatus has the condition of entering the high-speed dehydration stage, and after the motor is accelerated to the first preset rotational speed, the laundry treatment apparatus enters the high-speed dehydration mode, the rotational speed fluctuation value of the motor is obtained in real time, so as to obtain the eccentricity degree of the drum in the high-speed dehydration stage. The specific method for eccentric detection in the low-speed stage comprises the following steps: the detection module 1002 detects torque fluctuation or rotation speed fluctuation of the motor in real time to obtain the eccentricity degree of the laundry treating apparatus. The eccentric detection is carried out once before the control motor accelerates to the first preset rotating speed, so that the aim is to prevent the eccentric degree of the cylinder from entering into a high-speed dehydration stage under the condition of too serious, and the vibration of the clothes treatment device is too large, so that the service life of the motor and the use feeling of a user are influenced.

Fig. 11 illustrates a schematic block diagram of a laundry treating apparatus 1100 according to an embodiment of the present invention.

As shown in fig. 11, a laundry treating apparatus 1100 according to an embodiment of the present invention includes: an operation control system 1102 of the laundry treating apparatus.

The laundry treatment apparatus 1100 according to the present invention includes an operation control system 1102 of the laundry treatment apparatus, wherein the operation control system 1102 of the laundry treatment apparatus has all the technical effects of the operation control system of the laundry treatment apparatus, and therefore, the laundry treatment apparatus 1100 also has all the technical effects of the operation control system of the laundry treatment apparatus, which are not described herein.

An embodiment of the fourth aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, which when executed by a processor implements the steps of a method according to any of the above-mentioned claims.

FIG. 12 illustrates an off-center sensing control block diagram according to one embodiment of the invention.

As shown in fig. 12, the laundry treating apparatus may include: the device comprises a motor, a rotating speed detection module, an eccentric detection module, a speed instruction control module and a motor driving control module. When the clothes treating device normally operates, a speed command control module outputs control commands such as target rotating speed, acceleration and the like; the motor drive control module carries out variable frequency modulation on output voltage and current according to a control instruction, so as to ensure that the motor operates according to requirements; the rotating speed detection module processes the motor rotating speed fluctuation value information calculated in real time, and then sends the processed motor rotating speed fluctuation value information calculated in real time to the eccentric detection module, and the eccentric detection module obtains an eccentric control instruction according to an eccentric control algorithm and feeds the eccentric control instruction back to the speed instruction control module, so that closed-loop control of the clothes processing device is completed.

FIG. 13 shows a full speed range eccentricity detection flow chart according to one embodiment of the invention.

As shown in fig. 13, S1302 first performs low-speed eccentricity detection, judging whether dehydration is allowed; s1304, if dehydration is allowed, entering a high-speed section for eccentric detection, otherwise stopping operation, and trying again after shaking; s1306, if the eccentric detection result is smaller than a first threshold value, the operation continues to rise; if the rotation speed is between the first threshold value and the second threshold value, stabilizing at the current rotation speed; if the speed is between the second threshold value and the third threshold value, the speed is reduced to the last rotating speed gear; if the threshold value is higher than the third threshold value, immediately stopping operation, and trying again after shaking; if the preset rotating speed of the user is reached, the current rotating speed is only allowed to be stabilized even if the speed increasing condition is met, otherwise, the control judgment is carried out according to the eccentric sensing result.

As shown in fig. 14, first, low-speed eccentricity detection is performed to determine whether dehydration is permitted; if dehydration is allowed, entering a high-speed section for eccentric detection, otherwise stopping operation, shaking clothes in the cylinder body, and trying again; if the eccentric detection result (marked by the rotation speed fluctuation value delta W) is smaller than the first threshold value, immediately stopping running, shaking the clothes in the cylinder body, and trying again; if the speed is between the first threshold value and the second threshold value, the speed is reduced to the last rotating speed gear; if the rotation speed is between the second threshold value and the third threshold value, stabilizing at the current rotation speed; if the speed is higher than the third threshold value, the operation continues to be increased; if the preset rotating speed of the user is reached, only the current rotating speed is allowed to be stabilized, otherwise, control judgment is carried out according to the eccentric sensing result.

In the description of the present invention, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method of controlling operation of a laundry treatment apparatus including a tub and a motor driving the tub to rotate, comprising:

the clothes treatment device enters a dehydration mode, and the running rotating speed of the motor reaches a first preset rotating speed, and then the rotating speed fluctuation value of the motor is obtained in real time;

Controlling the operation of the clothes treatment device according to the rotation speed fluctuation value;

after the step of the laundry treating apparatus entering the dehydrating mode and the operating rotation speed of the motor reaching the first preset rotation speed, comprising:

the motor starts to operate at the first preset rotating speed, the rotating speed difference value of the motor is calculated once every a first preset time length, and the step of acquiring the rotating speed fluctuation value of the motor in real time is executed after the rotating speed difference value is reduced to a difference value threshold value;

the step of obtaining the rotational speed fluctuation value of the motor in real time specifically comprises the following steps:

in a rotation period of the motor, acquiring the maximum running rotating speed and the minimum running rotating speed of the motor in real time;

calculating a difference value between the maximum running rotating speed and the minimum running rotating speed to serve as a single-period rotating speed fluctuation value;

filtering a single period rotation speed fluctuation value of a plurality of rotation periods in the same dehydration period to obtain the rotation speed fluctuation value;

the one rotation period is a period when the motor shaft rotates for one circle;

the specific step of controlling the operation of the clothes treatment device according to the rotational speed fluctuation value comprises the following steps:

and controlling the motor to stop rotating based on the condition that the rotating speed fluctuation value is greater than or equal to a first preset threshold value, and controlling the clothes treatment device to perform eccentric adjustment operation.

2. The operation control method of a laundry treatment apparatus according to claim 1, wherein the specific step of controlling the operation of the laundry treatment apparatus according to the rotational speed fluctuation value further comprises:

controlling the motor to keep the current running rotating speed based on the condition that the rotating speed fluctuation value is smaller than the first preset threshold value and larger than or equal to the second preset threshold value;

and controlling the motor to accelerate to the target rotating speed of the next dehydration period after the current dehydration period is ended based on the condition that the rotating speed fluctuation value is smaller than the second preset threshold value.

3. The operation control method of the laundry treating apparatus according to claim 2, wherein the specific step of controlling the operation of the laundry treating apparatus according to the rotational speed fluctuation value further comprises:

controlling the motor to slow down to the target rotation speed of the previous dehydration period based on the condition that the rotation speed fluctuation value is smaller than the first preset threshold value and larger than a third preset threshold value;

wherein the third preset threshold is greater than the second preset threshold.

4. The operation control method of the laundry treating apparatus according to claim 3, wherein the operation control method further comprises:

And controlling the motor to keep the current running rotating speed under the condition that the current dehydration period is the target dehydration period.

5. The operation control method of a laundry treatment apparatus according to any one of claims 1 to 4, further comprising, before the laundry treatment apparatus enters a dehydration mode and an operation rotation speed of the motor does not reach the first preset rotation speed:

detecting torque fluctuation or rotation speed fluctuation of the motor in real time to obtain the eccentricity of the clothes treating apparatus;

and controlling the motor to accelerate to the first preset rotating speed based on the condition that the eccentric degree meets a high-speed dehydration condition.

6. An operation control system of a laundry treatment apparatus, the laundry treatment apparatus including a tub and a motor, the motor driving the tub to rotate, comprising:

the detection module is used for acquiring the rotating speed fluctuation value of the motor in real time after the clothes treatment device enters a dehydration mode and the operating rotating speed of the motor is higher than a first preset rotating speed;

the control module is used for controlling the operation of the clothes treatment device according to the rotating speed fluctuation value;

the detection module is further used for calculating a rotating speed difference value of the motor once every a first preset duration when the motor starts to operate at the first preset rotating speed;

The rotating speed detection module is further used for executing the step of acquiring the rotating speed fluctuation value of the motor in real time after the rotating speed difference value is reduced to a difference value threshold value;

the detection module is also used for:

the control module is further configured to:

7. The operation control system of the laundry treatment apparatus according to claim 6, wherein the control module is further configured to:

controlling the motor to keep the current running rotating speed based on the condition that the rotating speed fluctuation value is smaller than the first preset threshold value and larger than the second preset threshold value;

8. The operation control system of the laundry treatment apparatus according to claim 7, wherein the control module is further configured to:

controlling the motor to slow down to the target rotation speed of the previous dehydration period based on the rotation speed fluctuation value being smaller than the first preset threshold value and larger than a third preset threshold value;

wherein the third preset threshold is greater than the second preset threshold.

9. The operation control system of the laundry treatment apparatus according to claim 7, wherein the control module is further configured to:

and controlling the motor to keep the current running rotating speed based on the condition that the next dehydration period is the target dehydration period.

10. The operation control system of the laundry treatment apparatus according to any one of claims 6 to 9, further comprising:

the detection module is also used for detecting torque fluctuation or rotation speed fluctuation of the motor in real time so as to obtain the eccentricity of the clothes treatment device;

the control module is further used for controlling the motor to accelerate to the first preset rotating speed under the condition that the eccentric degree meets the high-speed dehydration condition.

11. A laundry treating apparatus, comprising: the operation control system of the laundry treating apparatus according to any one of claims 6 to 10.

12. A computer-readable storage medium having stored thereon a computer program, wherein the computer program, when executed by a processor, implements the steps of the operation control method of the laundry treatment apparatus according to any one of claims 1 to 5.