CN111769687A - Active damping device and control method - Google Patents

Abstract

The embodiment of the invention discloses an active damping device and a control method, wherein the device comprises: the handle comprises a handle shell, a support, a circuit board, a first motor and a second motor, wherein the circuit board is electrically connected with the first motor and the second motor respectively, the first motor is fixed on the support, the support is fixed on the inner wall of the handle shell, the first motor is connected with a vibration part and used for providing power for the vibration part, the second motor is fixed on the support or the first motor, the support is fixed on the inner wall of the handle shell, and the vibration of the second motor is the reverse vibration with the same frequency as the first motor. The second motor is arranged, and the vibration of the second motor is the reverse vibration with the same frequency as the first motor, so that the real-time accurate and stable active damping effect is achieved, the device is simple in structure, and the comfort level of a user using the personal care product is further improved.

Description

Active damping device and control method

technical field

The present invention relates to the technical field of motor damping, and in particular, to an active damping device and a control method.

Background technique

With the development of science and technology, more and more small electric personal care products are favored by people, making people's life more comfortable and convenient. At present, the commonly used small electric personal care products include electric toothbrushes, electric shavers and hand-held hair dryers, etc. These small electric personal care products all require motors to provide power, and the vibration of the motor often causes people to use the hand-held part. Therefore, this greatly reduces the comfort of people using small personal care products. In order to improve the comfort of using personal care products, people began to use various methods to shock the motor. For electric toothbrushes, the general shock absorption method is to place a shock pad or other shock absorber between the motor and the inner wall of the electric toothbrush handle. The shock-absorbing material is used to separate the motor from the handle, so as to achieve the effect of shock absorption. However, this solution has a relatively stable shock-absorbing effect when the motor is kept at a certain parameter of vibration, but when the vibration of the motor is When the parameters change, the damping effect of this method cannot maintain a stable level.

SUMMARY OF THE INVENTION

Based on this, it is necessary to propose an active damping device and a control method for the above problems. The purpose of the present invention is to use the active damping technology to offset the vibration force from the main motor, so as to achieve the purpose of damping the personal care products.

In a first aspect, the present application provides an active damping device, the device comprising: a handle housing, a bracket, a circuit board, a first motor and a second motor;

the circuit board is electrically connected to the first motor and the second motor, respectively;

the first motor is fixed on the bracket, the bracket is fixed on the inner wall of the handle shell, and the first motor is connected with the vibration component for providing power for the vibration component;

The second motor is fixed on the bracket or the first motor, the bracket is fixed on the inner wall of the handle shell, and the vibration of the second motor is the same frequency as the first motor. to the vibration.

In one embodiment, the circuit board includes a plurality of sub-circuit boards connected by a flexible circuit or the circuit board includes one sub-circuit board, the active damping device further includes a controller and a sensor, the control The controller and the sensor are respectively located on the connected sub-circuit boards or the controller and the sensor are located on the one sub-circuit board, the controller is respectively connected with the sensor, the first motor electrically connected to the second motor;

The sensor includes a shock sensor, and the shock sensor is an acceleration sensor, a triaxial acceleration sensor, an angular velocity sensor, a pressure-sensitive sensor or a microphone audio sensor.

In one embodiment, the bracket supports the circuit board, and the circuit board is closely attached to the bracket or the bracket is used to make the circuit board tightly attached to the inner wall of the handle housing.

In one of the embodiments, the device further includes a battery located inside the handle housing for providing electrical power to the device.

In one of the embodiments, the motor shaft of the first motor and the vibration component are mechanically connected through rigidity, and the stator of the first motor and the bracket are connected through rigidity or through the combination of rigidity and soft glue. connect.

In one of the embodiments, the stator of the second motor and the bracket are connected through rigidity or through rigidity and soft glue.

In one of the embodiments, the stator of the second motor may also be connected with the stator of the first motor by rigidity or by soft glue.

In a second aspect, the present application provides a control method, the method comprising:

The controller controls the first motor to start, and acquires vibration data of the bracket or the handle shell brought by the sensor to collect the first motor;

The controller controls the second motor to perform synchronous and reverse vibration according to the vibration data.

Optionally, the controller controls the second motor to perform synchronous and reverse vibration according to the vibration data, including:

When the vibration data is less than the target value, the controller controls the second motor to maintain the vibration parameter unchanged;

When the vibration data is greater than or equal to the target value, the controller adjusts the vibration parameter of the second motor until the vibration data collected by the sensor is smaller than the target value.

Optionally, the vibration parameter includes an amplitude control parameter, a vibration waveform curve control parameter, a vibration phase difference control parameter, or a vibration frequency control parameter of the opposite vibration to the first motor.

Adopting the embodiment of the present invention has the following beneficial effects:

An active damping device and control method using the present invention include: a handle shell, a bracket, a circuit board, a first motor and a second motor, the circuit board is electrically connected to the first motor and the second motor respectively, and the first motor is fixed On the bracket, the bracket is fixed on the inner wall of the handle shell, the first motor is connected with the vibration part to provide power for the vibration part, the second motor is fixed on the bracket or the first motor, and the bracket is fixed on the inner wall of the handle shell , the vibration of the second motor is the opposite vibration of the same frequency as the first motor. By arranging the second motor, the second motor can be controlled to perform reverse vibration at the same frequency as the first motor, so as to achieve a real-time accurate and stable active shock absorption effect, and the device has a simple structure, which further improves the user's use of personal care products. of comfort.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

in:

FIG. 1 is a schematic diagram of an active damping device in one embodiment;

FIG. 2 is a schematic diagram of the internal driving of the active damping device in one embodiment;

FIG. 3 is a schematic flowchart of a control method in one embodiment.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

As shown in FIG. 1, it is an active damping device in one embodiment, the device includes: a handle shell 101, a bracket 106, a circuit board 102, a first motor 103 and a second motor 104, the circuit board 102 and the first motor 103 are respectively It is electrically connected to the second motor 104, the first motor 103 is fixed on the bracket 106, the bracket 106 is fixed on the inner wall of the handle housing 101, the first motor 103 is connected with the vibration component, and is used to provide power for the vibration component, and the second motor 104 It is fixed on the bracket 106 or the first motor 103 . The bracket 106 is fixed on the inner wall of the handle housing 101 , and the vibration of the second motor 104 is the opposite vibration of the same frequency as the first motor 103 .

In the embodiment of the present application, the circuit board 102 includes a plurality of sub-circuit boards connected by a flexible circuit, or the circuit board 102 includes a sub-circuit board, and the active damping device further includes a controller and a sensor, and the controller and the sensor are located in the connected The controller and the sensor are located on one sub-circuit board. The controller is electrically connected to the sensor, the first motor 103 and the second motor 104, respectively. The sensor includes a vibration sensor, and the vibration sensor is an acceleration sensor, a three-axis acceleration sensor, and a three-axis acceleration sensor. Any of a sensor, an angular velocity sensor, a pressure-sensitive sensor, or a microphone audio sensor may be used for the sensor that collects data evaluating the vibration of the stand 106 or the handle housing 101 .

In the embodiment of the present application, the bracket 106 supports the circuit board 102 , and the circuit board 102 is in close contact with the bracket 106 or the bracket 106 is used to make the circuit board 102 close to the inner wall of the handle housing 101 .

In the embodiment of the present application, the device further includes a battery 107, and the battery 107 is located inside the handle housing 101 and is used to provide electrical energy for the device.

In the embodiment of the present application, the motor shaft of the first motor 103 and the vibration component are mechanically connected through rigidity, and the stator of the first motor 103 and the bracket 106 are connected through rigidity or through rigidity and soft glue.

In the embodiment of the present application, the stator of the second motor 104 and the bracket 106 are connected through rigidity or through the combination of rigidity and soft glue.

In the embodiment of the present application, the stator of the second motor 104 may also be connected with the stator of the first motor 103 by rigidity or by soft glue.

In the embodiment of the present application, the second motor 104 is a linear motor.

In order to illustrate the working mode of the active damping device of the present invention more clearly, please refer to FIG. 2 , which is a schematic diagram of the internal driving of the active damping device of the present invention.

In the embodiment of the present application, the active damping device can be used in various small electric household appliances driven by motors, such as electric toothbrushes, electric shavers and hand-held hair dryers, and the active damping device is arranged in Inside the handle of the personal care product. The circuit board 102 in the active damping device includes a plurality of sub-circuit boards connected by a flexible circuit, or the circuit board 102 includes a sub-circuit board, and the active damping device also includes a controller and a sensor, and the controller and the sensor are respectively located in the connected A plurality of sub-circuit boards or the controller and the sensor are located on one sub-circuit board, the circuit board 102 further includes a memory, the memory is used to store the software or software and data information for controlling the active damping device, the controller can control the sensor, the first In the working state of the first motor 103 and the second motor 104, when the personal care product is started, the first motor 103 starts to vibrate to provide power for the vibration part of the personal care product, because the first motor 103 is fixed to the support 106 of the personal care product. and the bracket 106 is fixed on the inner wall of the handle shell 101, therefore, the vibration of the first motor 103 will drive the vibration of the bracket 106 of the personal care product and the handle shell 101, and the sensor in close contact with the bracket 106 or the handle shell 101 will The vibration data of the bracket 106 or the handle shell 101 of the personal care product is transmitted to the controller, and the controller will control the second motor 104 to perform synchronous reverse vibration according to the received vibration data of the bracket 106 or the handle shell 101, so as to utilize the second vibration data. The vibration of the motor 104 cancels the vibration transmitted from the first motor 103 to the handle housing 101, thereby achieving the effect of active vibration reduction.

Among them, the vibration data of the bracket 106 or the handle shell 101 collected by the above sensors includes the radial vibration acceleration of the handle, the triaxial vibration acceleration of the handle, the vibration frequency of the handle, the vibration waveform of the handle, the tangential vibration angular velocity of the handle, and the triaxial vibration angular velocity of the handle. , pressure change amplitude, pressure change frequency, sound frequency and intensity, etc. at least one or more data.

Further, the sensor includes at least one vibration sensor, and the vibration sensor can be an acceleration sensor, a triaxial acceleration sensor, an angular velocity sensor, a pressure-sensitive sensor or a microphone audio sensor, any of which can be used to collect and evaluate the vibration of the bracket 106 or the handle shell 101. data sensor.

Further, the number of sensors, the first motor 103 and the second motor 104 in the active damping device is not limited here.

In an embodiment of the present application, an active damping device includes: a handle shell, a bracket, a circuit board, a first motor and a second motor, the circuit board is electrically connected to the first motor and the second motor respectively, and the first motor is fixed On the bracket, the bracket is fixed on the inner wall of the handle shell, the first motor is connected with the vibration part to provide power for the vibration part, the second motor is fixed on the bracket or the first motor, and the bracket is fixed on the inner wall of the handle shell , the vibration of the second motor is the opposite vibration of the same frequency as the first motor. By arranging the second motor, the second motor can be controlled to perform reverse vibration at the same frequency as the first motor, so as to achieve a real-time accurate and stable active shock absorption effect, and the device has a simple structure, which further improves the user's use of personal care products. of comfort.

FIG. 3 is a schematic flowchart of a control method in an embodiment. The control method is used in the active damping device in the embodiment of the present application, and the method includes:

Step 301, the controller controls the first motor to start, and acquires vibration data of the handle shell brought by the sensor to collect the first motor;

Step 302 , the controller controls the second motor to perform synchronous and reverse vibration according to the vibration data.

In the embodiment of the present application, the controller in the circuit board 102 in the active damping device will control the first motor 103 to start up. Since the first motor is fixed on the bracket 106 , the bracket 106 is fixed on the inner wall of the handle housing 101 , so the first motor 103 after starting will drive the bracket 106 and the handle shell 101 to vibrate, the sensor in the circuit board 102 will collect the vibration data of the bracket 106 or the handle shell 101, and the controller obtains the vibration data, and further, the controller according to The obtained vibration data controls the vibration state of the second motor 104. When the vibration data obtained by the controller is less than the target value, the controller will control the second motor 104 to maintain the current vibration parameters unchanged. When the vibration data is greater than or equal to the target value, the controller adjusts the vibration parameters of the second motor 104 until the vibration data collected by the sensor is smaller than the target value.

It should be noted that after step 302 is executed, step 301 will continue to be executed until the active damping device stops working, so that the entire control method is a real-time and continuous control method, thereby enabling the active damping device to achieve real-time precision And the stable active shock absorption effect further ensures the user's high comfort when using personal care products.

In an embodiment of the present application, an active damping device includes: a handle shell, a bracket, a circuit board, a first motor and a second motor, the circuit board is electrically connected to the first motor and the second motor respectively, and the first motor is fixed On the bracket, the bracket is fixed on the inner wall of the handle shell, the first motor is connected with the vibration part to provide power for the vibration part, the second motor is fixed on the bracket or the first motor, and the bracket is fixed on the inner wall of the handle shell , the vibration of the second motor is the opposite vibration of the same frequency as the first motor. By arranging the second motor, the second motor can be controlled to vibrate in the opposite direction with the same frequency as the first motor, and an embodiment of the present application also provides a control method in which the vibration of the second motor is controlled in real time by the controller , so as to achieve a real-time accurate and stable active shock absorption effect, and the device has a simple structure, which further improves the user's comfort in using personal care products.

The technical features of the above embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features It is considered to be the range described in this specification.

The above-mentioned embodiments only represent several embodiments of the present application, and the descriptions thereof are relatively specific and detailed, but should not be construed as a limitation on the scope of the patent of the present application. It should be pointed out that for those skilled in the art, without departing from the concept of the present application, several modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the scope of protection of the patent of the present application shall be subject to the appended claims.

Claims (10)

1. An active damping device, characterized in that the device comprises: the handle comprises a handle shell, a bracket, a circuit board, a first motor and a second motor;

the circuit board is electrically connected with the first motor and the second motor respectively;

the first motor is fixed on the support, the support is fixed on the inner wall of the handle shell, and the first motor is connected with the vibration part and used for providing power for the vibration part;

the second motor is fixed on the support or the first motor, the support is fixed on the inner wall of the handle shell, and the vibration of the second motor is the reverse vibration with the same frequency as that of the first motor.

2. The active damping device of claim 1, wherein the circuit board comprises a plurality of sub-circuit boards connected by a flexible circuit or the circuit board comprises one sub-circuit board, the active damping device further comprising a controller and a sensor, the controller and the sensor being respectively located on the plurality of connected sub-circuit boards or the controller and the sensor being located on the one sub-circuit board, the controller being electrically connected to the sensor, the first motor, and the second motor, respectively;

the sensor comprises a vibration sensor which is an acceleration sensor, a three-axis acceleration sensor, an angular velocity sensor, a pressure-sensitive sensor or a microphone audio sensor.

3. The active vibration damping device of claim 1, wherein the bracket supports the circuit board, and the circuit board is tightly attached to the bracket or the bracket is used to make the circuit board tightly attached to the inner wall of the handle housing.

4. The active vibration damping device of claim 1, further comprising a battery located within the handle housing for providing electrical power to the device.

5. The active damping device according to claim 1, wherein the motor shaft of the first motor is mechanically connected to the vibration member by a rigid connection, and the stator of the first motor is connected to the bracket by a rigid connection or by a rigid and soft rubber fit.

6. The active damping device according to claim 1, wherein the stator of the second motor is rigidly connected to the bracket or rigidly connected to the bracket by a soft gel fit.

7. The active damping device according to claim 1, wherein the stator of the second motor is further rigidly connected to the stator of the first motor or flexibly connected thereto.

8. A control method applied to the active damping device according to any one of claims 2 to 7, the method comprising:

the controller controls the first motor to start, and obtains vibration data of the bracket or the handle shell, which are brought by the first motor and collected by the sensor;

and the controller controls the second motor to synchronously and reversely vibrate according to the vibration data.

9. The method of claim 8, wherein the controller controls the second motor to synchronously reverse the vibration according to the vibration data, comprising:

when the vibration data is smaller than a target value, the controller controls the second motor to maintain the vibration parameter unchanged;

when the vibration data is larger than or equal to the target value, the controller adjusts the vibration parameters of the second motor until the vibration data collected by the sensor is smaller than the target value.

10. The method of claim 9, wherein the vibration parameter comprises an amplitude control parameter, a vibration waveform curve control parameter, a vibration phase difference control parameter, or a vibration frequency control parameter of the vibration in a direction opposite to the first motor.

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