CN117803763A - Valve opening control device and valve opening adjusting method - Google Patents
Valve opening control device and valve opening adjusting method Download PDFInfo
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- CN117803763A CN117803763A CN202410233985.6A CN202410233985A CN117803763A CN 117803763 A CN117803763 A CN 117803763A CN 202410233985 A CN202410233985 A CN 202410233985A CN 117803763 A CN117803763 A CN 117803763A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 238000001514 detection method Methods 0.000 claims abstract description 43
- 230000008054 signal transmission Effects 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 239000012530 fluid Substances 0.000 claims description 34
- 230000001276 controlling effect Effects 0.000 claims description 27
- 238000004458 analytical method Methods 0.000 claims description 12
- 230000001105 regulatory effect Effects 0.000 claims description 12
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 238000011217 control strategy Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000002265 prevention Effects 0.000 abstract description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 230000006870 function Effects 0.000 description 98
- 238000005299 abrasion Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004590 computer program Methods 0.000 description 3
- 238000003359 percent control normalization Methods 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Magnetically Actuated Valves (AREA)
- Indication Of The Valve Opening Or Closing Status (AREA)
Abstract
The invention provides a valve opening control device and a valve opening adjusting method, which relate to the technical field of valve opening adjustment and comprise a double-body electromagnetic valve, an opening detection mechanism, an electromagnetic valve control mechanism, a signal transmission mechanism and an opening control mechanism; the double-body electromagnetic valve is used for replacing the original valve; the opening detection mechanism is used for detecting the opening of the valve; the opening control mechanism is used for controlling the opening of the valve; the electromagnetic valve control mechanism is used for controlling the double-body electromagnetic valve; the signal transmission mechanism is used for transmitting an opening control signal; the invention is used for solving the problems that the existing valve opening adjusting technology lacks prediction and prevention of accuracy and damages to the valve are too large when large-flow and small-flow conversion is carried out, so that the time required for positioning the valve opening to a target value is too long and the service life of the valve is not long.
Description
Technical Field
The present invention relates to the field of valve opening adjustment technologies, and in particular, to a valve opening control device and a valve opening adjustment method.
Background
The valve opening degree adjusting technology refers to a technology for controlling the opening degree of a valve. A valve is a device for controlling the flow of a fluid, such as a liquid, gas or vapor, and a valve opening refers to the size or degree of a valve opening, and a valve opening adjustment technique aims to control parameters such as the flow rate, pressure or temperature of the fluid by changing the opening of the valve.
The existing valve opening adjusting technology is used for adjusting the valve opening through an intelligent valve, but the existing intelligent valve is usually used for switching between high flow and low flow, otherwise, the valve is influenced by water pressure at two sides to greatly reduce the service life of the valve, so that the intelligent valve is required to be reasonably designed, meanwhile, the existing valve opening adjusting technology is used for adjusting the valve opening to a target value through the intelligent valve, the valve opening is usually adjusted to a second time through the intelligent valve when the valve opening is adjusted, the existing valve opening adjusting technology is usually used for remedying after the accuracy is not enough, the problem that the valve opening is positioned to the target value for overlong time is caused by lack of prediction and prevention of the accuracy, such as in Chinese patent with application publication number of CN111173979A, the valve opening control method is disclosed, the scheme is used for optimizing after data measurement, the prediction and prevention of the accuracy are lacked, meanwhile, the existing valve opening adjusting technology is used for detecting the rotation angle of the valve is poor in applicability of the valve, and the existing valve cannot be suitable for all valves, and the problem that the valve is damaged when the accuracy is not enough to be predicted to the valve opening for positioning for high flow is not enough, and the valve opening is not needed to be positioned to be long enough.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a valve opening adjusting method, which can reduce the influence of water pressure on the service life of a valve through a double-body electromagnetic valve, simultaneously, detect whether the valve opening is accurately adjusted, analyze the target opening and the detected opening, calculate the opening difference value and count a difference coordinate system, fit the difference coordinate system to obtain a linear fitting function, predict the predicted difference value of the next valve opening adjustment through the linear fitting function and adjust in advance, and if the target opening is different from the detected opening, compensate and adjust the detected opening until the target opening is consistent with the detected opening, so as to solve the problems that the existing valve opening adjusting technology still lacks prediction and prevention of accuracy and overlarge damage to the valve when the conversion of large flow and small flow is carried out, and the valve opening is positioned to the target value for overlong time and the service life of the valve is not high.
In order to achieve the above object, in a first aspect, the present invention provides a valve opening control device, including a two-body solenoid valve, an opening detection mechanism, a solenoid valve control mechanism, a signal transmission mechanism, and an opening control mechanism; the double-body electromagnetic valve, the opening detection mechanism, the electromagnetic valve control mechanism and the signal transmission mechanism are respectively connected with the opening control mechanism in a data way;
The double-body electromagnetic valve is used for replacing the original valve, and the water flow in the pipeline is controlled through the section size of the internal fluid channel; the double-body electromagnetic valve is formed by integrating two electromagnetic valves, and the two electromagnetic valves share a water inlet and a water outlet;
the opening detection mechanism is used for detecting the valve opening of the double-body electromagnetic valve;
the opening control mechanism is used for controlling the opening of the valve of the double-body electromagnetic valve and outputting an opening control signal;
the electromagnetic valve control mechanism is used for controlling the double-body electromagnetic valve;
the signal transmission mechanism is used for transmitting an opening control signal.
Further, the double-body electromagnetic valve comprises a water inlet, a water outlet, a fluid channel and a channel valve; the water inlet and the water outlet are used for the inlet and the outlet of fluid in the pipeline; the fluid channel is used for supplying fluid to flow from the water inlet to the water outlet; the channel valve is used for controlling the size of the channel sectional area of the fluid channel.
Further, the opening degree detection mechanism comprises an opening degree detection unit and an opening degree feedback unit; the opening detection unit detects the opening of the valve by adopting a valve opening meter; the opening feedback unit is used for sending an opening feedback signal according to the opening of the valve.
Further, the opening feedback unit is configured with an opening feedback strategy, and the opening feedback strategy includes:
detecting the valve opening of the double-body electromagnetic valve to obtain a detection opening;
acquiring an opening control signal, and marking the valve opening corresponding to the opening control signal as a target opening;
comparing the detected opening with the target opening, and outputting an opening accurate signal if the detected opening is the same as the target opening; outputting an opening inaccuracy signal if the detected opening is different from the target opening;
the opening degree accurate signal and the opening degree inaccurate signal are collectively referred to as an opening degree feedback signal.
Further, the opening control mechanism comprises an input opening control unit, an opening relation analysis unit, a feedback opening control unit, a fitting judgment unit and a compensation detection unit; the input opening control unit is used for receiving the valve opening input by a user, marking the valve opening as an input opening and outputting an opening control signal; the opening relation analysis unit is used for analyzing the relation between the adjustment value of the valve opening and the error; the feedback opening control unit is used for receiving the opening feedback signal and analyzing the opening of the valve; the fitting judgment unit is used for selecting a best fitting function; the compensation detection unit is used for detecting the valve opening after the adjustment error.
Further, the opening relation analysis unit is configured with an opening relation analysis policy, and the opening relation analysis policy includes:
acquiring the valve opening before adjustment of the double-body electromagnetic valve, and marking the valve opening as the opening before adjustment; acquiring a target opening;
calculating the difference between the opening before adjustment and the target opening, marking the difference as an adjustment opening, and recording the adjustment opening for each valve opening adjustment;
acquiring a target opening; receiving an opening feedback signal, and if the opening feedback signal is an inaccurate opening signal, recording the target opening and the detected opening at the moment; subtracting the target opening from the detected opening to obtain an opening difference;
establishing a rectangular coordinate system by taking the recorded sequence as a horizontal axis and the opening difference as a vertical axis, naming the rectangular coordinate system as an adjustment difference coordinate system, establishing an adjustment difference coordinate system for each adjustment opening, and recording the adjustment opening and the corresponding opening difference into the corresponding adjustment difference coordinate system;
and performing linear fitting on the adjustment difference coordinate system to obtain an adjustment fitting function.
Further, the feedback opening control unit is configured with a feedback opening control strategy, and the feedback opening control strategy includes:
acquiring an opening difference value, recording the opening difference value into an error database, numbering the opening difference value according to the recorded sequence, naming the opening difference value as a difference value number, and passing through a symbol S n N is a positive integer;
establishing a difference coordinate system by taking the difference number as an X axis and the opening difference as a Y axis, and recording the opening difference in an error database into the difference coordinate system;
and analyzing the difference coordinate system.
Further, the analyzing the difference coordinate system includes:
performing linear fitting on the difference coordinate system to obtain a linear fitting function;
the next difference is numbered, S n+1 Substituting the predicted difference value into a linear fitting function to obtain a predicted difference value;
and outputting an opening control signal, wherein the regulated value is an opening difference value plus an input opening.
Further, the fitting judgment unit is configured with a fitting judgment strategy, and the fitting judgment strategy comprises:
acquiring an adjustment opening when the valve opening is adjusted at this time, and naming the adjustment opening as a current opening; searching an adjustment fitting function corresponding to the current opening, naming the adjustment fitting function as the current fitting function, calculating the slope of the current fitting function, naming the slope as the function slope, and outputting a difference value stabilizing signal if the function slope is 0; if the slope of the function is not 0, outputting a difference unstable signal;
if the difference value stabilizing signal is output, taking the opening difference value corresponding to the current fitting function as an opening adjustment value; if the output difference is unstable, the opening difference in the current fitting function is numbered by the symbol X i X represents i The corresponding opening difference value is Y i I is a positive integer;
x is to be i Substituting the current fitting function to obtain a predicted value of the current fitting function, and naming the predicted value as a function predicted value; by the formula R i =Y i -f(X i ) Calculate X i Residual at, wherein R i For the ith residual error, f (X i ) A function predicted value;
calculating the sum of squares of all residuals, i.eThe method comprises the steps of carrying out a first treatment on the surface of the Wherein H is the sum of squares of the residuals, and max (i) is the maximum value of i;
calculating the residual square sum of the linear fitting function, which is represented by a symbol P;
comparing H with P, and if H is smaller than or equal to P, marking the current fitting function as the best fitting function; if H is greater than P, marking the linear fitting function as a best fitting function;
if the best fit function is the current fit function, X is then i+1 Substituting the best fitting function, and marking the calculated value as an opening degree adjustment value; if the best fit function is a linear fit function, marking the predicted difference value as an opening degree adjustment value;
the opening adjustment value is used for adding with the input opening to obtain a target opening so as to adjust the error of the detected opening;
when the valve opening is regulated again, marking the input opening as a user expected opening, and adding the user expected opening and an opening regulating value to obtain an actual opening value;
And outputting an opening control signal according to the actual opening value.
Further, the compensation detection unit is configured with a compensation detection strategy, the compensation detection strategy comprising:
the opening difference value is used as an opening control signal to control the opening of the valve, and then the detected opening and the target opening of the double-body electromagnetic valve are detected again;
judging whether the detected opening is the same as the target opening, and if so, outputting an adjustment success signal; if the signals are different, outputting an adjustment failure signal;
if the adjustment failure signal is output, compensating and adjusting the detected opening;
the compensation is adjusted to adjust the valve opening of the first compensation threshold value each time, whether the detected opening is consistent with the target opening or not is detected, and if so, a compensation completion signal is output; if the signals are inconsistent, outputting a compensation unfinished signal;
if the compensation incomplete signal is output, the compensation adjustment is repeated until the compensation complete signal is output.
Further, the electromagnetic valve control mechanism comprises a signal receiving unit and an electromagnetic valve control unit; the signal receiving unit is used for receiving an opening control signal; the electromagnetic valve control unit is used for controlling the double-body electromagnetic valve according to the opening control signal; the signal transmission mechanism is used for transmitting signals, and the transmitted signals are all electric signals.
In a second aspect, the present invention provides a valve opening adjustment method, including the steps of:
step S1, replacing an original valve, and controlling water flow in a pipeline through the size of the section of a fluid channel in the double-body electromagnetic valve;
step S2, detecting the valve opening of the double-body electromagnetic valve;
step S3, controlling the valve opening of the double-body electromagnetic valve and outputting an opening control signal;
s4, controlling the double-body electromagnetic valve;
and S5, transmitting an opening control signal.
The invention has the beneficial effects that: according to the invention, the original valve is replaced by adopting the double-body electromagnetic valve, liquid enters from the side surface, and the impact pressure is applied to the internal fluid channel instead of the valve rod and the piston of the valve, so that the valve is prevented from being excessively worn, and the service life of the valve is prolonged;
the invention judges whether a certain relation exists between the opening difference and the adjustment opening by analyzing the historical adjustment opening of the valve and the corresponding opening difference, and has the advantages that when the valve is adjusted, the larger the adjustment opening is, the larger the opening difference is, the smaller the opposite is, and the analysis of whether the certain relation exists between the two is, so that the control of the valve opening can be ensured to be more accurate, if the slope of the current fitting function is 0, the fact that all the opening differences are equal in the adjustment opening is represented, therefore, the valve can be directly used as a predicted value for adjustment, and the accuracy and the rationality of the valve opening control are improved;
The method and the device have the advantages that the inaccuracy of the valve opening is generally due to the fact that the sensitivity of the internal parts is reduced due to the fact that the valve is used for a long time, the abrasion is generally regular, the fitting function reflects the abrasion rule of the valve, deviation of the valve opening can be predicted and prevented when the valve opening is adjusted for the next time through the fitting function, and the accuracy of valve opening control is improved;
the method and the device have the advantages that the function slope is 0, the residual square sum of the current fitting function and the linear fitting function is calculated when the function slope is not 0, and the function corresponding to the minimum residual square sum is selected as the best fitting function for prediction, so that the function slope is 0, which represents that the opening difference value is basically unchanged, the opening difference value is changed when the function slope is not 0, the residual square sum is calculated to reflect the fitting degree of the function, and the smaller the residual square sum is, the higher the fitting degree is, the more accurate the prediction result is, and the accuracy of valve opening control is further improved;
The invention detects the valve opening after the secondary adjustment, judges whether the target opening is consistent with the detected opening again, and compensates and adjusts the valve opening if the target opening is inconsistent with the detected opening.
Additional aspects 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
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a flow chart of the steps of a valve opening adjustment method of the present invention;
FIG. 2 is a schematic view of a two-body solenoid valve of the present invention;
FIG. 3 is a diagram illustrating an adjustment of a difference coordinate system according to the present invention;
FIG. 4 is a schematic diagram of a differential coordinate system according to the present invention;
Fig. 5 is a schematic block diagram of a valve opening control device of the present invention;
in the figure: 101. a solenoid valve, 102, a water inlet; 103. a water outlet; 104. a fluid passage.
Detailed Description
The invention is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the invention easy to understand.
In embodiment 1, referring to fig. 1, the present application provides a valve opening adjustment method, including step S1, step S2, step S3, step S4, and step S5.
Referring to fig. 2, step S1, replacing the original valve, and controlling the water flow in the pipeline by the size of the section of the fluid channel 104 inside the double-body electromagnetic valve; the double-body electromagnetic valve is formed by integrating two electromagnetic valves 101, and the two electromagnetic valves 101 share one water inlet 102 and one water outlet 103; the double-body electromagnetic valve comprises a water inlet 102, a water outlet 103, a fluid channel 104 and a channel valve; the water inlet 102 and the water outlet 103 are used for the inlet and outlet of fluid in the pipeline; the fluid channel 104 is used for fluid to flow from the water inlet 102 to the water outlet 103; the channel valve is used for controlling the size of the channel cross-sectional area of the fluid channel 104;
in the implementation, as shown in fig. 2, the two-body solenoid valve 102 is a solenoid valve in the prior art; the double-body electromagnetic valve can effectively relieve the pressure of fluid on a valve piston or a valve rod, and the fluid channel 104 bears most of water pressure so as to prolong the service life of the valve; the size of the cross section area of the channel is the valve opening, and the valve opening in the embodiment is directly expressed by percentage.
Step S2, detecting the valve opening of the double-body electromagnetic valve; step S2 comprises the following sub-steps:
step S201, detecting the valve opening of the double-body electromagnetic valve to obtain a detected opening;
step S202, an opening control signal is obtained, and a valve opening corresponding to the opening control signal is marked as a target opening;
step S203, comparing the detected opening with the target opening, and outputting an opening accurate signal if the detected opening is the same as the target opening; outputting an opening inaccuracy signal if the detected opening is different from the target opening;
step S204, the opening degree accurate signal and the opening degree inaccurate signal are collectively called an opening degree feedback signal;
in specific implementation, when the valve opening is currently adjusted, the valve opening desired by the user is 70%, that is, the target opening is 70%; the detected valve opening is detected by adopting an existing valve opening instrument, the detected opening is 70.2%, and the detected opening is different from the target opening through comparison, so that an inaccurate opening signal is output.
Step S3, controlling the valve opening of the double-body electromagnetic valve and outputting an opening control signal; step S3 comprises the following sub-steps:
step S301, receiving the valve opening input by a user, marking the valve opening as an input opening, and outputting an opening control signal;
In specific implementation, the input opening is 70%, and a 70% control signal is output;
step S302, analyzing the relation between the adjustment value of the valve opening and the error; in practical application, if the abrasion of the internal parts of the valve is small, a certain relationship exists between the valve opening and the adjustment opening, and the larger the adjustment opening is, the larger the opening difference value is, the smaller the adjustment opening is, and the smaller the opening difference value is, so that the relationship between the two is analyzed, and the accuracy of the valve opening adjustment can be improved;
step S302 includes the following sub-steps:
step S3021, obtaining a valve opening before adjustment of the two-body electromagnetic valve, and marking the valve opening as the opening before adjustment; acquiring a target opening;
step S3022, calculating a difference between the opening before adjustment and the target opening, marking the difference as an adjustment opening, and recording the adjustment opening for each adjustment of the valve opening;
step S3023, obtaining a target opening; receiving an opening feedback signal, and if the opening feedback signal is an inaccurate opening signal, recording the target opening and the detected opening at the moment; subtracting the target opening from the detected opening to obtain an opening difference;
in the specific implementation, the opening before adjustment is obtained and the target opening is obtained and is 50%, namely the adjustment opening is 20%, the target opening recorded this time is 70%, the detected opening is 70.4%, the calculated opening difference is 0.4%, and the recorded adjustment opening and opening difference are shown in the following table 1:
Table 1 adjustment of opening degree and opening degree difference
Referring to fig. 3, in step S3024, a rectangular coordinate system is established with the input order as the horizontal axis and the opening difference as the vertical axis, and named as an adjustment difference coordinate system, an adjustment difference coordinate system is established for each adjustment opening, and the adjustment opening and the corresponding opening difference are input into the corresponding adjustment difference coordinate system;
step S3025, performing linear fitting on the adjustment difference coordinate system to obtain an adjustment fitting function;
in specific implementation, as shown in fig. 3, a 20% adjustment difference coordinate system is subjected to linear fitting to obtain a 20% adjustment fitting function as b=0.0004×v+0.0962, where B is an opening difference value and V is an input sequence;
step S303, receiving an opening feedback signal and analyzing the opening of the valve;
step S303 comprises the following sub-steps:
step S3031, obtaining an opening difference value, recording the opening difference value into an error database, numbering the opening difference value according to the recorded sequence, naming the opening difference value as a difference value number, and passing through a symbol S n N is a positive integer;
in the implementation, the obtained opening difference value is 0.4%, the target opening is 70%, and the received opening feedback signal is an opening inaccurate signal; the partial data of the error database are shown in table 2 below:
Table 2 partial data of error database
Referring to fig. 4, step S3032 establishes a difference coordinate system with the difference number as the X axis and the opening difference as the Y axis, and records the opening difference in the error database into the difference coordinate system;
in specific implementation, the opening difference value in the error database is recorded into a difference value coordinate system to obtain fig. 4;
step S3033, analyzing the difference coordinate system;
step S3033 includes the following sub-steps:
step S303301, performing linear fitting on the difference coordinate system to obtain a linear fitting function;
step S303302, numbering the next difference, S n+1 Substituting the predicted difference value into a linear fitting function to obtain a predicted difference value;
in a specific implementation, the linear fitting function is y=0.0094×x+0.1321; wherein Y is the opening difference, X is the subscript n of the difference number, and X is the multiplication operator; the difference in this embodiment is numbered S 32 The next time the valve opening control is performed, the difference number is S 33 Substituting 33 into the linear fitting function to obtain Y=0.4%, reserving one decimal place for the calculation result, and marking the calculation resultMarking as a prediction difference value;
step S303304, outputting an opening control signal, wherein the regulated value is an opening difference value plus an input opening;
in the specific implementation, in the valve opening control, the valve opening has deviation, the valve opening is not adjusted after the analysis of the opening difference value, and at the moment, the influence of the abrasion of the valve on the adjustment value can be ignored under the general condition when the valve is directly adjusted by the opening difference value because the opening difference value is smaller, so the valve can be directly adjusted; the opening difference value is 0.4%, and a 70.4% control signal is output;
Step S304, selecting a best fit function; in practical application, both functions can be used as a prediction model for valve opening adjustment, and a model with higher fitting degree and more accurate prediction can improve the accuracy of valve opening adjustment, so that the best fitting function is required to be selected;
step S304 includes the following sub-steps:
step S3041, obtaining an adjustment opening when the valve opening is adjusted at this time, and naming the adjustment opening as a current opening; searching an adjustment fitting function corresponding to the current opening, naming the adjustment fitting function as the current fitting function, calculating the slope of the current fitting function, naming the slope as the function slope, and outputting a difference value stabilizing signal if the function slope is 0; if the slope of the function is not 0, outputting a difference unstable signal;
step S3042, if a difference stabilizing signal is output, taking the opening difference corresponding to the current fitting function as an opening adjustment value; if the output difference is unstable, the opening difference in the current fitting function is numbered by the symbol X i X represents i The corresponding opening difference value is Y i I is a positive integer;
in specific implementation, when the current opening is 20% and the 20% adjustment fitting function is b=0.0004×v+0.0962, the slope k= (B) is calculated 2 -B 1 )/(V 2 -V 1 ) Obtaining a function slope K of 0.0004, outputting a difference unstable signal if the function slope is not 0, numbering the opening difference in the current fitting function to obtain X i ，Y i Namely X i Corresponding opening difference values;
step (a)S3043X is as follows i Substituting the current fitting function to obtain a predicted value of the current fitting function, and naming the predicted value as a function predicted value; by the formula R i =Y i -f(X i ) Calculate X i Residual at, wherein R i For the ith residual error, f (X i ) A function predicted value;
step S3044, calculating the sum of squares of all residuals, i.eThe method comprises the steps of carrying out a first treatment on the surface of the Wherein H is the sum of squares of the residuals, and max (i) is the maximum value of i;
step S3045, calculating the residual square sum of the linear fitting function, which is represented by a symbol P; comparing H with P, and if H is smaller than or equal to P, marking the current fitting function as the best fitting function; if H is greater than P, marking the linear fitting function as a best fitting function;
in specific implementation, assuming that i is 1, 32 data are recorded in the current fitting function, max (i) is 32, substituting the current fitting function to obtain b=0.0004×1+0.0962, and calculating to obtain B0.0966, namely the function predicted value f (X i ) Opening difference Y at v=1 1 0.1, i.e. the 1 st residual error when i=1 is calculated is 0.0034, all residual errors are calculated in the same way, and then substitutedThe residual square sum H is calculated to be 0.0168; the linear fitting function is Y=0.0094 x+0.1321, the sum of squares of residual errors of the linear fitting function is 0.0763, and the current fitting function is marked as the best fitting function if H is smaller than P through comparison;
Step S3046, if the best fit function is the current fit function, X is determined to be i+1 Substituting the best fitting function, and marking the calculated value as an opening degree adjustment value; if the best fit function is a linear fit function, marking the predicted difference value as an opening degree adjustment value;
in specific implementation, the best fit function is b=0.0004×v+0.0962, and when the current maximum value of V is 32, calculating the value of B when v=33 to obtain b= 0.1094, reserving one-bit decimal as 0.1, and marking 0.1 as an opening degree adjustment value;
step S3047, the opening adjustment value is used for adding with the input opening to obtain a target opening so as to adjust the error of the detected opening;
step S3048, when the valve opening is regulated again, marking the input opening as the user expected opening, and adding the user expected opening and the opening regulating value to obtain an actual opening value;
step S3049, outputting an opening control signal according to the actual opening value;
in a specific implementation, in the next valve opening control, assuming that the input opening input by the user is 80% and the predicted difference is 0.4%, the actual opening value is obtained by 80% +0.4% = 80.4%, and the opening control signal is output based on the actual opening value, and if S n+1 The measured opening difference value is 0.1%, and the predicted difference value is added to the actual opening difference value because the predicted difference value is added to the current adjustment;
Step S305, detecting the valve opening after the adjustment error;
step S305 includes the following sub-steps:
step S3051, detecting the detected opening and the target opening of the double-body electromagnetic valve again after controlling the opening of the valve by taking the opening difference value as an opening control signal;
step S3052, judging whether the detected opening is the same as the target opening, if so, outputting an adjustment success signal; if the signals are different, outputting an adjustment failure signal;
in the specific implementation, the valve opening is secondarily adjusted, the target opening is 70.4%, the detected opening is 70.4%, and the target opening is the same as the detected opening through comparison, so that an adjustment success signal is output;
step S3053, if the adjustment failure signal is output, compensating and adjusting the detected opening;
step S3054, the compensation adjustment is to adjust the valve opening of the first compensation threshold value each time, and detect whether the detected opening is consistent with the target opening, if so, a compensation completion signal is output; if the signals are inconsistent, outputting a compensation unfinished signal;
step S3055, if the compensation incomplete signal is output, repeating the compensation adjustment until the compensation complete signal is output;
in particular, if the adjustment failure signal is not output, steps S3033 to S3035 are not executed.
S4, controlling the double-body electromagnetic valve; step S4 comprises the following sub-steps:
step S401, receiving an opening control signal;
step S402, controlling a double-body electromagnetic valve;
in a specific implementation, when the opening control signal is received as a 70% control signal, the cross-sectional area of the fluid channel 104 inside the double-body solenoid valve is controlled to be 70%.
Step S5, transmitting an opening control signal; transmitting signals, wherein the transmitted signals are all electric signals;
in particular implementations, the electrical signals communicated include an opening control signal, an opening feedback signal, an adjustment success signal, an adjustment failure signal, a compensation complete signal, and a compensation incomplete signal.
Embodiment 2 is different from embodiment 1 in that, in embodiment 1, in order to output the adjustment failure signal, further explanation of steps S3033 to S3035 is not possible, and therefore, this embodiment further explains steps S3033 to S3035, and aims to explain the execution process of steps S3033 to S3035; the detection opening degree in the embodiment is 70.4%, the target opening degree is 70.5%, and an adjustment failure signal is output;
step S3033, if the adjustment failure signal is output, compensating and adjusting the detected opening;
Step S3034, the compensation adjustment is to adjust the valve opening of the first compensation threshold value each time, detect whether the detected opening is consistent with the target opening, and output a compensation completion signal if the detected opening is consistent with the target opening; if the signals are inconsistent, outputting a compensation unfinished signal;
step S3035, if the compensation incomplete signal is output, the compensation adjustment is repeated until a compensation complete signal is output;
in the specific implementation, the compensation adjustment is from step S3034 to step S3035; the setting standard of the first compensation threshold value is high precision, the highest precision of the valve opening instrument is 0.1%, the first compensation threshold value is set to 0.1%, the detection opening is 70.4%, the target opening is 70.5%, the valve opening is increased by 0.1%, the detection is carried out again, the detection opening is 70.5%, and the detection opening is consistent with the target opening, and a compensation completion signal is output; because of the abrasion of the internal parts of the valve, the situation that the opening control is inaccurate exists, if the opening control needs to be increased by 0.1%, the opening control is only increased by 0.08% during actual adjustment, and therefore the valve opening can be controlled with the highest accuracy by adopting a circulation compensation mode, so that the aim of controlling the valve with the highest accuracy is fulfilled.
Embodiment 3, please refer to fig. 5, the present invention provides a valve opening control device, which includes a double-body electromagnetic valve, an opening detection mechanism, an electromagnetic valve control mechanism, a signal transmission mechanism and an opening control mechanism; the double-body electromagnetic valve, the opening detection mechanism, the electromagnetic valve control mechanism and the signal transmission mechanism are respectively in data connection with the opening control mechanism;
The double-body electromagnetic valve is used for replacing the original valve, and the water flow in the pipeline is controlled through the section size of the internal fluid channel 104; the double-body electromagnetic valve is formed by integrating two electromagnetic valves 101, and the two electromagnetic valves 101 share one water inlet 102 and one water outlet 103; the double-body electromagnetic valve comprises a water inlet 102, a water outlet 103, a fluid channel 104 and a channel valve; the water inlet 102 and the water outlet 103 are used for the inlet and outlet of fluid in the pipeline; the fluid channel 104 is used for fluid to flow from the water inlet 102 to the water outlet 103; the channel valve is used for controlling the size of the channel cross-sectional area of the fluid channel 104;
the opening detection mechanism is used for detecting the valve opening of the double-body electromagnetic valve; the opening detection mechanism comprises an opening detection unit and an opening feedback unit; the opening detection unit detects the opening of the valve by adopting a valve opening meter; the opening feedback unit is used for sending an opening feedback signal according to the opening of the valve;
the opening feedback unit is configured with an opening feedback strategy, and the opening feedback strategy comprises:
detecting the valve opening of the double-body electromagnetic valve to obtain a detection opening;
acquiring an opening control signal, and marking the valve opening corresponding to the opening control signal as a target opening;
Comparing the detected opening with the target opening, and outputting an opening accurate signal if the detected opening is the same as the target opening; outputting an opening inaccuracy signal if the detected opening is different from the target opening;
the opening accurate signal and the opening inaccurate signal are collectively called an opening feedback signal;
the opening control mechanism is used for controlling the opening of the valve of the double-body electromagnetic valve and outputting an opening control signal; the opening control mechanism comprises an input opening control unit, a feedback opening control unit and a compensation detection unit; the input opening control unit is used for receiving the valve opening input by a user, marking the valve opening as an input opening and outputting an opening control signal; the feedback opening control unit is used for receiving the opening feedback signal and analyzing the opening of the valve; the compensation detection unit is used for detecting the valve opening after the adjustment error;
the feedback opening control unit is configured with a feedback opening control strategy, the feedback opening control strategy comprising:
acquiring a target opening; receiving an opening feedback signal, and if the opening feedback signal is an inaccurate opening signal, recording the target opening and the detected opening at the moment;
subtracting the target opening from the detected opening to obtain an opening difference;
Recording the opening difference value into an error database, numbering the opening difference value according to the recorded sequence, naming the opening difference value as a difference value number, and passing through a symbol S n N is a positive integer;
establishing a difference coordinate system by taking the difference number as an X axis and the opening difference as a Y axis, and recording the opening difference in an error database into the difference coordinate system;
analyzing the difference coordinate system;
analyzing the difference coordinate system includes:
performing linear fitting on the difference coordinate system to obtain a linear fitting function;
the next difference is numbered, S n+1 Substituting the predicted difference value into a linear fitting function to obtain a predicted difference value;
taking the predicted difference value as an opening adjustment value when the opening of the valve is adjusted next time; the opening adjustment value is used for adding with the input opening to obtain a target opening so as to adjust the error of the detected opening;
outputting an opening control signal, wherein the regulated value is an opening difference value plus an input opening;
when the valve opening is regulated again, marking the input opening as a user expected opening, and adding the user expected opening and an opening regulating value to obtain an actual opening value;
outputting an opening control signal according to the actual opening value;
in the pair S n+1 When analysis is carried out, the measured opening difference value should be added with an opening adjustment value;
The compensation detection unit is configured with a compensation detection strategy comprising:
the opening difference value is used as an opening control signal to control the opening of the valve, and then the detected opening and the target opening of the double-body electromagnetic valve are detected again;
judging whether the detected opening is the same as the target opening, and if so, outputting an adjustment success signal; if the signals are different, outputting an adjustment failure signal;
if the adjustment failure signal is output, compensating and adjusting the detected opening;
the compensation adjustment is to adjust the valve opening of the first compensation threshold value each time, detect whether the detected opening is consistent with the target opening, and output a compensation completion signal if the detected opening is consistent with the target opening; if the signals are inconsistent, outputting a compensation unfinished signal;
if the compensation unfinished signal is output, repeating compensation adjustment until a compensation finished signal is output;
the electromagnetic valve control mechanism is used for controlling the double-body electromagnetic valve; the electromagnetic valve control mechanism comprises a signal receiving unit and an electromagnetic valve control unit; the signal receiving unit is used for receiving the opening control signal; the electromagnetic valve control unit is used for controlling the double-body electromagnetic valve according to the opening control signal;
the signal transmission mechanism is used for transmitting an opening control signal; the signal transmission mechanism is used for transmitting signals, and the transmitted signals are all electric signals.
Working principle: the problem of large abrasion to a valve when fluid in a pipeline is rapidly converted from large flow to small flow is solved through the double-body electromagnetic valve, whether the detected opening of the double-body electromagnetic valve is the same as the target opening required by a user is detected through the opening detection mechanism, an opening difference value is calculated and recorded through the feedback opening control unit when the detected opening is different from the target opening required by the user, an adjustment fitting function is analyzed through an adjustment difference coordinate system, a linear fitting function of the opening difference value is analyzed through the difference coordinate system, whether the adjustment fitting function is selected or not is judged based on the slope of the adjustment fitting function, if not, the residual square sum of the adjustment fitting function and the linear fitting function is calculated, the function with the smallest residual square sum is selected as the best fitting function, errors in next valve opening control are predicted based on the best fitting function, the valve opening is prevented in advance, secondary adjustment is carried out, whether the valve opening is accurate is detected through the compensation detection unit, and compensation adjustment is carried out when the valve opening is inaccurate.
It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media having computer-usable program code embodied therein. The storage medium may be implemented by any type or combination of volatile or nonvolatile Memory devices, such as static random access Memory (Static Random Access Memory, SRAM), electrically erasable Programmable Read-Only Memory (Electrically Erasable Programmable Read-Only Memory, EEPROM), erasable Programmable Read-Only Memory (Erasable Programmable Red Only Memory, EPROM), programmable Read-Only Memory (PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk. These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
The above examples are only specific embodiments of the present invention, and are not intended to limit the scope of the present invention, but it should be understood by those skilled in the art that the present invention is not limited thereto, and that the present invention is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. The valve opening control device is characterized by comprising a double-body electromagnetic valve, an opening detection mechanism, an electromagnetic valve control mechanism, a signal transmission mechanism and an opening control mechanism; the double-body electromagnetic valve, the opening detection mechanism, the electromagnetic valve control mechanism and the signal transmission mechanism are respectively connected with the opening control mechanism in a data way;
The double-body electromagnetic valve is used for replacing the original valve, and the water flow in the pipeline is controlled through the section size of the internal fluid channel; the double-body electromagnetic valve is formed by integrating two electromagnetic valves, and the two electromagnetic valves share a water inlet and a water outlet;
the opening detection mechanism is used for detecting the valve opening of the double-body electromagnetic valve;
the opening control mechanism is used for controlling the opening of the valve of the double-body electromagnetic valve and outputting an opening control signal;
the electromagnetic valve control mechanism is used for controlling the double-body electromagnetic valve;
the signal transmission mechanism is used for transmitting an opening control signal.
2. The valve opening control device according to claim 1, wherein the two-body solenoid valve includes a water inlet, a water outlet, a fluid passage, and a passage valve; the water inlet and the water outlet are used for the inlet and the outlet of fluid in the pipeline; the fluid channel is used for supplying fluid to flow from the water inlet to the water outlet; the channel valve is used for controlling the size of the channel sectional area of the fluid channel.
3. A valve opening degree control apparatus according to claim 2, wherein the opening degree detection mechanism includes an opening degree detection unit and an opening degree feedback unit; the opening detection unit detects the opening of the valve by adopting a valve opening meter; the opening feedback unit is used for sending an opening feedback signal according to the opening of the valve.
4. A valve opening degree control apparatus according to claim 3, wherein the opening degree feedback unit is configured with an opening degree feedback strategy including:
detecting the valve opening of the double-body electromagnetic valve to obtain a detection opening;
acquiring an opening control signal, and marking the valve opening corresponding to the opening control signal as a target opening;
comparing the detected opening with the target opening, and outputting an opening accurate signal if the detected opening is the same as the target opening; outputting an opening inaccuracy signal if the detected opening is different from the target opening;
the opening degree accurate signal and the opening degree inaccurate signal are collectively referred to as an opening degree feedback signal.
5. The valve opening control device according to claim 4, wherein the opening control mechanism comprises an input opening control unit, an opening relation analysis unit, a feedback opening control unit, a fitting judgment unit, and a compensation detection unit; the input opening control unit is used for receiving the valve opening input by a user, marking the valve opening as an input opening and outputting an opening control signal; the opening relation analysis unit is used for analyzing the relation between the adjustment value of the valve opening and the error; the feedback opening control unit is used for receiving the opening feedback signal and analyzing the opening of the valve; the fitting judgment unit is used for selecting a best fitting function; the compensation detection unit is used for detecting the valve opening after the adjustment error.
6. The valve opening degree control apparatus according to claim 5, wherein the opening degree relation analysis unit is configured with an opening degree relation analysis strategy including:
acquiring the valve opening before adjustment of the double-body electromagnetic valve, and marking the valve opening as the opening before adjustment; acquiring a target opening;
calculating the difference between the opening before adjustment and the target opening, marking the difference as an adjustment opening, and recording the adjustment opening for each valve opening adjustment;
acquiring a target opening; receiving an opening feedback signal, and if the opening feedback signal is an inaccurate opening signal, recording the target opening and the detected opening at the moment; subtracting the target opening from the detected opening to obtain an opening difference;
establishing a rectangular coordinate system by taking the recorded sequence as a horizontal axis and the opening difference as a vertical axis, naming the rectangular coordinate system as an adjustment difference coordinate system, establishing an adjustment difference coordinate system for each adjustment opening, and recording the adjustment opening and the corresponding opening difference into the corresponding adjustment difference coordinate system;
and performing linear fitting on the adjustment difference coordinate system to obtain an adjustment fitting function.
7. The valve opening control apparatus according to claim 6, wherein the feedback opening control unit is configured with a feedback opening control strategy including:
Acquiring an opening difference value, recording the opening difference value into an error database, numbering the opening difference value according to the recorded sequence, naming the opening difference value as a difference value number, and passing through a symbol S n N is a positive integer;
establishing a difference coordinate system by taking the difference number as an X axis and the opening difference as a Y axis, and recording the opening difference in an error database into the difference coordinate system;
and analyzing the difference coordinate system.
8. The valve opening control device according to claim 7, wherein the analyzing the difference coordinate system includes:
performing linear fitting on the difference coordinate system to obtain a linear fitting function;
the next difference is numbered, S n+1 Substituting the predicted difference value into a linear fitting function to obtain a predicted difference value;
and outputting an opening control signal, wherein the regulated value is an opening difference value plus an input opening.
9. The valve opening degree control apparatus according to claim 8, wherein the fitting judgment unit is configured with a fitting judgment strategy including:
acquiring an adjustment opening when the valve opening is adjusted at this time, and naming the adjustment opening as a current opening; searching an adjustment fitting function corresponding to the current opening, naming the adjustment fitting function as the current fitting function, calculating the slope of the current fitting function, naming the slope as the function slope, and outputting a difference value stabilizing signal if the function slope is 0; if the slope of the function is not 0, outputting a difference unstable signal;
If the difference value stabilizing signal is output, taking the opening difference value corresponding to the current fitting function as an opening adjustment value; if the output difference is unstable, the opening difference in the current fitting function is numbered by the symbol X i X represents i The corresponding opening difference value is Y i I is a positive integer;
x is to be i Substituting the current fitting function to obtain a predicted value of the current fitting function, and naming the predicted value as a function predicted value; by the formula R i =Y i -f(X i ) Calculate X i Residual at, wherein R i For the ith residual error, f (X i ) A function predicted value;
calculate all residualsSum of squares, i.eThe method comprises the steps of carrying out a first treatment on the surface of the Wherein H is the sum of squares of the residuals, and max (i) is the maximum value of i;
calculating the residual square sum of the linear fitting function, which is represented by a symbol P;
comparing H with P, and if H is smaller than or equal to P, marking the current fitting function as the best fitting function; if H is greater than P, marking the linear fitting function as a best fitting function;
if the best fit function is the current fit function, X is then i+1 Substituting the best fitting function, and marking the calculated value as an opening degree adjustment value; if the best fit function is a linear fit function, marking the predicted difference value as an opening degree adjustment value;
the opening adjustment value is used for adding with the input opening to obtain a target opening so as to adjust the error of the detected opening;
When the valve opening is regulated again, marking the input opening as a user expected opening, and adding the user expected opening and an opening regulating value to obtain an actual opening value;
and outputting an opening control signal according to the actual opening value.
10. The valve opening degree control apparatus according to claim 9, wherein the compensation detection unit is configured with a compensation detection strategy including:
the opening difference value is used as an opening control signal to control the opening of the valve, and then the detected opening and the target opening of the double-body electromagnetic valve are detected again;
judging whether the detected opening is the same as the target opening, and if so, outputting an adjustment success signal; if the signals are different, outputting an adjustment failure signal;
if the adjustment failure signal is output, compensating and adjusting the detected opening;
the compensation is adjusted to adjust the valve opening of the first compensation threshold value each time, whether the detected opening is consistent with the target opening or not is detected, and if so, a compensation completion signal is output; if the signals are inconsistent, outputting a compensation unfinished signal;
if the compensation incomplete signal is output, the compensation adjustment is repeated until the compensation complete signal is output.
11. The valve opening degree control device according to claim 10, wherein the solenoid valve control mechanism includes a signal receiving unit and a solenoid valve control unit; the signal receiving unit is used for receiving an opening control signal; the electromagnetic valve control unit is used for controlling the double-body electromagnetic valve according to the opening control signal; the signal transmission mechanism is used for transmitting signals, and the transmitted signals are all electric signals.
12. A valve opening degree adjustment method applied to a valve opening degree control apparatus according to any one of claims 1 to 11, comprising the steps of:
step S1, replacing an original valve, and controlling water flow in a pipeline through the size of the section of a fluid channel in the double-body electromagnetic valve;
step S2, detecting the valve opening of the double-body electromagnetic valve;
step S3, controlling the valve opening of the double-body electromagnetic valve and outputting an opening control signal;
s4, controlling the double-body electromagnetic valve;
and S5, transmitting an opening control signal.
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