Gas source pressure control method of gas pressure system and related device thereof

Abstract

The invention discloses a gas source pressure control method of a gas pressure system and a related device thereof, and the method comprises the steps: determining the relation between various control parameters input by the system through a self-adaptive algorithm, so as to determine a pressure variable control parameter which has the greatest influence on the system, dividing a to-be-regulated pressure section into a plurality of pressure sections, in the first proportional control valve and the second proportional control valve, each pressure section is regulated and controlled in a segmented mode by controlling the pressure variable control parameters, the pressure variable control parameters of the two proportional control valves under the pressure section are obtained, and therefore the whole-section control parameters of the pressure section to be regulated and controlled are obtained. Therefore, the pressure variable control parameters with the maximum influence control effect on the system are screened out under the self-adaptive algorithm, the control variables are greatly reduced, the pressure variable control parameters are automatically optimized and adjusted in the two proportional control valves, reliable control parameters can be automatically obtained under different gas source pressures and different target pressures, and the control efficiency is improved. And the control precision and stability of the gas pressure system are improved.

Description

Technical Field

[0001] The present application relates to the technical field of gas pressure control, and more specifically, to a gas source pressure control method of a gas pressure system and related devices thereof. Background Art

[0002] In today's industrial production and scientific research and many other fields, gas pressure systems play a vital role because they often have extremely high requirements for accuracy. At present, in the pressure control of gas pressure systems, the main method is to control two proportional valves at the same time, and the PID system is generally used for control.

[0003] However, due to the differences in devices between different devices, the control parameters of different devices cannot be universal. Each device is like an independent individual. Before it is put into use, it must go through a tedious process of manually adjusting parameters. PID parameters are used to control the voltage regulation speed, which directly corresponds to the speed and stability of pressure control. If the parameters are too small, the control speed is slow, and if the parameters are too large, the control speed is fast. There may be fluctuations and it cannot stabilize at the target value. Therefore, technicians need to carefully debug and optimize each device. This process may take hours or even days, which seriously affects the speed of the equipment going online and production efficiency. On the other hand, manual adjustment of parameters also requires a lot of manpower costs. Professional technicians need to have rich experience and professional knowledge, and training such technicians also requires a lot of resources. Due to the influence of human factors, parameter adjustment may be inaccurate, which will directly affect the accuracy and stability of the gas pressure system.

[0004] How to find high-precision control parameters for the gas pressure system, reduce the workload of manual parameter adjustment, and improve the control accuracy and stability of the gas pressure system are issues that need attention. Summary of the invention

[0005] In view of the above problems, the present application provides a gas source pressure control method and related devices for a gas pressure system to reduce the workload of manual parameter adjustment and improve the control accuracy and stability of the gas pressure system.

[0006] In order to achieve the above objectives, the specific plan is proposed as follows:

[0007] A method for controlling gas source pressure of a gas pressure system, comprising:

[0008] Determining, by an adaptive algorithm, a relationship between a system input and various control parameters in a gas pressure system, wherein the various control parameters include a pressure variable control parameter that has the greatest impact on the gas pressure system;

[0009] Dividing the pressure section to be regulated of the gas pressure system into a plurality of pressure sections;

[0010] In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment;

[0011] After obtaining the full-section control parameters of the pressure section to be regulated, each control parameter of the first proportional control valve and each control parameter of the second proportional control valve are applied to the gas pressure system to complete the gas source pressure control of the gas pressure system.

[0012] Optionally, the expression of the relationship is:

[0013]

[0014] in, Input voltage to the proportional control valve of the gas pressure system, is the output pressure of the gas pressure system, To customize the compensation value, is a constant determined by modeling the gas pressure system, is the first control parameter, is the second control parameter, is the pressure variable control parameter, is the error variable, is the preset pressure value.

[0015] Optionally, in the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment, including:

[0016] Step S21: for each pressure segment, perform gas control debugging with the median value of the pressure segment, and adjust the pressure variable control parameter of the first proportional control valve of the gas pressure system and the pressure variable control parameter of the second proportional control valve of the gas pressure system;

[0017] Step S22: for each pressure section, if the pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve are changed before and after regulation, then return to execute step S21 with the currently changed pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve;

[0018] Step S23: for each pressure section, if the pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve are unchanged before and after the regulation, and the number of consecutive air adjustments of the pressure section under the unchanged pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve does not reach a preset number, then continue to return to the execution of step S21;

[0019] Step S24: For each pressure segment, if the number of consecutive air debugging of the pressure segment has reached the preset number of times under the unchanged pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve, determine the pressure variable control parameters of the first proportional control valve under the pressure segment, and the pressure variable control parameters of the second proportional control valve under the pressure segment.

[0020] Optionally, regulating a pressure variable control parameter of a first proportional control valve of the gas pressure system and a pressure variable control parameter of a second proportional control valve of the gas pressure system includes:

[0021] In the preset rise time judgment stage, if the rise time for the output pressure to rise to the preset pressure target value is greater than the preset maximum rise time, the pressure variable control parameter of the first proportional control valve of the gas pressure system is increased; if the rise time is less than the preset minimum rise time, the pressure variable control parameter of the first proportional control valve is reduced;

[0022] In the preset overshoot judgment stage, if the overshoot amplitude of the output pressure is greater than the preset overshoot amplitude value, reducing the pressure variable control parameter of the first proportional control valve;

[0023] In the preset drop time judgment stage, if the drop time from the output pressure to the preset pressure target value is greater than the preset drop time maximum value, the pressure variable control parameter of the second proportional control valve of the gas pressure system is increased; if the drop time is less than the preset drop time minimum value, the pressure variable control parameter of the second proportional control valve is reduced;

[0024] In the preset callback judgment stage, if the callback time for the output pressure to callback to the preset pressure target value is greater than the preset callback time maximum value, the pressure variable control parameter of the first proportional control valve is increased; if the callback amplitude of the output pressure exceeds the preset target pressure range, the pressure variable control parameter of the first proportional control valve is reduced.

[0025] Optionally, in the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment, including:

[0026] In the first proportional control valve and the second proportional control valve of the gas pressure system, the pressure variable control parameter is controlled by fixing the first control parameter and the second control parameter, and each pressure segment is regulated in sections to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment, and the pressure variable control parameter of the second proportional control valve under the pressure segment.

[0027] Optionally, in the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment, including:

[0028] In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is segmented and regulated under different gas sources by controlling the pressure variable control parameters, so as to obtain the pressure variable control parameters of the first proportional control valve under the pressure segment and the pressure variable control parameters of the second proportional control valve under the pressure segment.

[0029] A gas source pressure control device for a gas pressure system, comprising:

[0030] a pressure variable control parameter determination unit, configured to determine, by an adaptive algorithm, a relationship between a system input and various control parameters in a gas pressure system, wherein the various control parameters include a pressure variable control parameter having the greatest impact on the gas pressure system;

[0031] A pressure segmentation unit, used to divide the pressure segment to be regulated of the gas pressure system into a plurality of pressure segments;

[0032] A segmented control unit is used to perform segmented control on each pressure segment in the first proportional control valve and the second proportional control valve of the gas pressure system by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment;

[0033] A control parameter application unit is used to apply the various control parameters of the first proportional control valve and the various control parameters of the second proportional control valve to the gas pressure system after obtaining the full-section control parameters of the pressure section to be regulated, so as to complete the gas source pressure control of the gas pressure system.

[0034] Optionally, the segmented control unit includes:

[0035] The proportional valve control and regulation unit is used to execute step S21: for each pressure segment, perform gas control debugging with the median value of the pressure segment, and regulate the pressure variable control parameter of the first proportional control valve of the gas pressure system and the pressure variable control parameter of the second proportional control valve of the gas pressure system;

[0036] A first continuous regulation unit is used to execute step S22: for each pressure section, if the pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve are changed before and after regulation, then return to the proportional valve control regulation unit with the currently changed pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve;

[0037] A second continuous control unit is used to execute step S23: for each pressure section, if the pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve are not changed before and after the control, and the number of consecutive air commissioning of the pressure section under the unchanged pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve does not reach a preset number, then continue to return to the execution of the proportional valve control control unit;

[0038] The proportional valve parameter determination unit is used to execute step S24: for each pressure segment, if the number of consecutive air debugging of the pressure segment has reached the preset number of times under the unchanged pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve, determine the pressure variable control parameters of the first proportional control valve under the pressure segment, and the pressure variable control parameters of the second proportional control valve under the pressure segment.

[0039] Optionally, the expression of the relationship is:

[0040]

[0041] in, Input voltage to the proportional control valve of the gas pressure system, is the output pressure of the gas pressure system, To customize the compensation value, is a constant determined by modeling the gas pressure system, is the first control parameter, is the second control parameter, is the pressure variable control parameter, is the error variable, is the preset pressure value.

[0042] Optionally, the proportional valve control and regulation unit includes:

[0043] A first proportional valve control regulating subunit is used to increase the pressure variable control parameter of the first proportional control valve of the gas pressure system if the rise time of the output pressure rising to the preset pressure target value is greater than the preset maximum rise time in the preset rise time judgment stage, and to reduce the pressure variable control parameter of the first proportional control valve if the rise time is less than the preset minimum rise time;

[0044] A second proportional valve control regulating subunit, configured to reduce a pressure variable control parameter of the first proportional control valve if the overshoot amplitude of the output pressure is greater than a preset overshoot amplitude value in a preset overshoot judgment stage;

[0045] A third proportional valve control and regulation subunit is used to increase the pressure variable control parameter of the second proportional control valve of the gas pressure system if the drop time from the output pressure to the preset pressure target value is greater than the preset drop time maximum value in the preset drop time judgment stage, and to reduce the pressure variable control parameter of the second proportional control valve if the drop time is less than the preset drop time minimum value;

[0046] The fourth proportional valve control and regulation subunit is used to increase the pressure variable control parameter of the first proportional control valve if the callback time for the output pressure to callback to the preset pressure target value is greater than the preset callback time maximum value in the preset callback judgment stage; if the callback amplitude of the output pressure exceeds the preset target pressure range, reduce the pressure variable control parameter of the first proportional control valve.

[0047] Optionally, the segmented control unit includes:

[0048] The segmented regulation subunit is used to control the pressure variable control parameter in the first proportional control valve and the second proportional control valve of the gas pressure system by fixing the first control parameter and the second control parameter, and to perform segmented regulation on each pressure segment to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment, and the pressure variable control parameter of the second proportional control valve under the pressure segment.

[0049] Optionally, the segmented control unit includes:

[0050] A multi-gas source segmented control unit is used to perform segmented control on each pressure segment under different gas sources in the first proportional control valve and the second proportional control valve of the gas pressure system by controlling the pressure variable control parameters, so as to obtain the pressure variable control parameters of the first proportional control valve under the pressure segment and the pressure variable control parameters of the second proportional control valve under the pressure segment.

[0051] A gas source pressure control device for a gas pressure system, comprising a memory and a processor;

[0052] The memory is used to store programs;

[0053] The processor is used to execute the program to implement the various steps of the gas source pressure control method of the gas pressure system as described above.

[0054] A storage medium having a computer program stored thereon, characterized in that when the computer program is executed by a processor, each step of the gas source pressure control method of the gas pressure system as described above is implemented.

[0055] By means of the above technical scheme, the present application determines the relationship between various control parameters of the system input in the gas pressure system through an adaptive algorithm to determine the pressure variable control parameter that has the greatest impact on the system. Furthermore, the pressure segment to be regulated in the gas pressure system is divided into several pressure segments. In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is segmented and regulated by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment, so as to obtain the full-segment control parameter of the pressure segment to be regulated. It can be seen that the pressure variable control parameter that has the greatest impact on the control effect of the system can be screened out under the adaptive algorithm, which greatly reduces the control variable, thereby automatically optimizing and adjusting the pressure variable control parameter in the two proportional control valves, and realizing that reliable control parameters can be automatically obtained for different gas source pressures and different target pressures, thereby improving the control accuracy and stability of the gas pressure system. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0057] Figure 1 A schematic diagram of a flow chart for realizing gas source pressure control of a gas pressure system provided in an embodiment of the present application;

[0058] Figure 2A schematic diagram of a control structure of a gas pressure system provided in an embodiment of the present application;

[0059] Figure 3 A schematic diagram of parameter control for realizing a gas source pressure control process provided in an embodiment of the present application;

[0060] Figure 4 A schematic diagram of a process for implementing pressure variable control parameter control provided in an embodiment of the present application;

[0061] Figure 5 A pressure change curve in a gas pressure control process provided in an embodiment of the present application;

[0062] Figure 6 A schematic diagram of the structure of a device for realizing gas source pressure control of a gas pressure system provided in an embodiment of the present application;

[0063] Figure 7 A schematic diagram of the structure of a device for realizing gas source pressure control of a gas pressure system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0065] The solution of the present application can be implemented based on a terminal with data processing capabilities, which can be a computer, a server, a cloud, etc. The terminal can be applied to a gas pressure system, which can include two proportional control valves, each of which can control corresponding control parameters.

[0066] Next, combine Figure 1 The gas source pressure control method of the gas pressure system of the present application may include the following steps:

[0067] Step S110: Determine the relationship between the system input and various control parameters in the gas pressure system through an adaptive algorithm.

[0068] Specifically, of the two proportional valves included in the gas pressure system, the first proportional control valve can be used to control the input pressure regulating end, and the second proportional control valve can be used to control the exhaust pressure regulating end. Figure 2As shown, in the proportional valve control structure of the gas pressure system, the actual value can be output according to the pressure target value and the current sensor detection. Generally, when the actual value is less than the target value, the first proportional valve control voltage can be increased to control the intake, and the second proportional valve is closed. When the actual value is greater than the target value, the first proportional valve is closed, and the second proportional valve control voltage can be increased to control the exhaust.

[0069] The various control parameters may include a pressure variable control parameter that has the greatest impact on the gas pressure system, and a plurality of parameters or control parameters that may be predetermined by modeling the gas pressure system.

[0070] Specifically, the expression of the relationship is:

[0071]

[0072] in, Input voltage for the proportional control valve of the gas pressure system, is the output pressure of the gas pressure system, To customize the compensation value, is a constant determined by modeling the gas pressure system, is the first control parameter, is the second control parameter, is the pressure variable control parameter, is the error variable, is the preset pressure value.

[0073] In order to reduce variables, a variety of uncertain parameter estimation methods can be used, such as least squares method / recursive least squares method, Kalman filtering method or Lyapunov function, etc. For example, the Lyapunov function can be used to calculate the adaptability rate of the gas pressure system.

[0074] Among them, the nonlinear dead zone model and hysteresis model can be given by the following equations:

[0075]

[0076] in, For system input, is the threshold voltage.

[0077]

[0078] Based on the above model, an adaptive controller can be designed. By selecting the output pressure state variable, the following equation can be obtained:

[0079]

[0080] in, For the desired pressure, , and is an unknown parameter.

[0081] From the equivalent model, the differential equation can be obtained as follows:

[0082]

[0083] Based on this, we can , and define the error variable , is the preset pressure value, then:

[0084]

[0085] To customize the compensation value, define:

[0086]

[0087] Then one of the solutions for the gas pressure system is:

[0088]

[0089] Substituting into the formula:

[0090]

[0091] Therefore, there is , after simplification, we can get ,in, .

[0092] Consider the following Lyapunov function:

[0093]

[0094] The adaptive rate of the gas pressure system is obtained as:

[0095]

[0096] in, is a diagonal matrix

[0097]

[0098] It is understandable that in the initial stage, , and will increase, and It will increase slowly as the error decreases until it decreases after overshoot. It is monotonically increasing.

[0099] It can be seen that according to the above calculation, after testing, the fixed compensation values ​​of several parameters are determined, reducing the variables to Among them, the pressure variable control parameter of the first proportional control valve can be expressed as , the pressure variable control parameter of the second proportional control valve can be expressed as .

[0100] Step S120: Divide the pressure section to be regulated in the gas pressure system into a plurality of pressure sections.

[0101] It is understandable that before regulation, the adaptive algorithm can be used to determine the and Parameters other than , , , It can be pre-customized according to the gas pressure system, but in the pressure section to be regulated, the pressure variable control parameters adopted by the two proportional control valves for each pressure section are different. Therefore, the pressure section to be regulated needs to be segmented to achieve segmented regulation.

[0102] Step S130: In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameters to obtain the pressure variable control parameters of the first proportional control valve under the pressure segment and the pressure variable control parameters of the second proportional control valve under the pressure segment.

[0103] Specifically, to ensure stable and rapid pressure control, acceptable interval parameters can be set to avoid slow control due to too long time and gas control fluctuations due to too short time.

[0104] Step S140: After obtaining the full-section control parameters of the pressure section to be regulated, each control parameter of the first proportional control valve and each control parameter of the second proportional control valve are applied to the gas pressure system to complete the output pressure control of the gas pressure system.

[0105] Among them, the control logic of each parameter of the gas pressure system during the gas source pressure control process is as follows: Figure 3 shown.

[0106] The gas source pressure control method of the gas pressure system provided in this embodiment determines the relationship between various control parameters of the system input in the gas pressure system through an adaptive algorithm to determine the pressure variable control parameter that has the greatest impact on the system. Further, the pressure segment to be regulated in the gas pressure system is divided into several pressure segments. In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is segmented and regulated by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment, so as to obtain the full-segment control parameter of the pressure segment to be regulated. It can be seen that the pressure variable control parameter that has the greatest impact on the control effect of the system can be screened out under the adaptive algorithm, which greatly reduces the control variable, thereby automatically optimizing and adjusting the pressure variable control parameter in the two proportional control valves, realizing that reliable control parameters can be automatically obtained for different gas source pressures and different target pressures, thereby improving the control accuracy and stability of the gas pressure system.

[0107] In some embodiments of the present application, the above step S130: in the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is segmented and regulated by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment, and the process of the pressure variable control parameter of the second proportional control valve under the pressure segment is introduced, such as Figure 4 As shown, the process may include:

[0108] Step S21: For each pressure segment, gas control debugging is performed based on the median value of the pressure segment, and the pressure variable control parameters of the first proportional control valve of the gas pressure system and the pressure variable control parameters of the second proportional control valve of the gas pressure system are adjusted.

[0109] Specifically, the pressure variable control parameters of the first proportional control valve and the second proportional control valve ( and ) can be regulated based on Figure 5 The four stages shown are respectively a rising time judgment stage, an overshoot judgment stage, a falling time judgment stage and a callback judgment stage.

[0110] The process can include:

[0111] S211: In the preset rise time judgment stage, if the rise time for the output pressure to rise to the preset pressure target value is greater than the preset maximum rise time, increase the pressure variable control parameter of the first proportional control valve of the gas pressure system; if the rise time is less than the preset minimum rise time, reduce the pressure variable control parameter of the first proportional control valve.

[0112] Specifically, pump air to the minimum air source pressure Pmin, start controlling to the target pressure a1 of the n1 segment, and judge the rise time according to the pressure change curve: if it is greater than the maximum rise time, increase ; less than the minimum rise time, reduce .

[0113] In the actual operation, after the minimum air source pressure Pmin is determined in each pressure segment, the air is pumped to the maximum air source pressure Pmax, and the process of step S21 is performed. Minimum , and Pmax corresponding to Maximum .

[0114] S212: In the preset overshoot determination stage, if the overshoot amplitude of the output pressure is greater than a preset overshoot amplitude, reducing the pressure variable control parameter of the first proportional control valve.

[0115] Specifically, determine the overshoot: if it is greater than the overshoot amplitude, reduce .

[0116] S213: In the preset descent time judgment stage, if the descent time for the output pressure to drop to the preset pressure target value is greater than the preset maximum descent time, increase the pressure variable control parameter of the second proportional control valve of the gas pressure system; if the descent time is less than the preset minimum descent time, reduce the pressure variable control parameter of the second proportional control valve.

[0117] Specifically, determine the fall time: if it is greater than the maximum fall time, increase ; If it is less than the minimum fall time, reduce .

[0118] S214: In the preset callback judgment stage, if the callback time for the output pressure to callback to the preset pressure target value is greater than the preset callback time maximum value, increase the pressure variable control parameter of the first proportional control valve; if the callback amplitude of the output pressure exceeds the preset target pressure range, reduce the pressure variable control parameter of the first proportional control valve.

[0119] Specifically, determine the callback: if it is greater than the maximum callback time, increase ; The callback exceeds the target pressure range, reduce .

[0120] This completes the debugging.

[0121] Step S22: for each pressure section, determine whether the pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve are changed before and after regulation. If so, return to step S21, if not, execute step S23.

[0122] Specifically, for each pressure segment, if the pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve change before and after regulation, the execution of step S21 is returned based on the currently changed pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve.

[0123] It is understandable that for each pressure range, it is necessary to repeat the debugging several times after the parameters are stabilized before the pressure range can be determined. and , therefore, in and If it is not stable, it is necessary to return to step S21 for further debugging.

[0124] Step S23: For each pressure section, determine whether the number of consecutive air debugging of the pressure section has not reached a preset number under the unchanged pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve. If so, return to execute step S21, if not, execute step S24.

[0125] Specifically, for each pressure segment, if the pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve are not changed before and after the regulation, and the number of consecutive air debugging of the pressure segment under the unchanged pressure variable control parameters of the first proportional control valve and the second proportional control valve does not reach the preset number, then continue to return to execute step S21.

[0126] Among them, the preset number of times can be 5 times.

[0127] It is understandable that for each pressure range, it is necessary to repeat the debugging several times after the parameters are stabilized before the pressure range can be determined. and , therefore, in and After stabilization, if the number of repeated debugging does not reach the set number, it is necessary to return to step S21 for debugging again.

[0128] Step S24: For each pressure segment, if the number of consecutive air debugging of the pressure segment has reached a preset number of times without changing the pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve, determine the pressure variable control parameters of the first proportional control valve under the pressure segment, and the pressure variable control parameters of the second proportional control valve under the pressure segment.

[0129] It is understandable that for each pressure range, it is necessary to repeat the debugging several times after the parameters are stabilized before the pressure range can be determined. and , therefore, in and After stabilization and the number of repetitions has reached the set number, the pressure section can be determined. and .

[0130] For example, for segment n1, the control target pressure a1 can be obtained when the maximum gas source pressure Pmax is input. max and max, can be obtained when the minimum gas source pressure Pmin is input min and 3min. Then Pmax~Pmin and max~ min and max~ min is linearly corresponding, so there are corresponding control parameters for the changing gas source pressure. Similarly, the control parameters of the full-section control target pressure can be obtained.

[0131] Furthermore, the gas source pressure can be increased to multiple intermediate values, and the gas source pressure Px can be obtained when input x and x, and finally according to the gas source pressure from large to small Pmax~Px~Py~…~Pmin, max~ x~ y~…~ min and max~ x~ y~…~ min for linear correspondence, so as to obtain more accurate control parameters corresponding to the gas source pressure.

[0132] In some embodiments of the present application, the above step S130: in the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is segmented and regulated by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment, and the process of the pressure variable control parameter of the second proportional control valve under the pressure segment is introduced, and the process may include:

[0133] In the first proportional control valve and the second proportional control valve of the gas pressure system, the pressure variable control parameter is controlled by fixing the first control parameter and the second control parameter, and each pressure segment is regulated in sections to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment, and the pressure variable control parameter of the second proportional control valve under the pressure segment.

[0134] It is understandable that before regulation, the adaptive algorithm can be used to determine the and Parameters other than , , , Can be pre-customized according to the gas pressure system, so , , , It can remain unchanged throughout the entire pressure section to be regulated.

[0135] In some embodiments of the present application, the above step S130: in the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is segmented and regulated by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment, and the process of the pressure variable control parameter of the second proportional control valve under the pressure segment is introduced, and the process may include:

[0136] In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is segmented and regulated under different gas sources by controlling the pressure variable control parameters, so as to obtain the pressure variable control parameters of the first proportional control valve under the pressure segment and the pressure variable control parameters of the second proportional control valve under the pressure segment.

[0137] It can be understood that, in each pressure range, different gas sources are adopted for debugging, so that the pressure variable control parameters of the two proportional control valves can be adapted to different gas source pressures, thereby improving the universality of the pressure variable control parameters of the proportional control valves for different gas source pressures.

[0138] The following is a description of an apparatus for implementing gas source pressure control of a gas pressure system provided in an embodiment of the present application. The apparatus for implementing gas source pressure control of a gas pressure system described below and the method for implementing gas source pressure control of a gas pressure system described above can be referenced to each other.

[0139] See also Figure 6 , Figure 6 This is a schematic diagram of the structure of a device for realizing gas source pressure control of a gas pressure system disclosed in an embodiment of the present application.

[0140] like Figure 6 As shown, the device may include:

[0141] A pressure variable control parameter determination unit 11, used to determine the relationship between the system input and various control parameters in the gas pressure system through an adaptive algorithm, wherein the various control parameters include the pressure variable control parameter that has the greatest impact on the gas pressure system;

[0142] A pressure segmentation unit 12, used to divide the pressure segment to be regulated of the gas pressure system into a plurality of pressure segments;

[0143] A segmented control unit 13 is used to perform segmented control on each pressure segment in the first proportional control valve and the second proportional control valve of the gas pressure system by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment;

[0144] The control parameter application unit 14 is used to apply the various control parameters of the first proportional control valve and the various control parameters of the second proportional control valve to the gas pressure system after obtaining the full-section control parameters of the pressure section to be regulated, so as to complete the gas source pressure control of the gas pressure system.

[0145] Optionally, the expression of the relationship is:

[0146]

[0147] in, Input voltage to the proportional control valve of the gas pressure system, is the output pressure of the gas pressure system, To customize the compensation value, is a constant determined by modeling the gas pressure system, is the first control parameter, is the second control parameter, is the pressure variable control parameter, is the error variable, is the preset pressure value.

[0148] Optionally, the segmented control unit includes:

[0149] The proportional valve control and regulation unit is used to execute step S21: for each pressure segment, perform gas control debugging with the median value of the pressure segment, and regulate the pressure variable control parameter of the first proportional control valve of the gas pressure system and the pressure variable control parameter of the second proportional control valve of the gas pressure system;

[0150] A first continuous regulation unit is used to execute step S22: for each pressure section, if the pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve are changed before and after regulation, then return to the proportional valve control regulation unit with the currently changed pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve;

[0151] A second continuous control unit is used to execute step S23: for each pressure section, if the pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve are not changed before and after the control, and the number of consecutive air commissioning of the pressure section under the unchanged pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve does not reach a preset number, then continue to return to the execution of the proportional valve control control unit;

[0152] The proportional valve parameter determination unit is used to execute step S24: for each pressure segment, if the number of consecutive air debugging of the pressure segment has reached the preset number of times under the unchanged pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve, determine the pressure variable control parameters of the first proportional control valve under the pressure segment, and the pressure variable control parameters of the second proportional control valve under the pressure segment.

[0153] Optionally, the proportional valve control and regulation unit includes:

[0154] A first proportional valve control regulating subunit is used to increase the pressure variable control parameter of the first proportional control valve of the gas pressure system if the rise time of the output pressure rising to the preset pressure target value is greater than the preset maximum rise time in the preset rise time judgment stage, and to reduce the pressure variable control parameter of the first proportional control valve if the rise time is less than the preset minimum rise time;

[0155] A second proportional valve control regulating subunit, configured to reduce a pressure variable control parameter of the first proportional control valve if the overshoot amplitude of the output pressure is greater than a preset overshoot amplitude value in a preset overshoot judgment stage;

[0156] A third proportional valve control and regulation subunit is used to increase the pressure variable control parameter of the second proportional control valve of the gas pressure system if the drop time from the output pressure to the preset pressure target value is greater than the preset drop time maximum value in the preset drop time judgment stage, and to reduce the pressure variable control parameter of the second proportional control valve if the drop time is less than the preset drop time minimum value;

[0157] The fourth proportional valve control and regulation subunit is used to increase the pressure variable control parameter of the first proportional control valve if the callback time for the output pressure to callback to the preset pressure target value is greater than the preset callback time maximum value in the preset callback judgment stage; if the callback amplitude of the output pressure exceeds the preset target pressure range, reduce the pressure variable control parameter of the first proportional control valve.

[0158] Optionally, the segmented control unit includes:

[0159] The segmented regulation subunit is used to control the pressure variable control parameter in the first proportional control valve and the second proportional control valve of the gas pressure system by fixing the first control parameter and the second control parameter, and to perform segmented regulation on each pressure segment to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment, and the pressure variable control parameter of the second proportional control valve under the pressure segment.

[0160] Optionally, the segmented control unit includes:

[0161] A multi-gas source segmented control unit is used to perform segmented control on each pressure segment under different gas source pressures in the first proportional control valve and the second proportional control valve of the gas pressure system by controlling the pressure variable control parameters, so as to obtain the pressure variable control parameters of the first proportional control valve under the pressure segment and the pressure variable control parameters of the second proportional control valve under the pressure segment.

[0162] The gas source pressure control device of the gas pressure system provided in the embodiment of the present application can be applied to the gas source pressure control equipment of the gas pressure system, such as terminals: mobile phones, computers, etc. Optionally, Figure 7 The hardware structure block diagram of the gas source pressure control device of the gas pressure system is shown in FIG. Figure 7 , the hardware structure of the gas source pressure control device of the gas pressure system may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4;

[0163] In the embodiment of the present application, the number of the processor 1, the communication interface 2, the memory 3, and the communication bus 4 is at least one, and the processor 1, the communication interface 2, and the memory 3 communicate with each other through the communication bus 4;

[0164] The processor 1 may be a central processing unit CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention, etc.;

[0165] The memory 3 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), etc., such as at least one disk memory;

[0166] The memory stores a program, and the processor can call the program stored in the memory, wherein the program is used to:

[0167] Determining, by an adaptive algorithm, a relationship between a system input and various control parameters in a gas pressure system, wherein the various control parameters include a pressure variable control parameter that has the greatest impact on the gas pressure system;

[0168] Dividing the pressure section to be regulated of the gas pressure system into a plurality of pressure sections;

[0169] In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment;

[0170] After obtaining the full-section control parameters of the pressure section to be regulated, each control parameter of the first proportional control valve and each control parameter of the second proportional control valve are applied to the gas pressure system to complete the gas source pressure control of the gas pressure system.

[0171] Optionally, the detailed functions and extended functions of the program may refer to the above description.

[0172] The embodiment of the present application further provides a storage medium, which may store a program suitable for execution by a processor, wherein the program is used to:

[0173] Determining, by an adaptive algorithm, a relationship between a system input and various control parameters in a gas pressure system, wherein the various control parameters include a pressure variable control parameter that has the greatest impact on the gas pressure system;

[0174] Dividing the pressure section to be regulated of the gas pressure system into a plurality of pressure sections;

[0175] In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment;

[0176] After obtaining the full-section control parameters of the pressure section to be regulated, each control parameter of the first proportional control valve and each control parameter of the second proportional control valve are applied to the gas pressure system to complete the gas source pressure control of the gas pressure system.

[0177] Optionally, the detailed functions and extended functions of the program may refer to the above description.

[0178] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0179] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can refer to each other.

[0180] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling gas source pressure of a gas pressure system, characterized in that: include: Determining, by an adaptive algorithm, a relationship between a system input and various control parameters in a gas pressure system, wherein the various control parameters include a pressure variable control parameter that has the greatest impact on the gas pressure system; Dividing the pressure section to be regulated of the gas pressure system into a plurality of pressure sections; In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment; After obtaining the full-section control parameters of the pressure section to be regulated, each control parameter of the first proportional control valve and each control parameter of the second proportional control valve are applied to the gas pressure system to complete the output pressure control of the gas pressure system.

2. The method according to claim 1, characterized in that The expression of the relationship is: in, Input voltage to the proportional control valve of the gas pressure system, is the output pressure of the gas pressure system, To customize the compensation value, is a constant determined by modeling the gas pressure system, is the first control parameter, is the second control parameter, is the pressure variable control parameter, is the error variable, is the preset pressure value.

3. The method according to claim 1, characterized in that In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment, including: Step S21: for each pressure segment, perform gas control debugging with the median value of the pressure segment, and adjust the pressure variable control parameter of the first proportional control valve of the gas pressure system and the pressure variable control parameter of the second proportional control valve of the gas pressure system; Step S22: for each pressure section, if the pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve are changed before and after regulation, then return to execute step S21 with the currently changed pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve; Step S23: for each pressure section, if the pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve are unchanged before and after the regulation, and the number of consecutive air adjustments of the pressure section under the unchanged pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve does not reach a preset number, then continue to return to the execution of step S21; Step S24: For each pressure segment, if the number of consecutive air debugging of the pressure segment has reached the preset number of times under the unchanged pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve, determine the pressure variable control parameters of the first proportional control valve under the pressure segment, and the pressure variable control parameters of the second proportional control valve under the pressure segment.

4. The method according to claim 3, characterized in that Regulating a pressure variable control parameter of a first proportional control valve of the gas pressure system and a pressure variable control parameter of a second proportional control valve of the gas pressure system, including: In the preset rise time judgment stage, if the rise time for the output pressure to rise to the preset pressure target value is greater than the preset maximum rise time, the pressure variable control parameter of the first proportional control valve of the gas pressure system is increased; if the rise time is less than the preset minimum rise time, the pressure variable control parameter of the first proportional control valve is reduced; In the preset overshoot judgment stage, if the overshoot amplitude of the output pressure is greater than the preset overshoot amplitude value, reducing the pressure variable control parameter of the first proportional control valve; In the preset drop time judgment stage, if the drop time from the output pressure to the preset pressure target value is greater than the preset drop time maximum value, the pressure variable control parameter of the second proportional control valve of the gas pressure system is increased; if the drop time is less than the preset drop time minimum value, the pressure variable control parameter of the second proportional control valve is reduced; In the preset callback judgment stage, if the callback time for the output pressure to callback to the preset pressure target value is greater than the preset callback time maximum value, the pressure variable control parameter of the first proportional control valve is increased; if the callback amplitude of the output pressure exceeds the preset target pressure range, the pressure variable control parameter of the first proportional control valve is reduced.

5. The method according to any one of claims 2 to 4, characterized in that: In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment, including: In the first proportional control valve and the second proportional control valve of the gas pressure system, the pressure variable control parameter is controlled by fixing the first control parameter and the second control parameter, and each pressure segment is regulated in sections to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment, and the pressure variable control parameter of the second proportional control valve under the pressure segment.

6. The method according to any one of claims 1 to 4, characterized in that: In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is regulated in sections by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment, including: In the first proportional control valve and the second proportional control valve of the gas pressure system, each pressure segment is segmented and regulated under different gas sources by controlling the pressure variable control parameters, so as to obtain the pressure variable control parameters of the first proportional control valve under the pressure segment and the pressure variable control parameters of the second proportional control valve under the pressure segment.

7. A gas source pressure control device for a gas pressure system, characterized in that: include: a pressure variable control parameter determination unit, configured to determine, by an adaptive algorithm, a relationship between a system input and various control parameters in a gas pressure system, wherein the various control parameters include a pressure variable control parameter having the greatest impact on the gas pressure system; A pressure segmentation unit, used to divide the pressure segment to be regulated of the gas pressure system into a plurality of pressure segments; A segmented control unit is used to perform segmented control on each pressure segment in the first proportional control valve and the second proportional control valve of the gas pressure system by controlling the pressure variable control parameter to obtain the pressure variable control parameter of the first proportional control valve under the pressure segment and the pressure variable control parameter of the second proportional control valve under the pressure segment; A control parameter application unit is used to apply the various control parameters of the first proportional control valve and the various control parameters of the second proportional control valve to the gas pressure system after obtaining the full-section control parameters of the pressure section to be regulated, so as to complete the gas source pressure control of the gas pressure system.

8. The device according to claim 7, characterized in that The segmented control unit comprises: The proportional valve control and regulation unit is used to execute step S21: for each pressure segment, perform gas control debugging with the median value of the pressure segment, and regulate the pressure variable control parameter of the first proportional control valve of the gas pressure system and the pressure variable control parameter of the second proportional control valve of the gas pressure system; A first continuous regulation unit is used to execute step S22: for each pressure section, if the pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve are changed before and after regulation, then return to the proportional valve control regulation unit with the currently changed pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve; A second continuous control unit is used to execute step S23: for each pressure section, if the pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve are not changed before and after the control, and the number of consecutive air commissioning of the pressure section under the unchanged pressure variable control parameter of the first proportional control valve and the pressure variable control parameter of the second proportional control valve does not reach a preset number, then continue to return to the execution of the proportional valve control control unit; The proportional valve parameter determination unit is used to execute step S24: for each pressure segment, if the number of consecutive air debugging of the pressure segment has reached the preset number of times under the unchanged pressure variable control parameters of the first proportional control valve and the pressure variable control parameters of the second proportional control valve, determine the pressure variable control parameters of the first proportional control valve under the pressure segment, and the pressure variable control parameters of the second proportional control valve under the pressure segment.

9. A gas source pressure control device for a gas pressure system, characterized in that: including memory and processor; The memory is used to store programs; The processor is used to execute the program to implement the various steps of the gas source pressure control method of the gas pressure system as described in any one of claims 1-6.

10. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, each step of the gas source pressure control method of a gas pressure system as described in any one of claims 1 to 6 is implemented.

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