Automatic adjusting control system and device for air spring

Abstract

The invention provides an automatic adjustment control system and device for an air spring, and the system comprises a pneumatic control module which is used for controlling the inflation and deflation of an air bag in the air spring; the power module is used for supplying power to the system; the data acquisition module is used for acquiring state information of the air spring and sending the state information to the main control module; the bus driving module is used for receiving a user instruction and sending the user instruction to the main control module; and the main control module is used for reaching a target pressure value or a target height value according to a user instruction, a set PID parameter and data acquired in real time. By integrating height adjustment, pressure adjustment and parameter calibration of the air spring, the provided air spring with the automatic pressure adjustment function can be widely applied to various scenes needing air spring control, the control precision is improved, and double precise adjustment of the height and the pressure is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of air spring control, and in particular to an automatic adjustment control system and device for an air spring. Background Art

[0002] In air spring systems, a distinction can be made between adjustable and non-adjustable spring systems. An adjustable air spring system usually has a variable gas mass, preferably an air mass, of the air spring, while the gas mass of the air spring is fixed in a non-adjustable air spring system. Non-adjustable air springs can be used primarily for the above-mentioned purposes, while adjustable air springs can achieve extended functions, but for adjustable air springs, the control device must send multiple instructions in order to control the actuator. In addition, the control device must have a fast reaction time in order to generate corresponding control signals from multiple measured values, because the elastic characteristics of the air spring are nonlinear, and the actual pressure in the airbag is directly affected by the load weight, especially in a dynamic environment. The pressure fluctuations are very drastic, and precise pressure control is required to ensure the stability of the load of the air spring. Therefore, the control device of the air spring control system requires highly complex research and development work and requires high computing power. In particular, in the event of a control device failure, the entire air spring system stops operating.

[0003] In the prior art, most air spring application control systems are customized according to specific application scenarios, which results in repeated research and implementation of the air spring inflation and deflation control schemes and algorithms, increasing R&D costs and time. In addition, it is difficult for non-professionals to effectively operate and maintain these complex control systems. Especially when faced with complex application scenarios with multiple air spring combinations, or application scenarios with high pressure accuracy requirements for air springs, the matching design of the pneumatic control system and the electronic control system will waste a lot of labor costs and equipment costs. Summary of the invention

[0004] The present application is made in view of the above-mentioned problems, and its purpose is to provide an automatic adjustment control system and device for an air spring. By integrating the height adjustment, pressure adjustment and parameter calibration of the air spring, the air spring with automatic pressure adjustment function can be widely used in a variety of scenarios that require air spring control, reducing the research and development cost and time in different application scenarios. Users do not need to have professional knowledge of air spring control algorithms, but can achieve precise control of the air spring through simple parameter settings. Through the high-frequency and small inflation and exhaust volume control method, according to PID control and action curve library, the stability of the air spring under load is ensured and vibration is avoided, the control accuracy is improved, and the dual precise adjustment of height and pressure is achieved.

[0005] Specifically, the first aspect of the present application provides an automatic adjustment control system for an air spring, comprising:

[0006] A pneumatic control module, used to control the inflation and deflation of the airbag in the air spring, and electrically connected to the main control module;

[0007] A power module, used to supply power to the system and electrically connected to the main control module;

[0008] A data acquisition module, used to collect status information of the air spring and send it to the main control module;

[0009] The bus driver module includes a CAN bus, which is used to receive user commands and send them to the main control module;

[0010] The main control module is used to calculate the maximum load and working pressure of the spring according to the user's instructions, the set PID parameters and the real-time collected data, and adjust the pneumatic control module according to the PID control in combination with the action curve library to achieve the target pressure value or target height value. The calculation formula is as follows:

[0011] Maximum load calculation:

[0012] F max =K*P max *A;

[0013] Working pressure calculation:

[0014] P w =F w / (K*A);

[0015] Among them: F max is the maximum load of the air spring;

[0016] K is the safety factor of the air spring;

[0017] P max is the maximum effective pressure of the air bag of the air spring;

[0018] A is the effective pressure-bearing area of ​​the airbag of the air spring;

[0019] P w is the current working pressure of the air spring;

[0020] F w is the current workload.

[0021] The system monitors the working pressure P of the air spring w , the pressure in the airbag is adjusted to not exceed P through the automatic pressure regulation function max It can increase the service life of the air spring and avoid the risk of explosion, and can effectively protect the safety of the air spring and the objects carried by the air spring.

[0022] Furthermore, the state information of the air spring includes the pressure value in the airbag and the height of the air spring.

[0023] Furthermore, the user instructions include selecting a working mode, setting a target altitude value or a target pressure value, and a charging and discharging cycle time.

[0024] Furthermore, the working modes include parameter calibration mode, pressure adjustment mode and height adjustment mode.

[0025] The parameter calibration mode is used to adjust the preset PID parameters. The difference between the pressure regulation mode and the altitude regulation mode is whether pressure or altitude is used as the target of PID regulation control.

[0026] Furthermore, the action curve library includes a curve showing a change in the height of the air spring with the working load when the working pressure remains unchanged, a curve showing a change in the height of the air spring with the working pressure when the working load remains unchanged, a curve showing a change in the looseness of the load, and a curve showing a change in the air spring leakage.

[0027] Further, the maximum load and working pressure of the spring are calculated according to the user instructions, the set PID parameters and the real-time collected data, and the pneumatic control module is adjusted according to the PID control in combination with the action curve library to achieve the target pressure value or the target height value, specifically including:

[0028] Pressure regulation mode: The main control unit adjusts the duty cycle of the high-speed switch valve through PID control based on the target pressure value set by the user, the charging and discharging cycle time and the real-time pressure data collected, using the difference between the real-time pressure and the target pressure, and accurately controls the output in combination with the corresponding curve of the action curve library to control the air spring to reach the target pressure value within the set charging and discharging cycle;

[0029] Height adjustment mode: The main control unit adjusts the duty cycle of the high-speed switch valve through PID control based on the target height value set by the user, the inflation and deflation cycle time and the real-time height data collected, and uses the difference between the real-time height and the target height to smoothly control the height change in combination with the corresponding curve of the action curve library, and controls the air spring to reach the target height value within the set inflation and deflation cycle.

[0030] A second aspect of the present application provides an automatic adjustment control device for an air spring, comprising:

[0031] The main control module includes MCU and control components, which are used to receive data, perform logical operations and control the device;

[0032] High-pressure hoses, used to connect air springs to electrical control components;

[0033] The high-pressure hose can effectively eliminate the impact of air spring vibration on electrical control components and is convenient and flexible to install.

[0034] Pneumatic high-pressure plate valve group, including a variety of pneumatic valves and connecting air circuits, seals, etc., is used to limit the maximum flow and pressure of air in and out of the air spring, and control the working flow and pressure of air in and out of the air spring in stages;

[0035] The pneumatic high-pressure plate valve group realizes the functions of regulating, intercepting and diverting high-pressure air through the combination of pneumatic valves, connecting air circuits and seals, thereby improving the reliability of pneumatic components and reducing volume and weight.

[0036] Height sensor, used to collect the height of the air spring and send it to the main control unit in the form of a 4mA-20mA standard electrical signal to monitor the height of the air spring in real time;

[0037] The pressure sensor is used to collect the pressure of the air spring charging and discharging interface and send it to the main control unit in the form of a 4mA-20mA standard electrical signal to monitor the internal pressure of the air spring in real time;

[0038] A power supply for supplying power to the device;

[0039] External high-pressure gas source, used to regulate the pressure inside the airbag.

[0040] Furthermore, the MCU and control components specifically include: a microcontroller unit MCU, a high-efficiency power management unit, a high-speed CAN transceiver unit, an analog input signal processing unit, and a high-speed switch valve output drive unit.

[0041] The microcontroller unit MCU is the logic operation storage control center of the system; the high-efficiency power management unit is used for power supply management of the main control module; the high-speed CAN transceiver unit is used to provide a CAN bus port for the user. The user can send control instructions to the air spring through this port; the analog input signal processing unit is used for input signal processing; the high-speed switch valve output drive unit is used for output drive.

[0042] Furthermore, the multiple pneumatic valves specifically include: a system flow limiting valve, an inflation high-speed switching valve, a pressure relief high-speed switching valve, and an anti-leakage one-way valve.

[0043] The system flow limiting valve is used to limit the maximum flow and pressure of air in and out of the air spring in stages to adapt to air springs with different parameters or different application environment requirements of air springs; the inflation high-speed switching valve is used for rapid inflation; the pressure relief high-speed switching valve is used for rapid exhaust; the anti-leakage check valve is an air intake check valve of the valve group to ensure that there is no leakage inside the valve body or other valve cores, and that the air spring will not release pressure when the pressure is greater than the air source.

[0044] Furthermore, the maximum effective opening and closing time of the valve cores of the inflation high-speed switching valve and the pressure relief high-speed switching valve are both within 10ms.

[0045] In the second aspect, the present application also provides a computing device, which has the function of implementing the method described in the first aspect above. The beneficial effects can be found in the description of the first aspect, which will not be repeated here. The function can be implemented by hardware, or by executing the corresponding software implementation through hardware. The hardware or software includes one or more modules corresponding to the above functions. In one possible design, the structure of the device includes an acquisition module, a training module, and optionally, a construction module. These modules can implement the function of the training node in the method example of the first aspect above. Please refer to the detailed description in the method example for details, which will not be repeated here.

[0046] In the third aspect, the present application also provides a computing device, which is used to implement the functions of the method described in the first aspect above. The beneficial effects can be found in the description of the first aspect and will not be repeated here. The structure of the computing device includes a processor and a memory, and the memory is used to store instructions and / or data. The memory is coupled to the processor, and when the processor executes the program instructions stored in the memory, the function of the training node in the example of the first aspect above can be implemented. The structure of the computing device also includes a communication interface for communicating with other devices.

[0047] In a fourth aspect, the present application also provides a computer-readable storage medium, in which instructions are stored, and when the computer-readable storage medium is run on a computer, the computer executes the method in the above-mentioned first aspect and various possible designs of the first aspect.

[0048] In a fifth aspect, the present application also provides a computer program product comprising instructions, which, when executed on a computer, enables the computer to execute the method in the above-mentioned first aspect and various possible designs of the first aspect.

[0049] In a sixth aspect, the present application also provides a computing chip, which is connected to a memory, and the chip is used to read and execute a software program stored in the memory, and to execute the methods in the above-mentioned first aspect and various possible implementation methods of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the embodiments of the present drawings or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present drawings. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0051] Figure 1 It is a structural block diagram of an automatic adjustment control system of an air spring;

[0052] Figure 2 The present invention is a structural diagram of an automatic adjustment control device for an air spring;

[0053] Figure 3 It is the specific structure diagram of MCU and control components;

[0054] In the figure: 1. Air spring; 2. High-pressure hose; 3. Pneumatic high-pressure plate valve group; 4. Pressure sensor; 5. System flow limiting valve; 6. Pressure relief high-speed switching valve; 7. Inflation high-speed switching valve; 8. Anti-leakage check valve; 9. Air filter; 10. External high-pressure air source.

[0055] The purpose, features and advantages of this figure will be further described in conjunction with the embodiments with reference to the accompanying drawings. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is described and illustrated below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application. Based on the embodiments provided in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0057] Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, the present application can also be applied to other similar scenarios based on these drawings without creative work. In addition, it can also be understood that although the efforts made in this development process may be complicated and lengthy, for ordinary technicians in this field related to the content disclosed in this application, some changes in design, manufacturing or production based on the technical content disclosed in this application are just conventional technical means, and should not be understood as insufficient content disclosed in this application.

[0058] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0059] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0060] If there is no special explanation, all steps of the present application can be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), which means that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), which means that step (c) may be added to the method in any order. For example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0061] If there is no special explanation, the "include" and "comprising" mentioned in this application are open-ended or closed-ended. For example, the "include" and "comprising" may mean that other components not listed may also be included or only the listed components may be included or only the listed components may be included.

[0062] If not specifically stated, in this application, the term "or" is inclusive. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, any of the following conditions satisfies the condition "A or B": A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0063] In order to better understand the solutions of the embodiments of the present application, some relevant terms and concepts that may be involved in the embodiments of the present application are first introduced below.

[0064] (1) Air springs are non-metallic springs that use compressed air to generate elastic support force. They are widely used in the automotive, machinery, aviation, and medical fields. Their working principle is to achieve elasticity through the compressibility of air in a closed container. When the air bag is filled with compressed air, it can provide controllable support force. Air springs are mainly divided into two types: bladder type and membrane type. In addition, there are other structural forms such as composite type and oil-gas type.

[0065] (2) CAN bus (Controller Area Network) is a serial, asynchronous half-duplex communication protocol widely used in the automotive and industrial fields. Its working principle is based on broadcasting. When a node sends data, it broadcasts it to all nodes in the network in the form of a message. This broadcast mechanism enables each node to receive and process the data regardless of whether the data is sent to itself. The CAN bus uses differential signal transmission to improve anti-interference ability and data transmission reliability. Its communication medium can be twisted pair, coaxial cable or optical fiber, which is flexible to choose. In harsh environments, the CAN bus can still work stably. Even if one of the twisted pair cables is broken, the system can still operate normally.

[0066] (3) PID control, whose full name is proportional-integral-derivative control, is a classic control algorithm widely used in industrial automation and control systems. The PID controller adjusts the system error through a linear combination of three links: proportional (P), integral (I) and derivative (D), thereby achieving precise control of the controlled object. The PID control algorithm is based on negative feedback control theory. It continuously measures the error between the actual output and the expected output of the system, and adjusts the controller output according to the size of the error to achieve the desired control effect.

[0067] In this embodiment, Figure 1 As shown, an automatic adjustment control system of an air spring comprises:

[0068] A pneumatic control module, used to control the inflation and deflation of the airbag in the air spring, and electrically connected to the main control module;

[0069] A power module, used to supply power to the system and electrically connected to the main control module;

[0070] A data acquisition module, used to collect status information of the air spring and send it to the main control module;

[0071] The bus driver module includes a CAN bus, which is used to receive user commands and send them to the main control module;

[0072] The main control module is used to calculate the maximum load and working pressure of the spring according to the user's instructions, the set PID parameters and the real-time collected data, and adjust the pneumatic control module according to the PID control in combination with the action curve library to achieve the target pressure value or target height value. The calculation formula is as follows:

[0073] Maximum load calculation:

[0074] F max =K*P max *A;

[0075] Working pressure calculation:

[0076] P w =F w / (K*A);

[0077] The system monitors the working pressure P of the air spring w , the pressure in the airbag is adjusted to not exceed P through the automatic pressure regulation function max It can increase the service life of the air spring and avoid the risk of explosion, and can effectively protect the safety of the air spring and the objects carried by the air spring.

[0078] Furthermore, the status information of the air spring includes the pressure value in the airbag and the height of the air spring.

[0079] Furthermore, the user instructions include selecting a working mode, setting a target altitude value or a target pressure value, and a charging and discharging cycle time.

[0080] Furthermore, the working modes include parameter calibration mode, pressure adjustment mode and altitude adjustment mode.

[0081] The parameter calibration mode is used to adjust the preset PID parameters. The difference between the pressure regulation mode and the altitude regulation mode is whether pressure or altitude is used as the target of PID regulation control.

[0082] Furthermore, the action curve library includes a curve of the height of the air spring changing with the working load when the working pressure remains unchanged, a curve of the height of the air spring changing with the working pressure when the working load remains unchanged, a curve of the looseness of the load and a curve of the air spring leakage.

[0083] Furthermore, according to the user instructions, the set PID parameters and the real-time collected data, the maximum load and working pressure of the spring are calculated, and the pneumatic control module is adjusted according to the PID control in combination with the action curve library to achieve the target pressure value or target height value, specifically including:

[0084] Pressure regulation mode: The main control unit adjusts the duty cycle of the high-speed switch valve through PID control based on the target pressure value set by the user, the charging and discharging cycle time and the real-time pressure data collected, using the difference between the real-time pressure and the target pressure, and accurately controls the output in combination with the corresponding curve of the action curve library to control the air spring to reach the target pressure value within the set charging and discharging cycle;

[0085] Height adjustment mode: The main control unit adjusts the duty cycle of the high-speed switch valve through PID control based on the target height value set by the user, the inflation and deflation cycle time and the real-time height data collected, and uses the difference between the real-time height and the target height to smoothly control the height change in combination with the corresponding curve of the action curve library, and controls the air spring to reach the target height value within the set inflation and deflation cycle.

[0086] In this embodiment, Figure 2-Figure 3 As shown, the second aspect of the present application provides an automatic adjustment control device for an air spring, comprising:

[0087] The main control module includes MCU and control components, which are used to receive data, perform logical operations and control the device;

[0088] High-pressure hoses, used to connect air springs to electrical control components;

[0089] The high-pressure hose can effectively eliminate the impact of air spring vibration on electrical control components and is convenient and flexible to install.

[0090] Pneumatic high-pressure plate valve group, including a variety of pneumatic valves and connecting air circuits, seals, etc., is used to limit the maximum flow and pressure of air in and out of the air spring, and control the working flow and pressure of air in and out of the air spring in stages;

[0091] The pneumatic high-pressure plate valve group realizes the functions of regulating, intercepting and diverting high-pressure air through the combination of pneumatic valves, connecting air circuits and seals, thereby improving the reliability of pneumatic components and reducing volume and weight.

[0092] Height sensor, used to collect the height of the air spring and send it to the main control unit in the form of a 4mA-20mA standard electrical signal to monitor the height of the air spring in real time;

[0093] The pressure sensor is used to collect the pressure of the air spring charging and discharging interface and send it to the main control unit in the form of a 4mA-20mA standard electrical signal to monitor the internal pressure of the air spring in real time;

[0094] Figure 2 Taking the pressure adjustment mode as an example, in the height adjustment mode Figure 2 The pressure sensor in the figure can be replaced by a height sensor. The air filter in the figure is used to filter the external high-pressure air source to maintain the cleanliness of the gas in the air spring.

[0095] A power supply for supplying power to the device;

[0096] External high-pressure gas source, used to regulate the pressure inside the airbag.

[0097] Furthermore, if Figure 3 As shown, the MCU and control components specifically include: a microcontroller unit MCU, a high-efficiency power management unit, a high-speed CAN transceiver unit, an analog input signal processing unit, and a high-speed switch valve output drive unit.

[0098] The microcontroller unit MCU is the logic operation storage control center of the system; the high-efficiency power management unit is used for power supply management of the main control module; the high-speed CAN transceiver unit is used to provide a CAN bus port for the user. The user can send control instructions to the air spring through this port; the analog input signal processing unit is used for input signal processing; the high-speed switch valve output drive unit is used for output drive. In this embodiment, the MCU used is STM32F103VBT6, a 32-bit medium-density high-performance microcontroller unit as the control center; the main component of the high-efficiency power management unit is TPS5430DDAR; the main component of the high-speed CAN transceiver unit is TJA1050T / CM; the analog input 1 signal processing unit is used to process the signal of the pressure sensor; the analog input 2 signal processing unit is used to process the signal of the height sensor; the high-speed switch valve 1 output drive unit is used to control the outlet valve; the high-speed switch valve 2 output drive unit is used to control the exhaust valve.

[0099] Furthermore, the various pneumatic valves specifically include: a system flow limiting valve, an inflation high-speed switching valve, a pressure relief high-speed switching valve, and an anti-leakage one-way valve.

[0100] The system flow limiting valve is used to limit the maximum flow and pressure of air in and out of the air spring in stages to adapt to air springs with different parameters or different application environment requirements of air springs; the inflation high-speed switching valve is used for rapid inflation; the pressure relief high-speed switching valve is used for rapid exhaust; the anti-leakage check valve is an air intake check valve of the valve group to ensure that there is no leakage inside the valve body or other valve cores, and that the air spring will not release pressure when the pressure is greater than the air source.

[0101] Furthermore, the maximum effective opening and closing times of the valve cores of the inflation high-speed on-off valve and the pressure relief high-speed on-off valve are both within 10ms.

[0102] It should be noted that the present application is not limited to the above-mentioned embodiments. The above-mentioned embodiments are only examples, and the embodiments having the same structure as the technical idea and exerting the same effect within the scope of the technical solution of the present application are all included in the technical scope of the present application. In addition, without departing from the scope of the main purpose of the present application, various modifications that can be thought of by those skilled in the art to the embodiments and other methods of combining some of the constituent elements in the embodiments are also included in the scope of the present application.

Claims

1. An automatic adjustment control system for an air spring, It is characterized in that include: A pneumatic control module, used to control the inflation and deflation of the airbag in the air spring, and electrically connected to the main control module; A power module, used to supply power to the system and electrically connected to the main control module; A data acquisition module, used to collect status information of the air spring and send it to the main control module; The bus driver module includes a CAN bus, which is used to receive user commands and send them to the main control module; The main control module is used to calculate the maximum load and working pressure of the spring according to the user's instructions, the set PID parameters and the real-time collected data, and adjust the pneumatic control module according to the PID control in combination with the action curve library to achieve the target pressure value or target height value. The calculation formula is as follows: Maximum load calculation: Fmax=K*Pmax*A; Working pressure calculation: Pw=Fw / (K*A); Where: Fmax is the maximum load of the air spring; K is the safety factor of the air spring; Pmax is the maximum effective pressure of the airbag of the air spring; A is the effective pressure-bearing area of ​​the airbag of the air spring; Pw is the current working pressure of the air spring; Fw is the current workload.

2. An automatic adjustment control system for an air spring according to claim 1, It is characterized in that The state information of the air spring includes the pressure value in the airbag and the height of the air spring.

3. The automatic adjustment control system of an air spring according to claim 1, It is characterized in that The user instructions include selecting a working mode, setting a target altitude value or a target pressure value, and a charging and discharging cycle time.

4. The automatic adjustment control system of an air spring according to claim 3, It is characterized in that The working modes include a parameter calibration mode, a pressure adjustment mode and a height adjustment mode.

5. The automatic adjustment control system of an air spring according to claim 1, It is characterized in that The action curve library includes a curve of the change of the height of the air spring with the working load when the working pressure is constant, a curve of the change of the height of the air spring with the working pressure when the working load is constant, a curve of the change of the loose load and a curve of the change of the air spring leakage.

6. The automatic adjustment control system of an air spring according to claim 1, It is characterized in that The method calculates the maximum load and working pressure of the spring according to the user instructions, the set PID parameters and the real-time collected data, and adjusts the pneumatic control module according to the PID control in combination with the action curve library to achieve the target pressure value or the target height value, specifically including: Pressure regulation mode: The main control unit adjusts the duty cycle of the high-speed switch valve through PID control based on the target pressure value set by the user, the charging and discharging cycle time and the real-time pressure data collected, using the difference between the real-time pressure and the target pressure, and accurately controls the output in combination with the corresponding curve of the action curve library to control the air spring to reach the target pressure value within the set charging and discharging cycle; Height adjustment mode: The main control unit adjusts the duty cycle of the high-speed switch valve through PID control based on the target height value set by the user, the inflation and deflation cycle time and the real-time height data collected, and uses the difference between the real-time height and the target height to smoothly control the height change in combination with the corresponding curve of the action curve library, and controls the air spring to reach the target height value within the set inflation and deflation cycle.

7. An automatic adjustment control device for an air spring, It is characterized in that include: The main control module includes MCU and control components, which are used to receive data, perform logical operations and control the device; High-pressure hoses, used to connect air springs to electrical control components; Pneumatic high-pressure plate valve group, including a variety of pneumatic valves and connecting air circuits, seals, etc., is used to limit the maximum flow and pressure of air in and out of the air spring, and control the working flow and pressure of air in and out of the air spring in stages; Height sensor, used to collect the height of the air spring and send it to the main control unit in the form of a 4mA-20mA standard electrical signal to monitor the height of the air spring in real time; The pressure sensor is used to collect the pressure of the air spring charging and discharging interface and send it to the main control unit in the form of a 4mA-20mA standard electrical signal to monitor the internal pressure of the air spring in real time; A power supply for supplying power to the device; External high-pressure gas source, used to regulate the pressure inside the airbag.

8. The automatic adjustment control device for an air spring according to claim 7, It is characterized in that The MCU and control components specifically include: a microcontroller unit MCU, a high-efficiency power management unit, a high-speed CAN transceiver unit, an analog input signal processing unit, and a high-speed switch valve output drive unit.

9. The automatic adjustment control device for an air spring according to claim 7, It is characterized in that The various pneumatic valves specifically include: a system flow limiting valve, an inflation high-speed switching valve, a pressure relief high-speed switching valve, and an anti-leakage one-way valve.

10. The automatic adjustment control device for an air spring according to claim 9, It is characterized in that The maximum effective opening and closing time of the valve cores of the inflation high-speed on-off valve and the pressure relief high-speed on-off valve are both within 10ms.

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