Closed double-tank air spring control method and system

Abstract

The invention provides a closed double-tank air spring control method and system, and relates to the technical field of vehicle suspension control, and the closed double-tank air spring control method comprises the steps that a lifting request of a four-wheel air spring is obtained; according to the lifting request of the four-wheel air spring, the lifting request is judged to enter a single-shaft ascending and descending unit or a lifting instruction waiting unit, and according to the lifting sequence of the air spring, a front shaft and a rear shaft of the four-wheel air spring only allow the request of one shaft at the same time; wherein in the lifting instruction waiting unit, periodic air quantity wheel detection is executed, and corresponding operation is executed after the conditions of dynamic air conveying, external air supplementing and drying agent regeneration are met; in the single-shaft ascending and descending unit, ascending or descending operation of the air spring is executed, and whether the compressor needs to be started or not is judged according to the ascending and descending condition of the height of the air spring; the single-axis ascending or descending can jump to each other when a change is requested.

Description

Technical Field

[0001] The present disclosure relates to the technical field of vehicle suspension control, and in particular to a closed double-tank air spring control method and system. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] With the rapid development of the automotive industry and the continuous improvement of people's living standards, the number of cars on the road is increasing, and vehicle specifications are also increasing. Closed air springs have gradually come into people's attention. The development and advancement of air springs must not only meet the needs of vehicle safety but also meet people's demands for vehicle comfort. Closed air springs offer lower noise, greater environmental adaptability, and higher integration. Optimizing the system structure and control methods of closed air springs has become a key to the development of air spring technology and has attracted widespread attention.

[0004] The existing solution controls conventional closed air springs by inflating and deflating the air springs through a single air tank to achieve the purpose of controlling the height of the four wheels. However, it has the following problems: during the operation of inflating and deflating the conventional closed air springs, the compressor is directly used to work, and the total air volume of the system is cyclically detected. When the total air volume of the system is insufficient, air is sucked from the outside to replenish the system. When the desiccant is not enough to absorb the moisture of the humid air in the system, the desiccant is regenerated by exhausting the air to the outside. This results in the air supply unit of the conventional closed air spring having humid air passing through the compressor during desiccant regeneration, causing the compressor to become damp and reduce its durability. In severe cases, the inside of the compressor will directly rust and be damaged. Summary of the Invention

[0005] In order to solve the above problems, the present disclosure proposes a closed double-tank air spring control method and system, which adopts a closed double-tank air spring to prevent moist gas from passing through the compressor during desiccant regeneration, optimizes the use of the compressor during the lifting process, and turns on the compressor during the dynamic operation of the vehicle to achieve control of the air path, effectively reducing the user's perception of the compressor operating noise.

[0006] According to some embodiments, the present disclosure adopts the following technical solutions:

[0007] A closed double-tank air spring control method, comprising:

[0008] Get the lifting request of the four-wheel spring;

[0009] According to the lifting request of the four-wheel idle spring, the lifting request is judged to enter the single-axis lifting and lowering unit or the waiting lifting instruction unit, and according to the lifting order of the idle spring, only one of the front and rear axles of the four-wheel idle spring is allowed to have a request at the same time;

[0010] Among them, in the waiting lifting instruction unit, periodic gas volume inspection is performed, and corresponding operations are performed after the dynamic air supply, external air supply, and desiccant regeneration conditions are met; in the single-axis lifting and lowering unit, the lifting or lowering operation of the empty spring is performed, and whether the compressor needs to be turned on is determined according to the lifting and lowering of the empty spring height; the single-axis lifting or lowering can jump to each other when the request changes.

[0011] According to some embodiments, the present disclosure adopts the following technical solutions:

[0012] A closed double-tank air spring control system, comprising:

[0013] A signal acquisition module is used to obtain a lifting request for the four-wheel idle springs;

[0014] The control module is used to determine whether the lifting request enters the single-axle lifting and lowering unit or the waiting lifting instruction unit according to the lifting request of the four-wheel idle springs, and according to the lifting order of the idle springs, only one of the front and rear axles of the four-wheel idle springs is allowed to have a request at the same time;

[0015] Among them, in the waiting lifting instruction unit, periodic gas volume inspection is performed, and corresponding operations are performed after the dynamic air supply, external air supply, and desiccant regeneration conditions are met; in the single-axis lifting and lowering unit, the lifting or lowering operation of the empty spring is performed, and whether the compressor needs to be turned on is determined according to the lifting and lowering of the empty spring height; the single-axis lifting or lowering can jump to each other when the request changes.

[0016] According to some embodiments, the present disclosure adopts the following technical solutions:

[0017] A computer program product includes a computer program, and when the computer program is executed by a processor, the closed double-tank air spring control method is implemented.

[0018] According to some embodiments, the present disclosure adopts the following technical solutions:

[0019] A non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by a processor, the closed double-tank air spring control method is implemented.

[0020] According to some embodiments, the present disclosure adopts the following technical solutions:

[0021] An electronic device includes: a processor, a memory and a computer program; wherein the processor is connected to the memory, and the computer program is stored in the memory. When the electronic device is running, the processor executes the computer program stored in the memory to enable the electronic device to implement the closed double-tank air spring control method.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The disclosed closed double-tank air spring control method performs periodic air volume checks in the waiting lifting command unit, and performs corresponding operations after the dynamic air movement, external air supply, and desiccant regeneration conditions are met; in the single-axis lifting and lowering unit, the empty spring is lifted or lowered, and it is determined whether the compressor needs to be turned on based on the lifting and lowering of the empty spring height; the single-axis lifting or lowering can jump to each other when the request changes. The closed double-tank air supply unit is controlled by the above control method, which can reflect the advantages of the closed double-tank air supply unit solution. Compared with the traditional closed air spring, it has better response and execution speed, and avoids the compressor durability problem caused by moist gas passing through the compressor during desiccant regeneration.

[0024] The present invention discloses a closed double-tank air spring control method, which controls the solenoid valve and compressor in the air supply unit to realize the lifting and lowering functions of the entire closed double-tank air spring. The control method in this application optimizes the use of the compressor during the lifting process. The dynamic air movement, single-axis rising and falling and other units have the interruption logic of the compressor overheat protection, and the opening of the compressor is placed during the dynamic operation of the vehicle, which effectively reduces the user's perception of the compressor working noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute a part of the present disclosure, are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation to the present disclosure.

[0026] Figure 1 This is a flowchart of a closed dual-tank air spring control method according to an embodiment of the present disclosure;

[0027] Figure 2 This is a diagram of the equipment connections in the closed dual-tank air spring control method according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] The present disclosure will be further described below with reference to the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present disclosure belongs.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Example 1

[0032] In one embodiment of the present disclosure, a closed dual-tank air spring control method is provided to control the air supply unit of the closed dual-tank air spring, thereby improving response and execution speed and avoiding compressor durability issues caused by moist gas passing through the compressor during desiccant regeneration. The control process includes:

[0033] Step 1: Get the lifting request of the four-wheel spring;

[0034] Step 2: Based on the lifting request of the four-wheel idle spring, determine whether the lifting request enters the single-axle lifting and lowering unit or the waiting lifting instruction unit, and according to the lifting order of the idle spring, only one of the front and rear axles of the four-wheel idle spring is allowed to request at the same time;

[0035] In step 2, the waiting lifting command unit performs periodic gas volume inspections, and performs corresponding operations after the dynamic air supply, external air supply, and desiccant regeneration conditions are met.

[0036] In the single-axis rising and falling unit, the empty spring is raised or lowered, and the need to turn on the compressor and other actions is determined based on the rise and fall of the empty spring height.

[0037] Single axis raising or lowering units can jump to each other when the raising or lowering request changes.

[0038] The dynamic operation, single-axis up and down units have the interruption logic of compressor overheat protection.

[0039] In some embodiments of the present disclosure, due to the requirements of the lifting and lowering sequence of the empty springs, only one of the front and rear axles of the four-wheel empty springs is allowed to request at the same time.

[0040] As an embodiment, the method for waiting for the gas volume inspection of the lifting command unit is as follows: timed triggering or triggering after any actuator action, wherein the actuator action includes dynamic air movement, external air supply, desiccant regeneration and lifting and lowering.

[0041] In some embodiments of the present disclosure, the triggering conditions for dynamic luck are that the vehicle speed signal is valid, the vehicle speed is greater than a certain threshold, and the round-robin signal is valid.

[0042] In some embodiments of the present disclosure, external air replenishment is triggered when a wheel inspection signal is valid and the total amount of air in the high- and low-pressure tanks is below a set threshold. The specific values of the set thresholds are calibrated for different vehicles. The purpose of setting the thresholds is to enable the thresholds for determining insufficient air in the high- and low-pressure tanks to change dynamically with changes in the height of the empty spring.

[0043] In some embodiments of the present disclosure, the desiccant regeneration condition is that the polling signal is valid and the gas volume in the high-pressure tank is higher than a certain threshold, or reaches a threshold of the gas volume that the desiccant can absorb.

[0044] In some embodiments of the present disclosure, the condition for whether a single-axis ascending and descending unit needs to turn on the compressor to inflate is that the height change gradient of the empty spring of a certain axis required to ascend or descend is less than a set threshold.

[0045] In some embodiments of the present disclosure, whether a single-axis ascending and descending unit or a dynamic movement requires temporary air supply from the outside is determined by the pressure change gradient indicated by the pressure sensor being less than a set threshold.

[0046] As an embodiment, the specific control process of a closed double-tank air spring control method is as follows:

[0047] Step 1: According to whether there is a request to rise or fall on the four-wheel spring, determine whether to enter the single-axis rise or fall unit or the waiting for rise or fall instruction unit.

[0048] Among them, due to the requirements of the lifting and lowering sequence of the air springs, only one axle of the front and rear axles of the four-wheel air springs is allowed to request at the same time.

[0049] Entering the single-axis rise or fall unit is determined by the four-wheel spring lift request flag. When the flag is at the corresponding rise or fall value, the software state enters the corresponding single-axis rise or fall unit; when the flag is at the corresponding value of the wait for lift command, the software state enters the wait for lift command unit.

[0050] Step 2: Wait for the lifting command unit to perform periodic gas volume inspections, and perform corresponding operations after the dynamic air supply, external air supply, and desiccant regeneration conditions are met.

[0051] Specifically, the specific implementation process of the gas volume rotation inspection in the waiting lifting command unit is as follows:

[0052] Through the external timer interrupt signal, the gas volume rotation check enable signal is given after the timer interrupt is triggered; or the gas volume rotation check enable signal is given after any actuator action is completed. Any actuator action here includes dynamic air flow, external air supply, desiccant regeneration and rising and falling.

[0053] After receiving the gas volume rotation check enable signal, the high-pressure and low-pressure tank switching valves are opened in sequence at intervals, the pressure sensor signals during the process are stored in the high-pressure and low-pressure tank pressure signals, and a gas volume rotation check valid position signal is provided to indicate that the gas volume of the high-pressure and low-pressure tanks is available at this time. The gas volume rotation check valid position signal will be cleared after a period of time.

[0054] Only when the gas volume rotation valid position signal is available can the dynamic operation, external air supply or desiccant regeneration in the waiting lift command unit be triggered, and dynamic operation, external air supply and desiccant regeneration are mutually exclusive. The priority from high to low is external air supply, desiccant regeneration, and dynamic operation.

[0055] Furthermore, dynamic air delivery is triggered by a valid vehicle speed signal, a speed exceeding a certain threshold, and a high-pressure tank pressure below the threshold corresponding to the current gear position. During dynamic air delivery, the compressor and associated sealing and switching valves are opened. If the pressure gradient indicated by the pressure sensor during air delivery from the low-pressure tank to the high-pressure tank is less than a certain threshold, and the low-pressure tank's air volume is insufficient to deliver air to the high-pressure pipe, the air supply valve is opened to temporarily supply air from the outside until the high-pressure tank pressure rises above the threshold corresponding to the current gear position.

[0056] Similarly, external air supply is triggered by the fact that the gas volume in the high- and low-pressure tanks is below the corresponding threshold for the gear at that time. When external air supply is executed, the compressor and the corresponding switching valve and air supply valve are turned on to supply air from the outside to the high-pressure tank until the gas volume in the high- and low-pressure tanks exceeds the corresponding threshold.

[0057] As an example, the desiccant regeneration condition also includes the high-pressure tank gas volume exceeding a certain threshold, or reaching a threshold for the gas volume that the desiccant can absorb. During desiccant regeneration, the regeneration valve is opened to release air to the outside to regenerate the desiccant, which continues for a certain period of time and then stops.

[0058] Step 3: In the single-axis rising and falling unit, perform the rising or falling operation of the empty spring, and determine whether it is necessary to turn on the compressor or other actions based on the rising and falling conditions of the empty spring height.

[0059] Specifically, the specific implementation of the gas volume rotation inspection in the ascending and descending units is as follows:

[0060] While waiting for the lifting command unit to determine whether to enter the single-axis lifting or lowering unit through the lifting and lowering request of the four-wheel idle spring.

[0061] After entering the lifting unit, the high-pressure gas tank is opened to inflate the air spring by opening the corresponding switching valve. If the height of the air spring reaches the target height at this time, the inflation is stopped and the system returns to the waiting lifting command unit. If the gradient of the air spring height change is less than a certain threshold, that is, the gas volume in the high-pressure gas tank is insufficient to make the air spring reach the target height, the compressor is turned on to inflate the air spring. During the process of turning on the compressor to inflate, if the gradient of the pressure sensor signal change is less than a certain threshold, that is, the gas volume in the high-pressure and low-pressure tanks is insufficient to make the air spring reach the target height, the air supply valve is opened to supply air from the outside. To avoid frequent operation of the compressor, when the four-wheel air spring reaches the target height and the air pressure in the high-pressure tank reaches the corresponding threshold, that is, the gas volume in the high-pressure tank is sufficient for the next ascent, the ascent process ends and the system returns to the waiting lifting command unit.

[0062] After entering the descent unit, the corresponding switching valve is opened to release air from the empty spring to the low-pressure gas tank. If the empty spring reaches the target height at this time, the air release stops and the vehicle returns to the waiting unit for the lifting command. If the height change gradient of the empty spring is less than a certain threshold, that is, the air volume in the low-pressure gas tank is insufficient to bring the empty spring to the target height, the compressor is turned on to inflate the high-pressure tank, reducing the air volume in the low-pressure tank. Similarly, to avoid frequent operation of the compressor, when the four-wheel empty spring reaches the target height and the air pressure in the low-pressure tank reaches the corresponding threshold, that is, the air volume in the low-pressure tank is sufficient for the next descent, the descent process ends and the vehicle returns to the waiting unit for the lifting command.

[0063] As an embodiment, a single-axis ascending or descending unit can jump to each other when the ascending or descending request changes.

[0064] Specifically, the single-axis ascending / descending unit can jump from the ascending unit to the descending unit, or vice versa, when an ascending request changes to a descending request, or vice versa. Meanwhile, while waiting for the ascending / descending instruction, any action will be interrupted by the ascending / descending request signal. This means that the single-axis ascending / descending unit has the highest execution priority in this control method.

[0065] As an embodiment, the dynamic luck, single-axis up and down units have the interruption logic of compressor overheat protection.

[0066] Specifically, during dynamic operation, ramp-up, ramp-down, and other unit compressor operations, if the compressor's operating time meets the temperature or time policy for overheat protection, the scene will be retained and an interrupt will be initiated, suspending the process to stop the compressor. Once the overheat protection resumption conditions are met, the scene will be restored to continue the previous operation, such as dynamic operation.

[0067] Example 2

[0068] In one embodiment of the present disclosure, a closed dual-tank air spring control system is provided, comprising:

[0069] A signal acquisition module is used to obtain a lifting request for the four-wheel idle springs;

[0070] The control module is used to determine whether the lifting request enters the single-axle lifting and lowering unit or the waiting lifting instruction unit according to the lifting request of the four-wheel idle springs, and according to the lifting order of the idle springs, only one of the front and rear axles of the four-wheel idle springs is allowed to have a request at the same time;

[0071] Among them, in the waiting lifting instruction unit, periodic gas volume inspection is performed, and corresponding operations are performed after the dynamic air supply, external air supply, and desiccant regeneration conditions are met; in the single-axis lifting and lowering unit, the lifting or lowering operation of the empty spring is performed, and whether the compressor needs to be turned on is determined according to the lifting and lowering of the empty spring height; the single-axis lifting or lowering can jump to each other when the request changes.

[0072] As an embodiment, the control module includes a controller, an air supply unit, and an air spring. The controller controls the solenoid valve and compressor in the air supply unit based on the closed dual-tank air spring control method described in Example 1 to achieve functions such as raising and lowering the entire closed dual-tank air spring.

[0073] The air supply unit is mainly integrated with high and low pressure gas tanks, compressors, solenoid valves and one-way valves. Through the method described in Example 1 and the control of the compressor and solenoid valve, the air supply unit can complete actions such as filling and deflation of the air spring.

[0074] Air springs are used to adjust the height of the vehicle.

[0075] As an embodiment, a closed dual-tank air supply unit is controlled to improve response and execution speed, and to avoid compressor durability issues caused by moist gas passing through the compressor during desiccant regeneration. The control process includes:

[0076] Step 1: Get the lifting request of the four-wheel spring;

[0077] Step 2: Based on the lifting request of the four-wheel idle spring, determine whether the lifting request enters the single-axle lifting and lowering unit or the waiting lifting instruction unit, and according to the lifting order of the idle spring, only one of the front and rear axles of the four-wheel idle spring is allowed to request at the same time;

[0078] In step 2, the waiting lifting command unit performs periodic gas volume inspections, and performs corresponding operations after the dynamic air supply, external air supply, and desiccant regeneration conditions are met.

[0079] In the single-axis rising and falling unit, the empty spring is raised or lowered, and the need to turn on the compressor and other actions is determined based on the rise and fall of the empty spring height.

[0080] Single axis raising or lowering units can jump to each other when the raising or lowering request changes.

[0081] The dynamic operation, single-axis up and down units have the interruption logic of compressor overheat protection.

[0082] In some embodiments of the present disclosure, due to the requirements of the lifting and lowering sequence of the empty springs, only one of the front and rear axles of the four-wheel empty springs is allowed to request at the same time.

[0083] Example 3

[0084] In one embodiment of the present disclosure, a computer program product is provided, including a computer program, which implements the closed dual-tank air spring control method when executed by a processor.

[0085] Example 4

[0086] In one embodiment of the present disclosure, a non-transitory computer-readable storage medium is provided, wherein the non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by a processor, the closed dual-tank air spring control method is implemented.

[0087] Example 5

[0088] In one embodiment of the present disclosure, an electronic device is provided, comprising: a processor, a memory, and a computer program; wherein the processor is connected to the memory, and the computer program is stored in the memory. When the electronic device is running, the processor executes the computer program stored in the memory, so that the electronic device executes the closed double-tank air spring control method.

[0089] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0090] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1A step that specifies a function in one or more boxes.

[0091] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Those skilled in the art should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A closed double-tank air spring control method, characterized in that: include: Get the lifting request of the four-wheel spring; According to the lifting request of the four-wheel idle spring, the lifting request is judged to enter the single-axis lifting and lowering unit or the waiting lifting instruction unit, and according to the lifting order of the idle spring, only one of the front and rear axles of the four-wheel idle spring is allowed to have a request at the same time; Among them, in the waiting lifting instruction unit, periodic gas volume inspection is performed, and corresponding operations are performed after the dynamic air supply, external air supply, and desiccant regeneration conditions are met; in the single-axis lifting and lowering unit, the lifting or lowering operation of the empty spring is performed, and whether the compressor needs to be turned on is determined according to the lifting and lowering of the empty spring height; the single-axis lifting or lowering can jump to each other when the request changes.

2. A closed double-tank air spring control method according to claim 1, characterized in that: According to the lifting request of the four-wheel empty spring, the lifting request is judged to enter the single-axis lifting and lowering unit or the waiting lifting instruction unit, including: entering the single-axis lifting or lowering unit through the four-wheel empty spring lifting request flag judgment, when the flag position is at the corresponding value of lifting or lowering, entering the corresponding single-axis lifting or lowering unit; when the flag position is waiting for the lifting instruction corresponding value, the software state enters the waiting lifting instruction unit.

3. A closed double-tank air spring control method as claimed in claim 1, characterized in that: In the waiting lifting command unit, periodic gas volume inspection is performed, including: through the external timer interrupt, the gas volume inspection enable signal is given after the timer interrupt is triggered; or the gas volume inspection enable signal is given after any actuator action is completed. Any actuator action here includes dynamic air movement, external air supply, desiccant regeneration and lifting and lowering.

4. A closed double-tank air spring control method as claimed in claim 3, characterized in that: After receiving the gas volume rotation check enable signal, the high and low pressure tank switching valves are opened in sequence at intervals, and the pressure sensor signals in the process are stored in the high and low pressure tank pressure signals, and a gas volume rotation check valid position signal is provided to indicate that the gas volume of the high and low pressure tanks is available at this time. The gas volume rotation check valid position signal will be cleared after a period of time; when the gas volume rotation check valid position signal is available, the dynamic air supply, external air supply or desiccant regeneration in the waiting lifting instruction unit is triggered, and dynamic air supply, external air supply and desiccant regeneration are mutually exclusive, and the priority from high to low is external air supply, desiccant regeneration, and dynamic air supply.

5. A closed double-tank air spring control method as claimed in claim 1, characterized in that: The triggering conditions for dynamic air supply also include that the vehicle speed signal is valid, the vehicle speed is greater than a certain threshold, and the high-pressure tank pressure is lower than the threshold corresponding to the gear at this time. When dynamic air supply is executed, the compressor and the corresponding sealing valve and switching valve are opened. In the process of air supply from the low-pressure tank to the high-pressure tank, if the pressure change gradient shown by the pressure sensor is less than the set threshold and the gas volume in the low-pressure tank cannot meet the demand for air supply to the high-pressure pipe, the air supply valve is opened to temporarily supply air from the outside until the high-pressure tank pressure is higher than the threshold corresponding to the gear at this time.

6. A closed double-tank air spring control method as claimed in claim 1, characterized in that: The triggering conditions for external air supply also include the gas volume in the high and low pressure tanks and the gas volume being lower than the corresponding threshold of the gear at this time. When external air supply is executed, the compressor and the corresponding switching valve and air supply valve are turned on to supply air from the outside to the high pressure tank until the gas volume in the high and low pressure tanks is higher than the corresponding threshold.

7. A closed double-tank air spring control system, characterized in that: include: A signal acquisition module is used to obtain a lifting request for the four-wheel idle springs; The control module is used to determine whether the lifting request enters the single-axle lifting and lowering unit or the waiting lifting instruction unit according to the lifting request of the four-wheel idle springs, and according to the lifting order of the idle springs, only one of the front and rear axles of the four-wheel idle springs is allowed to have a request at the same time; Among them, in the waiting lifting instruction unit, periodic gas volume inspection is performed, and corresponding operations are performed after the dynamic air supply, external air supply, and desiccant regeneration conditions are met; in the single-axis lifting and lowering unit, the lifting or lowering operation of the empty spring is performed, and whether the compressor needs to be turned on is determined according to the lifting and lowering of the empty spring height; the single-axis lifting or lowering can jump to each other when the request changes.

8. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, a closed double-tank air spring control method according to any one of claims 1 to 6 is implemented.

9. A non-transitory computer-readable storage medium, characterized in that The non-transitory computer-readable storage medium is used to store computer instructions. When the computer instructions are executed by the processor, a closed double-tank air spring control method as described in any one of claims 1 to 6 is implemented.

10. An electronic device, characterized in that: include: A processor, a memory and a computer program; wherein the processor is connected to the memory, the computer program is stored in the memory, and when the electronic device is running, the processor executes the computer program stored in the memory to enable the electronic device to implement a closed double-tank air spring control method as described in any one of claims 1-6.

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