Air spring assembly testing system and method

Abstract

The application discloses an air spring assembly test system and method. The system comprises a loading system, a simulation system, a power supply system and an air supply and exhaust system. The loading system is connected with the simulation system and the air supply and exhaust system. The simulation system is connected with the air supply and exhaust system. The power supply system is connected with the loading system, the simulation system and the air supply and exhaust system. The loading system is used for simulating an air spring assembly test environment. The simulation system is used for sending a first driving signal to the loading system and a second driving signal to the air supply and exhaust system, so as to drive the loading system and the air supply and exhaust system to control the air spring assembly in the loading system to adjust a vehicle weight mass assembly for simulating vehicle weight in the loading system to different target heights. Different target time lengths required for adjusting the vehicle weight mass assembly to different target heights are obtained, so as to complete the test of the air spring assembly.

Description

Technical Field

[0001] This application relates to the field of testing, and more specifically, to a testing system and method for an air spring assembly. Background Technology

[0002] To meet the ever-increasing demands for improved driving experience and autonomous driving, vehicle intelligent suspension is evolving from semi-active suspension to active suspension with high response bandwidth. Among these, active dampers and air spring assemblies, as core components of active suspension, have become a research hotspot. During the development of active dampers and air spring assemblies, it is necessary to bench verify their core performance indicators; however, currently, relevant testing methods are lacking. Summary of the Invention

[0003] This application provides an air spring assembly testing system and method to at least solve the technical problem of the lack of testing methods for air spring assemblies in vehicle active suspensions in related technologies.

[0004] According to one aspect of the embodiments of this application, an air spring assembly testing system is provided, comprising: a loading system, a simulation system, a power supply system, and an exhaust system. The loading system is connected to both the simulation system and the exhaust system, the simulation system is connected to the exhaust system, and the power supply system is connected to both the loading system, the simulation system, and the exhaust system. The loading system is used to simulate the air spring assembly testing environment. The simulation system is used to send a first drive signal to the loading system and a second drive signal to the exhaust system to drive the loading system and the exhaust system to control the air spring assembly in the loading system to adjust the vehicle weight assembly used to simulate vehicle weight in the loading system to different target heights. The system obtains different target durations required for the vehicle weight assembly to adjust to different target heights to complete the testing of the air spring assembly.

[0005] Optionally, the loading system includes: a base, on which a shock absorber controller is disposed, the shock absorber controller being used to respond to a first drive signal to control the stretching or compression of the shock absorber in the air spring assembly until the vehicle weight assembly is adjusted to different target heights; a guide post, at least one guide post being disposed vertically on the base; a vehicle weight assembly being movably connected to the guide post so that the height of the vehicle weight assembly is adjustable in the vertical direction; and a displacement sensor, one end of which is fixed to the guide post and the other end of which is connected to the vehicle weight assembly for obtaining the height of the vehicle weight assembly.

[0006] The test space is formed between the vehicle weight assembly and the shock absorber controller, and the test space is used to house the air spring assembly.

[0007] Optionally, the vehicle weight assembly includes: a bearing movably mounted on a guide column; a support member, the lower surface of which is connected to the air spring assembly, and the support member and the shock absorber controller forming a test space; and a mass block connected to the upper surface of the support member, wherein a force sensor is installed between the mass block and the support member to collect the force on the mass block.

[0008] Optionally, the simulation system is connected to the shock absorber controller to send a first drive signal to the shock absorber controller to drive the shock absorber controller to control the stretching or compression of the shock absorber in the air spring assembly until the vehicle weight assembly is adjusted to different target heights.

[0009] Optionally, the supply and exhaust system is connected to the air spring in the air spring assembly to inflate or exhaust the air spring in response to a second drive signal until the vehicle weight assembly is adjusted to different target heights.

[0010] Optionally, the simulation system includes: a drive unit, a data acquisition unit, and a data processing unit; the drive unit is connected to the shock absorber controller and the air supply and exhaust system respectively, and is used to send a first drive signal and a second drive signal to the shock absorber controller and the air supply and exhaust system respectively, so as to drive the shock absorber in the air spring assembly to stretch or compress, and the air supply and exhaust system to inflate or exhaust the air spring until the vehicle weight mass assembly is adjusted to different target heights; the data acquisition unit is connected to a force sensor, a displacement sensor, and the air spring assembly respectively, and is used to acquire the force condition of the mass block obtained by the force sensor and the modulus obtained by the displacement sensor. The system includes a simulated vehicle mass assembly height and a shock absorber status signal, where the status signal indicates whether the shock absorber can operate normally; a data processing unit, connected to the acquisition unit, is used to generate a first relationship curve between different target heights and different target durations and a second relationship curve between different target durations and the mass assembly's force conditions based on the acquired force conditions of the mass block, the height of the vehicle mass assembly, and the different target durations of the vehicle mass assembly reaching different target heights. The different target durations are determined based on the timing of the first and second drive signals and the timing of the vehicle mass assembly reaching different target heights.

[0011] Optionally, the bearing is also provided with a locking device for fixing the mass block to the bearing.

[0012] According to another aspect of the embodiments of this application, an air spring assembly testing method is also provided, comprising: sending a first drive signal to a loading system and sending a second drive signal to a supply and exhaust system to drive the loading system and the supply and exhaust system to control the air spring assembly in the loading system to adjust the vehicle weight mass assembly used to simulate vehicle weight in the loading system to different target heights, wherein the loading system is used to simulate the air spring assembly testing environment; and determining different target durations for adjusting the vehicle weight mass assembly to different target heights to complete the air spring assembly test.

[0013] Optionally, the drive loading system and the supply and exhaust system control the air spring assembly in the loading system to adjust the vehicle weight mass assembly used to simulate vehicle weight in the loading system to different target heights, including: sending a first drive signal to the shock absorber controller in the loading system and sending a second drive signal to the supply and exhaust system to adjust the vehicle weight mass assembly to different target heights, wherein the first drive signal is used to drive the shock absorber controller to control the shock absorber to stretch or compress, and the second drive signal is used to drive the supply and exhaust system to inflate the air spring or exhaust the air spring.

[0014] Optionally, determining the different target durations required for the vehicle weight assembly to adjust to different target heights includes: determining the time when the first drive signal and the second drive signal are issued and the time when the vehicle weight assembly reaches different target heights; and determining the duration between the time when the first drive signal and the second drive signal are issued and the time when the simulated vehicle weight assembly reaches different target heights as the different target durations required for the vehicle weight assembly to adjust to different target heights.

[0015] In this embodiment, a loading system, a simulation system, a power supply system, and an exhaust system are employed. The loading system is connected to both the simulation system and the exhaust system, and the simulation system is connected to the exhaust system. The power supply system is connected to all three systems. The loading system simulates the testing environment for the air spring assembly. The simulation system sends a first drive signal to the loading system and a second drive signal to the exhaust system to drive the loading system and the exhaust system to control the air spring assembly in the loading system to adjust the vehicle weight assembly (simulating vehicle weight) to different target heights. The system obtains the different target times required for the vehicle weight assembly to adjust to different target heights to complete the air spring assembly test. The air spring assembly testing method involves sending a first drive signal to a loading system that simulates the air spring assembly testing environment and a second drive signal to a supply and exhaust system. This drives the loading system and the supply and exhaust system to control the air spring assembly in the loading system to adjust the vehicle weight mass assembly used to simulate vehicle weight in the loading system to different target heights. Different target durations are determined for adjusting the vehicle weight mass assembly to different target heights to complete the air spring assembly test. This achieves the goal of accurately testing the air spring assembly in the vehicle's active suspension, thus realizing the technical effect of accurately obtaining the air spring assembly test results. Furthermore, it solves the technical problem of lacking a testing method for the air spring assembly in the vehicle's active suspension in related technologies. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a schematic diagram of an air spring assembly testing system according to this application;

[0018] Figure 2 This is a schematic diagram of another air spring assembly testing system according to an embodiment of this application;

[0019] Figure 3 This is a schematic diagram of a test method for an air spring assembly according to this application;

[0020] Figure 4 This is a hardware structure block diagram of a computer terminal (or mobile device) for an air spring assembly testing method according to an embodiment of this application;

[0021] Figure 5 This is a schematic diagram of an air spring assembly testing device according to an embodiment of this application. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] According to an embodiment of this application, an embodiment of an air spring assembly testing system is also provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0025] Figure 1 This is a schematic diagram of the air spring assembly testing system according to an embodiment of this application, as shown below. Figure 1 As shown, the system includes:

[0026] The system comprises a loading system 10, a simulation system 20, a power supply system 30, and an exhaust system 40. The loading system 10 is connected to the simulation system 20 and the exhaust system 30, respectively. The simulation system 20 is connected to the exhaust system 40, and the power supply system 30 is connected to the loading system 10, the simulation system 20, and the exhaust system 40, respectively. The loading system 10 is used to simulate the test environment of the air spring assembly. The simulation system 20 is used to send a first drive signal to the loading system 10 and a second drive signal to the exhaust system 40 to drive the loading system 10 and the exhaust system 40 to control the air spring assembly 101 in the loading system 10 to adjust the vehicle weight mass assembly 102, which is used to simulate vehicle weight in the loading system 10, to different target heights. The system obtains the different target time required for the vehicle weight mass assembly 102 to adjust to different target heights to complete the test of the air spring assembly 101.

[0027] The above system enables the use of a loading system 10, a simulation system 20, a power supply system 30, and an exhaust system 40. The loading system 10 is connected to the simulation system 20 and the exhaust system 30, the simulation system 20 is connected to the exhaust system 40, and the power supply system 30 is connected to both. The loading system 10 simulates the air spring assembly test environment. The simulation system 20 sends a first drive signal to the loading system 10 and a second drive signal to the exhaust system 40 to drive the loading system 10 and the exhaust system 40 to control the air spring assembly 101 in the loading system 10 to adjust the vehicle weight assembly 102 (used to simulate vehicle weight) in the loading system 10 to different target heights. The system also obtains the different target times required for the vehicle weight assembly 102 to adjust to different target heights. To complete the test of the air spring assembly 101, a first drive signal is sent to the loading system 10, which simulates the test environment of the air spring assembly 101, and a second drive signal is sent to the supply and exhaust system 40. This drives the loading system 10 and the supply and exhaust system 40 to control the air spring assembly 101 in the loading system 10 to adjust the vehicle weight mass assembly 102, which simulates the vehicle weight, to different target heights. The different target durations for adjusting the vehicle weight mass assembly 102 to different target heights are determined to complete the test of the air spring assembly 101. This achieves the goal of accurately testing the air spring assembly 101 in the vehicle's active suspension, thereby realizing the technical effect of accurately obtaining the test results of the air spring assembly 101. This solves the technical problem of the lack of a test method for the air spring assembly 101 in the vehicle's active suspension in related technologies.

[0028] It should be noted that the air spring assembly 101 includes at least: an air spring and a shock absorber. Figure 1 (Not shown in the image); the simulation system 20 includes at least: a simulator and a host computer (not shown in the image); Figure 1 (Not shown in the image) is used for simulating the test environment and controlling the various components in the loading system 10 to complete the test of the air spring assembly 101. At the same time, it collects test data, processes and analyzes the data, and generates test results. The air supply and exhaust system 40 is mainly used to charge and deflate the air spring to simulate the working state of the air spring in a real vehicle. The power supply system 30 is mainly used to supply power to the various components in the test system.

[0029] The loading system 10 includes: a base 103, on which a shock absorber controller 104 is disposed, the shock absorber controller 104 being used to respond to a first drive signal to control the stretching or compression of the shock absorbers in the air spring assembly 101 until the vehicle weight mass assembly 102 is adjusted to different target heights; and guide pillars 105, at least one of which is present. Figure 1The structure shown includes two guide posts 105, which are vertically mounted on the base 103; a vehicle weight assembly 102, which is movably connected to the guide posts 105 so that the height of the vehicle weight assembly 102 in the vertical direction can be adjusted; and a displacement sensor 106, one end of which is fixed to the guide post 105 and the other end of which is connected to the vehicle weight assembly 102 to obtain the height of the vehicle weight assembly 102.

[0030] The test space is formed between the vehicle weight assembly 102 and the shock absorber controller 104, and the test space is used to place the air spring assembly 101.

[0031] like Figure 1 As shown, the vehicle weight assembly 102 includes: a bearing 1021, which is movably mounted on a guide post 105; a support member 1022, the lower surface of which is connected to an air spring assembly 101; and a mass block 1023, which is connected to the upper surface of the support member 1022. The support member 1022 and the shock absorber controller 104 form a test space. A force sensor 1025 is installed between the mass block 1023 and the support member 1022 to collect the force on the mass block 1023.

[0032] It should be noted that the support component 1022 can be mounted on a real vehicle in actual application scenarios.

[0033] In one alternative, the simulation system 20 is connected to the shock absorber controller 104 to send a first drive signal to the shock absorber controller 104 to drive the shock absorber controller 104 to control the shock absorber in the air spring assembly 101 to stretch or compress until the vehicle weight assembly 102 is adjusted to different target heights.

[0034] Optionally, the air supply and exhaust system 40 is connected to the air spring in the air spring assembly 101 to inflate or exhaust the air spring in response to a second drive signal until the vehicle weight assembly 102 is adjusted to a different target height.

[0035] Optionally, a locking device 107 is also provided on the bearing 1021 for fixing the mass block 1023 to the bearing 1021.

[0036] like Figure 1 As shown, the loading system 10 also includes a lower connecting seat 108, which is used to fix the shock absorber controller 104.

[0037] In some embodiments of this application, such as Figure 2As shown, the simulation system 20 includes: a drive unit 201, a data acquisition unit 202, and a data processing unit 203. The drive unit 201 is connected to the shock absorber controller 104 and the air supply and exhaust system 40, respectively, and is used to send a first drive signal and a second drive signal to the shock absorber controller 104 and the air supply and exhaust system 40, respectively, to drive the shock absorber 1011 in the air spring assembly 101 to stretch or compress, and the air supply and exhaust system 40 to inflate or exhaust the air spring 1012, until the vehicle weight mass assembly is adjusted to different target heights. The data acquisition unit 202 is connected to the force sensor 1025, the displacement sensor 106, and the air spring assembly 101, respectively, and is used to acquire the force data of the mass block 1023 obtained by the force sensor 1025. The system acquires the height of the simulated vehicle mass assembly 102 and the status signals of the shock absorber 1011 from the displacement sensor 106. The status signals are used to indicate whether the shock absorber 1011 can operate normally. The data processing unit 203, connected to the acquisition unit 202, is used to generate a first relationship curve between different target heights and different target times and a second relationship curve between different target times and the force on the mass block 1023 based on the acquired force on the mass block 1023, the height of the vehicle mass assembly 102, and the different target times required for the vehicle mass assembly 102 to reach different target heights. The different target times are determined based on the time when the first drive signal and the second drive signal are issued and the time when the vehicle mass assembly 102 reaches different target heights.

[0038] Based on the air spring assembly testing system provided in this application, a testing method for air spring assemblies is also provided, such as... Figure 3 As shown, it includes:

[0039] Step S302: Send a first drive signal to the loading system and a second drive signal to the supply and exhaust system to drive the loading system and the supply and exhaust system to control the air spring assembly in the loading system to adjust the vehicle weight mass assembly used to simulate vehicle weight in the loading system to different target heights. The loading system is used to simulate the test environment of the air spring assembly.

[0040] Step S304: Determine the different target times required to adjust the vehicle weight assembly to different target heights in order to complete the test of the air spring assembly.

[0041] In step S302, the specific implementation steps are as follows:

[0042] Step 1: Secure the mass block using the locking device and install the air spring assembly into the loading system;

[0043] Step 2: Inflate the air spring with gas at the specified pressure, release the locking device, and adjust the mass block to the lowest position (target height position, which can be set according to actual needs) by adjusting the air spring pressure, such as the lowest position of the actual vehicle.

[0044] Step 3: Connect the force sensor and displacement sensor to the simulation system. The simulation system receives the signals output by the force sensor and displacement sensor and calibrates the force sensor and displacement sensor in the simulation system to achieve accurate acquisition of sensor signals through the simulation system.

[0045] Step 4: Connect the air supply and exhaust system to the simulation system, and control the air supply and exhaust system through the simulation system;

[0046] Step 5: Connect the simulation system to the vibration damper controller via the communication bus;

[0047] Step 6: Select a DC power supply according to the power supply requirements of the air spring assembly, and establish a connection between the power supply system and the air spring assembly according to the wiring definition. Simultaneously, control the power supply system via digital signals and control its switching via a simulation system.

[0048] Step 7: Based on the functional modules of the air spring assembly, build a control model in the host computer of the simulation system;

[0049] Step 8: The control model includes a drive unit, an acquisition unit, and a data processing unit;

[0050] Step 9: The drive unit is used to send out the first drive signal and the second drive signal to control the air spring assembly to work according to the position of the vehicle weight assembly. The simulation system outputs the signal to the shock absorber controller and the supply and exhaust system through the communication bus. The first drive signal is the maximum tensile force drive signal and the maximum compression force drive signal, respectively. The second drive signal is the inflation signal and the exhaust signal, respectively.

[0051] It should be noted that during the testing of the air spring assembly, when the value fed back by the displacement sensor reaches the target height, the drive signal sent to the shock absorber controller and the air supply and exhaust system is stopped.

[0052] Step 10: The displacement signal of the displacement sensor and the status signal of the shock absorber are collected by the acquisition unit. When the status of the shock absorber is abnormal, the simulation system stops sending the first drive signal to the shock absorber controller and controls the power supply system to cut off the power. The air spring remains in its original state, the locking device is manually locked, and the cause of the shock absorber failure is found.

[0053] Step 11: The data processing unit automatically generates curves showing the relationship between time and displacement, and time and force value in a Cartesian coordinate system with time as the X-axis, and extracts the target time when the target height is reached.

[0054] In practical applications, the testing process for air spring assemblies specifically includes the following methods:

[0055] The first method is to test the function of the air spring assembly when the vehicle weight assembly is raised from the lowest state height to the intermediate state height, and take the time point when the drive signal is issued as the starting point of the test.

[0056] It should be noted that the start point of the test can be used as the zero point of data acquisition time. The force-time relationship curve of the force sensor is collected, and the sampling frequency is not lower than the preset frequency, for example, 512Hz. The status signal of the shock absorber is also detected. When the value of the displacement sensor reaches the intermediate state height, the simulation system stops sending drive signals to the shock absorber controller, the test ends, and the data processing unit automatically generates the relationship curve of time and displacement, and extracts the target time from the vehicle mass assembly rising from the lowest state height to the intermediate state height.

[0057] The second type is the functional test of the air spring assembly when the vehicle weight assembly drops from the intermediate state height to the lowest state height.

[0058] The third type is the functional test of the air spring assembly when the vehicle weight assembly is raised from the lowest state height to the highest state height.

[0059] The fourth type is the functional test of the air spring assembly when the vehicle weight assembly is lowered from its highest state height to its intermediate state height.

[0060] The fifth type is the functional test of the air spring assembly when the vehicle weight assembly is raised from the intermediate height to the highest height of the model.

[0061] The sixth type is the functional test of the air spring assembly when the vehicle weight assembly is lowered from its highest state height to its lowest state height;

[0062] It should be noted that the functional testing process for the above six types is similar to that for the first type, and will not be repeated here. The minimum state height, intermediate state height, and maximum state height are all target heights. It can be understood that the target heights corresponding to the minimum state height, intermediate state height, and maximum state height increase sequentially.

[0063] The target duration corresponding to different target heights is compared with the preset target value to determine the test results.

[0064] It should be noted that the method embodiments provided in this application can be executed on a mobile terminal, computer terminal or similar computing device. Figure 4 A hardware block diagram of a computer terminal (or mobile device) for implementing a testing method for air spring assemblies is shown. Figure 4 As shown, the computer terminal 60 (or mobile device 60) may include one or more processors 602 (shown as 602a, 602b, ..., 602n in the figure) (processor 602 may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.), a memory 604 for storing data, and a transmission module 606 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 4 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, the computer terminal 60 may also include... Figure 4 The more or fewer components shown, or having the same Figure 4 The different configurations shown.

[0065] It should be noted that the aforementioned one or more processors 602 and / or other data processing circuits are generally referred to herein as "data processing circuits". These data processing circuits may be embodied, in whole or in part, in software, hardware, firmware, or any other combination thereof. Furthermore, the data processing circuits may be a single, independent processing module, or may be integrated, in whole or in part, into any other element within the computer terminal 60 (or mobile device). As involved in the embodiments of this application, the data processing circuits serve as a processor control mechanism (e.g., selection of a variable resistor termination path connected to an interface).

[0066] The memory 604 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the air spring assembly testing method in this embodiment. The processor 602 executes various functional applications and data processing by running the software programs and modules stored in the memory 604, thereby realizing the aforementioned air spring assembly testing method. The memory 604 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 604 may further include memory remotely located relative to the processor 602, and these remote memories can be connected to the computer terminal 60 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0067] The transmission module 606 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of the computer terminal 60. In one example, the transmission module 606 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission module 606 may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0068] The display can be, for example, a touchscreen liquid crystal display (LCD) that allows the user to interact with the user interface of the computer terminal 60 (or mobile device).

[0069] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0070] According to another aspect of the embodiments of this application, an air spring assembly testing device is also provided, such as... Figure 5 As shown, it includes: a drive module 70, used to send a first drive signal to the loading system and a second drive signal to the supply and exhaust system, so as to drive the loading system and the supply and exhaust system to control the air spring assembly in the loading system to adjust the vehicle weight mass assembly used to simulate vehicle weight in the loading system to different target heights, wherein the loading system is used to simulate the test environment of the air spring assembly; and a determination module 72, used to determine different target durations for adjusting the vehicle weight mass assembly to different target heights, so as to complete the test of the air spring assembly.

[0071] The drive module 70 includes: a drive submodule for driving the loading system and the supply and exhaust system to control the air spring assembly in the loading system to adjust the vehicle weight mass assembly used to simulate vehicle weight in the loading system to different target heights, including: sending a first drive signal to the shock absorber controller in the loading system and sending a second drive signal to the supply and exhaust system to adjust the vehicle weight mass assembly to different target heights, wherein the first drive signal is used to drive the shock absorber controller to control the shock absorber to stretch or compress, and the second drive signal is used to drive the supply and exhaust system to inflate the air spring or exhaust the air spring.

[0072] The determining module 72 includes: a determining submodule, used to determine the different target durations required for the vehicle weight assembly to adjust to different target heights, including: determining the time when the first drive signal and the second drive signal are issued and the time when the vehicle weight assembly reaches different target heights; and determining the duration between the time when the first drive signal and the second drive signal are issued and the time when the simulated vehicle weight assembly reaches different target heights as the different target durations required for the vehicle weight assembly to adjust to different target heights.

[0073] According to another aspect of the embodiments of this application, a non-volatile storage medium is also provided, including a stored program, wherein, when the program is running, it controls the device where the non-volatile storage medium is located to perform the above-described air spring assembly test method.

[0074] According to another aspect of the embodiments of this application, a computer device is also provided, including a memory, a processor, and a calibration program for an air spring assembly test method stored in the memory and executable on the processor. When the processor executes the program, it implements the above-described air spring assembly test method.

[0075] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0076] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0077] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual couplings, direct couplings, or communication connections may be through some interfaces; indirect couplings or communication connections between units or modules may be electrical or other forms.

[0078] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0079] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0080] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0081] The above are merely preferred embodiments of this application. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A testing method for an air spring assembly, applied to an air spring assembly testing system, characterized in that, The air spring assembly testing system includes: a loading system, a simulation system, a power supply system, and an exhaust system. The loading system is connected to both the simulation system and the exhaust system. The loading system includes a displacement sensor and further includes: a base with a shock absorber controller mounted on it; at least one guide post vertically mounted on the base; and a vehicle weight assembly movably connected to the guide post to allow adjustable height in the vertical direction. The vehicle weight assembly includes: a bearing and a mass block. The bearing is movably mounted on the guide post, and the mass block is connected to a support. The upper surface of the component is connected, and the lower surface of the support component is connected to the air spring assembly. A force sensor is installed between the mass block and the support component to collect the force on the mass block. One end of the displacement sensor is fixed to the guide post, and the other end is connected to the vehicle mass assembly to obtain the height of the vehicle mass assembly. A test space is formed between the vehicle mass assembly and the shock absorber controller, and the test space is used to place the air spring assembly. A locking device is also provided on the bearing to fix the mass block to the bearing. The simulation system is connected to the air supply and exhaust system, and the power supply system is connected to the loading system, the simulation system, and the air damper controller. The air supply and exhaust system is connected; the loading system is used to simulate the test environment of the air spring assembly; the simulation system is used to send a first drive signal to the loading system and a second drive signal to the air supply and exhaust system to drive the loading system and the air supply and exhaust system to control the air spring assembly in the loading system to adjust the vehicle weight assembly used to simulate vehicle weight in the loading system to different target heights; obtain the different target time required for the vehicle weight assembly to adjust to the different target heights to complete the test of the air spring assembly; the simulation system includes: a drive unit, a data acquisition unit, and a data processing unit; the drive unit is connected to the shock absorber controller and the air supply and exhaust system respectively. The system is connected to the shock absorber controller and the air supply and exhaust system, respectively, to send the first drive signal and the second drive signal to drive the shock absorber in the air spring assembly to stretch or compress, respectively. The air supply and exhaust system inflates or deflates the air springs in the air spring assembly until the vehicle weight mass assembly is adjusted to the different target heights. The acquisition unit is connected to the force sensor, the displacement sensor and the air spring assembly, respectively, and is used to acquire the force condition of the mass block obtained by the force sensor, the height of the vehicle weight mass assembly obtained by the displacement sensor and the status signal of the shock absorber, wherein the status signal is used to indicate whether the shock absorber can operate normally.The data processing unit, connected to the acquisition unit, is used to generate a first relationship curve between different target heights and different target durations and a second relationship curve between different target durations and the force on the mass block, based on the acquired force conditions of the mass block, the height of the vehicle mass assembly, and the different target durations for the vehicle mass assembly to reach different target heights. The different target durations are determined based on the times when the first drive signal and the second drive signal are emitted and the times when the vehicle mass assembly reaches the different target heights. The method includes: The mass block is secured using the locking device, and the air spring assembly is installed into the loading system. Gas at a specified pressure is introduced into the air spring, the locking device is released, and the mass block is adjusted to the target height position by adjusting the air pressure of the air spring, wherein the target height position is the lowest position of the actual vehicle. The force sensor and displacement sensor are connected to the simulation system. The simulation system receives the signals output by the force sensor and displacement sensor and calibrates the force sensor and displacement sensor in the simulation system. According to the power supply requirements of the air spring assembly, a DC power supply is selected, and a connection is established between the power supply system and the air spring assembly according to the wiring definition; at the same time, the power supply system is controlled by digital signals, and the switching of the power supply system is controlled by the simulation system. Based on the functional modules of the air spring assembly, a control model is built in the host computer of the simulation system. The control model sends a first drive signal to the damper controller in the loading system and a second drive signal to the air supply and exhaust system to drive the loading system and the air supply and exhaust system to control the air spring assembly to work according to the position of the vehicle weight assembly. The damper controller is used to respond to the first drive signal to control the damper in the air spring assembly to stretch or compress until the vehicle weight assembly is adjusted to the different target heights. Determine the timing of the issuance of the first drive signal and the second drive signal, and the timing of the vehicle weight-mass assembly reaching the different target heights; The duration between the time when the first drive signal and the second drive signal are issued and the time when the vehicle weight assembly reaches the different target heights is determined as the different target durations required for the vehicle weight assembly to adjust to the different target heights. The target duration corresponding to different target heights is compared with the preset target value to determine the test results; The method further includes: in response to the displacement signal value of the displacement sensor reaching the target height, stopping the transmission of the first drive signal to the damper controller and stopping the transmission of the second drive signal to the air supply and exhaust system; in response to the abnormality of the status signal of the damper, stopping the transmission of the first drive signal to the damper controller, controlling the power supply system to cut off power, and controlling the air spring to maintain its original state, so as to determine the cause of the damper failure.

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