Bench test method, device, electronic equipment and medium for active vibration damper

Abstract

The present invention discloses a bench test method, device, electronic device, and medium for an active shock absorber. The method includes: adjusting the active shock absorber to a target position, wherein the target position includes the vehicle's maximum tension position, the vehicle's intermediate position, and the vehicle's maximum compression position; sending a target state drive signal to the active shock absorber, and acquiring a force signal and an active shock absorber internal pressure signal in the target state, wherein the target state includes a maximum tension state and a maximum compression state; determining the system response time of the target state based on the force signal in the target state, and determining the hydraulic pump response time of the target state based on the active shock absorber internal pressure signal in the target state; and determining the bench test results of the active shock absorber based on the system response time and hydraulic pump response time of the active shock absorber at each target position and each target state. The technical solution of the present invention can achieve accurate testing of the response time of the active shock absorber.

Description

Technical Field

[0001] The present invention relates to the technical field of bench testing, and in particular to a bench testing method, device, electronic equipment and medium for an active vibration absorber. Background Art

[0002] With the development of autonomous driving technology, vehicle suspension has evolved from semi-active suspension to active suspension with high response bandwidth. The stiffness and damping characteristics of the active suspension can be dynamically and adaptively adjusted according to the driving conditions of the vehicle (such as the vehicle's motion state and road conditions), so that the suspension system is always in the best vibration reduction state.

[0003] Active shock absorbers are the core components of active suspension systems, and response time is a key technical indicator supporting the research of active shock absorbers. Therefore, how to accurately test the response time of active shock absorbers is an urgent problem to be solved. Summary of the Invention

[0004] The present invention provides a bench test method, device, electronic equipment and medium for an active vibration absorber, so as to accurately test the response time of the active vibration absorber.

[0005] In a first aspect, an embodiment of the present invention provides a bench test method for an active vibration damper, the method comprising:

[0006] Adjusting the active shock absorber to a target position, wherein the target position includes a vehicle maximum extension position, a vehicle middle position, and a vehicle maximum compression position;

[0007] sending a target state drive signal to the active shock absorber, and acquiring a force signal and an internal pressure signal of the active shock absorber under the target state, wherein the target state includes a maximum tension state and a maximum compression state;

[0008] determining a system response time of the target state based on the force signal of the target state, and determining a hydraulic pump response time of the target state based on the internal pressure signal of the active shock absorber of the target state;

[0009] A bench test result of the active shock absorber is determined according to the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state.

[0010] In a second aspect, an embodiment of the present invention further provides a bench test device for an active vibration damper, the device comprising:

[0011] an active shock absorber position adjustment module, configured to adjust the active shock absorber to a target position, wherein the target position includes a vehicle maximum extension position, a vehicle middle position, and a vehicle maximum compression position;

[0012] a signal acquisition module, configured to send a target state drive signal to the active shock absorber and acquire a force signal and an internal pressure signal of the active shock absorber under the target state, wherein the target state includes a maximum tension state and a maximum compression state;

[0013] a response time determination module, configured to determine a system response time of a target state based on a force signal of the target state, and to determine a hydraulic pump response time of the target state based on an internal pressure signal of the active shock absorber of the target state;

[0014] The bench test result determination module is used to determine the bench test result of the active shock absorber according to the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state.

[0015] In a third aspect, an embodiment of the present invention further provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the program, a bench test method for an active vibration absorber as described in any one of the embodiments of the present invention is implemented.

[0016] In a fourth aspect, an embodiment of the present invention further provides a storage medium storing computer-executable instructions, wherein the computer-executable instructions, when executed by a computer processor, are used to perform the bench test method for an active vibration absorber as described in any one of the embodiments of the present invention.

[0017] The technical solution of the embodiments of the present invention adjusts the active shock absorber to different target positions and, under different target states at different target positions, collects force signals and the internal pressure signal of the active shock absorber. The system response time is determined based on the force signals, and the hydraulic pump response time is determined based on the internal pressure signal of the active shock absorber. The bench test results of the active shock absorber are determined based on the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state. The technical solution of the embodiments of the present invention can accurately detect the response time of the active shock absorber, with low implementation cost and simple operation.

[0018] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 This is a flow chart of a bench test method for an active vibration absorber provided in Example 1 of the present invention;

[0021] Figure 2 This is a flow chart of a bench test method for an active vibration damper provided in the second embodiment of the present invention;

[0022] Figure 3 1 is a schematic structural diagram of a bench test system for an active vibration damper provided in a second embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of a bench test process for an active vibration damper provided in the second embodiment of the present invention;

[0024] Figure 5 1 is a schematic structural diagram of a bench test device for an active vibration damper provided in a third embodiment of the present invention;

[0025] Figure 6 This is a structural diagram of an electronic device provided in Example 4 of the present invention. DETAILED DESCRIPTION

[0026] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0028] Example 1

[0029] Figure 1A flowchart of a bench test method for an active vibration absorber is provided for the first embodiment of the present invention. This embodiment is applicable to bench tests of active vibration absorbers. The method can be performed by a bench test device for the active vibration absorber. The bench test device for the active vibration absorber can be implemented in the form of hardware and / or software. The bench test device for the active vibration absorber can be configured in an electronic device, for example, a simulation device.

[0030] like Figure 1 As shown, the method includes:

[0031] S110: Adjust the active shock absorber to a target position.

[0032] The target positions include the vehicle's maximum extension position, the vehicle's middle position, and the vehicle's maximum compression position.

[0033] In this embodiment, the vehicle's maximum stretching position, the vehicle's middle position, and the vehicle's maximum compression position can be predetermined based on vehicle parameters, active shock absorber parameters, and bench test system parameters. This embodiment does not limit the method for determining the vehicle's maximum stretching position, the vehicle's middle position, and the vehicle's maximum compression position.

[0034] In this embodiment, the response time of the active shock absorber is tested sequentially at different positions. For example, the active shock absorber can be first adjusted to the vehicle's maximum extension position, and S120-S130 are executed to obtain the system response time and hydraulic pump response time under each target state when the active shock absorber is at the vehicle's maximum extension position. The active shock absorber is then adjusted to the vehicle's middle position, and S120-S130 are repeated to obtain the system response time and hydraulic pump response time under each target state when the active shock absorber is at the vehicle's middle position. Finally, the active shock absorber is adjusted to the vehicle's maximum compression position, and S120-S130 are repeated to obtain the system response time and hydraulic pump response time under each target state when the active shock absorber is at the vehicle's maximum compression position. However, this embodiment does not limit the number of target positions or the order in which the target positions are adjusted.

[0035] S120 : Sending a target state driving signal to the active shock absorber, and acquiring a force signal under the target state and an internal pressure signal of the active shock absorber.

[0036] The target state includes a maximum tension state and a maximum compression state.

[0037] The maximum tension state drive signal instructs the active shock absorber to adjust the vehicle body height, vehicle damping characteristics, and other methods to achieve the maximum tension active force output by the active shock absorber. Similarly, the maximum compression state drive signal instructs the active shock absorber to adjust the vehicle body height, vehicle damping characteristics, and other methods to achieve the maximum compression active force output by the active shock absorber. The maximum tension active force and the maximum compression active force can be pre-determined based on vehicle parameters, active shock absorber parameters, and other factors.

[0038] The force signal represents the active force output by the active shock absorber and can be sampled by a force sensor installed in a test bench system for the active shock absorber and connected to the active shock absorber. The active shock absorber internal pressure signal represents the internal pressure of the active shock absorber and can be calculated by the active shock absorber controller. This embodiment does not limit the specific method by which the active shock absorber controller calculates the internal pressure of the active shock absorber.

[0039] In this embodiment, after the active shock absorber is fixed at the target position, the response time of the active shock absorber is tested sequentially in different states. For example, a drive signal can be first sent to the active shock absorber in the maximum tension state, and the force signal and internal pressure signal of the active shock absorber in the maximum tension state are collected. Then, a drive signal can be sent to the active shock absorber in the maximum compression state, and the force signal and internal pressure signal of the active shock absorber in the maximum compression state are collected. This embodiment does not limit the order of the maximum tension state and the maximum compression state.

[0040] S130 : Determine a system response time of the target state according to the force signal of the target state, and determine a hydraulic pump response time of the target state according to the internal pressure signal of the active shock absorber of the target state.

[0041] In this embodiment, while sending the target state drive signal to the active vibration absorber, force signals are collected in real time, and the system response time is determined based on each collected force signal. Specifically, when the force value reaches a maximum, it is equivalent to the active vibration absorber outputting the maximum active force in the target state. The time difference between the time when the force value reaches the maximum value and the time when the first force signal is collected can be used as the system response time of the active vibration absorber.

[0042] Similarly, while sending the target state drive signal to the active shock absorber, the active shock absorber's internal pressure signal is collected in real time. The hydraulic pump response time is determined based on each collected active shock absorber internal pressure signal. Specifically, the time difference between the time when the active shock absorber internal pressure reaches its maximum value and the time when the first active shock absorber internal pressure signal is collected can be used as the hydraulic pump response time for the active shock absorber.

[0043] S140 : Determine bench test results of the active shock absorber according to the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state.

[0044] In this embodiment, the system response time and hydraulic pump response time in the maximum tension state and the maximum compression state of the active shock absorber are obtained when the active shock absorber is in the maximum tension position of the vehicle; the system response time and hydraulic pump response time in the maximum tension state and the system response time and hydraulic pump response time in the maximum compression state of the active shock absorber are obtained when the active shock absorber is in the middle position of the vehicle; and the system response time and hydraulic pump response time in the maximum tension state and the system response time and hydraulic pump response time in the maximum compression state of the active shock absorber when the active shock absorber is in the maximum compression position of the vehicle. Based on the obtained response times, whether the bench test result of the active shock absorber is qualified is determined. If the bench test result is unqualified, the unqualified response time can be used to locate the problem.

[0045] Specifically, S140 includes: comparing the system response time of the active shock absorber at the target position and target state with the standard system response time at the target position and target state to determine a comparison result; comparing the hydraulic pump response time of the active shock absorber at the target position and target state with the standard hydraulic pump response time at the target position and target state to determine a comparison result; and determining a bench test result of the active shock absorber based on the comparison results.

[0046] Optionally, each response time can be compared with its matching standard response time. For example, the system response time of the active shock absorber at the vehicle's maximum extension position and state can be compared with the standard system response time at the vehicle's maximum extension position and state. If the absolute value of the difference between the response time and the matching standard response time is less than a preset difference threshold, or the difference between the response time and the matching standard response time divided by the standard response time is less than a preset ratio threshold, then the response time is considered qualified. A response time interval can also be pre-set; if the response time falls within the matching response time interval, then the response time is considered qualified.

[0047] Furthermore, after obtaining the comparison results of the response times, if the comparison results of the response times are all qualified, it means that the bench test result of the active shock absorber is qualified.

[0048] The technical solution of the embodiments of the present invention adjusts the active shock absorber to different target positions and, under different target states at different target positions, collects force signals and the internal pressure signal of the active shock absorber. The system response time is determined based on the force signals, and the hydraulic pump response time is determined based on the internal pressure signal of the active shock absorber. The bench test results of the active shock absorber are determined based on the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state. The technical solution of the embodiments of the present invention can accurately detect the response time of the active shock absorber, with low implementation cost and simple operation.

[0049] Example 2

[0050] Figure 2 This is a flow chart of a bench test method for an active vibration damper provided in the second embodiment of the present invention. Based on the above embodiments, this embodiment of the present invention further specifies the signal acquisition process, the response time determination process, and the bench test result determination process.

[0051] like Figure 2 As shown, the method includes:

[0052] S210. Adjust the active vibration absorber to a target position by adjusting the vertical installation height of the active vibration absorber in the bench test system.

[0053] Figure 3 A structural diagram of a bench test system for an active vibration absorber is provided. Figure 3 As shown, the bench test system for the active vibration damper includes a loading system, a power supply system, and a real-time simulation system. The loading system further comprises a guide seat, an upper connecting seat, a lower connecting seat, a base, an adjustable crossbeam, a force sensor, an active vibration damper assembly, and an active vibration damper controller. The guide seat and the lower connecting seat are connected to the base, and the adjustable crossbeam can move axially along the guide seat. The vertical mounting height of the active vibration damper is adjusted by adjusting the adjustable crossbeam. After the active vibration damper is adjusted to the target position, the adjustable crossbeam is rigidly fixed to the guide seat.

[0054] S220 : Send a target state driving signal to the active shock absorber, and collect a force signal in the target state and an internal pressure signal of the active shock absorber at the same collection frequency.

[0055] The force signal is acquired by a force sensor in a bench test system, and the internal pressure signal of the active shock absorber is obtained by feedback from an active shock absorber controller.

[0056] Specifically, Figure 3 For example, the upper end of the force sensor is fixed below the upper connecting seat, and the lower end is fixed to the active shock absorber. Figure 4 A schematic diagram of the bench test process of an active vibration absorber is provided, such as Figure 4 As shown, the power supply system provides power to the active shock absorber, while the real-time simulation system establishes communication with the force sensor and, at the same time, establishes a connection with the active shock absorber controller via CAN (Controller Area Network). The real-time simulation system sends a target state drive signal to the active shock absorber and collects the force signal from the force sensor and the internal pressure signal of the active shock absorber from the active shock absorber controller. The data processing unit of the real-time simulation system then determines the bench test results based on the collected force signals and internal pressure signals of the active shock absorber.

[0057] By collecting the force signal of the force sensor and the internal pressure signal of the active shock absorber of the active shock absorber controller at the same collection frequency, when a relationship curve is subsequently generated based on the collected signals, the time coordinate axis of the relationship curve between force and time and the relationship curve between the internal pressure of the active shock absorber and time are the same. Therefore, when the response time is determined based on the relationship curve, the granularity of the determined system response time and the hydraulic pump response time is the same.

[0058] S230: Determine whether the driving stop condition is met according to the internal pressure signal of the active shock absorber. If so, execute S240; otherwise, return to execute S220.

[0059] Furthermore, if it is determined that the current internal pressure of the active shock absorber is greater than or equal to a preset pressure value threshold, it is determined that the driving stop condition is met.

[0060] In an embodiment of the present invention, after the real-time simulation system sends the target state drive signal to the active shock absorber controller, the real-time simulation system monitors the collected internal pressure signal of the active shock absorber in real time. If it is determined that the current internal pressure of the active shock absorber has reached a preset pressure value threshold, the sending of the target state drive signal to the active shock absorber is stopped, and the collection of the force signal and the internal pressure signal of the active shock absorber under the target state at the target position is completed.

[0061] S240: Stop sending the target state driving signal to the active vibration absorber.

[0062] S250 : Generate a force-time relationship curve based on each force signal in the target state and the acquisition time of each force signal.

[0063] Specifically, curve fitting can be performed on each collected force signal with time as the horizontal axis to obtain a curve of the relationship between force and time. This embodiment does not limit the specific method of curve fitting.

[0064] S260 : Determine the system response time of the target state according to the time corresponding to the maximum force value in the force-time relationship curve.

[0065] In the force-time relationship curve, the time corresponding to the maximum force value is extracted, and the time difference between the time corresponding to the maximum force value and the start time is used as the system response time of the target state.

[0066] S270 : Generate a curve of the relationship between the internal pressure of the active shock absorber and time according to the internal pressure signals of the active shock absorbers in the target state and the acquisition time of the internal pressure signals of the active shock absorbers.

[0067] Similarly, curve fitting can be performed on the collected internal pressure signals of each active shock absorber with time as the horizontal axis to obtain a relationship curve between the internal pressure of the active shock absorber and time. This embodiment does not limit the specific method of curve fitting.

[0068] S280 : Determine the hydraulic pump response time of the target state according to the time corresponding to the maximum value of the active shock absorber internal pressure in the relationship curve between the active shock absorber internal pressure and time.

[0069] Similarly, in the relationship curve between the internal pressure of the active shock absorber and time, the time corresponding to the maximum internal pressure of the active shock absorber is extracted, and the time difference between the time corresponding to the maximum internal pressure of the active shock absorber and the start time is used as the hydraulic pump response time of the target state.

[0070] It should be noted that S250 - S260 and S270 - S280 may be executed simultaneously or sequentially, and this embodiment does not limit this.

[0071] S290: Determine a bench test result of the active shock absorber according to the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state.

[0072] The specific process of determining the bench test results based on the obtained system response time and hydraulic pump response time at each target position and each target state has been described in the above embodiment and will not be repeated in this embodiment.

[0073] Example 3

[0074] Figure 5 This is a schematic diagram of the structure of a bench test device for an active vibration damper provided in the third embodiment of the present invention. Figure 5 As shown, the device includes: an active shock absorber position adjustment module 310 , a signal acquisition module 320 , a response time determination module 330 and a bench test result determination module 340 .

[0075] in:

[0076] An active shock absorber position adjustment module 310 is configured to adjust the active shock absorber to a target position, wherein the target position includes a vehicle maximum extension position, a vehicle intermediate position, and a vehicle maximum compression position;

[0077] a signal acquisition module 320 for sending a target state drive signal to the active shock absorber and acquiring a force signal and an internal pressure signal of the active shock absorber under the target state, wherein the target state includes a maximum tension state and a maximum compression state;

[0078] a response time determination module 330 for determining a system response time of a target state based on the force signal of the target state, and determining a hydraulic pump response time of the target state based on the active shock absorber internal pressure signal of the target state;

[0079] The bench test result determination module 340 is configured to determine a bench test result of the active shock absorber based on the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state.

[0080] The technical solution of the embodiments of the present invention adjusts the active shock absorber to different target positions and, under different target states at different target positions, collects force signals and the internal pressure signal of the active shock absorber. The system response time is determined based on the force signals, and the hydraulic pump response time is determined based on the internal pressure signal of the active shock absorber. The bench test results of the active shock absorber are determined based on the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state. The technical solution of the embodiments of the present invention can accurately detect the response time of the active shock absorber, with low implementation cost and simple operation.

[0081] Based on the above embodiment, the active shock absorber position adjustment module 310 includes:

[0082] The active vibration absorber position adjustment unit is used to adjust the active vibration absorber to a target position by adjusting the vertical installation height of the active vibration absorber in the bench test system.

[0083] Based on the above embodiment, the signal acquisition module 320 includes:

[0084] a signal acquisition unit, configured to send a target state driving signal to the active shock absorber, and to acquire a force signal in the target state and an internal pressure signal of the active shock absorber at the same acquisition frequency;

[0085] The active shock absorber internal pressure determination unit is configured to stop sending the target state driving signal to the active shock absorber if it is determined that a driving stop condition is satisfied according to the active shock absorber internal pressure signal.

[0086] On the basis of the above embodiment, the force signal is acquired by a force sensor in the bench test system, and the internal pressure signal of the active shock absorber is obtained by feedback from the active shock absorber controller.

[0087] Based on the above embodiment, the active shock absorber internal pressure determination unit is specifically configured to:

[0088] If it is determined that the current internal pressure of the active shock absorber is greater than or equal to the preset pressure value threshold, it is determined that the driving stop condition is met.

[0089] Based on the above embodiment, the response time determination module 330 includes:

[0090] a first relationship curve generating unit, configured to generate a relationship curve between force and time according to each force signal in a target state and a collection time of each force signal;

[0091] a first response time determination unit, configured to determine a system response time of a target state according to a time corresponding to a maximum force value in a force-time relationship curve;

[0092] a second relationship curve generating unit, configured to generate a relationship curve between the internal pressure of the active shock absorber and time according to the internal pressure signals of the active shock absorbers in the target state and the acquisition time of the internal pressure signals of the active shock absorbers;

[0093] The second response time determination unit is configured to determine the hydraulic pump response time of the target state according to the time corresponding to the maximum value of the active shock absorber internal pressure in the relationship curve between the active shock absorber internal pressure and time.

[0094] Based on the above embodiment, the bench test result determination module 340 includes:

[0095] a first comparing unit, configured to compare a system response time of the active shock absorber at a target position and a target state with a standard system response time at the target position and the target state, and determine a comparison result;

[0096] a second comparing unit, configured to compare a hydraulic pump response time of the active shock absorber at a target position and a target state with a standard hydraulic pump response time at the target position and the target state, and determine a comparison result;

[0097] The bench test result determining unit is used to determine the bench test result of the active vibration absorber according to each comparison result.

[0098] The bench test device for the active vibration absorber provided in the embodiment of the present invention can execute the bench test method for the active vibration absorber provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0099] Example 4

[0100] Figure 6A schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0101] like Figure 6 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., which is communicatively connected to the at least one processor 11. The memory stores a computer program that can be executed by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. Various programs and data required for the operation of the electronic device 10 can also be stored in the RAM 13. The processor 11, ROM 12, and RAM 13 are connected to each other via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0102] Multiple components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0103] The processor 11 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any other suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the bench test method for the active vibration damper.

[0104] In some embodiments, the bench test method for an active vibration damper can be implemented as a computer program tangibly embodied in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the bench test method for an active vibration damper described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to execute the bench test method for an active vibration damper via any other suitable means (e.g., via firmware).

[0105] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0106] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0107] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0108] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0109] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0110] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0111] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0112] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A bench test method for an active vibration damper, characterized in that: include: Adjusting the active shock absorber to a target position, wherein the target position includes a vehicle maximum extension position, a vehicle middle position, and a vehicle maximum compression position; sending a target state drive signal to the active shock absorber, and acquiring a force signal and an internal pressure signal of the active shock absorber under the target state, wherein the target state includes a maximum tension state and a maximum compression state, and the force signal represents an active force output by the active shock absorber; determining a system response time of the target state based on the force signal of the target state, and determining a hydraulic pump response time of the target state based on the internal pressure signal of the active shock absorber of the target state; A bench test result of the active shock absorber is determined according to the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state.

2. The method according to claim 1, characterized in that Adjust the active dampers to the target position, including: The active vibration absorber is adjusted to the target position by adjusting the vertical installation height of the active vibration absorber in the bench test system.

3. The method according to claim 1, characterized in that Sending a target state drive signal to the active shock absorber and acquiring a force signal and an internal pressure signal of the active shock absorber in the target state includes: Sending a target state driving signal to the active vibration absorber, and collecting a force signal in the target state and an internal pressure signal of the active vibration absorber at the same collection frequency; If it is determined according to the internal pressure signal of the active shock absorber that the driving stop condition is satisfied, sending the target state driving signal to the active shock absorber is stopped.

4. The method according to claim 3, characterized in that The force signal is collected by a force sensor in a bench test system, and the internal pressure signal of the active shock absorber is obtained by feedback from an active shock absorber controller.

5. The method according to claim 3, characterized in that The driving stop condition is determined to be met according to the internal pressure signal of the active shock absorber, including: If it is determined that the current internal pressure of the active shock absorber is greater than or equal to the preset pressure value threshold, it is determined that the driving stop condition is met.

6. The method according to claim 1, characterized in that Based on the force signal in the target state, determine the system response time of the target state, including: Generate a force-time relationship curve based on each force signal under the target state and the acquisition time of each force signal; Determine the system response time of the target state based on the time corresponding to the maximum force in the force-time relationship curve, where the system response time of the target state is the time difference between the time when the active shock absorber outputs the maximum active force in the target state and the time when the first force signal is collected; Determine the hydraulic pump response time of the target state according to the internal pressure signal of the active shock absorber in the target state, including: generating a relationship curve between the internal pressure of the active shock absorber and time according to the internal pressure signals of each active shock absorber under the target state and the acquisition time of each active shock absorber internal pressure signal; The hydraulic pump response time for the target state is determined based on the time corresponding to the maximum internal pressure of the active shock absorber in the relationship curve between the internal pressure of the active shock absorber and time. The time difference between the time when the internal pressure of the active shock absorber reaches the maximum value and the time when the first active shock absorber internal pressure signal is collected is used as the hydraulic pump response time of the active shock absorber.

7. The method according to claim 1, characterized in that Determining bench test results of the active shock absorber based on the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state includes: comparing a system response time of the active shock absorber at a target position and a target state with a standard system response time at the target position and the target state to determine a comparison result; comparing a hydraulic pump response time of the active shock absorber at a target position and a target state with a standard hydraulic pump response time at the target position and the target state to determine a comparison result; According to each comparison result, the bench test result of the active vibration absorber is determined.

8. A bench test device for an active vibration absorber, characterized in that: include: an active shock absorber position adjustment module, configured to adjust the active shock absorber to a target position, wherein the target position includes a vehicle maximum extension position, a vehicle middle position, and a vehicle maximum compression position; a signal acquisition module, configured to send a target state drive signal to the active shock absorber, and acquire a force signal and an internal pressure signal of the active shock absorber under the target state, wherein the target state includes a maximum tension state and a maximum compression state, and the force signal represents an active force output by the active shock absorber; a response time determination module, configured to determine a system response time of a target state based on a force signal of the target state, and to determine a hydraulic pump response time of the target state based on an internal pressure signal of the active shock absorber of the target state; The bench test result determination module is used to determine the bench test result of the active shock absorber according to the system response time and the hydraulic pump response time of the active shock absorber at each target position and each target state.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the bench test method for the active vibration absorber according to any one of claims 1 to 7 is implemented.

10. A storage medium storing computer executable instructions, characterized in that: When the computer executable instructions are executed by a computer processor, they are used to perform the bench test method for the active vibration absorber according to any one of claims 1 to 7.

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