Vehicle key assembly durability verification method and device
By collecting and analyzing the road spectra of the whole vehicle and key assemblies, building a verification bench system, obtaining the durability signal of the whole vehicle, and generating the durability signal of the key assembly, the problem of low efficiency in durability verification of vehicle key assemblies in the existing technology is solved, and efficient durability verification is achieved.
Patent Information
- Application Number
- CN202510818934.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-18
- Publication Date
- 2025-09-19
AI Technical Summary
The existing technology for durability verification of key vehicle assemblies has low efficiency, long cycles, poor repeatability, and delayed rectification time, making it difficult to meet the needs of new product development.
By collecting the road spectra of the whole vehicle and key assemblies, analyzing and processing the target signals of the whole vehicle, building a verification bench system, obtaining the durability signals of the whole vehicle, generating the durability signals of the key assemblies, and using these signals to verify the durability of the prototype vehicle.
It improves the efficiency of durability verification of key vehicle assemblies, shortens the verification cycle, and improves the repeatability and accuracy of verification.
Smart Images
Figure CN120668389A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of vehicle testing technology, and in particular to a method and device for verifying the durability of a key vehicle assembly. Background Art
[0002] Because critical assemblies frequently experience high-frequency and high-intensity loads such as vibration and shock, they often experience problems such as loosening, cracking, and leakage during the development phase of new products, especially new energy vehicles. To ensure rapid product launch, a mature and effective vehicle-mounted verification method is urgently needed. Existing technologies typically install critical assemblies on the entire vehicle and conduct durability tests on proving ground roads or faulty roads. This approach suffers from long cycle times, poor repeatability, and delayed rectification.
[0003] In summary, how to improve the efficiency of durability verification of key vehicle assemblies is a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention
[0004] In view of this, the present application provides a method and device for durability verification of key vehicle assemblies, aiming to improve the efficiency of durability verification of key vehicle assemblies.
[0005] In a first aspect, the present application provides a method for verifying the durability of a key vehicle assembly, comprising:
[0006] Collect road spectra of complete vehicles and key assemblies;
[0007] Analyze and process the road spectrum to obtain the vehicle target signal;
[0008] Build a verification bench system;
[0009] Obtain vehicle durability signals based on the verification test bench system and vehicle target signals;
[0010] Generate key assembly durability signals based on vehicle durability signals;
[0011] Based on the verification bench system, the durability of key assemblies of the prototype vehicle is verified using the durability signals of key assemblies.
[0012] Optionally, collect road spectra of the entire vehicle and key assemblies, including:
[0013] Install key assemblies on the vehicle;
[0014] Setting sensors on key assemblies;
[0015] The vehicle is driven according to preset requirements so that the sensors can collect the road spectrum of the vehicle and key assemblies.
[0016] Optionally, the verification bench system includes a prototype vehicle, a road simulation test bench, a road simulation test bench control system, a signal acquisition device, an acquisition terminal, and a cab suspension position acceleration sensor.
[0017] Optionally, obtaining a vehicle durability signal based on the verification test bench system and the vehicle target signal includes:
[0018] The test bench system is stimulated and verified using the white noise signal generated by the road simulation test bench control system, and the test bench response signals of the acceleration and displacement of the prototype vehicle are collected using the signal acquisition equipment;
[0019] The test bench system model is calculated based on the test bench response signal and the white noise signal;
[0020] Determine the target test bench drive signal based on the test bench system model and the vehicle target signal;
[0021] The target test bench signal is processed to obtain the basic durability signal of the vehicle.
[0022] Optionally, determining a target test bench drive signal based on the test bench system model and the vehicle target signal includes:
[0023] According to the test bench system model and the vehicle target signal, the first test bench drive signal is obtained by calculation;
[0024] Using the first test bench drive signal to stimulate the verification test bench system and collect the first test bench response signal;
[0025] If the error between the first test bench response signal and the vehicle target signal is less than or equal to the error threshold, the first test bench drive signal is determined as the target test bench drive signal.
[0026] Optionally, after exciting the verification gantry system with the first gantry drive signal and acquiring the first gantry response signal, the method further includes:
[0027] If the error between the first test bench response signal and the vehicle target signal is greater than the error threshold, the first error driving signal is calculated using the error between the first test bench response signal and the vehicle target signal and the test bench system model;
[0028] Correcting the first stage drive signal using the first error drive signal to obtain a second stage drive signal;
[0029] Using the second test bench drive signal to stimulate the verification test bench system and collect the second test bench response signal;
[0030] If the error between the second test bench response signal and the vehicle target signal is less than or equal to the error threshold, the second test bench drive signal is determined as the target test bench drive signal;
[0031] If the error between the second test bench response signal and the vehicle target signal is greater than the error threshold, the third error driving signal is calculated using the error between the second test bench response signal and the vehicle target signal and the test bench system model.
[0032] Optionally, a key assembly durability signal is generated based on the vehicle durability signal, including:
[0033] Determine the type of critical assembly; the type of critical assembly is either verification assembly or non-verification assembly;
[0034] Determine the coefficient based on the type of critical assembly;
[0035] Multiply the coefficient by the vehicle durability signal to obtain the key assembly durability signal.
[0036] In a second aspect, the present application provides a vehicle key assembly durability verification device, comprising:
[0037] The acquisition module is used to collect the road spectra of the entire vehicle and key assemblies;
[0038] The analysis and processing module is used to analyze and process the road spectrum to obtain the vehicle target signal;
[0039] Building modules for building verification bench systems;
[0040] An acquisition module is used to obtain the vehicle durability signal based on the verification test bench system and the vehicle target signal;
[0041] A generation module is used to generate a key assembly durability signal based on the vehicle durability signal;
[0042] The durability verification module is used to verify the durability of key assemblies of the prototype vehicle based on the verification bench system and using the durability signals of key assemblies.
[0043] Optionally, the acquisition module includes:
[0044] Installation submodule, used to install key assemblies on the vehicle;
[0045] A setting submodule is used to set sensors on key assemblies;
[0046] The acquisition submodule is used to drive the entire vehicle according to preset requirements so that the sensors can collect the road spectrum of the entire vehicle and key assemblies.
[0047] Optionally, the verification bench system includes a prototype vehicle, a road simulation test bench, a road simulation test bench control system, a signal acquisition device, an acquisition terminal, and a cab suspension position acceleration sensor.
[0048] Optionally, obtain modules, including:
[0049] The excitation submodule is used to use the white noise signal generated by the road simulation test bench control system to excite the test bench system, and use the signal acquisition equipment to collect the test bench response signals of the acceleration and displacement of the prototype vehicle;
[0050] The first calculation submodule is used to calculate the test bench system model according to the test bench response signal and the white noise signal;
[0051] The first determination submodule is used to determine the target test bench drive signal according to the test bench system model and the vehicle target signal;
[0052] The processing submodule is used to process the target test bench signal to obtain the basic durability signal of the whole vehicle.
[0053] Optionally, the first determining submodule includes:
[0054] A first calculation unit is used to calculate and obtain a first test bench drive signal according to the test bench system model and the vehicle target signal;
[0055] A first excitation unit is used to excite the verification test bench system using a first test bench drive signal and collect a first test bench response signal;
[0056] The first determining unit is configured to determine the first platform driving signal as the target platform driving signal if the error between the first platform response signal and the vehicle target signal is less than or equal to an error threshold.
[0057] Optionally, the device further comprises:
[0058] a second calculation unit, configured to calculate a first error driving signal using the error between the first test bench response signal and the vehicle target signal and a test bench system model if the error between the first test bench response signal and the vehicle target signal is greater than an error threshold;
[0059] a correction unit, configured to correct the first stage drive signal using the first error drive signal to obtain a second stage drive signal;
[0060] A second excitation unit is used to excite the verification test bench system using a second test bench drive signal and collect a second test bench response signal;
[0061] a second determining unit, configured to determine the second test bench drive signal as a target test bench drive signal if an error between the second test bench response signal and the vehicle target signal is less than or equal to an error threshold;
[0062] The third calculation unit is used to calculate a third error driving signal using the error between the second test bench response signal and the vehicle target signal and the test bench system model if the error between the second test bench response signal and the vehicle target signal is greater than the error threshold.
[0063] Optionally, generate a module including:
[0064] The second determination submodule is used to determine the type of the key assembly; the type of the key assembly is a verification assembly or a non-verification assembly;
[0065] A third determination submodule is used to determine the coefficient according to the type of the key assembly;
[0066] The second calculation submodule is used to multiply the coefficient by the vehicle durability signal to obtain the key assembly durability signal.
[0067] In a third aspect, an embodiment of the present application provides a computer device comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the vehicle key assembly durability verification method described in any one of the implementation methods in the first aspect of the embodiment of the present application.
[0068] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which instructions are stored. When the instructions are executed on a terminal device, the terminal device executes the vehicle key assembly durability verification method described in any one of the implementation methods in the first aspect of the embodiment of the present application.
[0069] The present application provides a method for verifying the durability of a vehicle's key assemblies. When executing the method, the road spectra of the entire vehicle and key assemblies are first collected. Then, the road spectra are analyzed and processed to obtain the target signal of the entire vehicle. Then, a verification bench system is built. Based on the verification bench system and the target signal of the entire vehicle, the durability signal of the entire vehicle is obtained. Then, based on the durability signal of the entire vehicle, the durability signal of the key assembly is generated. Finally, based on the verification bench system, the durability signal of the key assembly is used to verify the durability of the key assembly of the prototype vehicle. In this way, by collecting the road spectra of the entire vehicle and key assemblies and analyzing and processing them to obtain the target signal of the entire vehicle, after building the verification bench system, the durability signal of the entire vehicle is obtained by combining the system and the target signal, and then the durability signal of the key assembly is generated. Finally, the durability signal of the key assembly of the prototype vehicle is verified using the signal, which can improve the efficiency of the durability verification of the vehicle's key assemblies. BRIEF DESCRIPTION OF THE DRAWINGS
[0070] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0071] Figure 1 A flowchart of a method for verifying the durability of a key vehicle assembly provided in an embodiment of the present application;
[0072] Figure 2 A schematic diagram of the structure of a verification bench system provided in an embodiment of the present application;
[0073] Figure 3 A schematic structural diagram of a vehicle key assembly durability verification device provided in an embodiment of the present application;
[0074] Figure 4 A schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION
[0075] The following, in conjunction with the accompanying drawings, provides a clear and complete description of the technical solutions in the embodiments of this application. This application provides a method and device for verifying the durability of a key vehicle assembly, which are used in the field of vehicle testing technology. The above is merely an example and does not limit the application areas of the method and device provided in this application.
[0076] Because critical assemblies frequently experience high-frequency and high-intensity loads such as vibration and shock, they often experience problems such as loosening, cracking, and leakage during the development phase of new products, especially new energy vehicles. To ensure rapid product launch, a mature and effective vehicle-mounted verification method is urgently needed. Existing technologies typically install critical assemblies on the entire vehicle and conduct durability tests on proving ground roads or faulty roads. This approach suffers from long cycle times, poor repeatability, and delayed rectification.
[0077] After research, the inventors proposed the technical solution of this application. First, the road spectrum of the entire vehicle and key assemblies is collected. Then, the road spectrum is analyzed and processed to obtain the target signal of the entire vehicle. Then, a verification bench system is built. Based on the verification bench system and the target signal of the entire vehicle, the durability signal of the entire vehicle is obtained. Then, based on the durability signal of the entire vehicle, the durability signal of the key assembly is generated. Finally, based on the verification bench system, the durability signal of the key assembly is used to verify the durability of the key assembly of the prototype vehicle. In this way, by collecting the road spectrum of the entire vehicle and key assemblies and analyzing and processing them to obtain the target signal of the entire vehicle, after building the verification bench system, the durability signal of the entire vehicle is obtained by combining the system and the target signal, and then the durability signal of the key assembly is generated. Finally, the durability signal of the key assembly of the prototype vehicle is verified using the signal, which can improve the efficiency of durability verification of the key assembly of the vehicle.
[0078] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the embodiments described are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative work are within the scope of protection of the present application. It should be noted that, for ease of description, only the parts related to the relevant invention are shown in the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.
[0079] See also Figure 1 , Figure 1 A flowchart of a method for verifying the durability of a key vehicle assembly provided in an embodiment of the present application includes:
[0080] S101: Collect road spectra of the entire vehicle and key assemblies.
[0081] First, the key assembly needs to be installed on the whole vehicle, and sensors such as acceleration sensors, strain sensors or displacement sensors need to be arranged on the key assembly to be verified as needed. Acceleration sensors are installed at the axle head position of the whole vehicle, and displacement sensors are installed at the suspension to measure the displacement signal of the body relative to the chassis.
[0082] The vehicle equipped with the verified key assembly will be weighted according to the requirements of the reliability and durability test specifications and driven according to the specified route and speed. When collecting data for specific purposes to solve problems reported by users, data will be collected on relevant sections of social roads according to the user's actual driving speed and load conditions. In this way, the road spectrum of the entire vehicle and key assemblies can be obtained.
[0083] At this time, after completing a complete cycle of acquisition, you should promptly judge whether the signal is valid from the aspects of whether the signal at the symmetrical position is symmetrical and whether the signal is abnormal. Generally, at least 3 sets of valid road spectra are collected for each working condition; in addition, check whether the sensors in each part are loose, falling off, or other abnormal conditions.
[0084] S102: Analyze and process the road spectrum to obtain the vehicle target signal.
[0085] The collected road spectra are analyzed and processed, and the target signals of the whole vehicle and key assemblies are obtained respectively through channel extraction, filtering and removal of singular values.
[0086] S103: Build a verification bench system.
[0087] like Figure 2 As shown, Figure 2This is a structural schematic diagram of a verification bench system provided in an embodiment of the present application. The verification bench system includes a prototype vehicle 1 (including an installed cab assembly), a road simulation test bench 2, a road simulation test bench control system 3, a signal acquisition device 4, an acquisition terminal 5, and a cab suspension position acceleration sensor 6.
[0088] In addition to the cab assembly, the assembly carried by the whole vehicle for verification can also be an axle, leaf spring, power battery, three-in-one assembly, etc. The following takes the installation of the cab assembly as an example to illustrate the scheme of the present invention. The prototype vehicle 1 is installed on the road simulation test bench 2, and the cab assembly is installed on the prototype vehicle 1. The acceleration sensor 6 of the cab suspension position is fixed at the suspension position where the cab is connected to the beam. The acceleration and displacement sensors collected by the whole vehicle and the collection sensors of the cab assembly are all installed and fixed in the same state during collection. In addition to the suspension position, the acceleration sensors installed on the cab can be installed or strain gauges can be pasted at the upper and lower bending beams, vertical beams and other positions. The type, position and number of the sensors are mainly determined according to the road failure mode (cracking, loosening, etc.) and the stress concentration area of the simulation analysis.
[0089] The road simulation test bench control system 3 operates in a closed-loop manner, controlling the road simulation test bench 2. The control system issues commands to control the road simulation test bench to complete various test actions. Simultaneously, signal acquisition equipment 4 collects displacement signals from the test bench and acceleration sensor signals from the prototype vehicle (including its assembly) and inputs them into the road simulation test bench control system. An acquisition terminal 5 is connected to the signal acquisition equipment 4 via a network cable. Parameters such as sensitivity and range can be configured on the acquisition terminal 5. The acquired road spectrum data and waveforms can be viewed on the acquisition terminal 5, and analysis and processing of the road spectrum can also be performed.
[0090] S104: Obtaining a vehicle durability signal based on the verification test bench system and the vehicle target signal.
[0091] Firstly, the white noise signal generated by the control system of the road simulation test bench is used to excite the verification test bench system. At the same time, the test bench response signal of the acceleration and displacement of the sample vehicle is collected by the signal acquisition equipment. The test bench system model is calculated using the test bench response signal and the white noise signal.
[0092] Next, a first test bench drive signal is calculated using the test bench system model and the vehicle target signal. The test bench system is stimulated and verified using the first test bench drive signal, and a first test bench response signal is collected. If the error between the first test bench response signal and the vehicle target signal is less than or equal to an error threshold, the first test bench drive signal is determined as the target test bench drive signal. The error threshold is set by those skilled in the art based on experience, for example, a 10% error threshold for passenger cars and a 20% error threshold for heavy trucks. If the error between the first test bench response signal and the vehicle target signal is greater than the error threshold, a first error drive signal is calculated using the error between the first test bench response signal and the vehicle target signal and the test bench system model. The first error drive signal is used to correct the first test bench drive signal to obtain a second test bench drive signal. The test bench system is stimulated and verified using the second test bench drive signal, and the second test bench response signal is collected. If the error between the second test bench response signal and the vehicle target signal is less than or equal to the error threshold, the second test bench drive signal is determined as the target test bench drive signal. If the error between the second test bench response signal and the vehicle target signal is greater than the error threshold, the third error drive signal is calculated using the error between the second test bench response signal and the vehicle target signal and the test bench system model. Through this iterative method, a test bench response signal that meets the error requirements is ultimately obtained, and the test bench drive signal at this time is determined as the target test bench drive signal.
[0093] Generally, each road surface (e.g., cobblestone, washboard, etc.) undergoes the above process to obtain its own final test bench drive signal. The final test bench drive signals for all test surfaces are then combined using damage equivalence and other methods to produce the vehicle's base durability signal. This base vehicle durability signal can be used for vehicle-level durability testing. If a vehicle-level durability signal for this or a similar vehicle model is already available before conducting critical assembly verification, the vehicle-level durability signal can be directly used to generate the critical assembly drive signal.
[0094] S105: Generate a key assembly durability signal based on the vehicle durability signal.
[0095] First, it is necessary to determine the type of critical assembly, which includes: verification assembly and non-verification assembly.
[0096] Verify that the assembly-related channels are multiplied by appropriate coefficients: The key assembly drive signal is generated based on the basic durability signal of the whole vehicle. Next, the generation process of the key assembly drive signal is explained using the cab assembly as an example. First, the whole vehicle is driven by the basic durability signal of the whole vehicle. At the same time, the signal acquisition equipment is used to collect the bench response signals of all sensors of the cab assembly. The amplitude of the cab assembly bench response signal and the road target signal are analyzed and compared on the acquisition terminal. Then, according to the difference, the drive signal of the relevant channel is multiplied by an appropriate coefficient to generate the durability signal of the key assembly. For the cab assembly, its relevant channel is the front wheel. For example, the acceleration of the left suspension is closely related to the left front wheel, and the acceleration of the right suspension is closely related to the right front wheel:
[0097] Left front wheel durability signal = left front wheel drive signal of vehicle basic durability signal × LF;
[0098] Right front wheel durability signal = right front wheel drive signal of vehicle basic durability signal × RF;
[0099] Among them, LF is the left front wheel coefficient, and RF is the right front wheel coefficient.
[0100] The relevant channels of non-verification assemblies are multiplied by coefficients significantly less than 1: Determining the left rear wheel coefficient LR and the right rear wheel coefficient RR requires comprehensive consideration. First, consider that the non-verification assembly should have as few failures as possible during the verification cab assembly, and it is best not to have any failures. Once a non-verification part fails, it will waste a lot of time to repair it, delaying the test progress. For example, when the longitudinal beam assembly is cracked and repaired, the sample vehicle needs to be unloaded from the test bench, and the cargo box needs to be removed from the whole vehicle before the cracks on the inside and outside can be welded. Replacing cracked axles or leaf springs also takes a lot of time. The replacement of non-verification samples also increases the additional test costs. For this reason, for the rear wheels, they are multiplied by coefficients significantly less than 1 to reduce or even avoid failures of axles, leaf springs and longitudinal beams:
[0101] Left rear wheel durability signal = left rear wheel drive signal of vehicle basic durability signal × LR;
[0102] Right rear wheel durability signal = right rear wheel drive signal of vehicle basic durability signal × RR.
[0103] The coefficients are determined as follows: The initial increase in the left and right front wheel coefficients, LF and RF, must be small to avoid excessive damage to the cab and other assemblies. Adjust the coefficient increase as appropriate after observing the growth trend. The left and right coefficients can be adjusted based on the difference between the acceleration signals at the left and right points of interest and the target road signal. They can be unequal; for example, if the left deviation is large, the left coefficient can be larger, while if the right deviation is small, the coefficient can be smaller. The left and right rear coefficients, LR and RR, are decreasing and should be as small as possible. Initially, both can be set to 50%. After observing that they have no significant impact on the cab assembly signal, they can be fixed after small adjustments. LF and RF are adjusted until the extreme values and root mean square (RMS) of the acceleration amplitudes at each point on the cab assembly are within 10% of the road, and the ratio of the vertical (Z-direction) acceleration damage to the road is between 0.8 and 1.2, and the ratio in the non-Z-direction is between 0.5 and 2. At this point, LF and RF are the final coefficients. For example, the coefficients for the left front (LF), right front (RF), left rear (LR), and right rear (RR) wheels of a pickup truck determined using the above method are 136%, 140%, 55%, and 55%, respectively. Once the coefficients for all wheels of the vehicle are adjusted, their corresponding drive signals become the test bench durability signals for the cab assembly.
[0104] S106: Based on the verification bench system, the durability of key assemblies of the prototype vehicle is verified using the durability signals of key assemblies.
[0105] After the durability signal of the key assembly is generated, the acceleration, displacement and other sensors on the prototype vehicle and its key assemblies are removed, and the key assembly durability signal is played back on the road simulation test bench in a loop for the same total number of cycles as the durability of the entire vehicle, thus completing the durability verification of the key assembly.
[0106] In the embodiment provided in this application, the road spectra of the entire vehicle and key assemblies are first collected. Next, the road spectra are analyzed and processed to obtain the entire vehicle's target signals. Then, a verification bench system is built. Based on the verification bench system and the entire vehicle's target signals, the entire vehicle's durability signals are obtained. Then, based on the entire vehicle's durability signals, key assembly durability signals are generated. Finally, based on the verification bench system and the key assembly durability signals, the durability of the key assemblies of the prototype vehicle is verified. In this way, by collecting the road spectra of the entire vehicle and key assemblies and analyzing and processing them to obtain the entire vehicle's target signals, building the verification bench system, combining the system and the target signals to obtain the entire vehicle's durability signals, and then generating key assembly durability signals. Finally, using these signals to perform durability verification on the prototype vehicle's key assemblies, the efficiency of durability verification of the vehicle's key assemblies can be improved.
[0107] The above are some specific implementations of the vehicle key assembly durability verification method provided in the embodiments of this application. Based on this, this application also provides a corresponding device. The device provided in the embodiments of this application will be introduced from the perspective of functional modularization.
[0108] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of a vehicle key assembly durability verification device provided in an embodiment of the present application. The vehicle key assembly durability verification device 300 includes:
[0109] The acquisition module 310 is used to collect the road spectrum of the entire vehicle and key assemblies;
[0110] The analysis and processing module 320 is used to analyze and process the road spectrum to obtain the vehicle target signal;
[0111] A construction module 330 is used to construct a verification bench system;
[0112] An acquisition module 340 is used to acquire a vehicle durability signal based on the verification test bench system and the vehicle target signal;
[0113] A generating module 350 is used to generate a key assembly durability signal based on the vehicle durability signal;
[0114] The durability verification module 360 is used to verify the durability of key assemblies of the prototype vehicle based on the verification bench system and using the durability signals of key assemblies.
[0115] Optionally, the acquisition module 310 includes:
[0116] Installation submodule, used to install key assemblies on the vehicle;
[0117] A setting submodule is used to set sensors on key assemblies;
[0118] The acquisition submodule is used to drive the entire vehicle according to preset requirements so that the sensors can collect the road spectrum of the entire vehicle and key assemblies.
[0119] Optionally, the verification bench system includes a prototype vehicle, a road simulation test bench, a road simulation test bench control system, a signal acquisition device, an acquisition terminal, and a cab suspension position acceleration sensor.
[0120] Optionally, the acquisition module 340 includes:
[0121] The excitation submodule is used to use the white noise signal generated by the road simulation test bench control system to excite the test bench system, and use the signal acquisition equipment to collect the test bench response signals of the acceleration and displacement of the prototype vehicle;
[0122] The first calculation submodule is used to calculate the test bench system model according to the test bench response signal and the white noise signal;
[0123] The first determination submodule is used to determine the target test bench drive signal according to the test bench system model and the vehicle target signal;
[0124] The processing submodule is used to process the target test bench signal to obtain the basic durability signal of the whole vehicle.
[0125] Optionally, the first determining submodule includes:
[0126] A first calculation unit is used to calculate and obtain a first test bench drive signal according to the test bench system model and the vehicle target signal;
[0127] A first excitation unit is used to excite the verification test bench system using a first test bench drive signal and collect a first test bench response signal;
[0128] The first determining unit is configured to determine the first platform driving signal as the target platform driving signal if the error between the first platform response signal and the vehicle target signal is less than or equal to an error threshold.
[0129] Optionally, the apparatus 300 further includes:
[0130] a second calculation unit, configured to calculate a first error driving signal using the error between the first test bench response signal and the vehicle target signal and a test bench system model if the error between the first test bench response signal and the vehicle target signal is greater than an error threshold;
[0131] a correction unit, configured to correct the first stage drive signal using the first error drive signal to obtain a second stage drive signal;
[0132] A second excitation unit is used to excite the verification test bench system using a second test bench drive signal and collect a second test bench response signal;
[0133] a second determining unit, configured to determine the second test bench drive signal as a target test bench drive signal if an error between the second test bench response signal and the vehicle target signal is less than or equal to an error threshold;
[0134] The third calculation unit is used to calculate a third error driving signal using the error between the second test bench response signal and the vehicle target signal and the test bench system model if the error between the second test bench response signal and the vehicle target signal is greater than the error threshold.
[0135] Optionally, the generating module 350 includes:
[0136] The second determination submodule is used to determine the type of the key assembly; the type of the key assembly is a verification assembly or a non-verification assembly;
[0137] A third determination submodule is used to determine the coefficient according to the type of the key assembly;
[0138] The second calculation submodule is used to multiply the coefficient by the vehicle durability signal to obtain the key assembly durability signal.
[0139] The embodiments of the present application also provide corresponding devices and computer storage media for implementing the solutions provided by the embodiments of the present application.
[0140] like Figure 4 As shown, computer device 01 is a general-purpose computing device. Components of computer device 01 may include, but are not limited to, one or more processors or processor units 03, system memory 08, and bus 04 connecting various system components (including system memory 08 and processor unit 03).
[0141] Bus 04 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, an accelerated graphics port, a processor, or a local bus using any of a variety of bus architectures. Examples of these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.
[0142] The computer device 01 typically includes a variety of computer system readable media, which can be any available media that can be accessed by the computer device 01, including volatile and non-volatile media, removable and non-removable media.
[0143] System memory 08 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 09 and / or cache memory 10. Computer device 01 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 11 may be used to read and write non-removable, non-volatile magnetic media ( Figure 4 Not shown, often called a "hard drive"). Although Figure 4 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk"), and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to the bus 04 via one or more data medium interfaces. The system memory 08 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of various embodiments of the present invention.
[0144] A program / utility 12 having a set (at least one) of program modules 13 may be stored, for example, in system memory 08. Such program modules 13 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may include an implementation of a network environment. Program modules 13 generally perform the functions and / or methods of the embodiments described herein.
[0145] The computer device 01 may also communicate with one or more external devices 02 (e.g., a keyboard, a pointing device, a display 07, etc.), one or more devices that enable a user to interact with the computer device 01, and / or any device that enables the computer device 01 to communicate with one or more other computing devices (e.g., a network card, a modem, etc.). Such communication may be performed via an input / output (I / O) interface 06. Furthermore, the computer device 01 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network, such as the Internet) via a network adapter 05. Figure 4 As shown, the network adapter 05 communicates with other modules of the computer device 01 via the bus 04. Figure 4 Not shown, other hardware and / or software modules may be used in conjunction with the computer device 01, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.
[0146] The processor unit 03 executes various functional applications and data processing by running programs stored in the system memory 08, such as implementing a vehicle key assembly durability verification method provided in an embodiment of the present application.
[0147] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.
[0148] Through the description of the above embodiments, it can be known that those skilled in the art can clearly understand that all or part of the steps in the above embodiment methods can be implemented by means of software plus a general hardware platform. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a storage medium, such as a read-only memory (ROM) / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network communication device such as a router) to execute the methods described in each embodiment or certain parts of the embodiments of the present application.
[0149] Each embodiment in this specification is described in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments. In particular, for the device embodiment, since it is basically similar to the method embodiment, the description is relatively simple. For the relevant parts, refer to the partial description of the method embodiment. Some or all of the modules can be selected according to actual needs to achieve the purpose of the embodiment. Those of ordinary skill in the art can understand and implement it without paying any creative work.
[0150] The above description is merely an exemplary embodiment of the present application and is not intended to limit the scope of protection of the present application.
Claims
1. A method for verifying the durability of a key vehicle assembly, characterized in that: include: Collect road spectra of complete vehicles and key assemblies; Analyze and process the road spectrum to obtain the vehicle target signal; Build a verification bench system; Obtain vehicle durability signals based on the verification test bench system and vehicle target signals; Generate key assembly durability signals based on vehicle durability signals; Based on the verification bench system, the durability of key assemblies of the prototype vehicle is verified using the durability signals of key assemblies.
2. The method according to claim 1, characterized in that Collect road spectra of the entire vehicle and key assemblies, including: Install key assemblies on the vehicle; Setting sensors on key assemblies; The vehicle is driven according to preset requirements so that the sensors can collect the road spectrum of the vehicle and key assemblies.
3. The method according to claim 1, characterized in that The verification bench system includes a prototype vehicle, a road simulation test bench, a road simulation test bench control system, signal acquisition equipment, an acquisition terminal, and a cab suspension position acceleration sensor.
4. The method according to claim 3, characterized in that Based on the verification test bench system and the vehicle target signal, the vehicle durability signal is obtained, including: The test bench system is stimulated and verified using the white noise signal generated by the road simulation test bench control system, and the test bench response signals of the acceleration and displacement of the prototype vehicle are collected using the signal acquisition equipment; According to the test bench response signal and white noise signal, the test bench system model is calculated; Determine the target test bench drive signal based on the test bench system model and the vehicle target signal; The target test bench signal is processed to obtain the basic durability signal of the vehicle.
5. The method according to claim 4, characterized in that Determine the target test bench drive signal based on the test bench system model and the vehicle target signal, including: According to the test bench system model and the vehicle target signal, the first test bench drive signal is obtained by calculation; Using the first test bench drive signal to stimulate the verification test bench system and collect the first test bench response signal; If the error between the first test bench response signal and the vehicle target signal is less than or equal to the error threshold, the first test bench drive signal is determined as the target test bench drive signal.
6. The method according to claim 5, characterized in that After exciting the verification gantry system with the first gantry drive signal and acquiring the first gantry response signal, the method further includes: If the error between the first test bench response signal and the vehicle target signal is greater than the error threshold, the first error driving signal is calculated using the error between the first test bench response signal and the vehicle target signal and the test bench system model; Correcting the first stage drive signal using the first error drive signal to obtain a second stage drive signal; Using the second test bench drive signal to stimulate the verification test bench system and collect the second test bench response signal; If the error between the second test bench response signal and the vehicle target signal is less than or equal to the error threshold, the second test bench drive signal is determined as the target test bench drive signal; If the error between the second test bench response signal and the vehicle target signal is greater than the error threshold, the third error driving signal is calculated using the error between the second test bench response signal and the vehicle target signal and the test bench system model.
7. The method according to claim 1, characterized in that Generate key assembly durability signals based on vehicle durability signals, including: Determine the type of critical assembly; the type of critical assembly is either verification assembly or non-verification assembly; Determine the coefficient based on the type of critical assembly; Multiply the coefficient by the vehicle durability signal to obtain the key assembly durability signal.
8. A vehicle key assembly durability verification device, characterized in that: include: The acquisition module is used to collect the road spectra of the entire vehicle and key assemblies; The analysis and processing module is used to analyze and process the road spectrum to obtain the vehicle target signal; Building modules for building verification bench systems; An acquisition module is used to obtain the vehicle durability signal based on the verification test bench system and the vehicle target signal; A generation module is used to generate a key assembly durability signal based on the vehicle durability signal; The durability verification module is used to verify the durability of key assemblies of the prototype vehicle based on the verification bench system and using the durability signals of key assemblies.
9. A computer device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the method for verifying the durability of a key vehicle assembly as claimed in any one of claims 1 to 7 is implemented.
10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores instructions, which, when executed on a terminal device, cause the terminal device to execute the vehicle key assembly durability verification method according to any one of claims 1 to 7.