Method, device and equipment for verifying durability and reliability of high-integration novel driving unit

Abstract

The invention relates to the technical field of vehicles, in particular to a high-integration novel driving unit durability reliability verification method, device and equipment, and the method comprises the steps: obtaining a current test demand of a to-be-tested high-integration novel driving unit; simulation parameters, simulation parameters, first loading parameters, second loading parameters and electrical parameters are determined according to current test requirements, and a simulation module, a road load simulation platform, a drum vertical loading system, a wheel load dynamic loading mechanism and an electrical system are respectively controlled to be in corresponding states; the control module is used for sending control parameters to the to-be-tested high-integration novel driving unit, the measuring module is used for measuring current test parameters of the to-be-tested high-integration novel driving unit, and a performance test result of the to-be-tested high-integration novel driving unit is obtained according to the current test parameters. Therefore, the problems of high test cost and large danger coefficient of the high-integration novel driving unit are solved, and funds and time can be saved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a method, device and equipment for verifying the durability reliability of a highly integrated new type of driving unit. Background Art

[0002] The highly integrated new driving unit is a modular assembly formed by deeply integrating the driving, braking, steering and suspension functions on the basis of the wheel-side / hub motor distributed drive architecture. It can realize the integrated control of the longitudinal, transverse and vertical multi-dimensional motion of the whole vehicle, and maximize the comprehensive motion control performance of the chassis domain. The whole vehicle equipped with the highly integrated new driving unit can have novel operation modes such as in-situ steering, fixed-point steering, crab-walking into the warehouse and diagonal lane changing, enriching the vehicle service scenarios. In addition, while supporting the modular development of the chassis, the highly integrated new driving unit technology can promote the decoupling design of the chassis and the body, greatly accelerating the vehicle development cycle. Therefore, the highly integrated new driving unit technology is considered to be a strategic core technology in the field of vehicle engineering and an ideal carrier for the future intelligent chassis of automobiles under the guidance of the "New Four Modernizations".

[0003] However, the industry currently lacks industrial-grade testing equipment for highly integrated new travel units under the boundary conditions of the whole vehicle, resulting in the inability to effectively carry out durability and reliability verification of highly integrated new travel units on the test bench that simulates the use conditions and environment of the whole vehicle. It can only be completed through road tests under the conditions of vehicle installation. The testing cost is high, the risk factor is high, the cycle is long, and the optimization and update are delayed, which needs to be solved urgently. Summary of the invention

[0004] The present application provides a durability and reliability verification method, device and equipment for a highly integrated new type of driving unit, so as to solve the problems that the related technology cannot effectively carry out durability and reliability verification of a highly integrated new type of driving unit under simulated vehicle use conditions and environment on a test bench, and the testing cost is high and the risk factor is high. It can save development funds and time costs and shorten the research and development cycle.

[0005] The first aspect of the present application provides a method for verifying the durability and reliability of a highly integrated new travel unit. The method adopts a performance verification system, which includes a measurement module, a control module, a simulation module, a fixed bracket, a road load simulation platform arranged on the fixed bracket, a drum vertical loading system, a wheel load dynamic loading mechanism and an electrical system. The method includes the following steps:

[0006] Obtain the current test requirements of the highly integrated new driving unit to be tested;

[0007] Determining, according to the current test requirements, control parameters of the control module, simulation parameters of the simulation module, simulation parameters of the road load simulation platform, first loading parameters of the drum vertical loading system, second loading parameters of the wheel load dynamic loading mechanism, and electrical parameters of the electrical system;

[0008] Based on the simulation parameters, the simulation parameters, the first loading parameters, the second loading parameters and the electrical parameters, the simulation module, the road load simulation platform, the drum vertical loading system, the wheel load dynamic loading mechanism and the electrical system are respectively controlled to be in corresponding states, and the control module is used to send the control parameters to the highly integrated new type of driving unit to be tested, and the measurement module is used to measure the current test parameters of the highly integrated new type of driving unit to be tested, and the performance test results of the highly integrated new type of driving unit to be tested are obtained according to the current test parameters.

[0009] Optionally, in some embodiments, the current test requirement includes: at least one of a first performance test under a test field road test boundary condition, a second performance test combined with a temperature load, an impact resistance test, and a smoothness test.

[0010] Optionally, in some embodiments, when the current test requirement is the first performance test under the boundary conditions of the test field road test, measuring the current test parameters of the to-be-tested highly integrated new type of driving unit by using the measurement module, and obtaining the performance test results of the to-be-tested highly integrated new type of driving unit according to the current test parameters, includes:

[0011] After inputting the first wheel slip angle and the first driving torque into the highly integrated new travel unit to be tested, using the measuring module to measure a first performance parameter of the highly integrated new travel unit to be tested, wherein the first wheel slip angle and the first driving torque are obtained by simulating a test field simulation environment built by the simulation module;

[0012] A first performance test result under the test field road test boundary conditions is obtained according to the first performance parameter.

[0013] Optionally, in some embodiments, when the current test requirement is the second performance test combined with the temperature load, measuring the current test parameters of the to-be-tested highly integrated novel travel unit by using the measurement module, and obtaining the performance test results of the to-be-tested highly integrated novel travel unit according to the current test parameters, includes:

[0014] Based on multiple test temperatures and multiple vehicle driving simulation conditions, after inputting the second wheel slip angle and the second driving torque into the highly integrated new driving unit to be tested, the second performance parameter of the highly integrated new driving unit to be tested is measured by using the measuring module, wherein the second wheel slip angle and the second driving torque are obtained by simulating a test field simulation environment built by the simulation module;

[0015] A second performance test result combined with a temperature load under a test field road test boundary condition is obtained according to the second performance parameter.

[0016] Optionally, in some embodiments, when the current test requirement is the impact resistance test, measuring the current test parameters of the to-be-tested highly integrated new travel unit by using the measurement module, and obtaining the performance test results of the to-be-tested highly integrated new travel unit according to the current test parameters, includes:

[0017] Determine a plurality of target vehicle speeds and a plurality of target vehicle sideslip angles, input the plurality of target vehicle speeds and the plurality of target vehicle sideslip angles into the highly integrated new driving unit to be tested based on a plurality of road conditions, and use the measurement module to measure a third performance parameter of the highly integrated new driving unit to be tested under a plurality of road conditions, and the plurality of target vehicle speeds and the plurality of target vehicle sideslip angles, wherein the third performance parameter comprises at least one of a suspension load, a longitudinal force, a lateral force, and a turning moment;

[0018] An impact resistance test result is obtained according to the third performance parameter.

[0019] Optionally, in some embodiments, when the current test requirement is the ride comfort test, measuring the current test parameters of the to-be-tested highly integrated novel travel unit by using the measurement module, and obtaining the performance test results of the to-be-tested highly integrated novel travel unit according to the current test parameters, includes:

[0020] Based on a preset hardware-in-the-loop simulation test environment, the measurement module is used to measure the key parameters of the suspension load of the highly integrated new travel unit to be tested;

[0021] Feeding back the key parameters of the suspension load of the highly integrated new travel unit to be tested to the dynamics control system to obtain the vehicle seat position acceleration;

[0022] Based on the vehicle seat position acceleration, a smoothness test result of the highly integrated new type of traveling unit to be tested is obtained.

[0023] The second aspect of the present application provides a highly integrated new travel unit durability reliability verification device, the device adopts a performance verification system, the performance verification system includes a measurement module, a control module, a simulation module, a fixed bracket, a road load simulation platform arranged on the fixed bracket, a drum vertical loading system, a wheel load dynamic loading mechanism and an electrical system, wherein the device includes:

[0024] An acquisition module is used to obtain the current test requirements of the highly integrated new driving unit to be tested;

[0025] a determination module, for determining, according to the current test requirements, control parameters of the control module, simulation parameters of the simulation module, simulation parameters of the road load simulation platform, first loading parameters of the drum vertical loading system, second loading parameters of the wheel load dynamic loading mechanism, and electrical parameters of the electrical system;

[0026] A test module is used to control the simulation module, the road load simulation platform, the drum vertical loading system, the wheel load dynamic loading mechanism and the electrical system to be in corresponding states based on the simulation parameters, the simulation parameters, the first loading parameters, the second loading parameters and the electrical parameters, and use the control module to send the control parameters to the highly integrated new travel unit to be tested, and use the measurement module to measure the current test parameters of the highly integrated new travel unit to be tested, and obtain the performance test results of the highly integrated new travel unit to be tested according to the current test parameters.

[0027] Optionally, in some embodiments, the current test requirement includes: at least one of a first performance test under a test field road test boundary condition, a second performance test combined with a temperature load, an impact resistance test, and a smoothness test.

[0028] Optionally, in some embodiments, when the current test requirement is the first performance test under the test field road test boundary conditions, the test module includes:

[0029] A first input unit is used for measuring a first performance parameter of the highly integrated new travel unit to be tested by using the measurement module after inputting a first wheel slip angle and a first driving torque into the highly integrated new travel unit to be tested, wherein the first wheel slip angle and the first driving torque are obtained by simulating a test field simulation environment built by the simulation module;

[0030] The first generating unit is used to obtain a first performance test result under a test field road test boundary condition according to the first performance parameter.

[0031] Optionally, in some embodiments, when the current test requirement is the second performance test combined with the temperature load, the test module includes:

[0032] A second input module is used for inputting a second wheel slip angle and a second driving torque into the highly integrated new driving unit to be tested based on multiple test temperatures and multiple vehicle driving simulation conditions, and then using the measurement module to measure a second performance parameter of the highly integrated new driving unit to be tested, wherein the second wheel slip angle and the second driving torque are obtained by simulating a test field simulation environment built by the simulation module;

[0033] The second generating unit is used to obtain a second performance test result combined with a temperature load under a test field road test boundary condition according to the second performance parameter.

[0034] Optionally, in some embodiments, when the current test requirement is the impact resistance test, the test module includes:

[0035] a third input unit, for determining a plurality of target vehicle speeds and a plurality of target vehicle sideslip angles, inputting the plurality of target vehicle speeds and the plurality of target vehicle sideslip angles into the highly integrated new driving unit to be tested based on a plurality of road conditions, and using the measurement module to measure a third performance parameter of the highly integrated new driving unit to be tested under a plurality of road conditions, and the plurality of target vehicle speeds and the plurality of target vehicle sideslip angles, wherein the third performance parameter comprises at least one of a suspension load, a longitudinal force, a lateral force, and a turning moment;

[0036] The third generating unit is used to obtain an impact resistance test result according to the third performance parameter.

[0037] Optionally, in some embodiments, when the current test requirement is the ride comfort test, the test module includes:

[0038] A measuring unit, used for measuring the key parameters of the suspension load of the highly integrated new travel unit to be tested by using the measuring module based on a preset hardware-in-the-loop simulation test environment;

[0039] A feedback unit, used for feeding back the key parameters of the suspension load of the highly integrated new travel unit to be tested to the dynamics control system to obtain the vehicle seat position acceleration;

[0040] The fourth generating unit is used to obtain the smoothness test result of the highly integrated new type of traveling unit to be tested based on the vehicle seat position acceleration.

[0041] The third aspect of the present application provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the durability reliability verification method of the highly integrated new driving unit as described in the above embodiment.

[0042] The fourth aspect of the present application provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement the durability reliability verification method of a highly integrated new driving unit as described in the above embodiment.

[0043] Thus, by obtaining the current test requirements of the highly integrated new travel unit to be tested, and determining the control parameters of the control module, the simulation parameters of the simulation module, the simulation parameters of the road load simulation platform, the first loading parameters of the drum vertical loading system, the second loading parameters of the wheel load dynamic loading mechanism and the electrical parameters of the electrical system according to the current test requirements, and based on the simulation parameters, the simulation parameters, the first loading parameters, the second loading parameters and the electrical parameters, respectively control the simulation module, the road load simulation platform, the drum vertical loading system, the wheel load dynamic loading mechanism and the electrical system to be in corresponding states, and use the control module to send the control parameters to the highly integrated new travel unit to be tested, and use the measurement module to measure the current test parameters of the highly integrated new travel unit to be tested, and obtain the performance test results of the highly integrated new travel unit to be tested according to the current test parameters. Thus, the problem that the relevant technology cannot effectively carry out the durability and reliability verification of the highly integrated new travel unit under the simulated vehicle use conditions and environment on the test bench, and the test cost is high and the risk factor is high can be solved, which can save development funds and time costs and shorten the research and development cycle.

[0044] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0046] Figure 1 A schematic diagram of a highly integrated new type of travel unit durability and reliability verification device provided according to an embodiment of the present application;

[0047] Figure 2 A schematic diagram of an electrical system provided according to an embodiment of the present application;

[0048] Figure 3 A schematic diagram of the principle of a durability reliability verification method for a highly integrated novel travel unit provided according to an embodiment of the present application;

[0049] Figure 4 It is a flow chart of a durability reliability verification method of a highly integrated new type of driving unit provided according to an embodiment of the present application;

[0050] Figure 5 It is a block diagram of a highly integrated novel driving unit durability reliability verification device provided according to an embodiment of the present application;

[0051] Figure 6 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present application. DETAILED DESCRIPTION

[0052] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0053] The following describes the durability reliability verification method, device and equipment of the highly integrated new driving unit according to the embodiment of the present application with reference to the accompanying drawings. In view of the problems that the related technologies mentioned in the above background technology cannot effectively carry out durability and reliability verification of highly integrated new driving units under simulated vehicle use conditions and environments on a test bench, and the testing cost is high and the risk factor is high, the present application provides a durability and reliability verification method for highly integrated new driving units. In the method, the current test requirements of the highly integrated new driving unit to be tested are obtained, and the control parameters of the control module, the simulation parameters of the simulation module, the simulation parameters of the road load simulation platform, the first loading parameters of the drum vertical loading system, the second loading parameters of the wheel load dynamic loading mechanism and the electrical parameters of the electrical system are determined according to the current test requirements. Based on the simulation parameters, the simulation parameters, the first loading parameters, the second loading parameters and the electrical parameters, the simulation module, the road load simulation platform, the drum vertical loading system, the wheel load dynamic loading mechanism and the electrical system are respectively controlled to be in corresponding states, and the control module is used to send the control parameters to the highly integrated new driving unit to be tested, and the measurement module is used to measure the current test parameters of the highly integrated new driving unit to be tested, and the performance test results of the highly integrated new driving unit to be tested are obtained according to the current test parameters. This solves the problem that related technologies cannot effectively carry out durability and reliability verification of highly integrated new driving units under simulated vehicle usage conditions and environments on the test bench, and the testing costs and risks are high. This can save development funds and time costs and shorten the R&D cycle.

[0054] Before introducing the durability reliability verification method of the highly integrated new driving unit according to the embodiment of the present application, the performance verification system adopted by the durability reliability verification method of the highly integrated new driving unit according to the embodiment of the present application is first introduced.

[0055] Specifically, the performance verification system includes a measurement module, a control module, a simulation module, a fixed bracket, a road load simulation platform arranged on the fixed bracket, a drum vertical loading system, a wheel load dynamic loading mechanism and an electrical system.

[0056] In one embodiment of the present application, a performance verification system, such as Figure 1 As shown, Figure 1 This is a schematic diagram of a performance verification system proposed in an embodiment of the present application.

[0057] The performance verification system includes: a fixed bracket 1, a wheel vertical load dynamic loading mechanism 2, a flat belt road load simulation platform 4, a drum vertical loading system and an electrical system 5. The suspension connection point of the highly integrated new travel unit 3 is connected to the fixed bracket 1 and placed on the flat belt road load simulation platform 4. The flat belt road load simulation platform 4, the wheel vertical load dynamic loading mechanism 2 and the drum vertical loading system 5 are installed on the fixed bracket 1.

[0058] Among them, the flat belt road load simulation platform 4 specifically includes: a drum motor, a water cooler, an encoder, a hydraulic tensioning system, a tension pressure sensor, a torque sensor, and a drum flat belt with a simulated test field Belgian road, cobblestone road and other reinforced durable roads and speed bumps, curbs and other impact road paving surfaces. Covering passenger car tire specifications. In the actual implementation process, the flat belt road load simulation platform 4 can simulate the movement state of the wheel and the actual road surface, and adjust the friction coefficient of the simulated road surface according to the test requirements; the flat belt is equipped with simulated bumps of different sizes to simulate the special road conditions such as the raised reinforced durable road surface, speed bumps and curbs in the automobile test field; the load power motor is equipped with an independent cooling system.

[0059] The drum vertical loading system 5 specifically includes: an electric cylinder, a tension and pressure sensor, a support system, a linear bearing and a vertical road surface vibration loading gravity balance device. In the actual implementation process, the drum vertical loading system 5 can simulate the vertical impact of a pothole-type road surface on a highly integrated new driving unit, thereby releasing the vertical freedom of the road surface.

[0060] The wheel vertical load dynamic loading mechanism 2 specifically includes: a screw, a linear guide, a reducer, a force sensor and a loading servo motor. In the actual implementation process, the wheel vertical load dynamic loading mechanism 2 can simulate the wheel load changes of the highly integrated new driving unit during driving on uneven roads and release the vertical degree of freedom on the spring.

[0061] The electrical system specifically includes: frequency conversion cabinet, control system, distribution cabinet electrical parts, industrial computer, UPS power supply and control software, etc. Figure 2 shown.

[0062] In the embodiment of the present application, the measurement module of the durability and reliability verification equipment of the highly integrated new travel unit is equipped with a wheel speed sensor, a vertical load measurement sensor and a data acquisition system, and the measurement range includes: test environment temperature: -40℃-+40℃; force measurement accuracy: ±1.5% of the full scale of vertical load or braking force; speed measurement accuracy: ±1.0km / h or ±1.5% of the full scale, whichever is greater. Among them, (1) the speed test device, during the test, the vehicle speed is directly displayed and recorded by the wheel speed encoder; (2) the vertical load measurement device, based on the vertical load measurement device, the vertical load of the highly integrated new travel unit during movement is tested in real time. (3) The data acquisition system supports the input and sampling resolution of various signal types of all the aforementioned sensors, including: the minimum corresponding frequency within 1% of the full scale is 0Hz-100Hz; the minimum sampling frequency of the digital signal is 100Hz, and the load, longitudinal force, speed, lateral force, rotational torque and other parameters are recorded simultaneously; the operating status information of the load motor, cooling system, and safety device is collected; the environmental information of the test sample during operation is collected, including ambient temperature, humidity, etc.; all detection elements are subjected to vibration, acceleration and changes in ambient temperature.

[0063] In the embodiment of the present application, the control module of the highly integrated new driving unit durability and reliability verification equipment includes: (1) a real-time hardware controller equipped for real-time operation, monitoring, and control of the safe and effective operation of the test platform; (2) control software for setting system parameters through the control software according to test needs, recording and replaying test process data; (3) a response unit for real-time response and processing and prompting when a system failure occurs, and providing detailed information about the failure; (4) a communication unit for communicating with external devices through Ethernet (TCP / IP, UDP), CAN, etc., outputting data including vehicle speed, acceleration, driving / braking force and other parameters, and receiving input information from external devices including vehicle speed, driving / braking force, etc.; (5) a power supply unit, configured with a UPS power supply for computer use, with a UPS monitoring function, and automatically stopping the test when a power failure occurs; (6) the external device obtains the current operating status of the device in real time and performs parameter configuration.

[0064] It should be noted that other performance parameters of the highly integrated new travel unit durability and reliability verification equipment of the embodiment of the present application can be shown in Table 1:

[0065] Table 1

[0066]

[0067]

[0068] The highly integrated new driving unit durability and reliability verification equipment of the embodiment of the present application is combined with a battery simulator, an environmental chamber, a real-time simulation system and multi-physics digital modeling simulation software to form a test system topology diagram as shown below: Figure 3 As shown, durability reliability tests of highly integrated new driving units under the boundary conditions of test field road tests, durability reliability tests of new driving units under combined temperature loads, impact resistance tests of new driving units and in-loop vehicle smoothness simulation tests of new driving units can be carried out.

[0069] Specifically, Figure 4 A schematic flow chart of a durability reliability verification method for a highly integrated novel driving unit provided in an embodiment of the present application.

[0070] like Figure 4 As shown, the durability reliability verification method of the highly integrated new driving unit includes the following steps:

[0071] In step S101, the current test requirements of the highly integrated new driving unit to be tested are obtained.

[0072] Among them, the current test requirements refer to the specific functional or performance test items and their related test conditions and objectives that need to be carried out on the highly integrated new driving unit in the current test task.

[0073] Specifically, the current test requirements of the embodiments of the present application include: a first performance test under the boundary conditions of a test field road test, a second performance test combined with a temperature load, and at least one of an impact resistance test and a smoothness test.

[0074] In step S102, control parameters of the control module, simulation parameters of the simulation module, simulation parameters of the road load simulation platform, first loading parameters of the vertical loading system of the drum, second loading parameters of the dynamic loading mechanism of the wheel load and electrical parameters of the electrical system are determined according to the current test requirements.

[0075] It is understandable that when conducting vehicle testing, the parameters of each module need to be determined to ensure the accuracy and effectiveness of the test. Control parameters are used to control and adjust the working state of the test equipment according to the current test requirements; simulation parameters are used to build a specific simulation environment according to the current test requirements; simulation parameters are used to simulate the road conditions that the vehicle may encounter on the actual road according to the current test requirements; the first loading parameter is used to simulate the vertical impact of pothole-type roads on the highly integrated new travel unit according to the current test requirements; the second loading parameter is used to simulate the wheel load changes of the highly integrated new travel unit during driving on uneven roads according to the current test requirements, and the electrical parameters are used to adjust the electrical state of the electrical module according to the current test requirements.

[0076] During the actual implementation process, the simulation parameters may include the friction coefficient, slope, turning radius, etc. of different road surfaces to simulate the driving load of the vehicle under different road conditions; the first loading parameter may refer to the magnitude and distribution of the vertical force when simulating the static or dynamic load of the vehicle in the drum test; the second loading parameter may include the magnitude, direction and rate of change of the loaded force.

[0077] In step S103, based on the simulation parameters, simulation parameters, first loading parameters, second loading parameters and electrical parameters, the simulation module, the road load simulation platform, the drum vertical loading system, the wheel load dynamic loading mechanism and the electrical system are controlled to be in corresponding states respectively, and the control module is used to send the control parameters to the highly integrated new travel unit to be tested, and the measurement module is used to measure the current test parameters of the highly integrated new travel unit to be tested, and the performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters.

[0078] Among them, the performance test results include the durability and reliability of the highly integrated new driving unit.

[0079] Specifically, the embodiments of the present application can place the simulation module, road load simulation platform, drum vertical loading system, wheel load dynamic loading mechanism and electrical system in corresponding states according to current test requirements, and start and adjust each system in the test process through the control module, and use the measurement module to monitor and record the current test parameters of the highly integrated new travel unit to be tested in real time, and analyze the performance test results of the highly integrated new travel unit to be tested based on the data collected by the measurement module.

[0080] After obtaining the performance test results of the highly integrated new driving unit to be tested, they can be fed back to the simulation module, road load simulation platform, drum vertical loading system, wheel load dynamic loading mechanism and various modules in the electrical system, and adjusted to optimize the test conditions or improve the design of the driving unit. Finally, a detailed test report is generated, including test conditions, test data, performance analysis and improvement suggestions, providing a basis for subsequent design optimization and product development.

[0081] Optionally, in some embodiments, when the current test requirement is a first performance test under the boundary conditions of a test field road test, a measurement module is used to measure current test parameters of the highly-integrated new type of driving unit to be tested, and a performance test result of the highly-integrated new type of driving unit to be tested is obtained based on the current test parameters, including: after inputting a first wheel slip angle and a first driving torque into the highly-integrated new type of driving unit to be tested, the measurement module is used to measure the first performance parameter of the highly-integrated new type of driving unit to be tested, wherein the first wheel slip angle and the first driving torque are obtained by building a test field simulation environment and simulating the test environment by a simulation module; and the first performance test result under the boundary conditions of the test field road test is obtained based on the first performance parameter.

[0082] The first performance parameter includes at least one of suspension load, longitudinal force, lateral force and rotational moment.

[0083] Here, the durability reliability test of the highly integrated new driving unit under the boundary conditions of the test field road test is introduced.

[0084] Specifically, the embodiment of the present application establishes a virtual durability test field simulation environment for a whole vehicle equipped with a highly integrated new driving unit based on multi-physics digital modeling and simulation software, calculates the slip angle and driving torque of the wheel when driving on various reinforced durable roads, provides simulated on-board power for the highly integrated new driving unit prototype through a battery simulator, assembles a drum flat belt with a simulated test field reinforced durable road paving surface for the flat belt road load simulation platform, inputs the calculated corresponding wheel slip angle and driving torque into the equipment control system, outputs parameters such as suspension load, longitudinal force, lateral force, and rotational torque, records damage problems such as crack development, and counts various types of failures that occur during the test to verify the durability and reliability of the highly integrated new driving unit.

[0085] Optionally, in some embodiments, when the current test requirement is a second performance test combined with a temperature load, a measurement module is used to measure current test parameters of the highly integrated new driving unit to be tested, and performance test results of the highly integrated new driving unit to be tested are obtained based on the current test parameters, including: based on multiple test temperatures and multiple vehicle driving simulation conditions, after the second wheel slip angle and the second driving torque are input into the highly integrated new driving unit to be tested, the measurement module is used to measure the second performance parameters of the highly integrated new driving unit to be tested, wherein the second wheel slip angle and the second driving torque are obtained by simulating a test field simulation environment built by the simulation module; and the second performance test results combined with the temperature load under the test field road test boundary conditions are obtained based on the second performance parameters.

[0086] Specifically, based on the durability and reliability test method of the highly integrated new traveling unit under the boundary conditions of the road test in the test field, the test environment temperature is controlled through the environmental chamber, and the durability and reliability tests of the new traveling unit under extreme cold, extreme heat and temperature shock and road excitation, and driving conditions are carried out. The parameters such as suspension load, longitudinal force, lateral force, and rotational torque are output, and damage problems such as crack development are recorded. The various types of failures that occur during the test are counted to verify the comprehensive durability and reliability of the highly integrated new traveling unit.

[0087] Optionally, in some embodiments, when the current test requirement is an impact resistance test, a measurement module is used to measure current test parameters of the highly integrated new traveling unit to be tested, and a performance test result of the highly integrated new traveling unit to be tested is obtained according to the current test parameters, including: determining multiple target vehicle speeds and multiple target vehicle sideslip angles, and based on multiple road conditions, inputting the multiple target vehicle speeds and multiple target vehicle sideslip angles into the highly integrated new traveling unit to be tested, and using the measurement module to measure a third performance parameter of the highly integrated new traveling unit to be tested under multiple road conditions, and multiple target vehicle speeds and multiple target vehicle sideslip angles, wherein the third performance parameter includes at least one of suspension load, longitudinal force, lateral force, and rotational torque; and obtaining the impact resistance test result according to the third performance parameter.

[0088] Specifically, the embodiments of the present application use a battery simulator to provide a simulated on-board power supply for a highly integrated new travel unit prototype, equip a flat belt with a rotating drum that simulates speed bumps and curbs for a flat belt road load simulation platform, or use a rotating drum vertical loading system to apply vertical displacement to the flat belt road load simulation platform to simulate a pothole-type road surface. The prototype travels at a certain speed and a certain wheel slip angle through a simulated bump-type and pothole-type impact road, outputs parameters such as suspension load, records damage problems such as cracking, and counts various types of failures that occur during the test to verify the impact resistance of the highly integrated new travel unit.

[0089] Optionally, in some embodiments, when the current test requirement is a smoothness test, the measurement module is used to measure the current test parameters of the highly integrated new traveling unit to be tested, and the performance test results of the highly integrated new traveling unit to be tested are obtained according to the current test parameters, including: based on a preset hardware-in-the-loop simulation test environment, using the measurement module to measure the key parameters of the suspension load of the highly integrated new traveling unit to be tested; feeding back the key parameters of the suspension load of the highly integrated new traveling unit to be tested to the dynamics control system to obtain the vehicle seat position acceleration; based on the vehicle seat position acceleration, obtaining the smoothness test result of the highly integrated new traveling unit to be tested.

[0090] Specifically, the embodiments of the present application use a battery simulator to provide a simulated on-board power supply for a highly integrated new driving unit prototype, establish a vehicle dynamics model based on multi-physics digital modeling simulation software, and form a prototype hardware-in-the-loop simulation test environment in combination with a real-time simulation system. A flat belt with simulated speed bumps and curbs is installed on the flat belt road load simulation platform, or a vertical displacement is applied to the flat belt road load simulation platform through a drum vertical loading system to simulate a pothole-type road surface. A vehicle smoothness simulation test is carried out according to relevant test standards. The key parameters of the suspension load of the prototype are measured by the equipment and fed back to the vehicle dynamics control system to form a closed-loop control, and parameters such as the seat position acceleration of the vehicle are output to verify the effectiveness of the vehicle smoothness control.

[0091] In summary, the embodiment of the present application designs a high-end equipment composed of a fixed bracket, a flat-belt road load simulation platform, a drum vertical loading system, a wheel vertical load dynamic loading mechanism and an electrical system, which is combined with a battery simulator, an environmental chamber, a real-time simulation system and multi-physics digital modeling simulation software. The performance verification system can carry out durability and reliability tests of highly integrated new driving units under the boundary conditions of test field road tests, durability and reliability tests of highly integrated new driving units under combined temperature loads, impact resistance tests of highly integrated new driving units and in-loop vehicle smoothness simulation tests of highly integrated new driving units, providing support for product optimization and upgrading, saving vehicle model development funds and time costs, and shortening the R&D cycle.

[0092] According to the durability and reliability verification method of the highly integrated new driving unit proposed in the embodiment of the present application, the current test requirements of the highly integrated new driving unit to be tested are obtained, and the control parameters of the control module, the simulation parameters of the simulation module, the simulation parameters of the road load simulation platform, the first loading parameters of the drum vertical loading system, the second loading parameters of the wheel load dynamic loading mechanism and the electrical parameters of the electrical system are determined according to the current test requirements, and based on the simulation parameters, the simulation parameters, the first loading parameters, the second loading parameters and the electrical parameters, the simulation module, the road load simulation platform, the drum vertical loading system, the wheel load dynamic loading mechanism and the electrical system are respectively controlled to be in corresponding states, and the control module is used to send the control parameters to the highly integrated new driving unit to be tested, and the measurement module is used to measure the current test parameters of the highly integrated new driving unit to be tested, and the performance test results of the highly integrated new driving unit to be tested are obtained according to the current test parameters. Thus, the problem that the relevant technology cannot effectively carry out the durability and reliability verification of the highly integrated new driving unit under the simulated vehicle use conditions and environment on the test bench, and the test cost is high and the risk factor is high can be solved, and the development funds and time costs can be saved, and the research and development cycle can be shortened.

[0093] Next, a highly integrated novel driving unit durability reliability verification device proposed according to an embodiment of the present application will be described with reference to the accompanying drawings.

[0094] Figure 5 It is a block diagram of a highly integrated new type of driving unit durability reliability verification device according to an embodiment of the present application.

[0095] like Figure 5 As shown, the highly integrated new travel unit durability and reliability verification device 10 adopts a performance verification system, which includes a measurement module, a control module, a simulation module, a fixed bracket, a road load simulation platform arranged on the fixed bracket, a drum vertical loading system, a wheel load dynamic loading mechanism and an electrical system, wherein the highly integrated new travel unit durability and reliability verification device 10 includes: an acquisition module 100, a determination module 200 and a test module 300.

[0096] The acquisition module 100 is used to acquire the current test requirements of the highly integrated new driving unit to be tested.

[0097] Determination module 200 is used to determine the control parameters of the control module, the simulation parameters of the simulation module, the simulation parameters of the road load simulation platform, the first loading parameters of the vertical loading system of the drum, the second loading parameters of the wheel load dynamic loading mechanism and the electrical parameters of the electrical system according to the current test requirements.

[0098] The test module 300 is used to control the simulation module, the road load simulation platform, the vertical loading system of the drum, the dynamic loading mechanism of the wheel load and the electrical system to be in corresponding states based on the simulation parameters, the simulation parameters, the first loading parameters, the second loading parameters and the electrical parameters, and use the control module to send the control parameters to the highly integrated new travel unit to be tested, and use the measurement module to measure the current test parameters of the highly integrated new travel unit to be tested, and obtain the performance test results of the highly integrated new travel unit to be tested according to the current test parameters.

[0099] Optionally, in some embodiments, the current test requirement includes: at least one of a first performance test under a test field road test boundary condition, a second performance test combined with a temperature load, an impact resistance test, and a ride comfort test.

[0100] Optionally, in some embodiments, when the current test requirement is a first performance test under a test field road test boundary condition, the test module 300 includes: a first input unit and a first generation unit.

[0101] Among them, the first input unit is used to measure the first performance parameter of the highly integrated new driving unit to be tested by using the measurement module after the first wheel slip angle and the first driving torque are input into the highly integrated new driving unit to be tested, wherein the first wheel slip angle and the first driving torque are obtained by simulating the test field simulation environment built by the simulation module.

[0102] The first generating unit is used to obtain a first performance test result under a test field road test boundary condition according to a first performance parameter.

[0103] Optionally, in some embodiments, when the current test requirement is a second performance test combined with a temperature load, the test module 300 includes: a second input module and a second generation unit.

[0104] Among them, the second input module is used to input the second wheel slip angle and the second driving torque into the highly integrated new driving unit to be tested based on multiple test temperatures and multiple vehicle driving simulation conditions, and then use the measurement module to measure the second performance parameter of the highly integrated new driving unit to be tested, wherein the second wheel slip angle and the second driving torque are obtained by building a test field simulation environment and performing simulation by the simulation module.

[0105] The second generating unit is used to obtain a second performance test result combined with a temperature load under a test field road test boundary condition according to a second performance parameter.

[0106] Optionally, in some embodiments, when the current test requirement is an impact resistance test, the test module 300 includes: a third input unit and a third generation unit.

[0107] Among them, the third input unit is used to determine multiple target vehicle speeds and multiple target vehicle sideslip angles, and based on multiple road conditions, the multiple target vehicle speeds and multiple target vehicle sideslip angles are input into the highly integrated new driving unit to be tested, and the measurement module is used to measure the third performance parameter of the highly integrated new driving unit to be tested under multiple road conditions, multiple target vehicle speeds and multiple target vehicle sideslip angles, wherein the third performance parameter includes at least one of suspension load, longitudinal force, lateral force, and rotational moment.

[0108] The third generating unit is used to obtain an impact resistance test result according to the third performance parameter.

[0109] Optionally, in some embodiments, when the current test requirement is a ride comfort test, the test module 300 includes: a measurement unit, a feedback unit and a fourth generation unit.

[0110] Among them, the measurement unit is used to measure the key parameters of the suspension load of the highly integrated new driving unit to be tested based on the preset hardware-in-the-loop simulation test environment using the measurement module.

[0111] The feedback unit is used to feed back the key parameters of the suspension load of the highly integrated new driving unit to be tested to the dynamic control system to obtain the vehicle seat position acceleration.

[0112] The fourth generating unit is used to obtain a smoothness test result of the highly integrated new type of traveling unit to be tested based on the vehicle seat position acceleration.

[0113] It should be noted that the above explanation of the embodiment of the durability reliability verification method of the highly integrated new driving unit is also applicable to the durability reliability verification device of the highly integrated new driving unit of this embodiment, and will not be repeated here.

[0114] According to the durability and reliability verification device of the highly integrated new driving unit proposed in the embodiment of the present application, by obtaining the current test requirements of the highly integrated new driving unit to be tested, and determining the control parameters of the control module, the simulation parameters of the simulation module, the simulation parameters of the road load simulation platform, the first loading parameters of the drum vertical loading system, the second loading parameters of the wheel load dynamic loading mechanism and the electrical parameters of the electrical system according to the current test requirements, and based on the simulation parameters, the simulation parameters, the first loading parameters, the second loading parameters and the electrical parameters, respectively control the simulation module, the road load simulation platform, the drum vertical loading system, the wheel load dynamic loading mechanism and the electrical system to be in corresponding states, and use the control module to send the control parameters to the highly integrated new driving unit to be tested, and use the measurement module to measure the current test parameters of the highly integrated new driving unit to be tested, and obtain the performance test results of the highly integrated new driving unit to be tested according to the current test parameters. Thus, the problem that the relevant technology cannot effectively carry out the durability and reliability verification of the highly integrated new driving unit under the simulated vehicle use conditions and environment on the test bench, and the test cost is high and the risk factor is high can be solved, and development funds and time costs can be saved, and the research and development cycle can be shortened.

[0115] Figure 6 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. The electronic device may include:

[0116] A memory 601 , a processor 602 , and a computer program stored in the memory 601 and executable on the processor 602 .

[0117] When the processor 602 executes the program, the durability reliability verification method of the highly integrated new driving unit provided in the above embodiment is implemented.

[0118] Furthermore, the electronic device further comprises:

[0119] The communication interface 603 is used for communication between the memory 601 and the processor 602 .

[0120] The memory 601 is used to store computer programs that can be executed on the processor 602 .

[0121] The memory 601 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0122] If the memory 601, the processor 602 and the communication interface 603 are implemented independently, the communication interface 603, the memory 601 and the processor 602 can be connected to each other through a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 6 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0123] Optionally, in a specific implementation, if the memory 601, the processor 602 and the communication interface 603 are integrated on a chip, the memory 601, the processor 602 and the communication interface 603 can communicate with each other through an internal interface.

[0124] The processor 602 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present application.

[0125] An embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned method for verifying the durability and reliability of a highly integrated new type of driving unit.

[0126] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or N embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0127] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0128] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, fragment or portion of code comprising one or more executable instructions for implementing the steps of a custom logical function or process, and the scope of the preferred embodiments of the present application includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in reverse order depending on the functions involved, which should be understood by technicians in the technical field to which the embodiments of the present application belong.

[0129] It should be understood that the various parts of the present application can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiment, the N steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array, a field programmable gate array, etc.

[0130] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0131] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.

Claims

1. A durability reliability verification method for a highly integrated new type of driving unit, characterized in that: The method adopts a performance verification system, which includes a measurement module, a control module, a simulation module, a fixed bracket, a road load simulation platform arranged on the fixed bracket, a drum vertical loading system, a wheel load dynamic loading mechanism and an electrical system, wherein the method includes the following steps: Obtain the current test requirements of the highly integrated new driving unit to be tested; Determining, according to the current test requirements, control parameters of the control module, simulation parameters of the simulation module, simulation parameters of the road load simulation platform, first loading parameters of the drum vertical loading system, second loading parameters of the wheel load dynamic loading mechanism, and electrical parameters of the electrical system; Based on the simulation parameters, the simulation parameters, the first loading parameters, the second loading parameters and the electrical parameters, the simulation module, the road load simulation platform, the drum vertical loading system, the wheel load dynamic loading mechanism and the electrical system are respectively controlled to be in corresponding states, and the control module is used to send the control parameters to the highly integrated new type of driving unit to be tested, and the measurement module is used to measure the current test parameters of the highly integrated new type of driving unit to be tested, and the performance test results of the highly integrated new type of driving unit to be tested are obtained according to the current test parameters.

2. The method according to claim 1, characterized in that The current test requirements include: at least one of a first performance test under the boundary conditions of a test field road test, a second performance test combined with a temperature load, an impact resistance test, and a smoothness test.

3. The method according to claim 2, characterized in that When the current test requirement is the first performance test under the boundary conditions of the test field road test, the current test parameters of the highly integrated new driving unit to be tested are measured by the measurement module, and the performance test results of the highly integrated new driving unit to be tested are obtained according to the current test parameters, including: After inputting the first wheel slip angle and the first driving torque into the highly integrated new travel unit to be tested, using the measuring module to measure a first performance parameter of the highly integrated new travel unit to be tested, wherein the first wheel slip angle and the first driving torque are obtained by simulating a test field simulation environment built by the simulation module; A first performance test result under the test field road test boundary conditions is obtained according to the first performance parameter.

4. The method according to claim 2, characterized in that: When the current test requirement is the second performance test combined with the temperature load, measuring the current test parameters of the to-be-tested highly integrated novel travel unit by using the measurement module, and obtaining the performance test results of the to-be-tested highly integrated novel travel unit according to the current test parameters, includes: Based on multiple test temperatures and multiple vehicle driving simulation conditions, after inputting the second wheel slip angle and the second driving torque into the highly integrated new driving unit to be tested, the second performance parameter of the highly integrated new driving unit to be tested is measured by using the measuring module, wherein the second wheel slip angle and the second driving torque are obtained by simulating a test field simulation environment built by the simulation module; A second performance test result combined with a temperature load under a test field road test boundary condition is obtained according to the second performance parameter.

5. The method according to claim 2, characterized in that: When the current test requirement is the impact resistance test, the current test parameters of the highly integrated new travel unit to be tested are measured by the measurement module, and the performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters, including: Determine a plurality of target vehicle speeds and a plurality of target vehicle sideslip angles, input the plurality of target vehicle speeds and the plurality of target vehicle sideslip angles into the highly integrated new driving unit to be tested based on a plurality of road conditions, and use the measurement module to measure a third performance parameter of the highly integrated new driving unit to be tested under a plurality of road conditions, and the plurality of target vehicle speeds and the plurality of target vehicle sideslip angles, wherein the third performance parameter comprises at least one of a suspension load, a longitudinal force, a lateral force, and a turning moment; An impact resistance test result is obtained according to the third performance parameter.

6. The method according to claim 2, characterized in that When the current test requirement is the ride comfort test, measuring the current test parameters of the to-be-tested highly integrated novel travel unit by using the measurement module, and obtaining the performance test results of the to-be-tested highly integrated novel travel unit according to the current test parameters, includes: Based on a preset hardware-in-the-loop simulation test environment, the measurement module is used to measure the key parameters of the suspension load of the highly integrated new travel unit to be tested; Feeding back the key parameters of the suspension load of the highly integrated new travel unit to be tested to the dynamics control system to obtain the vehicle seat position acceleration; Based on the vehicle seat position acceleration, a smoothness test result of the highly integrated new type of traveling unit to be tested is obtained.

7. A highly integrated new type of driving unit durability reliability verification device, characterized in that: The device adopts a performance verification system, which includes a measurement module, a control module, a simulation module, a fixed bracket, a road load simulation platform arranged on the fixed bracket, a drum vertical loading system, a wheel load dynamic loading mechanism and an electrical system, wherein the device includes: An acquisition module is used to obtain the current test requirements of the highly integrated new driving unit to be tested; a determination module, for determining, according to the current test requirements, control parameters of the control module, simulation parameters of the simulation module, simulation parameters of the road load simulation platform, first loading parameters of the drum vertical loading system, second loading parameters of the wheel load dynamic loading mechanism, and electrical parameters of the electrical system; A test module is used to control the simulation module, the road load simulation platform, the drum vertical loading system, the wheel load dynamic loading mechanism and the electrical system to be in corresponding states based on the simulation parameters, the simulation parameters, the first loading parameters, the second loading parameters and the electrical parameters, and use the control module to send the control parameters to the highly integrated new travel unit to be tested, and use the measurement module to measure the current test parameters of the highly integrated new travel unit to be tested, and obtain the performance test results of the highly integrated new travel unit to be tested according to the current test parameters.

8. The device according to claim 7, characterized in that The current test requirements include: at least one of a first performance test under the boundary conditions of a test field road test, a second performance test combined with a temperature load, an impact resistance test, and a smoothness test.

9. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the durability reliability verification method for a highly integrated new driving unit as described in any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the durability reliability verification method of a highly integrated new driving unit as described in any one of claims 1-6.

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