High-integration novel driving unit longitudinal performance test method, device and equipment

Abstract

The invention relates to a high-integration novel driving unit longitudinal performance test method, device and equipment. Comprising the steps of determining a control parameter of a control module, a first simulation parameter of a high-speed drum system, a second simulation parameter of a vertical loading system and an electrical parameter of an electrical system based on a current longitudinal performance test requirement of a to-be-tested high-integration novel driving unit; based on the first simulation parameter, the second simulation parameter and the electrical parameter, the corresponding states of the high-speed drum system, the vertical loading system and the electrical system are respectively controlled, the control parameter is sent to the to-be-tested high-integration novel driving unit by using the control module, the current test parameter of the to-be-tested high-integration novel driving unit is measured by using the measurement module, and the to-be-tested high-integration novel driving unit is tested. And obtaining a longitudinal performance test result of the to-be-tested high-integration novel driving unit according to the current test parameters. Therefore, the problem that the limit driving / braking performance verification of the high-integration novel driving unit cannot be effectively simulated on the rack under the whole vehicle use condition in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of highly integrated new-type running unit testing, and in particular to a method, device and equipment for testing the longitudinal performance of a highly integrated new-type running 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] In the relevant technologies, the industry lacks industrial-grade testing equipment and related testing methods for highly integrated new travel units under vehicle boundary conditions, which makes it impossible to effectively carry out the extreme driving / braking performance verification of highly integrated new travel units under simulated vehicle use conditions on the test bench. It can only be completed through road testing under vehicle loading conditions. The testing cost is high, the risk factor is high, the cycle is long, and the optimization and update are delayed. It is urgently needed to be completed. Summary of the invention

[0004] The present application provides a method, device and equipment for testing the longitudinal performance of a highly integrated new type of running unit, so as to solve the problem that the prior art cannot effectively simulate the extreme driving / braking performance verification of a highly integrated new type of running unit under the conditions of whole vehicle use on a test bench, thereby saving vehicle development funds and time costs, and shortening the research and development cycle.

[0005] To achieve the above-mentioned purpose, the first embodiment of the present application proposes a method for testing the longitudinal performance of a highly integrated new travel unit. The method adopts a longitudinal performance testing system. The longitudinal performance testing system includes a verification module, a measurement module and a control module. The verification module includes a fixed bracket, a high-speed drum system, a vertical loading system and an electrical system. The suspension connection point of the highly integrated new travel unit is connected to the fixed bracket and placed on the high-speed drum system. The high-speed drum system and the vertical loading system are installed on the fixed bracket. The method includes the following steps:

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

[0007] Based on the current longitudinal performance test requirement, determining control parameters of the control module, first simulation parameters of the high-speed drum system, second simulation parameters of the vertical loading system, and electrical parameters of the electrical system;

[0008] Based on the first simulation parameter, the second simulation parameter and the electrical parameter, the corresponding states of the high-speed drum system, the vertical loading system and the electrical system are controlled 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 longitudinal performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters.

[0009] According to one embodiment of the present application, the current longitudinal performance test requirement includes at least one of a vehicle maximum speed and 100 km / h acceleration test, a braking energy recovery and efficiency test, and a continuous braking thermal decay test.

[0010] According to one embodiment of the present application, when the current longitudinal performance test requirement is the vehicle's maximum speed and 100 km / h acceleration test, 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 longitudinal performance test results of the highly integrated new type of driving unit to be tested are obtained according to the current test parameters, including: using the measurement module to measure the speed and braking force of the simulation prototype under different friction coefficients and different wheel loads, and reading the maximum speed value and 100 km / h acceleration time of the simulation prototype; according to the maximum speed value and the 100 km / h acceleration time, the longitudinal performance test results of the highly integrated new type of driving unit to be tested are obtained.

[0011] According to one embodiment of the present application, when the current longitudinal performance test requirement is the braking energy recovery and efficiency test, the measurement module is used to measure the current test parameters of the highly integrated new driving unit to be tested, and the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained according to the current test parameters, including: based on the preset braking driving conditions, using the measurement module to measure the power consumption and energy recovery of the simulated prototype during braking; based on the power consumption and energy recovery, the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained.

[0012] According to an embodiment of the present application, when the current longitudinal performance test requirement is the continuous braking thermal decay test, the current test parameters of the highly integrated new driving unit to be tested are measured by the measurement module, and the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained according to the current test parameters, including: based on a preset braking test cycle condition, the brake temperature, the drive motor temperature and the controller temperature in the highly integrated new driving unit to be tested are measured by the measurement module; when the brake temperature, the drive motor temperature and the controller temperature are all less than the corresponding preset thresholds, the braking force change trend of the highly integrated new driving unit to be tested is measured by the measurement module; based on the braking force change trend, it is determined whether the braking force of the highly integrated new driving unit to be tested is in a decay situation; when the braking force of the highly integrated new driving unit is in the decay situation, the braking force decay percentage is calculated, and the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained based on the braking force decay percentage.

[0013] According to the longitudinal performance test method of the highly integrated new travel unit proposed in the embodiment of the present application, the control parameters of the control module, the first simulation parameters of the high-speed drum system, the second simulation parameters of the vertical loading system and the electrical parameters of the electrical system are determined based on the current longitudinal performance test requirements of the highly integrated new travel unit to be tested; based on the first and second simulation parameters and the electrical parameters, the corresponding states of the high-speed drum system, the vertical loading system and the electrical system are controlled respectively, and the control module is used to send the control parameters to the highly integrated new travel unit to be tested, and the current test parameters of the highly integrated new travel unit to be tested are measured by the measurement module, and the longitudinal performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters. Thus, the problem that the existing technology cannot effectively simulate the extreme driving / braking performance verification of the highly integrated new travel unit under the use conditions of the whole vehicle on the test bench is solved, saving vehicle model development funds and time costs, and shortening the research and development cycle.

[0014] To achieve the above-mentioned purpose, the second embodiment of the present application proposes a highly integrated new travel unit longitudinal performance test device, the device adopts a longitudinal performance test system, the longitudinal performance test system includes a verification module, a measurement module and a control module, the verification module includes a fixed bracket, a high-speed drum system, a vertical loading system and an electrical system, the highly integrated new travel unit suspension connection point is connected to the fixed bracket and placed on the high-speed drum system, the high-speed drum system and the vertical loading system are installed on the fixed bracket, wherein the device includes:

[0015] An acquisition module is used to obtain the current longitudinal performance test requirements of the highly integrated new driving unit to be tested;

[0016] A determination module, configured to determine, based on the current longitudinal performance test requirement, a control parameter of the control module, a first simulation parameter of the high-speed drum system, a second simulation parameter of the vertical loading system, and an electrical parameter of the electrical system;

[0017] A test module is used to control the corresponding states of the high-speed drum system, the vertical loading system and the electrical system respectively based on the first simulation parameter, the second simulation parameter and the electrical parameter, 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 longitudinal performance test results of the highly integrated new travel unit to be tested according to the current test parameters.

[0018] According to one embodiment of the present application, the current longitudinal performance test requirement includes at least one of a vehicle maximum speed and 100 km / h acceleration test, a braking energy recovery and efficiency test, and a continuous braking thermal decay test.

[0019] According to an embodiment of the present application, when the current longitudinal performance test requirement is the vehicle limit speed and 100 km / h acceleration test, the test module is specifically used to:

[0020] The measuring module is used to measure the speed and braking force of the simulation prototype under different friction coefficients and different wheel loads, and the maximum vehicle speed and acceleration time per 100 kilometers of the simulation prototype are read;

[0021] According to the maximum vehicle speed value and the acceleration time per 100 kilometers, the longitudinal performance test result of the highly integrated new driving unit to be tested is obtained.

[0022] According to an embodiment of the present application, when the current longitudinal performance test requirement is the braking energy recovery and effectiveness test, the test module is specifically used to:

[0023] Based on a preset braking driving condition, the measurement module is used to measure the power consumption and energy recovery of the simulated prototype during braking;

[0024] Based on the power consumption and energy recovery conditions, the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained.

[0025] According to an embodiment of the present application, when the current longitudinal performance test requirement is the continuous braking thermal decay test, the test module is specifically used to:

[0026] Based on a preset braking test cycle condition, the measuring module is used to measure the brake temperature, the drive motor temperature and the controller temperature in the highly integrated new travel unit to be tested;

[0027] When the brake temperature, the drive motor temperature and the controller temperature are all lower than corresponding preset thresholds, using the measurement module to measure the braking force variation trend of the highly integrated new travel unit to be tested;

[0028] Based on the braking force variation trend, judging whether the braking force of the highly integrated novel driving unit to be tested is declining;

[0029] When the braking force of the highly integrated new travel unit is in the decay condition, the braking force decay percentage is calculated, and the longitudinal performance test result of the highly integrated new travel unit to be tested is obtained based on the braking force decay percentage.

[0030] According to the highly integrated new type of driving unit longitudinal performance test device proposed in the embodiment of the present application, the control parameters of the control module, the first simulation parameters of the high-speed drum system, the second simulation parameters of the vertical loading system and the electrical parameters of the electrical system are determined based on the current longitudinal performance test requirements of the highly integrated new type of driving unit to be tested; based on the first and second simulation parameters and the electrical parameters, the corresponding states of the high-speed drum system, the vertical loading system and the electrical system are controlled respectively, 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 current test parameters of the highly integrated new type of driving unit to be tested are measured by the measurement module, and the longitudinal performance test results of the highly integrated new type of driving unit to be tested are obtained according to the current test parameters. Thus, the problem that the existing technology cannot effectively simulate the extreme driving / braking performance verification of the highly integrated new type of driving unit under the use conditions of the whole vehicle on the test bench is solved, saving vehicle model development funds and time costs, and shortening the research and development cycle.

[0031] To achieve the above-mentioned objectives, the third aspect of the present application proposes 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 highly integrated new type of running unit longitudinal performance testing method as described in the above-mentioned embodiment.

[0032] To achieve the above objectives, the fourth aspect of the present application proposes a computer-readable storage medium on which a computer program is stored. The program is executed by a processor to implement the highly integrated new driving unit longitudinal performance testing method as described in the above embodiments.

[0033] To achieve the above objectives, the fifth aspect of the present application proposes a computer program product, which includes a computer program. When the computer program is executed by a processor, it is used to implement the highly integrated new driving unit longitudinal performance testing method as described in the above embodiments.

[0034] 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

[0035] 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:

[0036] Figure 1 It is a flow chart of a highly integrated novel driving unit longitudinal performance testing method provided according to an embodiment of the present application;

[0037] Figure 2 is a schematic diagram of the structure of a verification module according to an embodiment of the present application;

[0038] Figure 3 is a block diagram of an electrical system according to an embodiment of the present application;

[0039] Figure 4 is a block diagram of a longitudinal performance testing system according to an embodiment of the present application;

[0040] Figure 5 It is a block diagram of a highly integrated novel running unit longitudinal performance testing device provided according to an embodiment of the present application;

[0041] 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

[0042] The 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.

[0043] The following describes the longitudinal performance testing method, device and equipment of a highly integrated new type of running unit proposed according to the embodiments of the present application with reference to the accompanying drawings.

[0044] Figure 1 It is a flow chart of a method for testing longitudinal performance of a highly integrated novel running unit according to an embodiment of the present application.

[0045] The longitudinal performance test method of the highly integrated new driving unit adopts a longitudinal performance test system, which includes a verification module (i.e., a highly integrated new driving unit longitudinal performance verification device), a measurement module (i.e., a measurement device for the highly integrated new driving unit longitudinal performance verification device), and a control module (i.e., a control system for the highly integrated new driving unit longitudinal performance verification device). Figure 2 As shown, the verification module includes a fixed bracket 1, a high-speed drum system 2, a vertical loading system 3 and an electrical system. The highly integrated new travel unit suspension connection point 4 is connected to the fixed bracket 1 and placed on the high-speed drum system 2. The high-speed drum system 2 and the vertical loading system 3 are installed on the fixed bracket 1.

[0046] Specifically, the high-speed drum system 2 is a complex device, which mainly includes the following key components: a circular drum, a drum motor, a drum encoder, a drum reducer and a torque sensor. The system is designed to realistically simulate the motion state of the wheel on the actual road surface. By replacing different types of friction materials, the friction coefficient of the drum surface can be flexibly adjusted to simulate a variety of different road conditions. This flexibility makes the system highly practical when conducting vehicle testing and research. In addition, in order to ensure that the drum motor can remain stable during long-term operation, the system is specially equipped with an independent heat dissipation system. This heat dissipation system can effectively discharge the heat generated by the motor during operation, thereby avoiding performance degradation or damage due to overheating. Through this design, the drum motor can continue to work stably under high load conditions, ensuring the reliability and durability of the entire system.

[0047] The vertical loading system 3 is composed of key components such as servo motor, reducer, ball screw, linear guide, bearing, tensioner and single-component force sensor. Its main purpose is to simulate the performance of the highly integrated new travel unit under the spring loading condition. In this way, the braking capacity under different wheel load conditions can be accurately tested, thereby ensuring the safety and reliability of the highly integrated new travel unit in actual use.

[0048] The electrical system includes: UPS (Uninterruptible Power Supply), power distribution cabinet, industrial computer, inverter, electric control system and control software, etc. Figure 3As shown. Among them, the UPS power supply can provide short-term power support for the system in the event of a power outage in the power grid, ensuring the continuity of the test process and the integrity of the data. The power distribution cabinet is responsible for allocating and managing the power supply of the entire system to ensure that all components can work normally. The industrial computer, as the control center of the system, realizes precise control of the entire loading system by running the control software. The inverter has a four-quadrant operation function, which can not only drive the motor to run, but also feed back the energy recovered by the system during braking to the power grid, thereby improving the energy efficiency of the system.

[0049] The measurement module includes: (1) a drum speed sensor, a wheel speed sensor of the test piece, and a load measurement sensor for the test piece. The measuring range of the measurement system is specified as follows: the test environment temperature is 10℃-45℃; the force measurement accuracy is ±1.5% of the vertical load or braking force full scale; the speed measurement accuracy is ±1.0km / h or ±1.5% of the full scale, whichever is larger. (2) A speed test device. During the test, the vehicle speed can be directly displayed in real time through the wheel speed encoder and recorded synchronously. (3) A braking force measurement device. When measuring the longitudinal force of the tire and the test road surface, the braking force sensor has a range of 0%-125% of the vertical load requirement of the tire to be tested. The installation of the sensor must be carried out under the premise of ensuring that the inertial effect and mechanical resonance influence are minimized. (4) A vertical load measurement device. Based on the vertical load measurement device, the vertical load of the highly integrated new travel unit during movement can be tested in real time. (5) Data acquisition system. The data acquisition system supports the input and sampling resolution of various signal types of all the aforementioned sensors, and covers the following aspects: the minimum corresponding frequency within 1% of the full scale is 0 Hz-100 Hz; the minimum sampling frequency of the digital signal is 100 Hz, 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.

[0050] The control module covers the following functions: (1) configure the real-time hardware controller to ensure the safe and effective operation of the test platform and realize real-time operation, monitoring and control; (2) according to the test requirements, use the control software to set the system parameters, and record and replay the relevant data of the test process; (3) when the system fails, it can respond in real time and issue prompts, and provide detailed fault information; (4) exchange data with external devices through Ethernet (TCP / IP (Transmission Control Protocol / Internet Protocol), UDP (User Datagram Protocol), CAN (Controller Area Network) and other communication methods, and the output data includes vehicle speed, acceleration, driving / braking force and other parameters, and the received external device input information includes vehicle speed, driving force, braking force, etc.; (5) equip the computer with UPS power supply and UPS monitoring function to ensure that the test can be automatically terminated in the event of power failure; (6) allow external devices to obtain the current operating status of the device in real time and perform corresponding parameter configuration.

[0051] In addition, other parameter settings are shown in Table 1:

[0052] Table 1

[0053] Drum diameter 1700mm Maximum supported speed 300km / h Speed ​​control accuracy ≤1.0km / h Maximum loading force ≤700kg Loading displacement ±50mm Loading force measurement accuracy 0.1% FS Loading motion accuracy ±0.1mm Lateral movement speed range 0mm / s-30mm / s System supply voltage AC380V±10% System maximum power 400kW System operating temperature 10℃-40℃

[0054] The above longitudinal performance test system is combined with a battery simulator, such as Figure 4 As shown, it is possible to carry out simulated vehicle extreme speed and 100 km / h acceleration tests, brake energy recovery and efficiency tests, and continuous brake thermal decay tests of highly integrated new driving units, which can provide support for product optimization and upgrading, save vehicle development funds and time costs, and shorten the R&D cycle.

[0055] Next, the longitudinal performance testing method of this highly integrated new driving unit will be explained in detail.

[0056] For example, Figure 1 As shown, the highly integrated novel driving unit longitudinal performance test method comprises the following steps:

[0057] In step S101, the current longitudinal performance test requirement of the highly integrated new driving unit to be tested is obtained.

[0058] It is understandable that longitudinal performance mainly refers to the vehicle's motion performance in a straight line, including acceleration, braking, etc. Obtaining test requirements means clarifying which performance indicators need to be tested to ensure that the highly integrated new driving unit to be tested meets the design requirements or standards.

[0059] Among them, in some embodiments, the current longitudinal performance test requirements include at least one of the vehicle's maximum speed and 100 km / h acceleration test, brake energy recovery and efficiency test, and continuous brake thermal decay test.

[0060] That is to say, in the embodiment of the present application, the current longitudinal performance test requirements may cover the vehicle's maximum speed and 100-kilometer acceleration test, the brake energy recovery and efficiency test, and the continuous brake thermal decay test. Among them, the vehicle's maximum speed and 100-kilometer acceleration test is intended to evaluate the vehicle's performance at maximum speed and the time required to accelerate from a standstill to 100 kilometers per hour, thereby measuring the vehicle's power performance and acceleration capabilities. The brake energy recovery and efficiency test focuses on how much energy the vehicle can recover during braking, and evaluates the efficiency and performance of the energy recovery system. The continuous brake thermal decay test focuses on testing the thermal stability of the vehicle's braking system after multiple consecutive brakings to ensure that the braking efficiency will not decrease significantly under long-term and high-intensity use. These three tests together constitute a comprehensive evaluation of the vehicle's longitudinal performance to ensure the safety and reliability of the vehicle in actual use.

[0061] In step S102, based on the current longitudinal performance test requirements, control parameters of the control module, first simulation parameters of the high-speed drum system, second simulation parameters of the vertical loading system and electrical parameters of the electrical system are determined.

[0062] Specifically, after clarifying the current longitudinal performance test requirements, a series of key parameters need to be determined based on these requirements. These parameters include the control parameters of the control module, the simulation parameters of the high-speed drum system (i.e., the first simulation parameters), the simulation parameters of the vertical loading system (i.e., the second simulation parameters), and the electrical parameters of the electrical system. The control parameters of the control module will determine the behavior and response of the highly integrated new driving unit to be tested during the test, while the first simulation parameters of the high-speed drum system will simulate the road conditions of the highly integrated new driving unit to be tested when driving at high speed. The second simulation parameters of the vertical loading system are used to simulate the vertical load borne by the highly integrated new driving unit to be tested during actual driving, while the electrical parameters of the electrical system ensure the normal operation and data acquisition of the entire test system.

[0063] In step S103, based on the first simulation parameter, the second simulation parameter and the electrical parameter, the corresponding states of the high-speed drum system, the vertical loading system and the electrical system are controlled 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 longitudinal performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters.

[0064] Specifically, after determining these key parameters (first simulation parameter, second simulation parameter and electrical parameter), the high-speed drum system, vertical loading system and electrical system can be controlled respectively to make them in corresponding states. That is, the high-speed drum system needs to be adjusted to simulate the state of specific road conditions, the vertical loading system needs to be adjusted to simulate the state of the vertical load borne during actual driving, and the electrical system needs to be adjusted to ensure the accurate collection of test data. The control module can send corresponding control instructions to the highly integrated new driving unit to be tested according to the previously determined control parameters.

[0065] During the test, the measurement module can monitor and record the test parameters of the highly integrated new driving unit to be tested in real time, including but not limited to speed, acceleration, torque, current, voltage, etc. (specifically according to the current longitudinal performance test requirements). Through real-time monitoring of these parameters, the performance of the highly integrated new driving unit to be tested during the test can be accurately evaluated. Finally, based on the current test parameters collected by the measurement module and the current longitudinal performance test requirements, the longitudinal performance test results of the highly integrated new driving unit to be tested can be obtained. These results will provide important data support for evaluating the performance of the driving unit and provide a basis for further optimization and improvement.

[0066] The following will explain in detail how to obtain the longitudinal performance test results of the highly integrated new driving unit to be tested according to different longitudinal performance test requirements.

[0067] Optionally, in some embodiments, when the current longitudinal performance test requirement is the vehicle's maximum speed and 100 km / h acceleration test, the measurement module is used to measure the current test parameters of the highly integrated new driving unit to be tested, and the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained based on the current test parameters, including: using the measurement module to measure the speed and braking force of the simulated prototype under different friction coefficients and different wheel loads, and reading the maximum speed value and 100 km / h acceleration time of the simulated prototype; according to the maximum speed value and 100 km / h acceleration time, the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained.

[0068] Specifically, the battery simulator can provide a simulated on-board power supply for the highly integrated new driving unit simulation prototype to be tested. The simulated power supply can accurately reproduce the characteristics of the real vehicle power supply, thereby ensuring the accuracy of the test results. At the same time, the vertical loading system is used to provide accurate simulated wheel loads for the simulation prototype to ensure that the load of the simulation prototype during the test is similar to that of the actual vehicle. During the test, the simulation prototype is driven to accelerate from a stationary state, and the wheels will drive the high-speed drum system to rotate. The high-speed drum system can simulate the driving environment under actual road conditions and provide a stable and controllable test platform. The drum encoder can read the maximum speed that the simulation prototype can reach during driving, as well as the time required to accelerate from a stationary state to 100 kilometers per hour. The measurement module is then used to measure the speed and braking force of the simulation prototype under different friction coefficients and different wheel loads. These measurement data are crucial for evaluating the performance of the simulation prototype. Through the test, the maximum speed value and the acceleration time per 100 kilometers of the simulation prototype are read using the measurement module, so as to obtain the longitudinal performance test results of the highly integrated new driving unit to be tested under the longitudinal performance test requirements of the vehicle's maximum speed and 100-kilometer acceleration test.

[0069] Optionally, in some embodiments, when the current longitudinal performance test requirement is a braking energy recovery and efficiency test, a measurement module is used to measure current test parameters of the highly integrated new driving unit to be tested, and the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained according to the current test parameters, including: based on preset braking driving conditions, using the measurement module to measure the power consumption and energy recovery of the simulated prototype during braking; based on the power consumption and energy recovery, the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained.

[0070] Specifically, a battery simulator is used to provide a simulated on-board power supply for the highly integrated new driving unit simulation prototype to be tested, and the braking driving conditions (i.e., the preset braking driving conditions) are edited so that the actual driving conditions can be accurately simulated during the test, and the preset braking driving conditions are input into the control module for subsequent testing. After the test is started, the simulation prototype operates under the preset braking driving conditions, and the energy recovered during the braking process is fed back to the power grid through the inverter in the electrical system. This process can not only simulate the actual energy recovery situation, but also record the total amount of recovered electrical energy. The measurement module is then used to measure the power consumption and energy recovery of the simulation prototype during braking, thereby obtaining the longitudinal performance test results of the highly integrated new driving unit to be tested under the longitudinal performance test requirements of braking energy recovery and efficiency testing, so as to verify the effectiveness of the braking energy recovery algorithm of the highly integrated new driving unit to be tested.

[0071] Optionally, in some embodiments, when the current longitudinal performance test requirement is a continuous braking thermal decay test, the measurement module is used to measure the current test parameters of the highly integrated new driving unit to be tested, and the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained according to the current test parameters, including: based on the preset braking test cycle conditions, the measurement module is used to measure the brake temperature, drive motor temperature and controller temperature in the highly integrated new driving unit to be tested; when the brake temperature, drive motor temperature and controller temperature are all less than the corresponding preset thresholds, the measurement module is used to measure the braking force change trend of the highly integrated new driving unit to be tested; based on the braking force change trend, it is determined whether the braking force of the highly integrated new driving unit to be tested is decaying; when the braking force of the highly integrated new driving unit is decaying, the braking force decay percentage is calculated, and the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained based on the braking force decay percentage.

[0072] Specifically, a battery simulator is used to provide a simulated on-board power supply for the simulated prototype of the highly integrated new driving unit to be tested, and a braking test cycle condition (i.e., a preset braking test cycle condition) is edited to simulate the braking situation in actual driving. The preset braking test cycle condition is input into the control module so that the subsequent testing work can proceed smoothly. After the test is started, the measurement module is used to record the temperature of each key component in the highly integrated new driving unit to be tested in real time, including the temperature of the brake, drive motor and controller. In order to ensure the safety and accuracy of the test, it is necessary to ensure that the temperature of these components is always kept below the preset safety threshold. Only when the brake temperature, drive motor temperature and controller temperature are all less than the corresponding preset thresholds can the next step of the test be continued. When the temperature conditions are met, the measurement module is used to monitor the braking force change trend of the highly integrated new driving unit to be tested. By analyzing these data, it can be determined whether the braking force of the highly integrated new driving unit to be tested is declining. If it is found that the braking force is indeed declining, the percentage of braking force decline can be further calculated. This percentage is an important indicator to measure the degree of performance decline of the highly integrated new driving unit to be tested. Finally, based on the calculated braking force decay percentage, the longitudinal performance test result of the highly integrated new travel unit to be tested under the longitudinal performance test requirement of continuous braking thermal decay test can be obtained.

[0073] According to the longitudinal performance test method of the highly integrated new travel unit proposed in the embodiment of the present application, the control parameters of the control module, the first simulation parameters of the high-speed drum system, the second simulation parameters of the vertical loading system and the electrical parameters of the electrical system are determined based on the current longitudinal performance test requirements of the highly integrated new travel unit to be tested; based on the first and second simulation parameters and the electrical parameters, the corresponding states of the high-speed drum system, the vertical loading system and the electrical system are controlled respectively, and the control module is used to send the control parameters to the highly integrated new travel unit to be tested, and the current test parameters of the highly integrated new travel unit to be tested are measured by the measurement module, and the longitudinal performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters. Thus, the problem that the existing technology cannot effectively simulate the extreme driving / braking performance verification of the highly integrated new travel unit under the use conditions of the whole vehicle on the test bench is solved, saving vehicle model development funds and time costs, and shortening the research and development cycle.

[0074] Next, a highly integrated novel running unit longitudinal performance testing device proposed in accordance with an embodiment of the present application will be described with reference to the accompanying drawings.

[0075] Figure 5 It is a block diagram of a highly integrated new type of longitudinal performance test device for a running unit according to an embodiment of the present application. The highly integrated new type of longitudinal performance test device for a running unit adopts a longitudinal performance test system, which includes a verification module, a measurement module and a control module. The verification module includes a fixed bracket, a high-speed drum system, a vertical loading system and an electrical system. The highly integrated new type of running unit suspension connection point is connected to the fixed bracket and placed on the high-speed drum system. The high-speed drum system and the vertical loading system are installed on the fixed bracket.

[0076] like Figure 5 As shown, the highly integrated novel driving unit longitudinal performance testing device 10 includes: an acquisition module 100 , a determination module 200 and a testing module 300 .

[0077] The acquisition module 100 is used to acquire the current longitudinal performance test requirements of the highly integrated new driving unit to be tested;

[0078] A determination module 200, for determining control parameters of the control module, first simulation parameters of the high-speed drum system, second simulation parameters of the vertical loading system, and electrical parameters of the electrical system based on current longitudinal performance test requirements;

[0079] The test module 300 is used to control the corresponding states of the high-speed drum system, the vertical loading system and the electrical system respectively based on the first simulation parameter, the second simulation parameter and the electrical parameter, 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 longitudinal performance test results of the highly integrated new travel unit to be tested according to the current test parameters.

[0080] Furthermore, in some embodiments, the current longitudinal performance test requirements include at least one of a vehicle maximum speed and 100 km / h acceleration test, a brake energy recovery and effectiveness test, and a continuous brake thermal decay test.

[0081] Further, in some embodiments, when the current longitudinal performance test requirement is the vehicle limit speed and 100 km / h acceleration test, the test module 300 is specifically used to:

[0082] Use the measurement module to measure the speed and braking force of the simulation prototype under different friction coefficients and different wheel loads, and read the maximum speed value and acceleration time of the simulation prototype;

[0083] According to the maximum vehicle speed value and the acceleration time per 100 kilometers per hour, the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained.

[0084] Further, in some embodiments, when the current longitudinal performance test requirement is a braking energy recovery and effectiveness test, the test module 300 is specifically used to:

[0085] Based on the preset braking driving conditions, the measurement module is used to measure the power consumption and energy recovery of the simulated prototype during braking;

[0086] Based on the power consumption and energy recovery, the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained.

[0087] Further, in some embodiments, when the current longitudinal performance test requirement is a continuous brake thermal decay test, the test module 300 is specifically configured to:

[0088] Based on the preset braking test cycle conditions, the measurement module is used to measure the brake temperature, drive motor temperature and controller temperature in the highly integrated new driving unit to be tested;

[0089] When the brake temperature, the drive motor temperature and the controller temperature are all lower than the corresponding preset thresholds, the measurement module is used to measure the braking force change trend of the highly integrated new driving unit to be tested;

[0090] Based on the braking force change trend, determine whether the braking force of the highly integrated new driving unit to be tested is declining;

[0091] When the braking force of the highly integrated new travel unit is attenuated, the braking force attenuation percentage is calculated, and the longitudinal performance test result of the highly integrated new travel unit to be tested is obtained based on the braking force attenuation percentage.

[0092] It should be noted that the above explanation of the embodiment of the method for testing the longitudinal performance of a highly integrated new type of driving unit is also applicable to the device for testing the longitudinal performance of a highly integrated new type of driving unit of this embodiment, and will not be repeated here.

[0093] According to the highly integrated new type of driving unit longitudinal performance test device proposed in the embodiment of the present application, the control parameters of the control module, the first simulation parameters of the high-speed drum system, the second simulation parameters of the vertical loading system and the electrical parameters of the electrical system are determined based on the current longitudinal performance test requirements of the highly integrated new type of driving unit to be tested; based on the first and second simulation parameters and the electrical parameters, the corresponding states of the high-speed drum system, the vertical loading system and the electrical system are controlled respectively, 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 current test parameters of the highly integrated new type of driving unit to be tested are measured by the measurement module, and the longitudinal performance test results of the highly integrated new type of driving unit to be tested are obtained according to the current test parameters. Thus, the problem that the existing technology cannot effectively simulate the extreme driving / braking performance verification of the highly integrated new type of driving unit under the use conditions of the whole vehicle on the test bench is solved, saving vehicle model development funds and time costs, and shortening the research and development cycle.

[0094] 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:

[0095] A memory 601 , a processor 602 , and a computer program stored in the memory 601 and executable on the processor 602 .

[0096] When the processor 602 executes the program, the highly integrated novel traveling unit longitudinal performance testing method provided in the above embodiment is implemented.

[0097] Furthermore, the electronic device further comprises:

[0098] The communication interface 603 is used for communication between the memory 601 and the processor 602 .

[0099] The memory 601 is used to store computer programs that can be executed on the processor 602 .

[0100] 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.

[0101] 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.

[0102] 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.

[0103] 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.

[0104] 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 highly integrated novel running unit longitudinal performance testing method.

[0105] An embodiment of the present application also provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the above-mentioned highly integrated new type running unit longitudinal performance testing method.

[0106] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0107] 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 more 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.

[0108] 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 highly integrated new type of running unit longitudinal performance test method, characterized in that: The method adopts a longitudinal performance test system, which includes a verification module, a measurement module and a control module. The verification module includes a fixed bracket, a high-speed drum system, a vertical loading system and an electrical system. The highly integrated new travel unit suspension connection point is connected to the fixed bracket and placed on the high-speed drum system. The high-speed drum system and the vertical loading system are installed on the fixed bracket. The method includes the following steps: Obtain the current longitudinal performance test requirements of the highly integrated new driving unit to be tested; Based on the current longitudinal performance test requirement, determining control parameters of the control module, first simulation parameters of the high-speed drum system, second simulation parameters of the vertical loading system, and electrical parameters of the electrical system; Based on the first simulation parameter, the second simulation parameter and the electrical parameter, the corresponding states of the high-speed drum system, the vertical loading system and the electrical system are controlled 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 longitudinal performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters.

2. The method according to claim 1, characterized in that The current longitudinal performance test requirements include at least one of a vehicle maximum speed and 100 km / h acceleration test, a braking energy recovery and efficiency test, and a continuous braking thermal decay test.

3. The method according to claim 2, characterized in that When the current longitudinal performance test requirement is the vehicle limit speed and 100 km / h acceleration test, the current test parameters of the highly integrated new travel unit to be tested are measured by the measurement module, and the longitudinal performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters, including: The measuring module is used to measure the speed and braking force of the simulation prototype under different friction coefficients and different wheel loads, and the maximum vehicle speed and acceleration time per 100 kilometers of the simulation prototype are read; According to the maximum vehicle speed value and the acceleration time per 100 kilometers, the longitudinal performance test result of the highly integrated new driving unit to be tested is obtained.

4. The method according to claim 2, characterized in that: When the current longitudinal performance test requirement is the braking energy recovery and efficiency test, the measuring module is used to measure the current test parameters of the highly integrated new travel unit to be tested, and the longitudinal performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters, including: Based on a preset braking driving condition, the measurement module is used to measure the power consumption and energy recovery of the simulated prototype during braking; Based on the power consumption and energy recovery conditions, the longitudinal performance test results of the highly integrated new driving unit to be tested are obtained.

5. The method according to claim 2, characterized in that: When the current longitudinal performance test requirement is the continuous braking thermal decay test, the measuring module is used to measure the current test parameters of the highly integrated new travel unit to be tested, and the longitudinal performance test results of the highly integrated new travel unit to be tested are obtained according to the current test parameters, including: Based on a preset braking test cycle condition, the measuring module is used to measure the brake temperature, the drive motor temperature and the controller temperature in the highly integrated new travel unit to be tested; When the brake temperature, the drive motor temperature and the controller temperature are all lower than corresponding preset thresholds, using the measurement module to measure the braking force variation trend of the highly integrated new travel unit to be tested; Based on the braking force variation trend, judging whether the braking force of the highly integrated novel driving unit to be tested is declining; When the braking force of the highly integrated new travel unit is in the decay condition, the braking force decay percentage is calculated, and the longitudinal performance test result of the highly integrated new travel unit to be tested is obtained based on the braking force decay percentage.

6. A highly integrated new type of running unit longitudinal performance test device, characterized in that: The device adopts a longitudinal performance test system, which includes a verification module, a measurement module and a control module. The verification module includes a fixed bracket, a high-speed drum system, a vertical loading system and an electrical system. The highly integrated new travel unit suspension connection point is connected to the fixed bracket and placed on the high-speed drum system. The high-speed drum system and the vertical loading system are installed on the fixed bracket. The device includes: An acquisition module is used to obtain the current longitudinal performance test requirements of the highly integrated new driving unit to be tested; A determination module, configured to determine, based on the current longitudinal performance test requirement, a control parameter of the control module, a first simulation parameter of the high-speed drum system, a second simulation parameter of the vertical loading system, and an electrical parameter of the electrical system; A test module is used to control the corresponding states of the high-speed drum system, the vertical loading system and the electrical system respectively based on the first simulation parameter, the second simulation parameter and the electrical parameter, 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 longitudinal performance test results of the highly integrated new travel unit to be tested according to the current test parameters.

7. The device according to claim 6, characterized in that The current longitudinal performance test requirements include at least one of a vehicle maximum speed and 100 km / h acceleration test, a braking energy recovery and efficiency test, and a continuous braking thermal decay test.

8. 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 highly integrated novel running unit longitudinal performance testing method as described in any one of claims 1 to 5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement the highly integrated novel running unit longitudinal performance testing method as described in any one of claims 1-5.

10. A computer program product, characterized in that It comprises a computer program, which, when executed by a processor, is used to implement the highly integrated novel running unit longitudinal performance testing method as described in any one of claims 1 to 5.

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