开发车辆横向加速度和偏航组合模拟装置

Fuwei Sun, Kunkun Li, Guoqiang Chen, De-Sheng Guo, Jincan Kang, Chaorui Ren
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引用次数: 0

摘要

驾驶时,车辆的操控稳定性和主动安全性受到电子稳定程序(ESP)的影响。ESP 电气性能测试对整车的研发至关重要。考虑到可用空间和路试的安全性,目前只能对 ESP 进行静态电气性能测试,缺乏动态电气性能测试方法。在行驶过程中,车辆产生的横向加速度和偏航角会激活 ESP,但这些动态信号很难采集。因此,本研究设计了一个横向加速度和偏航的组合模拟装置。横向加速度是根据圆周运动中离心加速度的原理,通过控制电机转速计算得出的。偏航角通过调整电机旋转位置获得。集成信号结合了两种模拟原理,可同时模拟两种物理信号。在试验现场的实际应用中,需要合理设计组合仿真装置结构。该装置主要由动力装置、传动机构、执行器、角度发生器和信号传输单元组成。在研究过程中,对关键部件进行了应力分析,并根据第三强度理论检验了疲劳强度。然后采用有限元分析方法对部件进行验证。最后,验证了组合仿真装置的可行性。在本文中,模拟装置可以采集各种工况的物理信号,并将信号实时传输给 ESP,车辆根据信号做出响应。所开发的装置对于车辆电气性能测试具有极其重要的实用价值。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development of combined simulation device for vehicle lateral acceleration and yaw
When driving, the handling stability and active safety of the vehicle are influenced by the Electronic Stability Program (ESP). The ESP electrical performance test is crucial to the research and development of the whole vehicle. Considering the available space and the safety of the road test, today, the static electrical performance test can only be carried out for the ESP, and the dynamic electrical performance test method is lacked. During driving, the vehicle generated lateral acceleration and yaw angle can activate the ESP, however it is difficult to collect these dynamic signals. Therefore, a combined simulation device for lateral acceleration and yaw is designed in the study. The lateral acceleration is calculated by controlling the motor rotation speed of based on the principle of centrifugal acceleration in circular motion. The yaw angle is obtained by adjusting the motor rotation position. Integrated signal combines two simulation principles to simulate two physical signals at the same time. The practical application in the testing field, it is necessary to reasonably design the combined simulation device structure. The device mainly consists of a power device, a transmission mechanism, an actuator, an angle generator and a signal transmission unit. In the process of study, stress analysis is carried out on key components, and the fatigue strength is checked based on the third strength theory. Then the finite element analysis method is applied to verify the component. Finally, the feasibility of the combined simulation device is verified. In the paper, the simulation device can collect the physical signals of various working conditions, which it transmits the signals to the ESP in real time and the vehicle responds according to the signals. The developed device has extremely important practical value for the vehicle electrical performance test.
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