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电子稳定程序(ESP)是改善汽车行驶性能的一种控制系统,可大大降低交通事故并提高道路安全。它整合了ABS防抱死制动系统和ASR牵引力控制系统,有防止汽车转向时滑移、不稳定和侧向驶出车道的综合控制能力。本文针对某A型车,基于多体系统动力学理论,利用ADAMS/Car建立了包括转向系统、前后悬架系统、制动系统和车身等子系统的虚拟样机仿真模型。为了对加装ESP系统的车辆操纵稳定性进行仿真研究,本文将车辆横摆角速度作为控制变量,建立了ESP模糊控制模型,针对干路面和冰雪路面工况,对车辆有无ESP控制时的操纵稳定性进行了仿真分析。结果表明,ESP能够提高车辆的操纵稳定性,帮助驾驶员适应各种路面和行驶工况,取得了良好的主动控制效果,大大提高了行车安全。
Electronic Stability Program (ESP) is a control system that improves the driving performance of a car and can greatly reduce traffic accidents and improve road safety. It incorporates an ABS anti-lock brake system and ASR traction control system to prevent slippage, instability and lateral drive-out control of the vehicle while steering. In this paper, a virtual prototype simulation model based on multi-body system dynamics theory and ADAMS / Car is established for a type A vehicle based on the multi-body system dynamics theory, including subsystems such as steering system, front and rear suspension system, brake system and vehicle body. In order to simulate the vehicle handling stability of the ESP system, this paper uses the yaw rate of the vehicle as the control variable to establish the ESP fuzzy control model. For the dry road surface and the ice and snow surface conditions, the control of the vehicle with or without ESP control The stability is analyzed by simulation. The results show that ESP can improve the handling stability of the vehicle, help the driver to adapt to various road conditions and driving conditions, and achieve good active control effect and greatly improve traffic safety.