基于主动转向和空气动力学协调控制的车辆稳定性研究

兰州理工大学学报 ›› 2023, Vol. 49 ›› Issue (5): 59-66.

基于主动转向和空气动力学协调控制的车辆稳定性研究

高伟, 余伟, 邓召文^*, 易强

湖北汽车工业学院汽车工程学院, 湖北十堰 442002

收稿日期:2021-11-23 出版日期:2023-10-28 发布日期:2023-11-07
通讯作者: 邓召文(1979-),男,山东安丘人,博士,副教授. Email:dengzhaowen1@163.com
基金资助:
国家自然科学基金(52072116),湖北省自然科学基金(2023AFB985),湖北省重点实验室创新基金(2015XTZX0423),湖北省教育厅科研项目(B2021144,B2021143)

Research on vehicle stability based on active steering and aerodynamics control

GAO Wei, YU Wei, DENGZhao-wen, YI Qiang

College of Automotive Engineering, Hubei University of Automotive Technology, Shiyan 442002, China

Received:2021-11-23 Online:2023-10-28 Published:2023-11-07

摘要/Abstract

摘要： 针对极限工况下轮胎易饱和导致车辆失稳问题,提出基于滑模控制的主动空气动力学控制和主动后轮转向集成控制策略,提高低附着路面上车辆的稳定性.该控制策略由上层控制器和底层控制器组成:上层控制器基于车辆二自由度模型确定期望动力学响应,并建立协调控制策略;下层控制器分别建立基于前馈-LQR反馈的主动后轮转向和基于滑模控制的主动空气动力学控制策略,并集成实现车辆稳定性协调控制.通过搭建Carsim/Simulink联合仿真环境,选取双移线工况和漂移工况对协调控制策略的有效性进行验证.结果表明,所设计的协调控制系统能够降低轮胎的利用率,并显著提高车辆的稳定性.

关键词: 车辆稳定性, 主动后轮转向, 主动空气动力学控制, 滑模控制

Abstract: Aiming at the problem of vehicle instability caused by tire saturation under extreme working conditions, an integrated control strategy based on active aerodynamic control and active rear wheel steering is proposed to improve the stability of vehicles on low-adhesion roads. The control strategy consists of an upper controller and a lower controller. The upper controller uses the two-degree-freedom model of the vehicle to determine the desired dynamic response. While, in the lower controller, a vehicle stability strategy with the coordination of active rear wheel steering and active aerodynamics is proposed. By building the CarSim/Simulink joint simulation model, the effectiveness of the discussed strategy is verified by selecting the double shift line condition and the drift condition. The results show that the designed coordinated control system can reduce the utilization of tires and effectively improve vehicle stability.

Key words: vehicle stability, active rear wheel steering, active aerodynamics, sliding mode control

中图分类号:

U469.696

高伟, 余伟, 邓召文, 易强. 基于主动转向和空气动力学协调控制的车辆稳定性研究[J]. 兰州理工大学学报, 2023, 49(5): 59-66.

GAO Wei, YU Wei, DENGZhao-wen, YI Qiang. Research on vehicle stability based on active steering and aerodynamics control[J]. Journal of Lanzhou University of Technology, 2023, 49(5): 59-66.

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