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所属单位：能源与动力学院

发表刊物：MECHANICAL SYSTEMS AND SIGNAL PROCESSING

关键字：Active front steering Lateral stability Torque compensation Coupling control

摘要：A displacement and force coupling control design for active front steering (AFS) system of vehicle is proposed in this paper. In order to investigate the displacement and force characteristics of the AFS system of the vehicle, the models of AFS system, vehicle, tire as well as the driver model are introduced. Then, considering the nonlinear characteristics of the tire force and external disturbance, a robust yaw rate control method is designed by applying a steering motor to generate an active steering angle to adjust the yaw stability of the vehicle. Based on mixed H-2/H-infinity, control, the system robustness and yaw rate tracking performance are enforced by H-infinity norm constraint and the control effort is captured through H-2 norm. In addition, based on the AFS system, a planetary gear set and an assist motor are both added to realize the road feeling control in this paper to dismiss the influence of extra steering angle through a compensating method. Evaluation of the overall system is accomplished by simulations and experiments under various driving condition. The simulation and experiment results show the proposed control system has excellent tracking performance and road feeling performance, which can improve the cornering stability and maneuverability of vehicle. (C) 2018 Elsevier Ltd. All rights reserved.

ISSN号：0888-3270

是否译文：否

发表时间：2018-06-01

合写作者：张汉清,Li, Yijun

通讯作者：赵万忠