Integrated vehicle dynamics control through coordinating electronic stability program and active suspension system

Abstract

This paper investigates integrated vehicle dynamics control through coordinating active suspension system (ASS) and electronic stability program (ESP) in order to improve the overall vehicle performance including handling, stability, and comfort. A two-layer hierarchical control architecture is proposed to integrated control of the two chassis control systems. The upper layer controller is designed to coordinate the interactions between the ASS and the ESP. While in the lower layer, the two controllers including the ASS and the ESP, are developed independently to achieve their local control objectives. Simulation investigation is performed to demonstrate the effectiveness of the proposed hierarchical control system. Results show that the proposed hierarchical control system is able to improve the multiple performance indices of the vehicle including both the ride comfort and the lateral stability, compared to the non-integrated control system.

H 2 control of a one-quarter semi-active ground vehicle suspension

“…By extending suspension system to a half-vehicle, Zhang, Xia, Qin, and Zhang (2010) also applied the LQG approach to improve ride comfort and handling stability (chassis and pitch angle accelerations, as well as vertical displacements of wheels). Furthermore, Xiao, Chen, Zhou, and Zu (2009) presented a full-vehicle suspension control via an LQG control that applied adaptive fuzzy logic. Results in time domain warrant: suspension handling, vehicle stability and passenger comfort.…”