考虑侧倾的半主动悬架与电子稳定控制系统集成控制

Integrated Control Based on Semiactive Suspension and Electronic Stability Control System Considering Active Roll Control

摘要:

建立四自由度半车模型，利用滑模变结构控制方法设计以磁流变减振器为执行机构的主动抗侧倾控制策略，研究质心侧偏角相平面稳定边界，设计电子稳定控制（ESC）系统的控制算法.在研究侧翻指标基础上，设计磁流变半主动悬架与ESC的主动防侧翻集成控制算法.通过紧急双移线工况和鱼钩工况对提出的控制策略进行仿真验证，结果显示集成控制策略能够提升操纵稳定性，并有效降低车辆侧倾角，从而降低侧翻危险.

Abstract:

A half car model with four degrees of freedom is built, and the sliding mode control theory is applied to prevent vehicle rollover which using magnetorheological fluid dampers as their actuators. Based on the study of stable area on sideslip angle phase portraits, the control algorithm of electronic stability control (ESC) system is set up. Considering the rollover index, the integrated control algorithm with semiactive suspension and ESC is designed. The algorithm is verified by simulation with doublelane change maneuver and fish hook test, and the simulation results indicate that the integrated control algorithm can improve vehicle handling stability and decrease roll angle, which reduces the danger of rollover efficiently