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

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

Key words:semi-active suspension; electronic stability control (ESC); active roll control;integrated control