Study on LQG Control and Simulation of Automobile Semi-active Suspension

A LQG controller of automobile semi-active suspension were designed through the optimal theory,based on a road input model and 1/4 car model.performance indexes,body acceleration,suspension dynamic deflection and tire dynamic travel were compared.The simulation results demonstrated that the semi-active suspension with a LQG controller has good effect on the aspect of improving automobile driving smoothness and riding comfort performance.