Design of LQG Controller of Automobile Active Suspension Based on Simulink

A 2-degree-of-freedoms 1/4 body equations of vehicle active suspension was established.Based on the linear optimal theory,a LQG(linear Quadratic Gaussian)controller of automobile active suspension which is used for simulation with the aid of Matlab/simulink software was desighed.It showed that the suspension with the LQG controller could effectively improve vehicle’s riding performances.