Nonlinear control of vehicle active suspensions

In this paper an improved nonlinear control law is applied to active suspension systems which are assumed to travel along a rugged road. The proposed control law needs only partially-known information instead of full-known detailed information about road conditions. The goal of this research is to reduce controller’s sensitivity to road disturbance and finally reduce forces transmitted by vehicle body to passengers resulting from a rugged road. The control performance is simulated to illustrate the validity of this design.