Preview Control of Active Suspension Using Disturbance Information of Front Wheel

Abstract

This paper deals with the application of an optimal preview control to an active vehicle suspension system. The responses of the front wheel are useful to estimate the disturbance from the road surface to be applied to the rear wheel. It is the strategy of this preview control that all state variables are measured and fed to the front and rear controllers, and also fed-forward as preview information of road disturbance to the rear wheel. The design is based on a two-degree-of-freedom dynamic model with two wheels. The advantage of preview control is shown by computer simulations.