Control sheme to improve ride comfort for four-wheel vehicles

In this paper, based on the four wheel vehicle model, a new robust active suspension control scheme is developed so that ride comfort at any specified location becomes best. To achieve this end, a combined ideal vehicle model is designed. In the ideal vehicle model, the location where ride comfort becomes best can be moved easily by setting only two design parameters without redesigning of another controller. Then, a robust tracking controller is proposed so that the actual vehicle can track the combined ideal vehicle.