Abstract
This paper presents a practical design method of controllers for semi-active suspension systems with modulated dampers. Since the modulated dampers have intrinsic nonlinear properties with uncertainty, model following sliding mode control is applied for achieving robust properties against the uncertainty. First, taking into account of both ride-comfort and ride-safety, the desired reference model is considered to achieve so called sky-hook & ground-hook damper system approximately, . Then the reference model is modified so that the control law can be implemented without any road information, which is required for realizing the ground-hook damper strictly. Numerical simulation results show the practical effectiveness of the controller.
