Abstract
This paper presents vibration control performances of a quarter vehicle magnetorheological (MR) suspension via new control strategy considering hysteretic behavior of MR damper. In order to achieve this goal, a commercial MR damper, Delphi Magneride™ which is applicable to high class passenger vehicle is adopted. The MR damper has two types of damping force hysteretic behavior. The one is velocity-dependent hysteresis and the other is field-dependent hysteresis. Since the magnetic field is directly connected with control input, the field-dependent hysteresis largely affects control performances of MR suspension system. To consider the field-dependent hysteretic behavior of MR damper, a feed-forward hysteretic compensator associated with the biviscous model and inverse Bingham model is formulated to achieve desired damping force. Then, several vibration control algorithms including LQR (linear quadratic regulator) controller, skyhook controller and PID controller are formulated and integrated with Preisach hysteretic compensator. Consequently, vibration control performances of MR suspension system are experimentally evaluated using the quarter-vehicle test facility.