Analytical model of a magnetorheological damper and its application to the vibration control

Magnetorheological (MR) fluid and its damper have received a great deal of attention in the recent years. It is very useful for this MR controllable damper in the vibration control system, especially as a semi-active control device. To develop the control algorithms that take maximum advantage of the unique features of the MR damper a model must be developed that can adequately characterize the damper intrinsic behavior In this paper following a review of three mechanical models for MR damper the effect of these models on the vibration control is analyzed in a one-degree-of-freedom system. Numerical simulations are performed when the MR damper is used as the passive type damper on-off type damper and quasi-skyhook type damper. The results show that the models are less affecting the vibration control performance, and the MR damper appears the best control performance in the quasi-skyhook type.