Development of fast response MR-fluid actuator

Magnetorheological (MR) fluids are materials that change their rheological behavior by an applied magnetic field. We have developed MR-fluid actuator. In this paper, we investigate the dynamic characteristics of the MR-fluid actuator and aim to improve the response. The transient magnetic analysis is examined in consideration of the eddy current. Finally, we realize a much faster MR-fluid actuator.