Semi-Active Vibration Control for Rolling Stocks with Magneto-Rheological Fluid

Abstract

Semi-active vibration control for rolling stocks attracts attentions as an effective method of improving riding quality. We apply MRF (magneto-rheological fluid) damper, whose yield strength can be controlled by applied magnetic field, to semi-active lateral suspension system for rolling stocks. In experiments, we measure basic characteristics of the MRF damper, and ascertain the improvement of riding quality level by using the bogie stability test equipment. The results show that the MRF semi-active suspension system can achieve much the same performance level as the conventional semi-active systems, while initial and maintenance costs are reduced.