Design and analysis of a GMM actuator for active vibration isolation

Vibration isolation system is always required to reduce the affected interference in a very short time. More specifically, the high-frequency interference can be effectively reduced by means of passive vibration isolation, while low-frequency interference needs prevent inhibition by applying active vibration isolation. The key components of active seismic isolation system include sensor and actuator, among which the actuator will obtain a sound vibration isolation effect only if larger output force and faster response speed are acquired. In this paper, a giant magnetostrictive actuator is designed; the performance parameters and dynamic hysteresis response characteristics are analyzed.