Investigation of active vibration isolation with inertial actuators

Abstract

A single stage active vibration isolation system with inertial actuators is presented in this paper. The system frequency responses were obtained from the finite element model of the vibration isolation system. By using curve fitting method, the transfer functions of primary paths and secondary paths were derived, which were defined as transfer functions from excitation forces to error sensors and from secondary forces to error sensors respectively. Then multi-input multi-output active vibration control simulation and experiment were conducted in the Lab. The results show that good vibration attenuations were achieved. Some conclusions were given and discussed at last. Key words: vibration isolation; inertial actuator; multi-input multi-output; active control