Design and Simulation of Double-stage Active Vibration Isolation System Based on Voice Coil Motor

Taking voice coil motor(VCM) as the actuator of active vibration isolation system,the operational mechanism and features of VCM are introduced,its mathematical model is set up,and transfer function is deduced.Then the model for double-stage vibration isolation system are established.A broadband active vibration isolation system using VCM as actuator has been designed for the goal to get minimum displacement transmissibility.Finally,the results from simulation by Matlab/Simulink show that this vibration isolation system offers very good performance of vibration isolation in rather broad frequency range.