Modeling of Cubic-Stewart vibration isolation platform with hybrid vibration isolator

Abstract

In order to protect the instrument and equipment for space applications, vibration control is necessary. In this paper, a Cubic-Stewart vibration isolation platform employing a novel hybrid vibration isolator (HVI) is presented. The HVI is composed of the active piezoelectric stack actuator and the passive rubber isolator, which features compact structure and high reliability. The simulation results the active piezoelectric stack actuator can eliminate the resonance peak significantly and the passive rubber isolator is effective to isolate a part of vibration once active control fails. Finally, the simulation analysis of the Cubic-Stewart platform is established based on the transmissibility and single input single out (SISO) control algorithm. The results verify the effectiveness of our proposed vibration isolation system.