Abstract: It proposes a novel piezoelectric-rubber combination vibration isolator to meet the vibration isolation needs of precision instruments of space vehicle. Piezoelectric stack actuator and the rubber part have been designed. It proposes a double-layer active and passive integration of vibration isolation system by multi-point support, establishes the dynamics model of vibration isolation system, applies a improved Linear Quadratic Regulator (LQR) optimal control to the double-layer vibration isolation system and has the numerical simulation analysis based on Simulink. Its results show that the vibration isolator can effectively isolate from the displacement excitation of the basis, prove the study of the isolation method in theory is effective and feasible, thus laid the foundation for further experimental studies.

摘要： 为保证飞行器敏感仪器的精度，提出一种压电堆橡胶组合隔振器。对压电堆作动器和橡胶隔振器进行设计，提出一个多点支撑双层主被动一体化隔振系统，建立隔振系统的动力学模型，应用改进后的线性二次型（LQR）经典最优理论对双层隔振系统进行主动控制算法设计，并基于Simulink对正弦激励和随机激励情况分别进行了数值仿真分析。仿真结果表明，所设计的隔振器能够大幅度隔离源自基础的激励，证明所研究的隔振方法在理论上是有效的和可行的，从而为进一步的实验研究奠定基础。

关键词: 振动与波, 一体化隔振, 最优控制, 多点控制, 压电堆, 双层隔振