阐述了光电平台内框架减振的必要性,对一种六自由度内框架减振系统进行了模型简化,并使用拉格朗日动力学理论对该系统进行控制方程的推导。系统的控制方程表明,当被隔振系统的质心与隔振器的几何中心重合时,系统是解耦的。扫频振动仿真分析表明该内减振系统能够隔离20 Hz以上的中高频振动,该内减振系统设计合理。

The necessity of vibration damping for opto-electronic platform inner frame and the simplified model of a 6 dof inner frame vibration damping system were expounded. By using Lagrange dynamics theory, the control equation of the system was derived. The control equation of the system shows that when the CM of the sysytem is isolated and the geometric center of the vibration isolator overlap, the system is decoupled. The simulation of frequency sweep vibration shows that the inner frame vibration damping system can isolate the vibration of more than 20 Hz. Then we can conclude that the design is correct.