两轴四框架机载光电平台稳定原理分析

讨论了两轴四框架光电稳定平台的工作原理,根据各框架转轴坐标旋转关系,利用转移矩阵,建立了各框架的运动学耦合方程;并对载机扰动在平台框架间的运动耦合补偿进行了分析,推导出速率稳定回路中电机的偏转输出速率;进而给出了内外框架的控制原理框图;为高精度机载吊舱的稳定控制设计提供理论依据。

Stabilization analysis of airborne electro-optical platform with two-axis and four-gimbal

In this paper,the working principle of electro-optical stabilized platform with two-axis and four-gimbal is discussed.According to the coordinate rotation relationship of each axis,the motion coupling equations of each frame are established by transmission matrix;The motion coupling compensation among frames caused by plane turbulence is analyzed.Then the deflection rate from the motor is derived in the rate stabilized loop;the control block diagram of inner and outer gimbals is given;this research provides theoretical guidance for control system design of high-precision airborne pod.