光学消像旋高精度位置控制系统的算法与实现

为了解决周视光电观瞄设备中光学消像旋齿轮传动所带来的误差大、间隙难以控制等不足,本文提出去掉光学消像旋的机械传动,将其变为无机械传动的位置控制系统.结合现代控制理论,在分析了光学消像旋位置控制系统中被控对象模型的基础上,设计以比例-积分-微分控制器为主,非线性控制为辅的融合控制算法.以单片机C8051作为控制核心,编码器作为位置传感器,光电转台方位角度作为控制信号,组成位置控制系统并进行调试、试验测试,测试结果表明其实现的光学消像旋性能优于含有机械传动的光学消像旋性能,最终实现光学消像旋高精度位置控制.

Algorithm and Realization for Optical De-rotation High-precision Position Control System

In order to solve the problems of large error and uncontrollable clearance caused by optical de-rotation gear transmission in panoramic electro-optical observation and sighting equipment, a position control system is proposed in which the optical de-rotation mechanical transmission is removed and substituted with a position control system without mechanical transmission.Using modern control theory and on the basis of analyzing the subject model in the optical de-rotation position control system,the complex control algorithm is designed, dominated by Proportional-Integral-Differential(PID) controller and aided by nonlinear control. The position control system is established,adjusted and tested with the single chip processor C8051 served as the core of controlling,the coder as the position transducer,electro-optical stage azimuth as the controlling singnal.The test results indicate that the optical de-rotation performance is better than that of the mechanical transmission, and the high precision position control is realized.