扫描镜精密伺服系统的数字控制研究

The Study on Digital Control of Scanning Mirror Precise Servo System

针对扫描镜精密伺服系统，采用按照电流环、违反环和位五环等3个回路进行控制系统设计的开闭环复合控制方案。在位置环回路中，实现系统解耦控制，并以四点中心差分法和非线性积分算法改进传统的微分和积分运界人而提出一种新型的数学控制器结构。实验结果表明改进的控制方案与控制算法能明显提高控制系统性能。

The scanning mirror precise servo system is designed by the scheme of compound control of open and closed loops with current ,velovity and position loops.When designing position loop,ideally derivative and integral controllers are modified by four point difference and nonlinear integral algrithms except that the system is decoupled.Thus, this kind of new digital comtroller is presented.The experiment results prove that the system charateristics are greatly improved by the modified control scheme and algrithms .