伺服环路控制器的数字化设计  

The digital design of servo loop controller

作　　者：罗黎希[1] 王小兵[1] 周阳辉[1] 

机构地区：[1]中国卫星海上测控部,江苏江阴214431

出　　处：《电子设计工程》2011年第16期72-74,共3页Electronic Design Engineering

摘　　要：为解决模拟电路在伺服控制系统中存在的器件漂移、抗干扰能力差、变量不易监视等诸多不足,对某船载卫通站伺服环路模拟控制器进行了分析,提出计算机控制代替模拟控制的方法。首先通过电路分析得出模拟控制器的传递函数,再采用零阶保持器法对模拟控制器传递函数进行数字化,并给出了便于编程的控制算法,得到了相应的数字控制器传递函数。经过Matlab仿真计算证明,数字控制器完全可以替代模拟控制器,从而提高天线伺服系统的稳定性和可靠性。To solve the disadvantages of the analog circuit in the servo control system,such as device drift,pour anti-interference ability,difficult to monitor variables and etc,we analysed the servo loop analog controller of a shipboard satellite communication station and proposed the method that replacing analog control with computer control.We used the zero-order holder to digitalize the analog controller,and proposed a control algorithm that can be achieved with computer easily.Through simulation with Matlab,we proved that digital controller can completely replace the analog controller,which improved the antenna system stability and reliability.

关 键 词：模拟控制器 数字控制器 仿真 计算机控制系统 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]