摘要
伺服系统又称为随动系统,是构成自动化体系的基本环节,是由若干元件和部件组成的具有功率放大作用的一种自动控制系统。系统辨识是指当用户无法从物理上得出所研究系统的数学模型,但可以通过适当的实验手段测试出系统的某种响应信息时,就可以根据它来获得系统的数学模型。本文完成了对直流伺服系统的建模以及辨识,尤其是利用系统的阶跃响应数据对直流伺服系统的模型进行了直接辨识,即由系统阶跃响应采样数据构造线性方程组,通过对方程组求解估计出系统参数。最后,对辨识出的系统进行仿真,通过将仿真结果与原阶跃响应数据比较表明,本文所采用的辨识方法取得了良好的辨识效果。
Servo System also known as follow-up system,it＇s the basic part of automation system,which is the automatic control system that constituted from thousands of components and could realize energy amplification.The user can get the mathematical model by system identification when the user can＇t get the mathematical model physical methods.The article completed modeling and recognition to Dc Servo System,especially direct distinguished the Dc Servo System by step response data.This paper＇s recognition methods got the good recognition effect.
关键词
直流伺服系统
模型
辨识
Dc Servo System Model Identification
