Ⅰ型系统稳态误差分析及精度改进

Steady-state Error Analysis and Precision Improvement of Type I System

稳态误差是影响系统精度的一个重要因素,针对一个I型系统在给定输入下的系统稳态误差进行分析,应用两种方法,即增大系统开环增益和引入前馈控制单元,对系统的精度进行改进,并运用Matlab进行仿真,比较两种校正方法各自的优缺点。实验证明,引入前馈控制单元能更好地对系统的精度进行改进。

The steady - state error is an important element for system precision. The paper analyses the steady - state error of a type I system under assignment input signal, uses the Matlab to simulate with two methods, the enlargment openloop gain and the feedforward compensation, to improve the precision of this system, compares the strengths and weeknesses of these two methods. It is shown that the feedforward compensation makes a good role in precision improvement for ,a system.