控制系统对象分式模型辨识的一种方法

The method for identifying fractional model of control system plant

本文提出了一种利用阶跃响应数据辨识控制系统对象非降阶分式模型的方法。该方法不经过求S传函的中间步骤 ,而直接得到离散控制系统对象Z传函分式模型 。

This paper puts forward a method for identifying the fractional model of control system plant, using step response. The degree of model is not degraded. By applying the method, fractional Z-transfer function model can be obtained directly not necessary to calculate S-transfer function. Fractional S-transfer function model can also be obtained.