一种简捷快速的系统辨识方法的研究

The research of a means for rapid system identification

基于对开环系统阶跃响应曲线的分析 ,提出了采用最小二乘逼近数据来得到精确模型的方法。此方法通过时域方法分析阶跃响应曲线 ,确定出模型的几个关键特性 ,并且结合图形界面来实现辨识过程 ,用户可通过图形用户界面对阶跃响应进行编辑直接获得系统模型的结构和参数 ,其操作简单 ,方便 ,只需拖动几个手柄就可完成。最后给出仿真实例验证了此方法的精确性。

This paper presents an interactive tool for rapid system identification. It is based on analysis of step responses and performed a least squares fit to data. The graphical user interface lets the user manipulate the step response for a given model structure directly and the manipulation is easy. An illustrative example of simulation is given in the end.