二阶系统两个特征函数的识别

Identification of Two Characteristic Function on Second-order System

通过对二阶系统仿真程序的编写以及对函数图形的识别，建立奈魁斯特图与脉冲响应函数之间的对应关系，为研究实际系统的特征函数图形提供参考。

This paper establishes the relationship which maps Nyquist diagram to pulse-response func-tion, by making simulation program and identifying the function figure of the second-order system.This method is of referential value for the study of the practical system function figure.