基于混沌信号的系统频率响应特性测试方法  

Method for Testing System Frequency Response Characteristic Based on Chaotic Signal

作　　者：刘文波[1] 于盛林[1] 黄晓晴[1] 

机构地区：[1]南京航空航天大学自动化学院,南京210016

出　　处：《数据采集与处理》2004年第3期254-257,共4页Journal of Data Acquisition and Processing

摘　　要：介绍了在难以用解析法建立系统的传递函数时 ,利用混沌信号来测试系统频率响应特性的一种实验方法。该方法仅需将混沌信号作为激励信号作用于被测系统 ,通过计算系统输出信号的频谱 ,便可获得被测系统的频率响应特性。通过对几种典型的高通、低通滤波器的计算机仿真及实际电路测试 ,验证了该测试方法原理简单 ,实用性强 ,对宽带被测系统的频率响应特性可得到很好的测试效果。An experimental method for testing the system frequency response characteristic based on chaotic signal is introduced. It is useful when a system′s transfer function cannot be obtained through the resolution. The frequency response characteristic of the tested system can be easily obtained just by giving a chaotic input and analyzing the spectrum of the output. This method is simple, practical, and suitable for the broad-band system. Its efficiency is proved by simulations and experiments for typical filters and circuits.

关 键 词：混沌信号 频率响应特性 信号处理 测试方法 计算机仿真 滤波器 

分 类 号：O415.5[理学—理论物理] TP206.1[理学—物理]