Goertzel算法在线性系统幅频特性测试中的应用  

Application of Goertzel in Amplitude-Frequency Characteristics Testing of Linear Systems

作　　者：黄永阳[1] 严家明[1] 杨灵芝[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710129

出　　处：《测控技术》2012年第3期115-118,共4页Measurement & Control Technology

基　　金：航空科学基金资助项目(2010ZC53028)

摘　　要：针对稳态响应信号的幅值检测,提出了采用Goertzel算法实现的方法。介绍了Goertzel算法原理及实现结构,根据稳态响应信号的频率确定对应的采样频率和采样点数,以达到整周期采样,从而避免频谱泄露对计算精度的影响。对典型线性系统的幅频特性测试进行仿真,结果表明该方法计算量小、效率高和测量精度较高,具有很好的实用性。A new method based on Goertzel algorithm is proposed to test the amplitude of steady-state response signals.Sampling frequency and points are determined according to the frequency of steady-state response signals,so that complete period sampling is realized without the influence of frequency spectrum leakage.Simulation on the amplitude-frequency test of a typical linear system indicates that the algorithm is of higher efficiency,higher accuracy and better practical applicability.

关 键 词：GOERTZEL算法 线性系统 幅频特性 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]