| Goertzel算法在线性系统幅频特性测试中的应用 |
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| 引用本文： | 黄永阳,严家明,杨灵芝.Goertzel算法在线性系统幅频特性测试中的应用[J].测控技术,2012,31(3):115-118. |
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| 作者姓名： | 黄永阳 严家明 杨灵芝 |
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| 作者单位： | 西北工业大学 电子信息学院;西北工业大学 电子信息学院;西北工业大学 电子信息学院 |
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| 基金项目： | 航空科学基金资助项目（2010ZC53028） |
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| 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。
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| 关 键 词： | Goertzel算法 线性系统 幅频特性 |
Application of Goertzel in Amplitude-Frequency Characteristics Testing of Linear Systems |
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| HUANG Yong-yang,YAN Jia-ming,YANG Ling-zhi.Application of Goertzel in Amplitude-Frequency Characteristics Testing of Linear Systems[J].Measurement & Control Technology,2012,31(3):115-118. |
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| Authors: | HUANG Yong-yang YAN Jia-ming YANG Ling-zhi |
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| Affiliation: | (School of Electronic and Information,Northwestern Polytechnical University,Xi’an 710129,China) |
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| Abstract: | 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. |
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| Keywords: | Goertzel algorithm linear system amplitude-frequency characteristics |
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