| 振动信号的幅值和相位计算方法分析 |
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| 引用本文： | 商一奇,曹亦庆,柴艳丽,张宁宁,娄丽芬.振动信号的幅值和相位计算方法分析[J].航空计测技术,2010,30(4):30-32. |
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| 作者姓名： | 商一奇 曹亦庆 柴艳丽 张宁宁 娄丽芬 |
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| 作者单位： | [1]中航工业北京长城计量测试技术研究所,北京100095 [2]中航工业北京曙光电机厂,北京100028 |
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| 摘 要： | 给出了基于Kaiser窗FFT频谱法、正弦逼近法和全相位时移相位差法计算振动信号幅值和相位的计算方法,并使用三种方法分别对单一的正弦信号以及混有噪声和其它频率的正弦信号进行了测试。通过测试数据对三种方法的信号处理效果进行了分析比较,阐述了不同计算方法的优缺点。比较结果显示具有抑制频谱泄漏和＂相位不变性＂的全相位谱分析结合高精度相位差法而得的全相位时移相位差法精度更高,应用范围更广。
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| 关 键 词： | 振动信号 FFT频谱法 正弦逼近法 全相位时移相位差法 |
Analysis of Amplitude and Phase Calculation Methods of Vibration Signal |
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| SHANG Yiqi,CAO Yiqing,CHAI Yanli,ZHANG Ningning,LOU Lifen.Analysis of Amplitude and Phase Calculation Methods of Vibration Signal[J].Aviation Metrology & Measurement Technology,2010,30(4):30-32. |
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| Authors: | SHANG Yiqi CAO Yiqing CHAI Yanli ZHANG Ningning LOU Lifen |
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| Institution: | 1.Changcheng Institute of Metrology ＆ Measurement,Beijing 100095,China;2.Beijing Shuguang Electrical Machinery Factory of Aviation Industry,Beijing 100028,China) |
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| Abstract: | This paper shows the calculation methods of the amplitude and phase of vibration signal based on Kaiser window,sine-approxi-mation and all-phase time-shift phase difference.Both the single sine signal and the complex sine signal mixed with noise and signals on other fre-quency are measured using the three methods.By comparing the data results,this paper gives the characteristic of each method,and the all-phase time-shift phase difference method is shown to be more efficient. |
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| Keywords: | vibration signal FFT sine-approximation all-phase time-shift phase difference |
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