| 数字锁相环引起的振动信号幅值和相位误差分析 |
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| 引用本文： | 董中华.数字锁相环引起的振动信号幅值和相位误差分析[J].青岛大学学报(自然科学版),1997,10(3):69-73. |
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| 作者姓名： | 董中华 |
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| 作者单位： | 青岛大学机械系!青岛 266071 |
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| 摘 要： | 在旋转机械设备振动信号测试中，由于数字锁相环不能准确对周期信号进行整周期采样会引起的幅值和相位误差，本文分析了这种误差产生的原因，并给出了减小误差的方法．
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| 关 键 词： | 振动测试 锁相环 旋转机械 |
ANALYSIS OF AMPLITUDE AND PHASE ERROR IN VIBRATION SIGNALS TEST CAUSED BY DIGITAL PHASE-LOCKED LOOP |
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| Dong Zhonghua.ANALYSIS OF AMPLITUDE AND PHASE ERROR IN VIBRATION SIGNALS TEST CAUSED BY DIGITAL PHASE-LOCKED LOOP[J].Journal of Qingdao University(Natural Science Edition),1997,10(3):69-73. |
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| Authors: | Dong Zhonghua |
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| Abstract: | In vibration signals test of rotating-machine, the actual sampling rate which is controled by digital Phase-Locked Loop is not exact equal to that in theory, so the amplitude and phase error occur. In this paper, the reason is analyzed and the method for reducing error is given. |
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| Keywords: | vibration test phase-locked loop rorating-machine |
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