| 转子动平衡中振动信号幅值相位的提取方法研究 |
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| 引用本文： | 郭俊华,伍星,柳小勤,闫天延. 转子动平衡中振动信号幅值相位的提取方法研究[J]. 机械与电子, 2011, 0(10): 6-10 |
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| 作者姓名： | 郭俊华 伍星 柳小勤 闫天延 |
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| 作者单位： | 昆明理工大学机电工程学院; |
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| 摘 要： | 针对转子动平衡中振动信号的特点,深入研究了提取不平衡量振动信号幅值相位的3种方法:传统FFT法、整周期截断DFT法和互相关法。最后,通过仿真和实验,对比分析了这3种方法的幅值、相位提取精度。结果表明整周期截断DFT法具有较高的提取精度,且方法简单,在转子动平衡中具有较好的应用前景。
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| 关 键 词： | 转子动平衡 不平衡量 幅值 相位 FFT DFT 互相关 |
Research on the Methods of Obtaining Magnitude and Phase of Vibration Signal for Rotor Balancing |
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| GUO Jun-hua,WU Xing,LIU Xiao-qin,YAN Tian-yan. Research on the Methods of Obtaining Magnitude and Phase of Vibration Signal for Rotor Balancing[J]. Machinery & Electronics, 2011, 0(10): 6-10 |
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| Authors: | GUO Jun-hua WU Xing LIU Xiao-qin YAN Tian-yan |
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| Affiliation: | GUO Jun-hua,WU Xing,LIU Xiao-qin,YAN Tian-yan(Faculty of Mechanic and Electrical Engineering,Kunming University of Science and Technology,Kunming 650093,China) |
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| Abstract: | According to the characteristics of vibration signal in the rotor balancing,this paper studied three methods of extracting the amplitude and phase of unbalance vibration signal in-depth.The three methods were the traditional fast fourier transform(FFT) method,the discrete fourier transform(DFT) method by the entire cycle of truncated,and the correlation method.Finally,the extracting accuracy of amplitude and phase for the three methods were contrasted and analyzed.The results indicate that the DFT method ha... |
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| Keywords: | rotor balancing unbalance amplitude phase FFT DFT correlation |
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