| 基于相位差校正法的全息谱研究 |
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| 引用本文： | 汤宝平,陈建波,章国稳.基于相位差校正法的全息谱研究[J].振动与冲击,2009,28(8):99-102. |
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| 作者姓名： | 汤宝平 陈建波 章国稳 |
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| 作者单位： | 重庆大学机械传动国家重点实验室，重庆 400044 |
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| 基金项目： | 国家自然科学基金资助项目，霍英东教育基金会11届青年教师基金，第四十三批博士后科学基金 |
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| 摘 要： | 针对传统全息谱在噪声干扰下精度降低的问题，提出了一种新的基于相位差校正法的全息谱分析方法。该方法首先对时域信号加窗截断后进行FFT变换，然后引入相位差法校正其频率、幅值和相位，最后合成全息谱图。通过仿真及对柔性转子实验台的振动信号的分析，表明基于相位差校正法的全息谱可以明显提高其分析精度，更加精确而有效地诊断旋转机械的故障。
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| 关 键 词： | 相位差 频谱校正 全息谱 旋转机械 |
| 收稿时间： | 2008-9-3 |
| 修稿时间： | 2008-11-21 |
Study on holospectrum based on correction of phase difference |
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| TANG Bao-ping,CHEN Jian-bo,ZHANG Guo-wen.Study on holospectrum based on correction of phase difference[J].Journal of Vibration and Shock,2009,28(8):99-102. |
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| Authors: | TANG Bao-ping CHEN Jian-bo ZHANG Guo-wen |
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| Affiliation: | State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044 |
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| Abstract: | A new method of holospectrum based on correction of phase difference is put forward against to the lower precision of traditional holospectrum in noisy interference. First it takes windowed FFT transformation of signal in time domain and then the frequency,amplitude and phase are corrected by correction of phase difference.At the last, the holospectrum is synthesized.Through the simulation and the analysis of flexible rotor’s vibration signal,The result shows that it has higher precision in practice and can diagnose the rotation machinery fault more accurately and more effectively. |
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| Keywords: | phase difference spectrum correction holospectrum rotary machinery |
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