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| 基于小波分析的变频调速电动机运行噪声-负载特性 | |
| 引用本文： | 王新,林家骏,杜庆楠.基于小波分析的变频调速电动机运行噪声-负载特性[J].华东理工大学学报(自然科学版),2006,32(1):81-84. |
| 作者姓名： | 王新 林家骏 杜庆楠 |
| 作者单位： | 1. 华东理工大学信息科学与工程学院,上海,200237;河南理工大学电气工程系,焦作,454100 2. 华东理工大学信息科学与工程学院,上海,200237 3. 河南理工大学电气工程系,焦作,454100 |
| 摘 要： | 分析了交-交变频器输出电压、电流和时间谐波磁势的谐波族特征,指出了该特征对电动机运行噪声的影响。提出了一种改进M allat算法,并运用该算法对运行噪声进行了小波分析。该算法的计算量和占用的存储空间较标准M allat算法均减少了49.6%。同时,运用基于小波分析的频带能量法提取运行噪声的特征。经实验验证:电动机负载增加,运行噪声的86~172H z频带能量呈现一致性增加,该频带能量可以作为反映负载变化的主要特征。 |
| 关 键 词： | 噪声 小波分析 故障诊断 变频调速 |
| 文章编号： | 1006-3080（2006）01-0081-04 |
| 收稿时间： | 2004-12-18 |
| 修稿时间： | 2004年12月18 |
Characteristics of Running Noise and Load of Motor Regulated by Frequency Converter Based on Wavelet Analysis |
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| WANG Xin,LIN Jia-jun,DU Qing-nan.Characteristics of Running Noise and Load of Motor Regulated by Frequency Converter Based on Wavelet Analysis[J].Journal of East China University of Science and Technology,2006,32(1):81-84. | |
| Authors: | WANG Xin LIN Jia-jun DU Qing-nan |
| Abstract: | The characteristics of harmonic cluster of output voltage, output current and time harmonic magnetic potential of AC-AC frequency converter is analyzed. The running noise of motor affected by the characteristics of harmonic cluster is pointed out. An improved Mallat algorithm is put forward. The running noise is analyzed by the wavelet analysis using the algorithm, calculating time and the using memory of the improved algorithm is less than that of the standard Mallat algorithm by 49.6%. The frequency band energy method based on the wavelet analysis is used for getting the characteristics of the running noise. The frequency band energy of the running noise in 86-172 Hz increases conformably as the load of motor increases. The above frequency band energy can be acted as the main characteristics for reflecting the load change of motor. |
| Keywords: | noise wavelet analysis fault diagnosis variable frequency speed regulation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |