| 基于声信号三维谱分析的转子故障特征提取的实验研究 |
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| 引用本文： | 吴峰崎,孟光,孙旭,荆建平. 基于声信号三维谱分析的转子故障特征提取的实验研究[J]. 机械强度, 2006, 28(3): 424-428 |
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| 作者姓名： | 吴峰崎 孟光 孙旭 荆建平 |
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| 作者单位： | 上海交通大学,振动、冲击、噪声国家重点实验室,上海,200240;上海交通大学,振动、冲击、噪声国家重点实验室,上海,200240;上海交通大学,振动、冲击、噪声国家重点实验室,上海,200240;上海交通大学,振动、冲击、噪声国家重点实验室,上海,200240 |
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| 基金项目： | 中国科学院资助项目;国家科技攻关项目 |
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| 摘 要： | 对转子的一些典型故障（不平衡、松动、碰磨、不对中以及突加不平衡）进行试验模拟，对故障发生过程中的声信号采用声望话筒和十六通道索尼磁带记录仪进行采集的基础上，分析转子故障声信号的三维谱特性，提取和总结出由故障造成的声信号突变和对应的声谱特征。分析结果表明，采用声信号对转子的一些故障进行诊断是可行的。
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| 关 键 词： | 声信号 故障诊断 时频分析 转子 |
| 收稿时间： | 2004-05-09 |
| 修稿时间： | 2004-05-092004-06-28 |
FEATURE EXTRACTION BASED ON ACOUSTIC SIGNAL'S 3-D SPECTRUM ANALYSIS IN ROTOR MALFUNCTIONS |
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| WU FengQi,MENG Guang,SUN Xu,JING JianPing. FEATURE EXTRACTION BASED ON ACOUSTIC SIGNAL'S 3-D SPECTRUM ANALYSIS IN ROTOR MALFUNCTIONS[J]. Journal of Mechanical Strength, 2006, 28(3): 424-428 |
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| Authors: | WU FengQi MENG Guang SUN Xu JING JianPing |
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| Affiliation: | State Key Laboratory of Vibration, Shock and Noise, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | The acoustic signals of rotor in operation consist of plenty of information about its running condition and can be measured by not-contact devices. Therefore, it is necessary that fault diagnosis be based on acoustic signal in rotor. Some typical malfunctions (such as unbalance, looseness, rub, misalignment, abrupt unbalance) have been simulated by experiments.Acoustic signals have been received by BSWA Microphones and 16-channal Sony Tape Recorder, which are analyzed by 3-D spectrum. The abrupt changes in surging sound signals of rotor malfunctions can be detected and its fault spectrum features are shown in 3-D spectrum. The results indicate that the potential and feasibility of this approach as the diagnosis of rotor malfunctions. |
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| Keywords: | Acoustics signal Fault diagnosis Time-frequency analysis Rotor |
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