| k阶循环矩解调用于滚动轴承故障特征提取 |
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| 引用本文： | 谢明祥,杨富春,周晓军. k阶循环矩解调用于滚动轴承故障特征提取[J]. 振动、测试与诊断, 2011, 31(2): 139-143 |
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| 作者姓名： | 谢明祥 杨富春 周晓军 |
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| 作者单位： | 1. 浙江大学流体传动及控制国家重点实验室,杭州,310027;南昌工程学院机械与电气工程学院,南昌,330099
2. 浙江大学流体传动及控制国家重点实验室,杭州,310027 |
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| 基金项目： | 流体传动与控制国家重点实验室开放基金 |
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| 摘 要： | 针对滚动轴承早期故障诊断中故障特征信号提取问题,提出了一种基于k阶循环矩的故障特征信号解调方法.在循环矩理论基础上,首先分析了时变调幅信号的k阶循环矩解调原理和方法;讨论了k阶循环矩的频率特性;得出了k阶循环矩不仅能解调出调制频率,还能解调出载波频率的规律;给出了k阶循环矩的计算方法,并利用仿真信号验证了该方法的有效性;最后通过滚动轴承振动信号进行了分析.结果表明,该方法能有效提取滚动轴承早期故障特征,识别故障类型,具有较高的可信度.
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| 关 键 词： | 故障诊断 循环矩 解调分析 轴承 |
Fault Feature Extracting for Rolling Bearing Based on kth-Order Cyclic Moment |
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| Xie Mingxiang,Yang Fuchun,Zhou Xiaojun,Wei Yanding. Fault Feature Extracting for Rolling Bearing Based on kth-Order Cyclic Moment[J]. Journal of Vibration,Measurement & Diagnosis, 2011, 31(2): 139-143 |
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| Authors: | Xie Mingxiang Yang Fuchun Zhou Xiaojun Wei Yanding |
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| Affiliation: | Xie Mingxiang1,2,Yang Fuchun1,Zhou Xiaojun1,Wei Yanding1 (1The National Key Laboratory of FPTC,Zhejiang University Hangzhou,310027,China) (2School of Mechanical Electrical Engineering,Nanchang Institute of Technology Nanchang,330099,China) |
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| Abstract: | An approach based on kth-order cyclic moment was presented to deal with the fault feature extracting of the rolling bearing in incipient fault diagnosis.Firstly,based on cyclic statistics theory,the demodulation characteristics of the kth-order cyclic moment for time-varying amplitude modulation signal was studied,and the frequency characteristics were discussed.It was pointed out that kth-order cyclic moment could demodulate out the modulation frequency information,and obtain the carrier wave frequency inf... |
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| Keywords: | fault diagnosis cyclic moment demodulation analysis bearing |
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