电子测量与仪器学报

张楠,马超,许宝杰,徐小力.基于2D-MUSIC算法L型声阵列的轴承故障研究[J].电子测量与仪器学报,2020,34(1):121-127

基于2D-MUSIC算法L型声阵列的轴承故障研究

Research on bearing fault location based on L-type acoustic array based on 2D-MUSIC algorithm

DOI：

英文关键词:bearing fault diagnosis 2D-MUSIC algorithm L shaped sound array sound source localization

基金项目:中国科学院太空应用重点实验室开放基金（LSU-KFJJ-2018-07）资助项目

作者	单位
张楠	1.北京信息科技大学现代测控技术教育部重点实验室
马超	1.北京信息科技大学现代测控技术教育部重点实验室
许宝杰	1.北京信息科技大学现代测控技术教育部重点实验室
徐小力	1.北京信息科技大学现代测控技术教育部重点实验室

Author	Institution
Zhang Nan	1.Beijing Information Science &Technology University, The Key laboratory of Modern Measurement and Control Technology
Ma Chao	1.Beijing Information Science &Technology University, The Key laboratory of Modern Measurement and Control Technology
Xu Baojie	1.Beijing Information Science &Technology University, The Key laboratory of Modern Measurement and Control Technology
Xu Xiaoli	1.Beijing Information Science &Technology University, The Key laboratory of Modern Measurement and Control Technology

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中文摘要:

随着传感器阵列技术的发展，越来越多阵列技术用于设备的故障诊断研究中。针对设备中多滚动轴承诊断中故障的定性与定位问题，开展了基于2D MUSIC算法L型声阵列的轴承故障定位理论仿真研究，旨在进行阵列参数的优化。根据滚动轴承声学信号特性，进行L型麦克风阵列下利用2D MUSIC算法对双声源信号进行仿真计算，通过改变信噪比、阵元间距以及阵元数量等参数进行仿真分析，确定最优声阵列参数。仿真结果表明，在两个信号源确定的情况下，通过优化阵列参数可以提高其故障定位分辨率并对声源定位系统进行优化。研究对于有轨机车多轴承驱动系统轴承故障的快速定位和实时诊断技术有较好的理论指导意义。

英文摘要:

With the development of sensor array technology, more and more array technology is used in the fault diagnosis research of equipment. In this paper, based on the fault characterization and positioning problem in multi rolling bearing diagnosis in equipment, a theoretical study on bearing fault location theory based on 2D MUSIC algorithm L type acoustic array is carried out. The main purpose of the research is to optimize the array parameters. According to the acoustic signal characteristics of the rolling bearing, the 2D MUSIC algorithm is used to simulate the dual source signal under the L type microphone array. Then, by changing the parameters of SNR, array spacing and array number, the optimal acoustic array parameters are determined. The simulation results show that, under the condition that the two signal sources have been determined, by optimizing array parameters, fault location resolution can be improved and sound source location system can be optimized. The research has a good theoretical guiding significance for the rapid positioning and real time diagnosis technology of bearing faults in multi bearing drive systems of rail locomotives.

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