| 基于小波包能量熵的钢轨波磨检测方法 |
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| 引用本文： | 董伟,黄文,邢宗义,龙静.基于小波包能量熵的钢轨波磨检测方法[J].铁道标准设计通讯,2018(1):52-58. |
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| 作者姓名： | 董伟 黄文 邢宗义 龙静 |
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| 作者单位： | 南京理工大学机械工程学院;南京理工大学自动化学院;广州地铁集团有限公司运营总部; |
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| 摘 要： | 针对目前轨道波浪型磨损检测效率慢、成功率低等问题,提出一种基于小波包能量熵的轨道波磨检测技术。首先建立轨道波磨简化模型及车辆集总化参数模型并搭建SIMPACK仿真动力学模型,其次创新性地将小波包和能量熵相结合应用在轨道波磨检测领域,再通过仿真模型得到不同波磨分组下的轴箱振动响应,然后对振动加速度信号进行4层小波包分解并计算各节点的小波包能量和小波包能量熵,最后通过对比分析仿真结果确定轨道波磨故障类型。
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| 关 键 词： | 钢轨 波浪型磨损 故障诊断 轴箱振动加速度 小波包 能量熵 |
A Rail Corrugation Detection Method Based on Wavelet Packet-energy entropy |
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| Affiliation: | ,School of Mechanical Engineering,Nanjing University of Science and Technology,School of Automation,Nanjing University of Science and Technology,Guangzhou City Underground Railway Corporation |
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| Abstract: | Aiming at the problem of low efficiency and low success rate in rail corrugation detection,a method based on wavelet packet-energy entropy is proposed. Firstly,physical fitting models of rail corrugation and the train are established and a coupling dynamics model is set up based on SIMAPCK.Then wavelet packet-energy entropy is introduced creatively in the area of rail corrugation detection.Furthermore,four-layer wavelet packet decomposition of the axle box vibration acceleration signal is performed,and wavelet pocket-energy entropy and wavelet energy of each nod are calculated. Finally the simulation results are compared and analyzed to determine the type of rail corrugation. |
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| Keywords: | Rail Corrugation Fault diagnosis Axis box vibration acceleration Wavelet packet Energy entropy |
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