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首页> 外文期刊>IEEE Transactions on Energy Conversion >Electric Machine Bearing Health Monitoring and Ball Fault Detection by Simultaneous Thermo-Mechanical Fibre Optic Sensing
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Electric Machine Bearing Health Monitoring and Ball Fault Detection by Simultaneous Thermo-Mechanical Fibre Optic Sensing

机译：电机轴承健康监测和球形故障检测同时热机械光纤感应

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摘要

This article reports the use of fiber Bragg grating (FBG) sensors for electric machines' in-service bearing condition monitoring. The proposed method enables simultaneous extraction of thermal and mechanical information on the bearing operational status for health monitoring and fault diagnosis purposes. The work first reports the instrumentation, calibration and the measurements interpretation methods of an FBG array sensor fitted to the drive-end bearing of an operating inverter driven induction motor. Experimental tests are then undertaken on a purpose build test rig to evaluate the proposed in-situ sensing scheme's performance under healthy and faulted bearing conditions. The results demonstrate that the measurements acquired by individual FBG sensors fitted in the bearing architecture contain concurrent thermal and mechanical information, which can be clearly differentiated to enable understanding of the examined motor bearing's thermal only and mechanical only operating conditions. Furthermore the in-situ measurements obtained in fault conditions are shown to contain clearly defined time and frequency domains fault signatures, which can enable unambiguous fault diagnosis and trending.
机译：本文报告了使用光纤布拉格光栅（FBG）传感器用于电机的在线轴承状态监测。该方法可以同时提取关于健康监测和故障诊断目的的轴承操作状态的热和机械信息。该工作首先报道了安装在操作逆变器驱动的感应电动机的驱动端轴承的FBG阵列传感器的仪器，校准和测量解释方法。然后在目的的构建试验台上进行实验测试，以评估建议的原位传感方案在健康和断层轴承条件下的性能。结果表明，由轴承架构中装配在轴承架构中的各个FBG传感器所获得的测量包含并发热和机械信息，这可以清楚地区分以实现对所检查的电动机轴承的热量和机械仅机械的操作条件。此外，在故障条件下获得的原位测量值被示出包含明确的定义时间和频率域故障签名，这可以实现明确的故障诊断和趋势。

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