In-Situ Thermal and Mechanical Fibre Optic Sensing for In-Service Electric Machinery Bearing Condition Monitoring

A. Mohammed, S. Djurović
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引用次数: 10

Abstract

This paper reports a feasibility study of fibre Bragg Grating (FBG) sensing application for simultaneous extraction of thermal and mechanical information on electric machine bearings operational status for condition monitoring purposes from the same optical sensing head. The underlying aim is to examine the potential of using the readings from a single FBG head embedded in the bearing structure to infer information on both thermal and mechanical operating conditions observed at sensor location. To this end, experiments were undertaken on an FBG instrumented drive-end bearing of an operating inverter driven squirrel cage induction motor. Key features of the in-situ FBG sensor design, installation and calibration procedures along with the analysis of the obtained experimental measurements are reported. It is shown that the acquired measurements contain concurrent thermal and mechanical information that can be distinguished to enable understanding of the examined motor bearing thermal only and mechanical only operating conditions.
用于在役电机轴承状态监测的原位热与机械光纤传感
本文报道了光纤布拉格光栅(FBG)传感应用于从同一光学传感头同时提取电机轴承运行状态的热信息和机械信息以用于状态监测的可行性研究。潜在的目的是研究使用嵌入在轴承结构中的单个FBG头的读数来推断在传感器位置观察到的热和机械操作条件的信息的潜力。为此,在运行中的逆变器驱动鼠笼式异步电动机的驱动端轴承上进行了FBG仪表实验。本文报道了原位FBG传感器设计、安装和校准过程的主要特点,并对获得的实验测量结果进行了分析。结果表明,所获得的测量数据包含热与机械的并发信息,这些信息可以被区分开来,从而能够理解所检查的电机轴承仅热和仅机械的运行条件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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