Condition Monitoring and Failure Prediction of Gear Rotation Using a Contactless RF Magnetic Sensor
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Development of sensor devices that can precisely detect small tilt angles of an anomalously rotating gear is in great demand for real-time condition monitoring and predictive maintenance of gear-based machines. The utility of a high-frequency giant magnetoimpedance (GMI)-based sensor for real-time monitoring of a rotating gear has been demonstrated. The rotation speed and tilt position of a magnetically labeled rotating gear were measured remotely from a distance of 14 cm. Small changes in magnetic field, down to mOe level, were detected using an optimized Co69.25Fe4.25Si13B12.5Nb1 microwire sensor. The sensing element exhibited remarkable field sensitivity (\( \eta \)) and GMI ratio of 230%/Oe and 300%, respectively. This contactless magnetic sensor is useful for future development of real-time condition monitoring and predicting failure of a rotating object.
KeywordsGear rotation monitoring Co-based microwire magnetoimpedance magnetic sensors
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Research at USF was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. DE-FG02-07ER46438 (GMI studies and sensor tests). Research at Harbin Institute of Technology was supported by the National Natural Science Foundation of China (NSFC) under Grant No. 51671071 (microwire fabrication and MFM).
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