Dynamic Magnetic Field Measurement in the Air Gap of Magnetic Bearings Based on FBG-GMM Sensor

다국어 초록 (Multilingual Abstract)

Magnetic field in magnetic bearings is the physical medium to realize magnetic levitation, the distributionof the magnetic field determines the operating performance of magnetic bearings. In this paper, a thin-sliceFiber Bragg Grating-Giant Magnetostrictive Material magnetic sensor used for the air gap of magneticbearings was proposed and tested in the condition of dynamic magnetic field. The static property of thesensor was calibrated and a polynomial curve was fitted to describe the performance of the sensor.
Measurement of dynamic magnetic field with different frequencies in magnetic bearings was implemented.
Comparing with the finite element simulations, the results showed the DC component of the magneticfield was detected by the sensor and error was less than 5.87%

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