Numerical Study On Frequency Limitation Of Sensing Signal For Maglev Rotor Displacement
SENSORS AND MATERIALS(2020)
摘要
A simplified electromagnetic analysis procedure was introduced in this work to investigate the sensorless method of high-frequency injection for the displacement of a maglev rotor. Since the 3D model of electromagnets and the spindle, and the external circuits were all loaded into a single finite-element analysis (FEA) platform, the accuracy of simulation results can be significantly improved. Twenty cases were designed and considered to study the influence of the signal amplitude and frequency on the sensing performance. In addition, preliminary discussions regarding the frequency ranges of the sensing signal, the influence of the control command on the sensing signal, and the detection speed of the spindle displacement are included.
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关键词
active magnetic bearing, self-sensing, numerical analysis, signal injection, sensorless
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