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A bearingless motor (BM) is an electrical machine with a built-in magnetic bearing element. The stator of the machine is fitted with two sets of windings with different pole-pair numbers, and the pole-pair numbers must be consecutive. The principle of BMs can be applied to most of the conventional motor types, i.e., reluctance motors, induction motors, and permanent magnet synchronous motors (PMSMs),...
The paper presents an effective and efficient method for sensor fault detection and identification within a large group of sensors based upon hierarchical cluster analysis. Fingerprints of the hierarchical clustering dendrograms are found for normal operation using normalized data, and sensor faults are detected through cluster changes occurring in the dendrogram. The proposed strategy is built into...
This work demonstrates a novel control strategy for the drive mode of a MEMS gyroscope using ascending frequency drive with AGC-2DOF PID controller instead of resonant frequency drive. It can suppress the electrical coupling from the drive electrodes to the sense electrodes, reduce the low frequency noise and improve the transient response by using 2DOF PID controller. Test results indicate the electrical...
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