Li Hongfeng

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The fuzzy PID controller is proposed to improve the performance of the network pressure-superposed water supply (NPSWS) system. Taking the pump as the load of the asynchronous motor, the whole system can be simplified as a second-order model. On the basis of the model, fuzzy rules are designed to complete on-line parameters adjustments of PID controller.(More)
The analysis of the eddy current loss in the permanent magnet (PM) is an important research topic of the PM spherical motor. The PM eddy current loss can lead to the increase of PM temperature and the change of magnetism, and these will decrease the efficiency of the motor and deteriorate its performance. Firstly, this paper does the eddy current loss(More)
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