Fengxing Zhou

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The impulse signal is contained in the fault signals of some pivotal components such as gears and axletrees. Extracting weensy impact information is an important method to diagnose equipment. A mathematical model on the technology of resonant demodulation is put forward in this paper. The model provides the theoretical basis on how to use the technology to(More)
Position control is a typical application of linear servo system. In this paper, to reduce the system overshoot, an integral plus proportional (IP) controller is used in the position control implementation. To further improve the control performance, a gain-tuning IP controller based on a generalized predictive control (GPC) law is proposed. Firstly, to(More)
When bearing faults occur in induction motor fed with variable frequency power, some fault related characteristic components appear in the stator current. But these components are often submerged by the strong fundamental component of the power supply during the dynamic speed regulation process. In this paper, an approach based on generalized demodulation(More)
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