Liu Wenzhou

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Characterized by simple structure, stable operation and low production cost, switched reluctance motors (SRM) have a vast potential for application. An excessive running noise, however, is emitted due to their large torque ripple in running. The key to eliminating such noise is to limit the torque ripple in addition to optimization of the design of the(More)
PID-fuzzy adaptive yaw control algorithm is used and complete wind wheel position adjustment in order to automatically track the changes of wind direction. Input to the change of wind direction and wind direction, the output is k<inf>p</inf>, k<inf>i</inf> and k<inf>d</inf>, its fuzzy adaptive controller are designed. The simulation software used in this(More)
To cope with all power quality issues to be aroused from voltage sag, rise, transient power interruption and other disturbances of power distribution system, this article addresses a device designed to control the quality of power supply from power distribution net. Like inductor and capacitor, this device can be series connected to introduce a controllable(More)
In most of the power system of three (generation, transmission, substation), transformation is particularly important to the development of substation automation technology to highlight the need to also. This design use of PLC for the substation of the simulation module of the simulation was carried out in the collection, and monitoring interface to monitor(More)
As China national economy and technology are under rapid development, all industries are requesting better and better quality of electrical energy. Therefore, research on technology for quality regulation and control of electrical energy of power distribution network becomes first priority. The optimized algorithm of controller as stated in this article for(More)
A new method for extracting fingerprint minutiaes is proposed. After acquiring binary image, we thin the ridges and valleys respectively, and extract ridge bifurcations and valley bifurcations as the key minutiaes from the ridge thinned image and valley thinned image. The method is applied in fingerprint verification system about examinee, whose principle(More)
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