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The electric driving speed regulation strategy is studied based on vector control of asynchronous motor by the mine hoist working characteristic. The vector control principle and the mathematic model of asynchronous motor are analysed. The dsPIC30F6010 is used as controlling center and the variable frequency speed regulation system of vector control is designed. The vector control technology of asynchronous...
It has enormous development with the wavelet theory applied to image edge detection for its well properties of multi-scale edge detection. The traditional wavelet algorithm has bad sensitive to direction properties that applied to analysis image edge detection, and it is the major disadvantage. So the traditional wavelet about this is improved and puts forward a kind of new wavelet transform algorithm...
The present work investigates the chaotic response of a nonlinear two-degree-of-freedom ground vehicle model. The disturbances from the road are assumed to be pyramidal wave and multifrequency. Numerical results show that the responses of the vehicle model could be chaotic. The routes from quasi-periodic, period-doubling with Neimark-Sarker bifurcation, period-doubling, leading to chaos, respectively,...
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