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A minimum current control based on look up table off-line method of permanent-magnet synchronous motor (PMSM) is proposed. This control method establish the assemble corresponding relationship of torque and voltage firstly, and then choose the one which bring the minimum current. Advantages of this method are response quickly, reduce capacitance of inverter and reduce copper loss.
Through the analysis of the behavior of mandatory lane changing and selectivity lane changing, this paper researches the effects of capacity of urban intersection, delays and the probability of rear-end collision resulting from the lane-changing behavior. The models of capacity, delay time and probability of rear-end collision are established respectively, and simulated delay is evaluated based on...
Present a method for computing the embedded depth in rock of the laterally loaded rock-socketed piles. The method, based on the Hoek-Brown failure criterion, takes into account the mobilized lateral shear resistance along the bond of perimeter of the pile in rock. The proposed method is verified to be more reasonable by comparing its result with that of other existing methods.
Numerical simulation was used to analyze three dimensional combustion flow for the annular combustor of a gas turbine. As to structure characteristic of gas Turbine combustor, the real combustion camber geometry with detailed features is represented. Numerical results for the reacting flow were obtained based on SIMPLE algorithm. the realize k -ε turbulence model, discrete ordinates method radiation...
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