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An iris recognition method based on two-dimensional weighted principal component analysis (2DWPCA) and adaptive artificial neural network is proposed. As different iris region contains different recognition information, different weighting value is allocated to different region after compensating illumination intensity of the image in preprocessing. The two-dimensional principal component analysis...
Based on the mathematical model of permanent magnet synchronous motor (PMSM), a novel method of modeling PMSM control system has been proposed. The control system adopts the double loops method. In the system, a PI controller is adopted in the speed loop and a PWM current controller is adopted in the current loop. After that, the simulink results of the power losses in IGBTs in different carry frequencies...
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