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To make the elevator operates more smoothly and obtain quicker response speed, the traditional PID algorithm of elevator traction machine speed system needs to be improved. This paper adopts RBF neural network PID control algorithm to control the speed system of PMSM. The simulation results verify that the dynamic performances of PMSM have been improved. In addition, combined with the elevator speed...
PMSM has been used widely in elevator speed control system. Based on the mathematical model of PMSM and algorithm of inverter (CFPWM, SPWM, SVPWM), PMSM vector control systems are built. By the software of MATLAB/Simulink, the control systems using three inverter methods of CFPWM, SPWM, SVPWM are comparative simulated and analyzed. The results show that the oscillating of torque, speed, and magnetic...
The grey model GM (1, 1) is one of the important components in the grey systems theory system. According to the modeling mechanism of GM(1, 1) model, based on the analysis of the flaws of the existing grey model GM(1, 1) the method which consists of the most superior initial value, which is solved in the constraint that all components of GM(1, 1) modeling sequence X(1) fit smallest error sum of squares...
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