| Popis: |
Due to the multi-variable, strong coupling, nonlinear and time-varying characteristics of induction motor, it is not easy for Direct Torque Control?DTC? system with traditional PID controller to get ideal performance. In order to improve the performance of Direct Torque Control system, a fuzzy PID regulator of motor speed is proposed to adjust the nonlinear control variable. According to the principle of DTC, a model of induction motor DTC system with fuzzy PID regulator is constructed and simulation is implemented. In comparison with the traditional PID regulator, the simulation shows that the fuzzy PID regulator is more effective in improving the speed response and the stability of DTC system. |
