| Summary: | 碩士 === 健行科技大學 === 電機工程系碩士班 === 104 === The purpose of this paper is to apply variable domain fuzzy control theory to the control of a sensorless direct torque controlled induction motor. The torque and flux controllers designed by, variable domain fuzzy control theory can obtain higher control accuracy, because domain stretching equivalent to increasing the number of inference rules, as compared to traditional fuzzy logic control. To reduce the motor speed and torque ripple, the direct torque control based on voltage space vector modulation technique is used. To achieve induction motor control without a speed sensor, a reactive power method is utilized to design the speed estimator, and then complete the overall design of speed sensorless induction motor drive control system
To verify the effectiveness of the proposed method, the Matlab/Simulink software and the PC-based real time motor development system are used, respectively, to carry out computer simulation and experimental verification. Both simulation and experimental results show that steady-state and transient response can meet the performance expectations.
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