| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程技術研究所 === 86 === This dissertation is concerned with the development of microprocessor(80196MC)based speed sensorless rotor flux-oriented control of induction motor. In orderto reduce the circuit component, the command voltage rather than the feedbackvoltage is used along with the feedback current of the induction motor tocalculate the magnitude and position of the rotor flux for speed estimation. The induction motor speed control system is composed of a speed controller,two current controllers, a flux controller, a sinusoidal pulse-width modulatedinverter, a flux estimator and a speed estimator. A sliding mode proportional-integral control is proposed for the speed controller to yield fast response andsmall overshoot. Simulations and experiments are given to verify the analysisand the practicality of the system.
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