| Summary: | 碩士 === 國立聯合大學 === 電機工程學系碩士班 === 104 === The purpose of this thesis is toimplementaset of three-phaseinduction motor drive system,and to develop the speed estimation method andthe five controlmethodswithout shaft sensor based on digital signal processor(DSP).Firstly, the three-phase induction motor mathematical model is constructured.Secondly, the drive system is implemented. Then, the space vector pulse-width-modulation (SVPWM) technology is applied in the three-phaseinduction motor drive systemby using DSP control system. In addition, the estimation method of rotor speed is developed the use of sensing voltages, currentsand zero-cross points to achieve the speed closed-loop control of the three-phaseinduction motor drive system without shaft sensor. Furthermore, the incremental proportional-integral (PI) controller, the fuzzy controller, the fuzzy theory gain-tuning PI controller, the sliding-mode controller, and the fuzzy sliding-mode controller are proposed. Finally, comparisonsof various control performances in the five kinds of controllers viathesimulated and experimental results are demonstrated to verify the effectiveness of the control system.
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