| Summary: | 碩士 === 國立中正大學 === 電機工程研究所 === 107 === The main purpose of this thesis is to design and implement speed and current controllers of the permanent-magnet synchronous motor (PMSM) using interval type-2 (IT2) Takagi-Sugeno (T-S) fuzzy control systems. IT2 T-S fuzzy control systems enable the PMSM with good speed tracking capability and load variation regulating ability. First, the system state equations of the PMSM are established. The error integral term is added in the extended state space models to ensure speed tracking and d-axis current converging to zero. Next, the IT2 T-S fuzzy control is adopted in driving controls. The controller is designed based on the concept of parallel distributed compensation (PDC). The system stability is analyzed using Lyaponov theorem. Finally, the IT2 T-S fuzzy controller is realized by obtaining the controller gains through Linear Matrix Inequality (LMI). The hardware configuration, auxiliary circuits and software scheme are introduced in this thesis. The switches of the inverter are driven by space vector pulse width modulation (SVPWM). All of the controls are digitally realized with a microcontroller.
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