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Design of PMSM control system based on fuzzy logic

To minimize the ripples of the torque and flux linkage and to fix the variable switching frequency produced in the conventional direct torque control (DTC) system for permanent magnet synchronous motors (PMSM), the fuzzy controller was introduced into the PMSM DTC, and a PMSM Fuzzy DTC system based on DSP TMS320LF2407 was implemented. Experimental results show that the proposed Fuzzy DTC system has lower ripples of the electromagnetic torque and flux linkage, fast response and good robustness for variable parameters and constant switching frequency.