The Research of Induction Motor DTC Systems Based on Fuzzy Observer

Direct torque control of induction motor is a kind of high performance of AC drive control method, the method of space vector analysis is the applied, The stator magnetic field, directly on the electromagnetic torque motor stator flux and control. But the change of the stator resistance will affect the performance of direct torque control system when the motor at the low speed This paper describes a method based on fuzzy control theory of the stator resistance fuzzy observer direct torque control system. its structure is simple and the observation of the flux linkage is accurate. We build the experiment system with the control chip TMS320LF2407 which is manufactured by TI Company. Through the experiment, it shows a good control effect.