Fuzzy Strategy-based Position Control of Field-oriented PM-hybrid Stepping Motor

The paper deals with same research efforts focused to improve the dynamic performances of the PM-hybrid stepping motors, in order to try to keep competitive this incremental motion actuator in high performance industrial control applications too. Through application of the field-oriented control strategy of the AC drives for stepping motors a high dynamic servomotor is obtained, with similar performances of the DC motor ones. The robustness of the stepping motor regarding the strongly parameter and load torque variations with a specially designed fuzzy controller is achieved. The computer-aided simulations and laboratory experimental results prove the good dynamic response and high incremental motion precision of the motor.