Research on Micro-Stepping Driving System of Three-Phase Hybrid Stepping Motor

摘要

Uniform constant amplitude rotating current vector subdivision and SVPWM technology are applied to micro-stepping driving system of three-phase hybrid stepping motor. Decompose the stator current vector of the stepping motor into the torque current and the magnetizing current, and then control the currents of decomposition, which makes the amplitude of the resultant stator current vector remain the same. Simulation results show that the designed micro-stepping driving system realizes equal stepper angle, constant torque, and arbitrary variable micro-stepping driving. The use of micro-stepping driving technology improves the stepping motor's control accuracy and stability, which promotes the application range of stepping motor and has good practical value.