High-Torque Microstep Drive of a Two-Phase Stepping Motor

Abstract

In this work, the authors suggest the use of a new waveform of exciting current for microstep drive of a two-phase stepping motor. In the derivation of the waveform, maximization of torque produced by the motor and equalization of the intervals of microsteps are taken into account. The advantage of this driving method is demonstrated by measuring the positional error, the speed-resonance characteristic and the speed-torque characteristic.