Novel microstepping technique for disc rotor type stepper motor drive

This paper describes the Design & Hardware implementation of bipolar micro stepping drive for disc rotor type stepper motor. Disc rotor type permanent magnet stepper motor imparts the advantages of higher torque at high speed, high torque to weight ratio, very low moment of inertia, high torque to inertia ratio, quick response, low power consumption and ironless rotor. The purpose of this paper is to propose & implement micro-stepping control of this disc rotor type stepper motor. The micro stepping control system improves the positioning accuracy and eliminates low speed ripple and resonance effects in a stepper motor drive. Hardware results indicate that the drive system has good characteristic and is quite simple, reliable & versatile.