The application of a disturbance observer (DOB) and a variable structure controller (VSC) to
current control of microstep** for permanent-magnet stepper motors (PMSMs) is studied …

We present a new approach to position control based on microstep** for the current
regulation of permanent magnet stepper motor (PMSM), which consists of a Lyapunov …

Step** motors are widely used in robotics and in the numerical control of machine tools to
perform high precision positioning operations. The classical closed-loop control of the …

This study addresses the position-tracking problem for hybrid-type stepper motors in the
rotational dq coordinate system. The proposed controller aims to govern position behavior …

In previous methods designed based on field oriented (and/or weakening) control, high
performance of current control is required for position control of permanent magnet (PM) …

This paper exhibits an advanced observer-based position-tracking controller for hybrid-type
step** motors with consideration of parameter and load uncertainties. As the main …

In this paper, a position detection method using only current feedback is proposed for
permanent magnet stepper motors. Using the Lyapunov stability analysis of microstep** …

This paper presents an intelligent strategy, based on the combination of the fuzzy logic and
imperialist competitive algorithm (ICA), to cope the problem of speed tracking in stepper …

Excellent attributes of permanent magnet stepper motor (PMSM) make it prominent in
robotic, aerospace, and numerical machine applications. However, the problem of …

Precise control of the stepper motor has always been a topic of interest and also a
challenging issue among control engineering researchers due to the nonlinear nature of the …