Current sensorless position-tracking control with angular acceleration error observers for hybrid-type stepping motors

Abstract

This paper exhibits an advanced observer-based position-tracking controller for hybrid-type stepping motors with consideration of parameter and load uncertainties. As the main contribution, a current sensorless observer-based pole-zero cancellation speed controller is devised for the outer loop position-tracking controller including the convergence rate boosting mechanism. The features of this study are summarized as follows; first, the pole-zero cancellation angular acceleration error observer for the inner loop speed controller, second, the pole-zero cancellation speed control forcing the order of the controlled speed error dynamics to be 1, and, third, the outer loop position control incorporating the first-order target tracking system with its convergence rate booster. The resultant effectiveness is verified on a 10-W stepping motor control system.

Variable Bandwidth Technique-Based Current Control for Permanent Magnet Synchronous Motors

“…The permanent magnet synchronous motor (PMSM) has been considered as a promising solution to induction motors (IMs) and DC motors due to their high efficiency and simple structure. These advantages have widened their applications such as tension controls, electric power steering (EPS), home appliances, electric vehicles, and so on [1][2][3][4][5] .…”