Hierarchical intelligent sliding mode control: Application to stepper motors

Abstract

In this paper, one method of robust control based on sliding mode and fuzzy logic techniques is presented. It combines hierarchical high gain control with fuzzy logic to design a discontinuous control for nonlinear multivariable systems in order to eliminate chattering in presence of disturbances. The proposed approach is then used to design a robust controller for a stepper motor. Simulation results are presented to illustrate the applicability of the approach.