Simplified Takagi-Sugeno fuzzy regulator design for stabilizing control of electromagnetic levitation system

Abstract

This paper presents a simplified yet an effective design of the Takagi-Sugeno (T-S) fuzzy regulator based on pole-placement approach. In this research, the designed regulator is implemented for a class of nonlinear and unstable Electromagnetic Levitation System (EMLS). The primary objective of the designed regulator is to maintain the position of the levitated object for a set of operating points without changing the regulator gains. Investigation reveals that the proposed regulator offers robust performance under the large variation of the operating conditions. The simulation results for the EMLS are presented to validate the performance effectiveness of the considered regulator design compared to the regulator designed by well-known LMI approach under the diversified operating conditions with or without enormous variations of the vertical payload disturbance.