Robust Digital Implementation of Fuzzy Control for Uncertain Systems and Its Application to Active Magnetic Bearing System
Abbreviated Journal Title
Int. J. Control Autom. Syst.
Active magnetic bearing (AMB); intelligent digital redesign (IDR); linear matrix inequalities (LMIs); Pade and inverse-Pade approximation; Takagi-Sugeno (T-S) fuzzy model; TAKAGI-SUGENOS FORM; H-INFINITY CONTROL; PARAMETRIC UNCERTAINTIES; NONLINEAR-SYSTEMS; STABILIZATION CONDITIONS; LINEAR-SYSTEMS; REDESIGN; MODELS; PADE; Automation & Control Systems
In this paper, we propose the robust digital control for active magnetic bearing (AMB) systems. For achieving the robust stability, we deal with the uncertainties of the given system based on the Takagi-Sugeno (T-S) fuzzy model. Also, in order to solve the digital implementation for real plants, this paper presents a robust intelligent digital redesign (IDR) method. The term IDR involves converting an analog controller into an equivalent digital one in the sense of state-matching. The uncertainties in the plant dynamics is shown in the IDR condition by virtue of the pade and inverse-pade approximation method. Also, the robust stability property is preserved by the proposed method. The sufficient conditions for robust controller are obtained in terms of solutions to linear matrix inequalities (LMIs). Finally, simulation results for two AMB systems are demonstrated to visualize the feasibility of the proposed method.
International Journal of Control Automation and Systems
"Robust Digital Implementation of Fuzzy Control for Uncertain Systems and Its Application to Active Magnetic Bearing System" (2012). Faculty Bibliography 2010s. 2535.