Title

Robust Digital Implementation Of Fuzzy Control For Uncertain Systems And Its Application To Active Magnetic Bearing System

Keywords

Active magnetic bearing (AMB); Intelligent digital redesign (IDR); Linear matrix inequalities (LMIs); Pade and inverse-Pade approximation; Takagi-Sugeno (T-S) fuzzy model

Abstract

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. © ICROS, KIEE and Springer 2012;.

Publication Date

6-1-2012

Publication Title

International Journal of Control, Automation and Systems

Volume

10

Issue

3

Number of Pages

603-612

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1007/s12555-012-0318-4

Socpus ID

84865974777 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84865974777

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