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http://dx.doi.org/10.5391/JKIIS.2007.17.3.285

Robust Digital Redesign for Observer-based System  

Sung, Hwa-Chang (연세대학교 전기전자공학과)
Joo, Young-Hoon (군산대학교 전자정보공학부)
Park, Jin-Bae (연세대학교 전기전자공학과)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.17, no.3, 2007 , pp. 285-290 More about this Journal
Abstract
In this paper, we presents robust digital redesign (DR) method for observer-based linear time-invariant (LTI) system. The term of DR involves converting an analog controller into an equivalent digital one by considering two condition: state-matching and stability. The design problems viewed as a convex optimization problem that we minimize the error of the norm bounds between interpolated linear operators to be matched. Also, by using the bilinear and inverse bilinear approximation method, we analyzed the uncertain parts of given observer-based system more precisely, When a sampling period is sufficiently small, the conversion of a analog structured uncertain system to an equivalent discrete-time system have proper reason. Sufficiently conditions for the state-matching of the digitally controlled system are formulated in terms of linear matrix inequalities (LMIs).
Keywords
선형 시불변 시스템;관측기 기반 시스템;강인 디지털 재설계;선형 행렬 부등식;쌍 선형과 역 쌍 선형 근사 방법;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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