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Showing papers by "Chun-Hsiung Fang published in 2011"


Proceedings Article
27 Oct 2011
TL;DR: The robust local regularity and controllability problem for the Takagi-Sugeno fuzzy descriptor systems is studied and a sufficient criterion is proposed to preserve the assumed properties when the structured parameter uncertainties are added into the nominal TS fuzzy descriptors.
Abstract: The robust local regularity and controllability problem for the Takagi-Sugeno (TS) fuzzy descriptor systems is studied in this paper. Under the assumptions that the nominal TS fuzzy descriptor systems are locally regular and controllable, a sufficient criterion is proposed to preserve the assumed properties when the structured parameter uncertainties are added into the nominal TS fuzzy descriptor systems. The proposed sufficient criterion can provide the explicit relationship of the bounds on parameter uncertainties for preserving the assumed properties.

2 citations


Proceedings ArticleDOI
27 Jun 2011
TL;DR: This problem of uncertain continuous T-S fuzzy systems is investigated by considering the multiple Lyapunov function and utilizing the non-PDC controller, and sufficient conditions for ensuring certain H2 cost as well as asymptotical stability are derived and expressed in terms of LMIs.
Abstract: In this paper, the H 2 guaranteed cost control problem of uncertain continuous T-S fuzzy systems is investigated. We approach this problem by considering the multiple Lyapunov function and utilizing the non-PDC controller. Sufficient conditions for ensuring certain H 2 cost as well as asymptotical stability are derived and expressed in terms of LMIs. Unlike existing approaches, the assumption of known upper bounds on the time derivative of membership functions, which is quite unrealistic, is not required anymore in the present one. Numerical examples are also given to demonstrate our approach has lower H 2 guaranteed cost as well as control force in comparison with the existing ones.

1 citations