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|Title: ||Fuzzy combination of fuzzy and switching state-feedback controllers for nonlinear systems subject to parameter uncertainties|
|Authors: ||Lam, H. K.|
Leung, Frank H. F.
|Subjects: ||Fuzzy combination|
|Issue Date: ||Apr-2005 |
|Citation: ||IEEE transactions on systems, man, and cybernetics. Part B, Cybernetics, Apr. 2005, v. 35, no. 2, p. 269-281.|
|Abstract: ||This paper presents a fuzzy controller, which involves a fuzzy combination of local fuzzy and global switching state-feed-back controllers, for nonlinear systems subject to parameter uncertainties with known bounds. The nonlinear system is represented by a fuzzy combined Takagi-Sugeno-Kang model, which is a fuzzy combination of the global and local fuzzy plant models. By combining the local fuzzy and global switching state-feedback controllers using fuzzy logic techniques, the advantages of both controllers can be retained and the undesirable chattering effect introduced by the global switching state-feedback controller can be eliminated. The steady-state error introduced by the global switching state-feedback controller when a saturation function is used can also be removed. Stability conditions, which are related to the system matrices of the local and global closed-loop systems, are derived to guarantee the closed-loop system stability. An application example will be given to demonstrate the merits of the proposed approach.|
|Rights: ||© 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.|
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|Type: ||Journal/Magazine Article|
|Appears in Collections:||EIE Journal/Magazine Articles|
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