Journal
IEEE TRANSACTIONS ON FUZZY SYSTEMS
Volume 27, Issue 4, Pages 816-823Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TFUZZ.2019.2898161
Keywords
Discrete-time; interval observer; L-infinity norm-based approach; Takagi-Sugeno system
Funding
- National Natural Science Foundation of China [61773145]
- Science and Technology Development Plan Project of Shandong Province [2016JMRH0217]
- National Defense Key Discipline of Space Exploration, Landing and Reentry inHarbin Institute of Technology [HIT.KLOF.2018.073]
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This paper proposes a novel interval observer design method for discrete-time Takagi-Sugeno fuzzy systems with parametric uncertainty. disturbances. and measurement noise. We present a new structure of interval observer with more design parameters, which can be used to broaden the application scope of interval observer design. For improving the accuracy of interval estimation, an L-infinity norm-based approach is used in the design of interval observer to attenuate the effect of the unknown disturbances, noise. and parametric uncertainty. Furthermore, the design conditions are formulated into a set of linear matrix inequalities, which can be efficiently solved. Numerical simulations are given to illustrate the effectiveness of the proposed method.
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