Antidisturbance Control Design for Interval Type-2 Fuzzy Stochastic Systems With Input Quantization

被引:10
作者
Kavikumar, Ramasamy [1 ]
Kwon, Oh-Min [1 ]
Kaviarasan, Boomipalagan [1 ]
Sakthivel, Rathinasamy [2 ,3 ]
机构
[1] Chungbuk Natl Univ, Sch Elect Engn, Cheongju 28644, South Korea
[2] Bharathiar Univ, Dept Appl Math, Coimbatore 641046, India
[3] Sungkyunkwan Univ, Dept Math, Suwon 440746, South Korea
基金
新加坡国家研究基金会;
关键词
Antidisturbance control; disturbance observer; input quantization; IT2 fuzzy stochastic systems; FAULT-TOLERANT CONTROL; H-INFINITY; STABILIZATION; STATE;
D O I
10.1109/TFUZZ.2022.3215277
中图分类号
TP18 [人工智能理论];
学科分类号
081104 ; 0812 ; 0835 ; 1405 ;
摘要
Quantized antidisturbance control design problem is presented for a class of interval type-2 (IT2) fuzzy stochastic systems subject to time delays and multiple disturbances. The inherent uncertain nonlinear and hybrid characteristics of the concerned system make it difficult to design a stable antidisturbance controller. In order to properly reflect the characteristics of IT2 fuzzy stochastic models with multiple disturbances, a new fuzzy disturbance observer is proposed to estimate the disturbances generated by a fuzzy exogenous system. Furthermore, a quantized fuzzy antidisturbance control scheme is synthesized by fusing the estimation of the multiple disturbances. With the support of Lyapunov functional method, Ito's formula and auxiliary function-based integral inequality, the resulting IT2 fuzzy stochastic systems are proved to be robustly stochastically stable with mixed H-infinity/passivity performance index. The design methods of the fuzzy disturbance observer and quantized antidisturbance controller are formulated in the form of linear matrix inequalities so that the corresponding gain matrices can be easily obtained. Finally, simulation studies on three examples are provided to justify the efficiency of the designed control strategy.
引用
收藏
页码:1806 / 1818
页数:13
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