Abstract
This study introduces delay independent decentralized guaranteed cost control design method based on two controller structures for nonlinear uncertain interconnected large scale systems with time delays. First, a set of equivalent Takagi-Sugeno (T-S) fuzzy models are extended to represent the systems. Then a decentralized state-feedback guaranteed cost performance controller is proposed for the fuzzy systems. Based on delay independent Lyapunov functional approach, some sufficient conditions for the existence of the controller can be cast into the feasible problem of LMIs irrespective of the sizes of the time delays so that the system can be asymptotically stabilized for all considered uncertainties whose sizes are not larger than their bounds. Finally, the minimizing approach is proposed to search the suboptimal upper bound value of guaranteed cost function. Moreover, the corresponding conditions are extended into the generalized dynamic output-feedback close-loop system. Finally, the better control performances of the proposed methods are shown by the simulation examples.
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Recommended by Editorial Board member Ju Hyun Park under the direction of Editor Young Il Lee. This work is supported by the National Science Foundation of China under Grant 60874023 & 60974078 and the National Science Foundation of Hebei Province under Grant F2010001318.
Chun-Xia Dou received her B.S., M.S. and Ph.D. degrees from the Yanshan University, Qinhuangdao, China. She is currently a postdoctoral student at College of Engineering, Peking University, Beijing, China and is also a professor at the Institute of Electrical Engineering, Yanshan University. Her research interests include nonlinear robust control, adaptive control, fuzzy control, stability of wide-area power systems.
Zhi-Sheng Duan received his B.S. degree from the Inner Mongolia Normal University, an M.S. degree from Inner Mongolia University, and a Ph.D. degree from Peking University, Beijing, China. He is currently a professor at State Key Laboratory for Turbulence and Complex Systems and Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing, China. His research interests include stabilization of interconnected systems and robust control for complex large systems.
Xing-Bei Jia is currently pursuing a M.S. in the Institute of Electrical Engineering, Yanshan University, Qinhuangdao, China. Her research interests include nonlinear robust control, adaptive control, and transient stability control for power systems.
Pei-Feng Niu received his B.S. and M.S. degrees from the Northeast Electric Power University, Jilin, China, and his Ph.D. degree from Northeast University, Shenyang, China. He is currently a professor at the Institute of Electrical Engineering, Yanshan University, Qinhuangdao, China. His research interests include nonlinear robust control, adaptive control, fuzzy control, stabilization of large scale power systems.
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Dou, CX., Duan, ZS., Jia, XB. et al. Study of delay-independent decentralized guaranteed cost control for large scale systems. Int. J. Control Autom. Syst. 9, 478–488 (2011). https://doi.org/10.1007/s12555-011-0307-z
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DOI: https://doi.org/10.1007/s12555-011-0307-z