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|Title:||Distributed fault estimation design of interconnected systems with external disturbances|
|Citation:||IET Control Theory and Applications, 2019; 13(3):377-386|
|Publisher:||Institution of Engineering and Technology|
|Ke Zhang, Bin Jiang, Peng Shi, Jeng-Shyang Pan|
|Abstract:||In this study, a new distributed fault estimation observer (DFEO) design method is proposed based on unknown input observer (UIO) for interconnected systems with external disturbances. The coupling terms among interconnected subsystems are utilised to construct DFEO. At the same time, according to the characteristics of UIO, external interference is completely decoupled to improve the robustness of fault estimation. Furthermore, the authors propose a multi-constraint design with robust H ∞ and regional pole configurations to analyse and design gain matrices of DFEO, which can be calculated using linear matrix inequalities. Furthermore, asymptotic estimation of sensor faults is discussed with the help of DFEO. Finally, a simulation of the interconnected system is provided to illustrate the effectiveness of the proposed technique.|
|Keywords:||Control system synthesis; fault diagnosis; interconnected systems; linear matrix inequalities; Lyapunov methods; matrix algebra; observers; robust control|
|Rights:||© The Institution of Engineering and Technology 2018|
|Appears in Collections:||Electrical and Electronic Engineering publications|
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