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This paper is concerned with the design of a fault estimation scheme with component fault and sensor noise for the three-phase inverter of high-speed trains. To design the component fault estimation observer, the three-phase inverter system states are augmented with the disturbance treated as new states, leading to an augmented and singular system. The observer is designed to generate the needed residual...
This paper addresses the fault estimation problem for discrete-time dynamic systems. First, using a specific system decomposition, we propose a new reduced-order fault estimation observer (RFEO) with multiconstrained idea. A detailed discussion of the RFEO is given. Then, with the help of the slack-variable technique, fault estimation performances are further enhanced to reduce the conservatism generated...
This paper studies the problem of robust fault estimation (FE) observer design for discrete-time Takagi-Sugeno (T-S) fuzzy systems via piecewise Lyapunov functions. The objective of this paper is to present a framework of the FE observer with less conservatism. First, under the multiconstrained design, an augmented FE observer (AFEO) is proposed to achieve FE for discrete-time T-S fuzzy models. Furthermore,...
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