FUZZ-IEEE'09 Proceedings of the 18th international conference on Fuzzy Systems
Set-membership fuzzy filtering for nonlinear discrete-time systems
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
IEEE/ACM Transactions on Computational Biology and Bioinformatics (TCBB)
Observer-based fault-tolerant control against sensor failures for fuzzy systems with time delays
International Journal of Applied Mathematics and Computer Science
Sensor faults observer design with H∞ performance for non-linear T-S systems
International Journal of Automation and Computing
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A novel fuzzy-observer-design approach is presented for Takagi-Sugeno fuzzy models with unknown output disturbances. In order to decouple the unknown output disturbance, an augmented fuzzy descriptor model is constructed by supposing the disturbance to be an auxiliary state vector. A fuzzy state-space observer is next designed for the augmented fuzzy descriptor system, and the simultaneous estimates of the original state and disturbance are thus obtained. The proposed observer technique is further applied to estimate sensor faults. Finally, a numerical example is given to illustrate the design procedure, and the simulation results show the desired tracking performance. The pre knowledge of the disturbance and fault is not necessary for our design. Moreover, the considered disturbance and sensor fault can be in any form.