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- W2149998836 abstract "This study proposes a scheme for fault detection and identification (FDI) of a class of non-linear hybrid systems. For fault detection, the proposed method uses a self-switched unscented Kalman filter (UKF) where a component filter with the appropriate dynamic model is chosen to suit the current mode of the hybrid plant. The mode of the hybrid plant, usually defined by system states, is deduced based on the state estimates. The statistical tests of measured datasets are used to detect and identify the fault parameters. For fault identification, a bank of such switched UKF filters is used. A three-tank system has been used to demonstrate the effectiveness of the scheme. Different types of faults, that is, leakage, clogging and abrupt changes in inflow (actuator fault) have been considered. t-Statistical test has been performed on the residuals for FDI and threshold calculation purposes. It is shown that all the types of faults can be successfully detected and identified by the proposed method. The performance of the proposed system is compared with the same for an extended Kalman filter-based FDI system. It has been shown that the UKF-based scheme has lower latency and higher range coverage." @default.
- W2149998836 created "2016-06-24" @default.
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- W2149998836 date "2015-04-01" @default.
- W2149998836 modified "2023-09-23" @default.
- W2149998836 title "Fault detection and identification of non‐linear hybrid system using self‐switched sigma point filter bank" @default.
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- W2149998836 doi "https://doi.org/10.1049/iet-cta.2014.0716" @default.
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