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- W2558146987 abstract "Canonical variate analysis (CVA) has been applied successfully in process monitoring. This paper proposes an efficient recursive CVA approach to monitor time-varying processes. The exponential weighted moving average approach has been adopted to update the covariance matrix of past observation vectors without the need for recalling past training data. The most important challenge faced by the recursive CVA algorithm is the high computation cost. To reduce the computation cost, the first order perturbation theory was introduced to update the singular value decomposition (SVD) of the Hankel matrix recursively. The computation cost of recursive SVD based on the first order perturbation theory is significantly less compared with conventional SVD. The proposed method is illustrated by the simulation of the continuous stirred tank reactor system. Simulation results indicate that not only can the proposed method effectively adapt to the natural changes of time-varying processes but also the proposed method can also identify two types of abrupt sensor faults." @default.
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- W2558146987 date "2016-11-23" @default.
- W2558146987 modified "2023-10-17" @default.
- W2558146987 title "Efficient recursive canonical variate analysis approach for monitoring time-varying processes" @default.
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- W2558146987 doi "https://doi.org/10.1002/cem.2858" @default.
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