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- W2351279085 abstract "A probabilistic kernel principal component analysis mixture model(PKPCAM) based on Bayesian inference was proposed to detect and diagnose the fault in the nonlinear and multimode processes.In PKPCAM,each operating mode was characterized by a local probabilistic kernel principal component,leading to a series of components corresponding to multiple operation conditions.Firstly,process data were projected from the original measurement space into the high-dimensional feature space.Then the probabilistic kernel principal component analysis mixture model was estimated in the feature space and used to characterize the multiple local components from the viewpoint of probability.Finally,utilizing the posterior probability of the monitored sample in kernel subspace,according to Mahalanobis distance within the local mode,the Bayesian reference based global probability index was proposed for fault detection.And meantime,using the relative contribution of variable within mode,global contribution index was derived to perform diagnosis.Comparing to the two methods based on the sub-principal component analysis using k-means clustering and the kernel principal component analysis,the feasibility and effectiveness by the proposed Bayesian inference based PKPCAM method for fault detection and diagnosis in nonlinear and multimode process was validated on Tennessee Eastman process." @default.
- W2351279085 created "2016-06-24" @default.
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- W2351279085 date "2014-01-01" @default.
- W2351279085 modified "2023-09-23" @default.
- W2351279085 title "Fault detection and diagnosis for nonlinear and multimode processes using Bayesian inference based PKPCAM approach" @default.
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