Novel Nonlinear Process Monitoring Based on KPCA-ICA

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Abstract:

A novel nonlinear process monitoring method based on kernel principal component analysis (KPCA) - independent component analysis (ICA) is proposed. The new method is a two-phase algorithm: whitened KPCA plus ICA. KPCA spheres data and makes the data structure become as linearly separable as possible by virtue of an implicit nonlinear mapping determined by kernel. ICA seeks the projection directions in the KPCA whitened space, making the distribution of the projected data as non-gaussian as possible. The application to the Tennessee Eastman (TE) simulated process indicates that the proposed process monitoring method can effectively capture the nonlinear relationship in process variables. Its performance significantly outperforms monitoring method based on ICA.

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Periodical:

Advanced Materials Research (Volumes 588-589)

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1054-1057

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Online since:

November 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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