Neural Computing and Applications

, Volume 21, Issue 6, pp 1141–1148

Application of nonlinear PCA for fault detection in polymer extrusion processes

LSMS2010 and ICSEE 2010

DOI: 10.1007/s00521-011-0581-y

Cite this article as:
Liu, X., Li, K., McAfee, M. et al. Neural Comput & Applic (2012) 21: 1141. doi:10.1007/s00521-011-0581-y


This paper describes the application of an improved nonlinear principal component analysis (PCA) to the detection of faults in polymer extrusion processes. Since the processes are complex in nature and nonlinear relationships exist between the recorded variables, an improved nonlinear PCA, which incorporates the radial basis function (RBF) networks and principal curves, is proposed. This algorithm comprises two stages. The first stage involves the use of the serial principal curve to obtain the nonlinear scores and approximated data. The second stage is to construct two RBF networks using a fast recursive algorithm to solve the topology problem in traditional nonlinear PCA. The benefits of this improvement are demonstrated in the practical application to a polymer extrusion process.


Nonlinear principal component analysis Polymer extrusion process RBF networks Fast recursive algorithm 

Copyright information

© Springer-Verlag London Limited 2011

Authors and Affiliations

  1. 1.School of Electronics, Electrical Engineering and Computer ScienceQueen’s University BelfastBelfastU.K
  2. 2.Department of Mechanical and Electronic EngineeringInstitute of Technology SligoSligoIreland

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