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Valve stiction detection using NLPCA

H., Zabiri and A., Maulud and M., Ramasamy and T.D.T., Thao (2008) Valve stiction detection using NLPCA. In: 27th IASTED International Conference on Modelling, Identification, and Control, 11 February 2008 through 13 February 2008, Innsbruck.

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Abstract

A significant number of control loops in process plants perform poorly due to control valve stiction. Stiction in control valves is the most common and long standing problem in industry, resulting in oscillations in process variables which subsequently lowers product quality and productivity. Developing a method to detect valve stiction in the early phase is imperative to avoid major disruptions to the plant operations. In this paper, nonlinear principal component analysis (NLPCA), which is widely known for its capability in unravelling nonlinear correlations in process data, is extended to investigate control valve stiction problems. Results from simulated case studies show that NLPCA is a promising tool for valve stiction diagnosis.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Identification (control systems); Nonlinear analysis; Process control; Safety valves; Stiction; Control loops; Control valves; In controls; In process; Non-linear correlations; Nonlinear principal component analysis; Plant operations; Product qualities; Standing problems; Principal component analysis
Subjects:T Technology > TP Chemical technology
Departments / MOR / COE:Departments > Chemical Engineering
ID Code:3731
Deposited By: Haslinda Zabiri
Deposited On:28 Dec 2010 07:02
Last Modified:19 Jan 2017 08:26

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