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primary topic: Analysis of control valves stiction quantification tool

Analysis of control valves stiction quantification tool
type: AcademicArticle
type: Article
abstract: Control valve stiction is considered as one of the main sources of control loops nonlinearities which impacts plants profitability. In turn, this phenomenon hinders the plant from being operated at optimal conditions. Therefore, an efficient and accurate stiction quantification algorithm is required for accurate stiction compensation and timely scheduling of control valve maintenance. This research investigates the robustness and recommends improvements to the previously developed stiction quantification approach by Zabiri et al. The approach was tested under several operating conditions which were simulated in five case studies by using MATLAB software. The case studies investigated the impact of a wide range of stiction values, controller tuning, disturbance, time delay and noise on the quantification approach. The algorithm was found to be robust since it quantified the correct values of stiction regardless of the operating conditions. It was found that the accuracy of the quantification results depends on the process model accuracy, number of data samples and the search resolution. A number of improvements were recommended and validated by simulation in order to further enhance the current quantification approach. As conclusion, the algorithm can be applied on any type of process due to its robustness. © 2016, Gadjah Mada University. All rights reserved.
date: 2016
volume: 16
issue: 2
is part of: ASEAN Journal of Chemical Engineering
status: peerReviewed
status: published
author list: authors
type: EPrint
type: ArticleEPrint
is part of: repository

Gadjah Mada University
type: Organization

ASEAN Journal of Chemical Engineering
type: Collection
issn: 16554418

H. Zabiri
type: Person
given name: H.
family name: Zabiri

M.G.M.K. Elarafi
type: Person
given name: M.G.M.K.
family name: Elarafi

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primary topic: Analysis of control valves stiction quantification tool