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Title: Estimation of variance reduction opportunities through cascade control
Authors: Lakshminarayanan, S. 
Hermanto, M.W.
Goradia, D.B.
Rangaiah, G.P. 
Keywords: Cascade control
Control loop performance assessment
Minimum variance control
Performance monitoring
Variance decomposition
Issue Date: Dec-2006
Citation: Lakshminarayanan, S.,Hermanto, M.W.,Goradia, D.B.,Rangaiah, G.P. (2006-12). Estimation of variance reduction opportunities through cascade control. Canadian Journal of Chemical Engineering 84 (6) : 704-714. ScholarBank@NUS Repository.
Abstract: We describe an approach that is useful in deciding if significant benefits, in terms of control loop performance index (through variability reduction), will be achieved by a change in control loop configuration from simple feedback (SFB) to cascade control. The problem is considered in a stochastic setting and solved using the variance decomposition technique. The proposed methodology requires only routine operating data from an existing simple feedback control loop and knowledge of the process delays. Several simulation examples and one experimental case study exemplify the utility of this approach.
Source Title: Canadian Journal of Chemical Engineering
ISSN: 00084034
Appears in Collections:Staff Publications

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