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Title: Recycle Effect Index: A Measure to Aid in Control System Design for Recycle Processes
Authors: Lakshminarayanan, S. 
Onodera, K.
Madhukar, G.M.
Issue Date: 17-Mar-2004
Citation: Lakshminarayanan, S.,Onodera, K.,Madhukar, G.M. (2004-03-17). Recycle Effect Index: A Measure to Aid in Control System Design for Recycle Processes. Industrial and Engineering Chemistry Research 43 (6) : 1499-1511. ScholarBank@NUS Repository.
Abstract: Systems with material and/or energy recycles are quite common in the chemical industry. Modeling and DCS-level controller design are quite challenging for such processes because separation of the overall process response into a direct (forward-path) response and an indirect (recycle-path) response is often difficult. Even when this is possible, one needs to know whether a feedback-only control structure is sufficient or an advanced control structure that employs a recycle compensator is necessary. Using control loop performance assessment concepts, this paper proposes a quantitative measure-the recycle effect index (REI)-to help determine whether a simple feedback control system can provide the desired quality of control.
Source Title: Industrial and Engineering Chemistry Research
ISSN: 08885885
Appears in Collections:Staff Publications

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