Recycle Effect Index: A Measure to Aid in Control System Design for Recycle Processes

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• 作者：S. Lakshminarayanan ; K. Onodera ; and G. M. Madhukar
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2004
• 出版时间：March 17, 2004
• 年：2004
• 卷：43
• 期：6
• 页码：1499 - 1511
• 全文大小：234K
• 年卷期：v.43,no.6(March 17, 2004)
• ISSN：1520-5045

文摘

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 becauseseparation 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 whethera feedback-only control structure is sufficient or an advanced control structure that employs arecycle compensator is necessary. Using control loop performance assessment concepts, this paperproposes a quantitative measure-the recycle effect index (REI)-to help determine whether asimple feedback control system can provide the desired quality of control.