Plantwide Control System Design: Extension to Multiple-Forcing and Multiple-Steady-State Operation

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• 作者：Rong Chen ; Thomas McAvoy ; and Evanghelos Zafiriou
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2004
• 出版时间：July 7, 2004
• 年：2004
• 卷：43
• 期：14
• 页码：3685 - 3694
• 全文大小：119K
• 年卷期：v.43,no.14(July 7, 2004)
• ISSN：1520-5045

文摘

A new approach to designing plantwide control systems that is based on a linear dynamic processmodel and output optimal control is extended in this paper. The design of a plantwide architectureis split into four stages, and the results from one stage are used as the input to the next. Duringthe design process, transient responses are easily calculated, and they can be used to comparecandidate architectures to one another to eliminate architectures with poor dynamic performance.The design methodology is facilitated through a user-friendly software package that makes useof the best currently available algorithms for solving output optimal control problems. In thispaper, the design methodology is extended to cover cases where a set of step disturbances and/or step set-point changes is important, as well as to cases where a common control system isrequired for multiple-steady-state operation. The approach is illustrated on the TennesseeEastman process.