Design of Smith Predictor and Fuzzy Decoupling for Mimo Chemical Processes with Time Delays

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• 作者：M. Hamdy and A. Ramadan
• 刊名：Asian Journal of Control
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：19
• 期：1
• 页码：57-66
• 全文大小：1789K
• ISSN：1934-6093

文摘

This paper presents a design of Smith predictor (SP) for a multiple-input multiple-output (MIMO) chemical process with multiple time delays based on a fuzzy decoupling scheme. The decoupling control is achieved using fuzzy logic, to reduce the reliance on model-based analysis in comparison with conventional decoupling. The proposed scheme is easy to realize and simple to design, as well as having a good decoupling capability. The SP is added to the system to overcome the problem of time delay. Stability conditions of the overall closed loop system based on a PI controller in the presence of a fuzzy decoupling scheme are formulated. The Wood and Berry model of a binary distillation column and an industrial-scale polymerization reactor model are used as two examples to illustrate the applicability of the proposed scheme.