High-purity control of internal thermally coupled distillation column using nonlinear wave model

ZHOU Yexiang; LIU Xinggao; WANG Chengyu

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High-purity control of internal thermally coupled distillation column using nonlinear wave model

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- High-purity control of internal thermally coupled distillation column using nonlinear wave model
- CIESC Journal Issue 7, (2008)
- 作者机构：
  
  浙江大学工业控制技术国家重点实验室，工业控制研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：05 July 2008，
  
  Published：05 July 2008
- 稿件说明：
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ZHOU Yexiang, LIU Xinggao, WANG Chengyu. High-purity control of internal thermally coupled distillation column using nonlinear wave model[J]. CIESC Journal, 2008, (7).
DOI：

ZHOU Yexiang, LIU Xinggao, WANG Chengyu. High-purity control of internal thermally coupled distillation column using nonlinear wave model[J]. CIESC Journal, 2008, (7). DOI：

摘要

首先建立内部热耦合精馏塔（ITCDIC）的非线性波动降阶模型，并将非线性波动理论（wave）应用到ITCDIC控制问题中，实现一般模型控制（GMC）方案.与传统控制方案相比，基于波动理论的一般模型控制（waveGMC）不再采用ITCDIC的近似线性模型，更好地解决了高纯控制过程中的非线性问题，通过对波形的速度和位置控制能够在短时间内使系统达到稳定.苯-甲苯物系的实例研究表明，ITCDIC波动模型在高纯控制过程中能够精确反映ITCDIC的动态特征，waveGMC控制方案较传统控制方案更加稳定可靠.

Abstract

The nonlinear wave model of internal thermally coupled distillation column (ITCDIC) was firstly established. Based on this theory a novel advanced control strategy—generic model control (GMC) was proposed. Compared with traditional ITCDIC control strategies based on the approximate linear model of ITCDIC，waveGMC control strategy can deal with the strong correlations between controlled variables and regulating variables very well. And tight control of waveform speed and position leads to fast stabilization of product composition. Detailed comparisons were performed in the research on benzene and toluene system. The results proved the efficiency of the nonlinear wave model of ITCDIC and showed good performance of waveGMC control strategy.

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