A Technique for Integrated Quality Control, Profile Control, and Constraint Handling for Batch Processes

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• 作者：In S. Chin ; Kwang S. Lee ; and Jay H. Lee
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2000
• 出版时间：March 2000
• 年：2000
• 卷：39
• 期：3
• 页码：693 - 705
• 全文大小：169K
• 年卷期：v.39,no.3(March 2000)
• ISSN：1520-5045

文摘

We propose a novel control technique for batch and semibatch processes. The main novelty ofthe technique lies in that it can accommodate several different aspects of industrial batch processcontrol, such as the following of prespecified reference trajectories, the satisfaction of processconstraints, and the meeting of product quality targets, altogether in a single framework. Thissimplifies the design and enables the user to make a systematic trade-off among the differentobjectives. Another novelty is the feature of iterative learning that allows the controller to usethe information collected in the previous batches. This is done by establishing a batch-to-batchcorrelation model giving the integral control action with respect to the batch index. This featureallows the performance to be improved gradually as the batch run is repeated and makes itpossible to attain precise control despite significant model errors and disturbances. Theperformance of the proposed technique is illustrated using a simple nonlinear semibatch reactormodel.