CAREER: Studies in the Transition Control of Multi-Product Chemical Reactors

摘要- Kosanovich - 9703252 本研究的目的是发展一个严格的理论框架，可以用来设计一个有效的反馈控制策略的多产品化学反应器。 全球市场经济要求使用相同的设备有效地制造多种等级的单一产品，同时最大限度地减少不合格材料的生产并保持安全和环境约束。 这个项目是一个基本的方法，这个问题，开始与建模和分析的多种性质的操作，导致一个框架，允许设计的混合监控策略。 具体而言：（1）将开发局部近似模型以表示在每个操作点处的多个过程操作和约束，以及（2）将设计动态监督控制器以从一组可能的控制器中选择并切换到操作中的最佳控制器，该最佳控制器将提供上级设定点跟踪。 这项研究将提供新的和基本的见解过渡控制问题，从而在一个新的理论框架，结合多分辨率建模和鲁棒控制器的设计与分析的稳定性和性能的闭环系统。 预期的结果将加强化学工程师在研究生和本科层次的教育。 这方面的例子包括：以算法的形式开发数值程序，以引入多分辨率模型识别;将过渡控制纳入现有的过程控制课程;开发实验室实验，以提供所提出概念的积极实验和具体经验;通过合作实习计划与工业界合作，使学生接触多产品过程;以及与工业专业学生一起举办研讨会和论文项目，以促进技术转让。

Abstract - Kosanovich - 9703252 The objective this research is the development of a rigorous theoretical framework that can be used to design an effective feedback control strategy for multi-product chemical reactors. The motivation is provided by a global market economy which demands that the manufacture of multiple grades of a single product be made efficiently using the same equipment while simultaneously minimizing the production of off-spec material and maintaining safety and environmental constraints. This project is a fundamental approach to this problem that starts with modeling and analysis of the multiple nature of the operations leading to a framework that permits the design of a hybrid supervisory control strategy. Specifically: (1) local approximation models will be developed to represent the multiple process operations and constraints at each operating point, and (2) a dynamic supervisory controller will be designed to select and to switch into operation, the best controller from a set of possible controllers, that will provide superior setpoint tracking. This research will provide new and fundamental insights into the transition control problem, resulting in a new theoretical framework that combines multi-resolution modeling and robust controller design with analysis of stability and performance of the closed-loop system. The expected results will enhance the education of chemical engineers at the graduate and undergraduate levels. Examples of this include: the development of numerical programs in the form of algorithms to introduce multi-resolution model identification; the inclusion of transition control to the existing process control course; the development of a laboratory experiment to provide active experimentation and concrete experience of the proposed concepts; the collaboration with industry through co-operative externship programs to expose students to multi-product processes; and the use of workshops and thesis projects with industrial students to facilitate technology transfer.