U.S. - Argentina Cooperative Research: Studies on the Robust Control of Chemical Processes

该奖项支持由加州大学戴维斯分校的Ahmet Palazoglu和阿根廷巴伊亚布兰卡CONICET化学工程试点厂的Jose Ramagnoli在化学过程控制方面进行的合作研究。这一合作努力的主要目标是为健壮的过程控制系统开发设计和分析方法。随着人们对产品质量要求的提高、工艺经济性的限制以及严格的环境法规，自动化控制已不可否认地成为化工过程操作中不可或缺的一部分。然而，在不同的操作制度下可靠，并要求控制器在不损失性能或稳定性特性的情况下对这些变化做出反应。通过这种协作开发的方法将在各种应用程序上进行测试。美国调查人员已经调查了一个高纯度精馏塔模型，以通过各种方法来演示不确定度表征。建立了双效高纯塔的动态模型，并对其在多回路PI控制下的性能进行了测试。阿根廷的研究小组研究了表征化学过程模型不确定性的奇异值和结构化奇异值概念。这两个小组在线性和非线性过程的鲁棒控制领域具有互补的专业知识。经多篇出版物论证，这两个线性过程。通过一些出版物的证明，这两个小组调查了模型/工厂不匹配的各种表示法的使用，并得出了设计和分析方法。加州大学戴维斯分校的研究小组强调使用磁/相信息，并将其扩展到高度结构化的病例。在应用方面，加州大学戴维斯分校开发了严格的高纯度蒸馏系统动态模型，而阿根廷则使用三效蒸发器和固定床反应器，包括中试工厂研究。制定强有力的控制战略最终使两国的加工工业受益，因为它帮助它们在严格控制的情况下更有信心地运行工艺装置。

This award supports cooperative research in chemical process control to be conducted by Ahmet Palazoglu of the University of California at Davis and Jose Ramagnoli of the Chemical Engineering Pilot Plant of CONICET in Bahia Blanca, Argentina. The primary object of this collaborative effort is to develop design and analysis methods for robust process control systems. With increasing demands on product quality, contraints on process economics and stringent environmental regulations, automatic control has undeniably become and integral pat of chemical process operations. However, reliable under various operating regimes and demand that the controllers respond to such variations without loss of performance or stability characteristics. The methods developed through this collaboration will be tested on various applications. The U. S. investigators have already investigated a high purity distillation column model to demonstrate the uncertainty characterization by various methods. The dynamic model of double effect high purity column has also been developed and its behavior has been tested under multi-loop PI control. The research team in Argentina has studied the singular value and the structured singular value concepts in characterizing model uncertainty for chemical processes. These two groups have complementary expertise in the area of robust control of linear and nonlinear process. Demonstrated by a number of publications, the two linear process. Demonstrated by a number of publications, the two groups have investigated the use of various representations of the model/plant mismatch and arrived at design and analysis methods. The UC Davis group emphasizes the use of mag- nitude/phase information as well as its extensions to highly structured cases. In terms of applications, the UC Davis group developed rigorous dynamic models of high purity distillation systems while the Argentines work with triple effect evaporators and fixed-bed reactors, including pilot plant studies. Development of robust control strategies ultimately benefits processing industries in both countries by assisting them to operate process units with more confidence under tight control situations.