CAREER: Nonlinear Output Feedback Control of Constrained Multivariable Processes

Henson 9502327这是一项学院早期职业发展(Career)补助金，既包括研究，也包括教育部分。研究：PI的研究重点是针对约束多变量过程的非线性输出反馈控制策略的发展。随着对生产率和产品质量要求的提高，化工过程需要更有效的估计和控制技术。为了提供令人满意的性能，工业控制系统必须考虑多个输入和输出、非线性动态行为、过程约束和缺乏在线测量。这项研究的目的是为表现出这些特征的化学过程开发一种计算高效的控制策略。该控制系统有三个不同的组成部分：(1)提供不可测状态变量在线估计的非线性闭环系统观测器；(2)考虑过程非线性的多变量输入输出线性化控制器；(3)补偿过程约束的多变量线性模型预测控制器。对控制策略进行了理论分析，并利用典型的化学反应器和聚合反应器模型进行了仿真评估。与杜邦的合作安排将允许该控制方案应用于工业聚合过程。这项测试将有助于将技术转让给行业。教育：该教学计划旨在提高路易斯安那州立大学化学工程系的教育机会。该计划的具体目标是：(1)改善系的计算机设施；(2)修改系的过程控制课程的课程；(3)系本科实验室的计算机化实验；(4)振兴系的本科生研究计划；(5)在系内建立少数族裔学生计划；(6)参与系的研究生招生计划。

Henson 9502327 This is a Faculty Early Career Development (CAREER) grant which includes both a research as well as an educational component. Research: The PI's research focuses on the development of nonlinear output feedback control strategies for constrained multivariable processes. More effective estimation and control techniques are needed for chemical processes as a result of increased demands on productivity and product quality. In order to provide satisfactory performance, industrial control systems must account for multiple inputs and outputs, nonlinear dynamic behavior, process constraints, and lack of on-line measurements. The objective of this research is to develop a computationally efficient control strategy for chemical processes that exhibit these characteristics. The control system has three distinct components: (1) a nonlinear closed-loop observer which provides on-line estimates of unmeasured state variables; (2) a multivariable input-output linearizing controller which accounts for process nonlinearities; and (3) a multivariable linear model predictive controller which compensates for process constraints. The control strategy will be analyzed theoretically and evaluated via simulation using representative chemical and polymerization reactor models. A collaborative arrangement with DuPont will allow the control scheme to be applied to an industrial polymerization process. This test will facilitate technology transfer to industry. Education: The teaching plan is designed to enhance the educational opportunities available in the Louisiana State University Chemical Engineering Department. The specific goals of the plan are to: (1) improve the department's computer facilities; (2) revise the curriculum for the department's process control courses; (3) computerize experiments in the department's undergraduate laboratories; (4) revitalize the department's undergraduate research program; (5) establish a minority student program in the department; and (6) participa te in the department's graduate student recruitment program.