Economic Model Predictive Control of Nonlinear Process Systems Using Empirical Models
Author | : Anas Wael Alanqar |
Publisher | : |
Total Pages | : 49 |
Release | : 2015 |
ISBN-10 | : OCLC:915970612 |
ISBN-13 | : |
Rating | : 4/5 (12 Downloads) |
Download or read book Economic Model Predictive Control of Nonlinear Process Systems Using Empirical Models written by Anas Wael Alanqar and published by . This book was released on 2015 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt: Economic model predictive control (EMPC) is a feedback control technique that attempts to tightly integrate economic optimization and feedback control since it is a predictive control scheme that is formulated with an objective function representing the process economics. As its name implies, EMPC requires the availability of a dynamic model to compute its control actions and such a model may be obtained either through application of first-principles or though system identification techniques. However, in industrial practice, it may be difficult in general to obtain an accurate first-principles model of the process. Motivated by this, in the present work, Lyapunov-based economic model predictive control (LEMPC) is designed with an empirical model that allows for closed-loop stability guarantees in the context of nonlinear chemical processes. Specifically, when the linear model provides a sufficient degree of accuracy in the region where time-varying economically optimal operation is considered, conditions for closed-loop stability under the LEMPC scheme based on the empirical model are derived. The LEMPC scheme is applied to a chemical process example to demonstrate its closed-loop stability and performance properties as well as significant computational advantages.