Detalhes do Documento

On-line implementation of nonlinear MPC: an experimental case study

Autor(es): Santos, Lino O. cv logo 1 ; Afonso, Paulo A. F. N. A. cv logo 2 ; Castro, José A. A. M. cv logo 3 ; Oliveira, Nuno M. C. cv logo 4 ; Biegler, Lorenz T. cv logo 5

Data: 2001

Identificador Persistente: http://hdl.handle.net/10316/3826

Origem: Estudo Geral - Universidade de Coimbra

Assunto(s): Process control; Predictive control; Model-based control; Nonlinear models


Descrição
A nonlinear model predictive control algorithm is implemented on-line to control the liquid level and temperature in a pilot plant CSTR, where an irreversible exothermic chemical reaction is simulated experimentally by steam injection. The dynamic behavior of the pilot plant reactor is represented using a mechanistic, first principle model and a comparison between off-line simulation and experimental data is presented. Several sources of model mismatch and unmeasured disturbances are identified that affect the quality of the model in representing the reactor dynamics. Despite these mismatches and disturbances, the closed loop system is able to track setpoint changes and reject disturbances quite well. In particular, the NMPC controller is demonstrated for different tuning parameters and under conditions of constraint saturation at unstable points. http://www.sciencedirect.com/science/article/B6V2H-43K2P7T-5/1/342536dc21267c866ea2f015c70c30ec
Tipo de Documento Artigo
Idioma Inglês
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