| Revue: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000308847 |
| ISSN: | 0104-6632 |
| Autores: | Rodrigues, M.A1 Odloak, D |
| Instituciones: | 1Universidade de Sao Paulo, Departamento de Engenharia Quimica, Sao Paulo. Brasil |
| Año: | 2002 |
| Periodo: | Mar |
| Volumen: | 19 |
| Número: | 1 |
| Paginación: | 11-24 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Aplicado, descriptivo |
| Resumen en inglés | In this paper, a new model predictive controller (MPC), which is robust for a class of model uncertainties, is developed. Systems with stable dynamics and time-invariant model uncertainty are treated. The development herein proposed is focused on real industrial systems where the controller is part of an on-line optimization scheme and works in the output-tracking mode. In addition, the system has a time-varying number of degrees of freedom since some of the manipulated inputs may become constrained. Moreover, the number of controlled outputs may also vary during system operation. Consequently, the actual system may show operating conditions with a number of controlled outputs larger than the number of available manipulated inputs. The proposed controller uses a state-space model, which is aimed at the representation of the output-predicted trajectory. Based on this model, a cost function is proposed whereby the output error is integrated along an infinite prediction horizon. It is considered the case of multiple operating points, where the controller stabilizes a set of models corresponding to different operating conditions for the system. It is shown that closed-loop stability is guaranteed by the feasibility of a linear matrix optimization problem |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería de control, Ingeniería química, Modelo de control predictivo, Estabilidad robusta, Control vinculado |
| Keyword: | Engineering, Chemical engineering, Control engineering, Model predictive control, Robust stability, Constrained Control |
| Texte intégral: | Texto completo (Ver HTML) |
