PROCESS/MODEL MISMATCH COMPENSATION FOR MODEL-BASED CONTROLLERS
Titel:
PROCESS/MODEL MISMATCH COMPENSATION FOR MODEL-BASED CONTROLLERS
Auteur:
Lee, Peter L. Sullivan, Gerald R. Zhou, Weibiao
Verschenen in:
Chemical engineering communications
Paginering:
Jaargang 80 (1989) nr. 1 pagina's 33-51
Jaar:
1989-06-01
Inhoud:
Process model-based control algorithms that employ a process model directly in the controller, have been shown to produce good control performance and robust behaviour, despite process modelling errors. However, when the process/model mismatch is large, the closed-loop response, while still being better than responses obtained by conventional controllers, will be degraded. This paper presents a new approach to compensate for process/model mismatch errors, and is based upon the Generic Model Control (GMC) algorithm. This approach is applicable to both linear and nonlinear model-based algorithms. Simulation results are presented to illustrate the efficiency of the approach