Title :
Fault tolerant control based on multiple linear models in a chemical reactor
Author :
Fuente, M.J. ; Duran, T.A.
Author_Institution :
Dipt. Ing. de Sist. y Autom., Univ. de Valladolid, Valladolid, Spain
Abstract :
A new Fault Tolerant Control System (FTCS) is proposed in this paper. The FTCS consists of three elements: the basic controller, which in this paper is a multivariable model-based predictive control (specially the EPSAC: Extended Prediction Self-Adaptative Control with constraints), a FDI scheme that is based in a linear model of the system and thresholds verification and finally a reconfiguration module. This last module has a bank of linear models of the system, working around different operation points, each one calculated to obtain the maximum production at the output. When a fault is detected, with the information based in the FDI scheme and the sensors, the reconfiguration module switches for the best model in that situation. This model is introduced to the predictive control and to the FDI scheme to maintain the availability of the system. This new FTCS has been illustrated with a very non-linear system: a reaction tank by the Van der Vusse reation.
Keywords :
adaptive control; chemical reactors; control system synthesis; fault tolerant control; linear systems; multivariable control systems; nonlinear control systems; predictive control; self-adjusting systems; EPSAC; FDI scheme; FTCS; Van der Vusse reaction; chemical reactor; extended prediction self-adaptative control with constraint; fault tolerant control system; multiple linear model; multivariable model; nonlinear system; predictive control; reaction tank; reconfiguration module; thresholds verification; Decision support systems; Electronic mail; Europe; Facsimile; Fault Detection and Isolation; Fault tolerant control; Predictive control; Reconfiguration; Van der Vusse reaction tank;
Conference_Titel :
Control Conference (ECC), 2001 European
Conference_Location :
Porto
Print_ISBN :
978-3-9524173-6-2
