Back to Search
Start Over
Fault-tolerant control of a polyethylene reactor
- Source :
-
Journal of Process Control . Jun2007, Vol. 17 Issue 5, p439-451. 13p. - Publication Year :
- 2007
-
Abstract
- Abstract: This work focuses on fault-tolerant control of a gas phase polyethylene reactor. Initially, a family of candidate control configurations, characterized by different manipulated inputs, is identified. For each control configuration, a bounded nonlinear feedback controller, that enforces asymptotic closed-loop stability in the presence of constraints, is designed, and the constrained stability region associated with it is explicitly characterized using Lyapunov-based tools. Next, a fault-detection filter is designed to detect the occurrence of a fault in the control actuator by observing the deviation of the process states from the expected closed-loop behavior. A switching policy is then derived, on the basis of the stability regions, to orchestrate the activation/deactivation of the constituent control configurations in a way that guarantees closed-loop stability in the event of control system faults. Closed-loop system simulations demonstrate the effectiveness of the fault-tolerant control strategy. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 09591524
- Volume :
- 17
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Process Control
- Publication Type :
- Academic Journal
- Accession number :
- 24384996
- Full Text :
- https://doi.org/10.1016/j.jprocont.2006.04.002