NDLI: Fault detection and isolation of a polyethylene reactor using asynchronous measurements

Content Provider	IEEE Xplore Digital Library
Author	McFall, C.W. de la Pena, D.M. Ohran, B. Christofides, P.D. Davis, J.F.
Copyright Year	2009
Description	Author affiliation: Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, 90095-1592, USA (McFall, C.W.; Ohran, B.; Christofides, P.D.; Davis, J.F.) \|\| Departmento de Ingeniería de Sistemas y Automática, Universidad de Sevilla, Camino de los Descubrimientos S/N, 41092, Spain (de la Pena, D.M.)
Abstract	This work applies the method of fault-detection, and isolation for nonlinear processes when some process variable measurements are available at regular sampling intervals and the remaining process variables are measured at an asynchronous rate to a gas-phase polyethylene reactor model. First, the fault-detection and isolation (FDI) scheme that employs model-based techniques for the isolation of faults is reviewed. The FDI scheme provides detection and isolation of any fault that enters into the differential equation of only synchronously measured states, and grouping of faults that enter into the differential equation of any asynchronously measured state. For a fully coupled process system, fault-detection occurs shortly after a fault takes place, and fault isolation, limited by the arrival of asynchronous measurements, occurs when asynchronous measurements become available. Fault-tolerant control methods with a supervisory control component are then employed to achieve stability in the presence of actuator failures using control system reconfiguration. Numerical simulations of the polyethylene reactor are performed, demonstrating the applicability and performance of the proposed fault-detection and isolation and fault-tolerant control method in the presence of asynchronous measurements.
Starting Page	4302
Ending Page	4309
File Size	814802
Page Count	8
File Format	PDF
ISBN	9781424445233
ISSN	07431619
DOI	10.1109/ACC.2009.5160101
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	American Automatic Control Council(AACC)
Subject Keyword	Fault detection Polyethylene Inductors Differential equations Control systems Sampling methods Fault tolerant systems Supervisory control Stability Actuators
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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