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Title: Integrity of systems under decentralized integral control
Authors: Meadows, Edward S.
Kariwala, Vinay
Forbes, J. Fraser
Keywords: DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation::Control engineering
DRNTU::Engineering::Computer science and engineering::Theory of computation::Analysis of algorithms and problem complexity
DRNTU::Engineering::Chemical engineering
Issue Date: 2005
Source: Kariwala, V., Forbes, J. F., & Meadows, E. S.(2005). Integrity of systems under decentralized integral control. Automatica, 41(9), 1575-1581.
Series/Report no.: Automatica
Abstract: A decentralized controller that maintains closed loop stability, when the individual controllers fail or are taken out of service, provides fault tolerance and flexibility in operation. Recently, necessary and sufficient conditions for the existence of a block decentralized controller with integral action for a system to possess integrity against controller failures were proposed. In this paper, these conditions are equivalently expressed using the well-known notions of Niederlinski index (NI) and block relative gain (BRG). The alternate representation implies that under minor assumptions, the available necessary conditions based on NI and BRG are actually both necessary and sufficient. We also show that confirming the existence of a block decentralized controller with integral action such that the system has integrity is NP-hard.
ISSN: 0005-1098
DOI: 10.1016/j.automatica.2005.03.024
Rights: Automatica. Copyright © 2005 Elsevier Ltd All rights reserved. The Journal's web site is located at
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Journal Articles

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