Time-domain performance limitations arising from decentralized architectures and their relationship to the RGA

Predominantly, control theory deals with centralized (unrestricted) architectures. However, in practice, decentralized architectures are often preferred. The reasons for this preference are manyfold and include ease of understanding, maintainability, cabling issues and others. The aim of the current...

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Bibliographic Details
Published inInternational journal of control Vol. 78; no. 13; pp. 1045 - 1062
Main Authors Goodwin, Graham C., Salgado, Mario E., Silva, Eduardo I.
Format Journal Article
LanguageEnglish
Published London Taylor & Francis Group 10.09.2005
Taylor & Francis
Subjects
Applied sciences
Computer science; control theory; systems
Control theory. Systems
Exact sciences and technology
System theory
Array
Input output
Time domain method
Decentralized control
Limitation
Insight
Performance
Pairing
Gain
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Summary:Predominantly, control theory deals with centralized (unrestricted) architectures. However, in practice, decentralized architectures are often preferred. The reasons for this preference are manyfold and include ease of understanding, maintainability, cabling issues and others. The aim of the current paper is to gain insight into the fundamental performance limitations that arise from the use of a decentralized architecture. These fundamental limitations can guide the design of decentralized controllers and offer insight into the performance loss incurred by the use of a restricted architecture. An interesting feature of the results is that they depend, inter-alia, on the relative gain array (RGA). This gives new insight into this standard tool for assessing input-output pairings in decentralized control architectures.
ISSN:0020-7179
1366-5820
DOI:10.1080/00207170500226016