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Discrete-time control of continuous systems with approximate decentralized fixed modes

Title:

Discrete-time control of continuous systems with approximate decentralized fixed modes

Aghdam, Amir G. and Davison, Edward J. (2008) Discrete-time control of continuous systems with approximate decentralized fixed modes. Automatica, 44 (1). pp. 75-87. ISSN 00051098

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Official URL: http://dx.doi.org/10.1016/j.automatica.2007.05.004

Abstract

In this paper, the discrete-time control of decentralized continuous-time systems, which have approximate decentralized fixed modes, is studied. It is shown that under certain conditions, discrete-time controllers can improve the overall performance of the decentralized control system, when a linear time-invariant continuous-time controller is ineffective. In order to obtain these conditions, a quantitative measure for different types of approximate fixed modes in a decentralized system is given. In this case, it is shown that discrete-time zero-order hold (ZOH) controllers, and in particular, that generalized sampled-data hold functions (GSHF), can significantly improve the overall performance of the resultant closed-loop system. The proposed sampled-data controller is, in fact, a linear time-varying controller for the continuous-time system.

Divisions:Concordia University > Gina Cody School of Engineering and Computer Science > Electrical and Computer Engineering
Item Type:Article
Refereed:Yes
Authors:Aghdam, Amir G. and Davison, Edward J.
Journal or Publication:Automatica
Date:2008
Digital Object Identifier (DOI):10.1016/j.automatica.2007.05.004
Keywords:Decentralized control; Sampled-data control; Decentralized fixed modes; Approximate fixed modes
ID Code:975167
Deposited By: DANIELLE DENNIE
Deposited On:22 Jan 2013 14:00
Last Modified:18 Jan 2018 17:39

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