Decentralized input-constraint trackers for unknown large-scale interconnected sampled-data systems with state delay

Yan Yi Du, Jason Sheng Hong Tsai, Yi Hsuan Chen, Shu Mei Guo, Leang San Shieh

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Decentralized modeling and linear observers/input constraint trackers for a more general class of unknown large-scale interconnected sampled-data linear systems with state delay and closed-loop decoupling property are proposed in this paper. First, the off-line observer/Kalman filter identification (OKID) method is used to determine the appropriate (low-) order decentralized linear observers for the unknown large-scale interconnected sampled-data linear system with state delay. Then, a digital redesign approach with the high-gain property is applied to overcome the modeling error of the above observers effectively. Moreover, a digital-redesign observer-based linear quadratic digital tracker with high-gain property for the sampled-data system is presented, and it provides high performance on trajectory tracking with the closed-loop decoupling property. Finally, to reduce the magnitude of control input, which is caused by the high-gain property to fit the requirement of the input constraint, the modified linear quadratic digital tracker (LQDT) is proposed. And the control input can be compressed effectively without losing the original high performance of tracking much.

Original languageEnglish
Title of host publicationProceedings of the 30th IASTED Conference on Modelling, Identification, and Control, AsiaMIC 2010
Pages311-317
Number of pages7
DOIs
Publication statusPublished - 2010 Dec 1
Event30th IASTED Conference on Modelling, Identification, and Control, AsiaMIC 2010 - Phuket, Thailand
Duration: 2010 Nov 242010 Nov 26

Publication series

NameProceedings of the IASTED International Conference on Modelling, Identification and Control
ISSN (Print)1025-8973

Other

Other30th IASTED Conference on Modelling, Identification, and Control, AsiaMIC 2010
CountryThailand
CityPhuket
Period10-11-2410-11-26

All Science Journal Classification (ASJC) codes

  • Software
  • Modelling and Simulation
  • Computer Science Applications

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