H∞ control system design method for parameter sensitivity reduction

Keiji Ohkubo, Kazuhiko Aoki, Hiromitsu Ohmori, Akira Sano

Research output: Contribution to journalArticle

Abstract

There are two types of uncertainty in a system to be controlled; parameter errors and unstructured uncertainty. Conventional H∞ control synthesis in the presence of unstructured uncertainty has been developed on the basis of frequency-domain criteria using the state-space method. It is difficult to consider the sensitivity to parameter errors in the frequency domain, however. In this paper, the authors propose an H∞ controller design method which can cope with parameter errors by introducing a trajectory sensitivity model into the conventional H∞ controller design method. It is also shown that the obtained controller is equivalent to a dynamic state feedback controller whose order becomes high. Thus, controller reduction is adopted.

Original languageEnglish
Pages (from-to)75-84
Number of pages10
JournalElectronics and Communications in Japan, Part III: Fundamental Electronic Science (English translation of Denshi Tsushin Gakkai Ronbunshi)
Volume76
Issue number2
Publication statusPublished - 1993 Feb

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Systems analysis
Control systems
Controllers
State space methods
State feedback
Trajectories
Uncertainty

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

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