NDLI: Robust state-feedback controllers for systems under mixed time/frequency domain constraints

Content Provider	IEEE Xplore Digital Library
Author	Schomig, E. Sznaier, M. Zi-Qin Wang
Copyright Year	1993
Description	Author affiliation: Dept. of Electr. Eng., Washington Univ., Seattle, WA, USA (Schomig, E.)
Abstract	A successful controller design paradigm must take into account both model uncertainty and design specifications. Model uncertainty can be addressed using H/sub /spl infin// or l/sub 1/ robust control theory, depending upon its characterisation. However, these frameworks cannot accommodate the realistic case where the design specifications include both time and frequency-domain constraints. In this paper we propose an approach that takes explicitly into account both mixed time/frequency-domain constraints and model uncertainty. This is achieved by minimising an upper bound of a set-induced operator norm, subject to additional frequency-domain specifications such as bounds on the H/sub 2/ and H/sub /spl infin//-norm of relevant transfer functions. The main result of the paper shows that, by using the parametrization proposed by Kaminer (1993), the problem can be cast into a finite-dimensional, differentiable convex optimisation problem, that can be solved by using gradient-based methods. This theory is illustrated with an application to the lateral dynamics of a B767 aircraft.<>
Starting Page	2584
Ending Page	2589
File Size	494217
Page Count	6
File Format	PDF
ISBN	0780312988
DOI	10.1109/CDC.1993.325662
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1993-12-15
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Robust control Control systems Frequency domain analysis Uncertainty Time factors Time domain analysis Upper bound Transfer functions Optimization methods Robust stability
Content Type	Text
Resource Type	Article

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