Linear control of oscillator and amplifier flows

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Title: Linear control of oscillator and amplifier flows
Author(s): Schmid, PJ
Sipp, D
Item Type: Journal Article
Abstract: Linear control applied to fluid systems near an equilibrium point has important applications for many flows of industrial or fundamental interest. In this article we give an exposition of tools and approaches for the design of control strategies for globally stable or unstable flows. For unstable oscillator flows a feedback configuration and a model-based approach is proposed, while for stable noise-amplifier flows a feedforward setup and an approach based on system identification is advocated. Model reduction and robustness issues are addressed for the oscillator case; statistical learning techniques are emphasized for the amplifier case. Effective suppression of global and convective instabilities could be demonstrated for either case, even though the system-identification approach results in a superior robustness to off-design conditions.
Publication Date: 30-Aug-2016
Date of Acceptance: 30-Aug-2016
URI: http://hdl.handle.net/10044/1/39616
DOI: https://dx.doi.org/10.1103/PhysRevFluids.1.040501
ISSN: 2469-990X
Publisher: American Physical Society
Journal / Book Title: Physical Review Fluids
Volume: 1
Copyright Statement: © 2016 The American Physical Society
Publication Status: Published
Article Number: 040501
Appears in Collections:Mathematics
Applied Mathematics and Mathematical Physics
Faculty of Natural Sciences



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