SHERP

Controller optimization with constraints on probabilistic peak responses

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Authors
Park, Hong-Gun; Park, Ji-Hun; Min, Kyung-Won
Issue Date
2004-03
Publisher
Techno Press
Citation
Structural Engineering and Mechanics, 17(3-4), 593-609
Keywords
stochasticprocesscrossing ratefailure probabilityoptimizationlinear quadratic regulator
Abstract
Peak response is a more suitable index than mean response in the light of structural safety. In
this study, a controller optimization method is proposed to restrict peak responses of building structures
subject to earthquake excitations, which are modeled as partially stationary stochastic process. The
constraints are given with specified failure probabilities of peak responses. LQR is chosen to assure
stability in numerical process of optimization. Optimization problem is formulated with weightings on
controlled outputs as design variables and gradients of objective and constraint functions are derived. Full
state feedback controllers designed by the proposed method satisfy various design objectives and output
feedback controllers using LQG also yield similar results without significant performance deterioration.
ISSN
1225-4568
Language
English
URI
http://technopress.kaist.ac.kr/

http://hdl.handle.net/10371/7386
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College of Engineering/Engineering Practice School (공과대학/대학원)Dept. of Architecture and Architectural Engineering (건축학과)Journal Papers (저널논문_건축학과)
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