シャ　キンカ   Jinhua She   佘　錦華    所属   工学部 機械工学科    職種   教授
言語種別	英語
発行・発表の年月	2018/02
形態種別	学術論文
査読	査読あり
標題	A new performance index of LQR for combination of passive base isolation and active structural control
執筆形態	共著
掲載誌名	Engineering Structures
掲載区分	国外
出版社・発行元	Elsevier
巻・号・頁	157,pp.280-299
担当範囲	All
著者・共著者	Kou Miyamoto, Daiki Sato, and Jinhua She
概要	This paper considers the problem of designing a state-feedback controller with both passive base isolation (PBI) and active structural control (ASC). In order to improve control performance, state-feedback gains are designed based on the linear quadratic regulator (LQR) method that optimizes a new performance index containing absolute acceleration, and inter-story drifts and velocity. Simulations on a model of an eleven degree-of-freedom shear building for four earthquake accelerograms are used to verify this method. Comparison studies show that, compared with PBI, the combination of PBI and ASC improves control performance; and this method yields better control results than the conventional ASC, which considers relative displacement and relative velocity of each story. The results are also discussed from the viewpoint of control system structure regarding the location of system zeros. In addition, the effect of weights in the LQR on control performance is discussed. A method for selecting the weights is presented by using the infinity norm of a system as a criterion to visualize their effect.
外部リンクURL	https://www.sciencedirect.com/science/journal/01410296/157