000020163 001__ 20163
000020163 005__ 20170118182357.0
000020163 04107 $$aeng
000020163 046__ $$k2017-01-09
000020163 100__ $$aNagashima, Ichiro
000020163 24500 $$aStudy on Feed-Forward Control of Base-Isolated Buildings Using Seismic Input Motions

000020163 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020163 260__ $$b
000020163 506__ $$arestricted
000020163 520__ $$2eng$$aThis paper focuses on the use of feed-forward control techniques in base-isolated buildings to improve the control performance and efficiency of active response control systems for seismic excitations. Two approaches to feed-forward control are studied. One is optimal feedback and feed-forward control (FBFFC), which makes use of predicted earthquake ground motion before its arrival. The other is input cancellation control (ICC), which is directly derived to cancel the absolute displacement of a base-isolated building at every moment and does not require prediction of the input ground motion. FBFFC is derived as an optimal control problem formulated using absolute coordinates and a control algorithm is derived to reduce the absolute acceleration response. It is found that the duration of the predicted seismic input motion required for FBFFC becomes shorter as control intensity increases, while control performance and the required control force approach those of ICC. Based on these findings, a new control algorithm that combines FBFFC and ICC is proposed. It is expected that this study will contribute to the development of a new approach to feed-forward active control of base isolated buildings.

000020163 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020163 653__ $$aActive response control; Feed-forward Control; Base isolation; Optimal control theory

000020163 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020163 720__ $$aNagashima, Ichiro$$iMaseki, Ryota
000020163 8560_ $$ffischerc@itam.cas.cz
000020163 8564_ $$s373741$$uhttp://invenio.itam.cas.cz/record/20163/files/670.pdf$$yOriginal version of the author's contribution as presented on USB, paper 670.
000020163 962__ $$r16048
000020163 980__ $$aPAPER