000013250 001__ 13250
000013250 005__ 20161114160333.0
000013250 04107 $$aeng
000013250 046__ $$k2009-06-22
000013250 100__ $$aBahar, A.
000013250 24500 $$aNew inverse model of magnetorheological dampers for semi-active application on a 3d base-isolated structure

000013250 24630 $$n2.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000013250 260__ $$bNational Technical University of Athens, 2009
000013250 506__ $$arestricted
000013250 520__ $$2eng$$aMagnetorheological (MR) dampers have received special attention as semi-active devices for mitigation of structural vibrations. Because of the inherent nonlinearity of these devices, it is difficult to obtain a reasonable mathematical inverse model. This paper is concerned with two related concepts. On one hand, it presents a new inverse model of MR dampers based on the normalized Bouc-Wen model. On the other hand, it considers a hybrid seismic control system for building structures, which combines a class of passive nonlinear base isolator with a semi-active control system. In this application, the MR damper is used as a semi-active device in which the voltage is updated by a feedback control loop.The management of MR dampers is performed in a hierarchical way according to the desired control force, the actual force of the dampers and its capacity to react. The control is applied to a numerical three-dimensional benchmark problem which is used by the structural control community as a state-of-the-art model for numerical experiments of seismic control attenuation. The performance indices show that the proposed semi-active controller behaves satisfactorily.

000013250 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000013250 653__ $$aMR dampers, parameter identification, semi-active control, benchmark building. Abstract. Magnetorheological (MR) dampers have received special attention as semi-active devices for mitigation of structural vibrations. Because of the inherent nonlinearity of these devices, it is difficult to obtain a reasonable mathematical inverse model. This paper is concerned with two related concepts. On one hand, it presents a new inverse model of MR dampers based on the normalized Bouc-Wen model. On the other hand, it considers a hybrid seismic control system for building structures, which combines a class of passive nonlinear base isolator with a semi-active control system. In this application, the MR damper is used as a semi-active device in which the voltage is updated by a feedback control loop.The management of MR dampers is performed in a hierarchical way according to the desired control force, the actual force of the dampers and its capacity to react. The control is applied to a numerical three-dimensional benchmark problem which is used by the structural control community as a state-of-the-art model for numerical experiments of seismic control attenuation. The performance indices show that the proposed semi-active controller behaves satisfactorily.

000013250 7112_ $$aCOMPDYN 2009 - 2nd International Thematic Conference$$cIsland of Rhodes (GR)$$d2009-06-22 / 2009-06-24$$gCOMPDYN2009
000013250 720__ $$aBahar, A.$$iPozo, F.$$iAcho, L.$$iRodellar, J.$$iBarbat, A.
000013250 8560_ $$ffischerc@itam.cas.cz
000013250 8564_ $$s1251179$$uhttps://invenio.itam.cas.cz/record/13250/files/CD371.pdf$$yOriginal version of the author's contribution as presented on CD, section: Active - passive control.
000013250 962__ $$r13074
000013250 980__ $$aPAPER