000004860 001__ 4860
000004860 005__ 20141119144559.0
000004860 04107 $$aeng
000004860 046__ $$k2002-06-02
000004860 100__ $$aJohnson, Erik A.
000004860 24500 $$aSTRUCTURAL VIBRATION MITIGATION USING DISSIPATIVE SMART DAMPING DEVICES

000004860 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004860 260__ $$bColumbia University in the City of New York
000004860 506__ $$arestricted
000004860 520__ $$2eng$$aAn important problem in semiactive control of structures using smart damping devices for vibration mitigation is the development of an efficient control algorithm which accounts for the dissipative characteristics of the device. For smart dampers, the dissipative nature is represented as a nonlinear inequality constraint, which cannot be directly imposed on available control strategies using standard techniques. In this paper, linear matrix inequality (LMI) based methods are investigated to include the nonlinear dissipativity constraint in the linear quadratic regulator (LQR) problem to be used in the semiactive control of structures. First, the LQR problem is defined as an eigenvalue problem (EVP) in terms of LMIs. Then, the dissipativity constraint is appended to the EVP in its weak expected value form. The final control algorithm and the effects of the dissipativity constraint are investigated analyzing a 2DOF structure using an ideal semiactive damper. It is found that, the proposed method increases the dissipative nature of the forces considerably compared to conventional LQR approach.

000004860 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004860 653__ $$astructural control, smart damping technology, linear matrix inequalities, dissipative control.

000004860 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004860 720__ $$aJohnson, Erik A.$$iErkus, Baris
000004860 8560_ $$ffischerc@itam.cas.cz
000004860 8564_ $$s201488$$uhttps://invenio.itam.cas.cz/record/4860/files/442.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004860 962__ $$r4594
000004860 980__ $$aPAPER