Abstract: Two aseismic hybrid control systems are proposed for protecting building structures against strong earthquakes. The hybrid control system consists of a base‐isolation system connected to either a passive or active mass ...

Abstract: Instantaneous optimal control for nonlinear and inelastic systems is formulated incorporating the specific hysteretic model of the sytem. The resulting optimal control vector is obtained as a function of the total deformation, ...

Abstract: It has been shown recently that a combined use of active and passive control systems, referred to as the hybrid control system, is more effective, beneficial, and practical, in some cases, for reducing the building response ...