Tusset, Angelo MarceloBalthazar, José Manoel [UNESP]Felix, Jorge Luis Palacios2014-05-272014-05-272013-04-01JVC/Journal of Vibration and Control, v. 19, n. 6, p. 803-813, 2013.1077-54631741-2986http://hdl.handle.net/11449/74990In this paper, an application is considered of both active and passive controls, to suppression of chaotic behavior of a simple portal frame, under the excitation of an unbalanced DC motor, with limited power supply (non-ideal problem). The adopted active control strategy consists of two controls: the nonlinear (feedforward) in order to keep the controlled system in a desirable orbit, and the feedback control, which may be obtained by considering state-dependent Riccati equation control to bringing the system into the desired orbit using a magneto rheological (MR) damper. To control the electric current applied in control of the MR damper the Bouc-Wen mathematical model was used to the MR damper. The passive control was obtained by means of a nonlinear sub-structure with properties of nonlinear energy sink. Simulations showed the efficiency of both the passive control (energy pumping) and active control strategies in the suppression of the chaotic behavior. © The Author(s) 2012.803-813engMR damperNon-ideal systemsNonlinear dynamicsSDRE controlLimited power supplyMagneto-rheological dampersMR dampersNonideal systemNonlinear energy sinkState-dependent Riccati equationStructural systemsDC motorsDynamicsMathematical modelsDampingArtigo10.1177/1077546311435518WOS:000319284400001Acesso restrito2-s2.0-84877840405