Carvalhal, Ricardo [UNESP]Da Silva, Samuel [UNESP]Júnior, Vicente Lopes [UNESP]2014-05-272014-05-272005-12-01Conference Proceedings of the Society for Experimental Mechanics Series.2191-56442191-5652http://hdl.handle.net/11449/68674A finite element modeling of an intelligent truss structure with piezoelectric stack actuators for the purpose of active damping and structural vibration attenuation is presented. This paper concerns with the following issues aspects: the design of intelligent truss structure considering electro-mechanical coupling between the host structure and piezoelectric stack actuators; the H 2 norm approach to search for optimal placement of actuators and sensors; and finally some aspects in robust control techniques. The electro-mechanical behavior of piezoelectric elements is directly related to the successful application of the actuators in truss structures. In order to achieve the desired damping in the interested bandwidth frequency it is used the H ∞ output feedback solved by convex optimization. The constraints to be reached are written by linear matrix inequalities (LMI). The paper concludes with a numerical example, using Matlab and Simulink, in a cantilevered, 2-bay space truss structure. The results demonstrated the approach applicability.engActive dampingActuators and sensorsBandwidth frequencyControl applicationsControl techniquesElectro-mechanicalFinite element modelingHost structureIntelligent truss structureMATLAB and SIMULINKNumerical exampleOptimal placementsOutput feedbackPiezoelectric elementsPiezoelectric stack actuatorsSpace truss structureStructural vibrationsTruss structureBucklingConvex optimizationDampingExhibitionsLinear matrix inequalitiesPiezoelectricityRobust controlStructural dynamicsPiezoelectric actuatorsTrabalho apresentado em eventoAcesso aberto2-s2.0-848615387921457178419328525