Search results for " vibration control"

showing 3 items of 13 documents

Optimal passive-damping design using a decentralized velocity-feedback H-infinity approach

2012

In this work, a new strategy to design passive energy dissipation systems for vibration control of large structures is presented. The method is based on the equivalence between passive damping systems and fully decentralized static velocity-feedback controllers. This equivalence allows to take advantage of recent developments in static output-feedback control design to formulate the passive-damping design as a single optimization problem with Linear Matrix Inequality constraints. To illustrate the application of the proposed methodology, a passive damping system is designed for the seismic protection of a five-story building with excellent results. Peer Reviewed

Work (thermodynamics)EngineeringOptimization problemDecentralized controlStructural Vibration Control:Informàtica::Automàtica i control [Àrees temàtiques de la UPC]Static output-feedbackVibration control:Enginyeria civil::Materials i estructures [Àrees temàtiques de la UPC]Feedback control systemsMatrius (Matemàtica)lcsh:QA75.5-76.95Structural vibration controlControl d'estructures (Enginyeria):93 Systems Theory; Control [Classificació AMS]Control theoryControlMatrix inequalitiesEquivalence (measure theory):93 Systems Theory [Classificació AMS]business.industryOptimal passive dampingLinear matrix inequalityControl engineeringDissipationDecentralised systemComputer Science ApplicationsH-infinity methods in control theoryControl and Systems EngineeringModeling and SimulationSistemes de control per retroacciólcsh:Electronic computers. Computer scienceStructural control (Engineering)businessSoftware
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Complex composite structures with integrated piezoelectric transducers

2016

International audience; Nowadays, in different industrial fields as transport or aerospace, a research effort is conducted to reduce the structural weight. One of the most promising solutions is the use of composite structures due to their high stiffness, their low mass density and their low damping factor. At the same time, there is an intensification of the operational dynamic environment and an increase of durability requirements. These different expectations seem to be contradictory. One solution to manage these points is to design and manufacture smart composite structures with a fully distributed set of integrated piezoelec-tric transducers. These structures are able to modify their m…

composite structureComputer scienceComposite numberComputational MechanicsMechanical engineering[SPI.MECA.MSMECA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Materials and structures in mechanics [physics.class-ph]02 engineering and technology01 natural sciences[SPI]Engineering Sciences [physics]Active vibration control0103 physical sciencesAerospace[PHYS.MECA.VIBR]Physics [physics]/Mechanics [physics]/Vibrations [physics.class-ph]010302 applied physicsbusiness.industryApplied Mathematicstransducers integration[PHYS.MECA]Physics [physics]/Mechanics [physics]material characterizationMechatronics021001 nanoscience & nanotechnologyPiezoelectricityDurabilityComputer Science ApplicationsComputational Mathematicscomplex structureModeling and SimulationDamping factorPMUT[PHYS.MECA] Physics [physics]/Mechanics [physics]0210 nano-technologybusiness
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Active-passive decentralized H∞ control for adjacent buildings under seismic excitation

2011

Author's version of a chapter in the book: Proceedings of the 18th IFAC World Congress 2011. Also available from the publisher at: http://dx.doi.org/10.3182/20110828-6-IT-1002.01192 In this paper, a control strategy to reduce the vibrational response of adjacent buildings under seismic excitation is presented. The proposed strategy combines passive linking elements with an active decentralized H∞ control system. The overall active-passive control system admits decentralized design and operation, and achieves an excellent vibrational reduction when the active control system works; in case of a full or partial failure of the active control system, a remarkable reduction in the vibrational res…

decentralized control H-infinity control structural vibration control linear matrix inequalitiesVDP::Mathematics and natural science: 400::Mathematics: 410::Applied mathematics: 413VDP::Technology: 500::Materials science and engineering: 520
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