Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 9 of 9 for “"Damping device"”.
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Passive electromagnetic damping device for motion control of building structures
… research presented in this thesis develops a new device for the passive control of motion in building structures: an electromagnetic damper. The electromagnetic damper is a self-excited device that provides a reaction force to an applied motion. We chose a tubular permanent-magnet linear machine …
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A dynamic damping device for payload pendulations of construction cranes
… construction industry through the application of damping systems on construction cranes. To achieve this goaL an experimental model will be developed and tested. The design process will include an analysis of operational constraints, theoretical design, and physical testing. Tuned mass damping …
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Dynamic range implications for the effectiveness of semi-active tuned mass dampers
… tuned mass damper (TMD), which acts as a passive damping device in the region of the tuned frequency. However, TMDs exhibit a limited bandwidth and often require a significant mass. Active systems, such as the active mass driver, have been utilized to improve the effectiveness of the TMD concept, …
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Input identification, footbridge control and non-linear identification of a MR damper
… identification of a realistic model for the damping device and semi-active control of the magneto-rheological damper. In this respect, input identification techniques are a useful tool and an aid for the control law design. As a consequence, the second part involves both input identification …
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Damping acoustic pressure pulsations in pipelines using Helmholtz resonators
… fatigue failure. In this thesis, an acoustic damping device known as the Helmholtz resonator (HR) is experimentally studied. The effects of HR cavity volume, pipeline diameter, HR location, the use of multiple HRs, and mean flow velocity are investigated to determine their effects on the …
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Granular sloshing absorbers for vibration control
… Mass Dampers and Tuned Liquid Dampers. These devices provide optimal damping at the natural frequency of the structure. This thesis proposes a novel passive damping device, that uses a granular material sloshing in a rotating cylindrical container as the energy sink. Tuning of a granular …
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Development of a robotic torque application gripper for automated furniture assembly
… discussed, as well as the design of the fluid damping device. The power train design and analysis is then briefly described with an emphasis on efficiency and evaluating the usefulness of the approach that I took. The next area of concern is a characterization of the kinematics of the grasping …
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Control of large-scale structures with large uncertainties
… the application of semi-active and active damping systems, such as large modeling uncertainties that are inherent to large-scale structures, limited state measurements, lack of mechanically reliable control devices, large power requirements, and the need for robust controllers. In order to …
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Passive damping mechanism of Herschel-Quincke tubes for pressure pulsations in piping systems
… phenomenon known as acoustic resonance. Passive damping devices such as the Herschel-Quincke (HQ) Tube can be implemented into a resonant system to mitigate the pressure pulsations. Some practical considerations have been clarified in the current work which include the normalization of the …