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A platform for research: civil engineering, architecture and urbanism
Active and passive damping of torsional vibration with a gyrostabilizer
Large Bridges are senistive to flutter which, in most cases, is associated with the aeroelastic damping coefficient in torsion becoming negative above a critical velocity. This paper investigates the use of a gyrostabilizer for damping torsional vibration. Passive damping is achieved by mounting the gimbal on a spring and damper; the maximum damping is obtained when the natural frequency of the gimbal is tuned on the structural mode to be damped. For active damping, the gimbal is actuated with a D.C. motor; the control system uses a collocated angular acceleration sensor placed on the supporting structure. Various control laws relating the angular acceleration of the supporting structure to the voltage applied to the motor are considered.
Active and passive damping of torsional vibration with a gyrostabilizer
Large Bridges are senistive to flutter which, in most cases, is associated with the aeroelastic damping coefficient in torsion becoming negative above a critical velocity. This paper investigates the use of a gyrostabilizer for damping torsional vibration. Passive damping is achieved by mounting the gimbal on a spring and damper; the maximum damping is obtained when the natural frequency of the gimbal is tuned on the structural mode to be damped. For active damping, the gimbal is actuated with a D.C. motor; the control system uses a collocated angular acceleration sensor placed on the supporting structure. Various control laws relating the angular acceleration of the supporting structure to the voltage applied to the motor are considered.
Active and passive damping of torsional vibration with a gyrostabilizer
Anckaert, D. (author) / Preumont, A. (author)
1999
6 Seiten, 16 Bilder, 9 Quellen
Conference paper
English
Präzessionsmessgerät , Drehbewegung , Brücke (Bauwerk) , Brückenbau , Flattern , Dämpfungsaggregat , Schwingungsdämpfer , Schwingungsdämpfung , Torsion , Drehschwingung , kardanische Aufhängung , Resonanzfrequenz , Gleichstrommotor , Steuerungssystem , Winkelbeschleunigung , Sensor , Winkelbeschleunigungsmessung , aktive Dämpfung
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