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Proceedings Paper

Semi-active control of flexural vibrations with an MR fluid actuator
Author(s): Jinkyoo Lee; William W. Clark
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Paper Abstract

The objective of this paper is to show an application of structural vibration control using a magnetorheological (MR) fluid actuator for a structural system to which is applied external forces. In order to control the structural vibration two control methods are applied and compared on the basis of variation control performance and energy consumption. One method is a fully-on control where the MR fluids are energized all the time so that the actuator performs as a tuned passive damper. The other method is a semi-active control of the input voltage whereby an MR fluid actuator is activated only for part of the vibration cycle. The structure used in this paper is a simply supported, uniform, homogeneous flexible beam. The MR fluid actuator is attached to the structural system in parallel. In this system the control inputs are moments at the points of the actuator attached to the system. The results of this paper show that the MR fluid actuator with the semi- active control method provide good vibration suppression with low energy consumption.

Paper Details

Date Published: 2 June 1999
PDF: 8 pages
Proc. SPIE 3672, Smart Structures and Materials 1999: Passive Damping and Isolation, (2 June 1999); doi: 10.1117/12.349779
Show Author Affiliations
Jinkyoo Lee, Univ. of Pittsburgh (United States)
William W. Clark, Univ. of Pittsburgh (United States)


Published in SPIE Proceedings Vol. 3672:
Smart Structures and Materials 1999: Passive Damping and Isolation
T. Tupper Hyde, Editor(s)

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