Switching Oil Damper with Built-in Controller for Structural Control
Publication: Journal of Structural Engineering
Volume 129, Issue 7
Abstract
This paper presents a simple semiactive oil damper developed for an actual application. This device can dissipate twice as much energy imposed by wind or earthquake forces as an ordinary passive damper by switching the opening of the on/off valve according to a signal from a controller. Because the system employs a decentralized control algorithm that uses only a built-in sensors’ information, each device can be equipped with all the necessary control equipment such as sensors and a controller. This simple construction has several advantages in actual application. First, we discuss the control algorithm and compare the control performance with that of the passive damper. Second, we describe the construction of the developed full-scale device. Finally, we present the results of a dynamic loading test conducted on a full-scale device. The developed device showed stable performance under a nonstationary excitation as well as a harmonic loading, and the improved energy dissipation capacity was clearly recognized. It is also confirmed that the damper’s dynamic behavior can be accurately simulated with simple analytical parameters.
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Reference
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Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 7 • July 2003
Pages: 895 - 904
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Aug 20, 2001
Accepted: Oct 2, 2002
Published online: Jun 13, 2003
Published in print: Jul 2003
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