Semiactive Control Strategies for MR Dampers: Comparative Study
Publication: Journal of Engineering Mechanics
Volume 126, Issue 8
Abstract
This paper presents the results of a study to evaluate the performance of a number of recently proposed semiactive control algorithms for use with multiple magnetorheological (MR) dampers. Various control algorithms used in recent semiactive control studies are considered including the Lyapunov controller, decentralized bang-bang controller, modulated homogeneous friction algorithm, and a clipped optimal controller. Each algorithm is formulated for use with the MR damper. Additionally, each algorithm uses measurements of the absolute acceleration and device displacements for determining the control action to ensure that the algorithms could be implemented on a physical structure. The performance of the algorithms is compared through a numerical example, and the advantages of each algorithm are discussed. The numerical example considers a six-story structure controlled with MR dampers on the lower two floors. In simulation, an El Centro earthquake is used to excite the system, and the reduction in the drifts, accelerations, and relative displacements throughout the structure is examined.
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Information & Authors
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Published In
Journal of Engineering Mechanics
Volume 126 • Issue 8 • August 2000
Pages: 795 - 803
History
Received: Apr 12, 1999
Published online: Aug 1, 2000
Published in print: Aug 2000
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