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Control of seismically excited vibration using electrorheological materials and Lyapunov methods

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1 Author(s)
Gavin, H.P. ; Dept. of Civil & Environ. Eng., Duke Univ., Durham, NC, USA

Describes the use of electrorheological (ER) materials in a vibration control system designed to suppress earthquake-excited vibrations. A state-variable model for the ER device is based on micromechanical simulations and rheometric measurements of ER materials. A decentralized bang-bang control law is synthesized using Lyapunov's direct method and is implemented using analog circuitry. The behavior of the closed-loop system is illustrated on a small scale (1:15) building model driven by ground accelerations. The combined effects and relative importance of the controllable stiffness and damping properties of ER materials are examined

Published in:

Control Systems Technology, IEEE Transactions on  (Volume:9 ,  Issue: 1 )

Date of Publication:

Jan 2001

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