Control of seismically excited vibration using electrorheological materials and Lyapunov methods

Author

Gavin, Henri P.

Author_Institution

Dept. of Civil & Environ. Eng., Duke Univ., Durham, NC, USA

Volume

9

Issue

1

fYear

2001

fDate

1/1/2001 12:00:00 AM

Firstpage

27

Lastpage

36

Abstract

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

Keywords

Lyapunov methods; bang-bang control; closed loop systems; control system synthesis; decentralised control; electrorheology; intelligent materials; structural engineering; vibration control; Lyapunov´s direct method; controllable stiffness; damping properties; decentralized bang-bang control law; electrorheological materials; ground accelerations; micromechanical simulations; rheometric measurements; seismically excited vibration; state-variable model; Acceleration; Bang-bang control; Circuit simulation; Circuit synthesis; Control system synthesis; Damping; Erbium; Micromechanical devices; Seismic measurements; Vibration control;

fLanguage

English

Journal_Title

Control Systems Technology, IEEE Transactions on

Publisher

ieee

ISSN

1063-6536

Type

jour

DOI

10.1109/87.896743

Filename

896743