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Electrorheological dampers and semi-active structural control

Publication ,  Journal Article
McClamroch, NH; Ortiz, DS; Gavin, HP; Hanson, RD
Published in: Proceedings of the IEEE Conference on Decision and Control
December 1, 1994

Electrorheological (ER) fluids have a number of properties that make them attractive for use in fluid-filled dampers. Our interest is in the use of such dampers for semi-active structural control. This paper provides an introduction to this subject, with emphasis given to control of large structural systems such as buildings and bridges when excited by ground motions of wind forces. It is assumed that multiple electrorheological dampers are embedded as a part of the structural system. A key aspect in the effective use of these electrorheological dampers for active control is the recognition that they are inherently nonlinear devices, the inputs being (essentially) the electric field levels applied to the electrorheological fluids in the dampers. A decentralized bang-bang control strategy is derived to minimize the rate at which energy from the disturbance is transferred to the structure. It requires feedback of the ER damper deformation rates and feedforward of a disturbance signal. The control strategy is simple to implement and has a number of desirable closed loop properties. A two degree of freedom example, illustrating base isolation of a simple building structure, is used to illustrate these closed loop properties.

Duke Scholars

Published In

Proceedings of the IEEE Conference on Decision and Control

ISSN

0191-2216

Publication Date

December 1, 1994

Volume

1

Start / End Page

97 / 102
 

Citation

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McClamroch, N. H., Ortiz, D. S., Gavin, H. P., & Hanson, R. D. (1994). Electrorheological dampers and semi-active structural control. Proceedings of the IEEE Conference on Decision and Control, 1, 97–102.
McClamroch, N. H., D. S. Ortiz, H. P. Gavin, and R. D. Hanson. “Electrorheological dampers and semi-active structural control.” Proceedings of the IEEE Conference on Decision and Control 1 (December 1, 1994): 97–102.
McClamroch NH, Ortiz DS, Gavin HP, Hanson RD. Electrorheological dampers and semi-active structural control. Proceedings of the IEEE Conference on Decision and Control. 1994 Dec 1;1:97–102.
McClamroch, N. H., et al. “Electrorheological dampers and semi-active structural control.” Proceedings of the IEEE Conference on Decision and Control, vol. 1, Dec. 1994, pp. 97–102.
McClamroch NH, Ortiz DS, Gavin HP, Hanson RD. Electrorheological dampers and semi-active structural control. Proceedings of the IEEE Conference on Decision and Control. 1994 Dec 1;1:97–102.

Published In

Proceedings of the IEEE Conference on Decision and Control

ISSN

0191-2216

Publication Date

December 1, 1994

Volume

1

Start / End Page

97 / 102