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Proceedings Paper

ER dampers in vibroprotection systems of precision equipment
Author(s): Evguenia V. Korobko; Zinovy P. Shulman; Leonid N. Danilevski
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Paper Abstract

The increased requirements on the accuracy of measurements with the aid of large-weight electronic-optical devices have entailed heavy demands for their efficient protection against low-vibration vibrations produced by an occasional external load or operator's pushes. In these cases, the means of active protection against vibrations used, e.g., in adjustment stands are considered to be the most efficient ones. Among actuating mechanisms of such systems, i.e. hydro- and pneumohydraulic, electromechanical and friction devices, the viscous-friction dampers show much promise since use of electrorheological fluids in the latter allows their functional capabilities to be extended owing to control of the elastoviscous parameters of a working fluid. An analysis is made of vibrations of a single-mass system (an electronic microscope column) whose vibroprotection scheme includes four ER-dampers. Their control is accomplished by a voltage unit in discrete as well as in follow-up linear and logarithmic regimes. The results obtained are compared with experimental data for the systems without dampers, with passive dampers and controllable ER-dampers. The latter are shown to be advantageous, in particular, a three- fold decrease of the Q-factor of the system under forced vibration is reached in the optimum control.

Paper Details

Date Published: 16 June 1998
PDF: 9 pages
Proc. SPIE 3327, Smart Structures and Materials 1998: Passive Damping and Isolation, (16 June 1998); doi: 10.1117/12.310689
Show Author Affiliations
Evguenia V. Korobko, A.V. Luikov Heat and Mass Transfer Institute (Belarus)
Zinovy P. Shulman, A.V. Luikov Heat and Mass Transfer Institute (Belarus)
Leonid N. Danilevski, A.V. Luikov Heat and Mass Transfer Institute (Belarus)

Published in SPIE Proceedings Vol. 3327:
Smart Structures and Materials 1998: Passive Damping and Isolation
L. Porter Davis, Editor(s)

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