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Proceedings Paper

Low-frequency active vibration isolation system
Author(s): Robin T. Stebbins; David Newell; Sam N. Richman; Peter L. Bender; James E. Faller; James Mason
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Paper Abstract

We are developing an active vibration isolation system for reducing the disturbing effects of ground motion about six orders of magnitude between 1 and 30 Hz. The system consists of three cascaded stages, each comprising a suspended platform on which are located seismometers and actuators for six degrees of freedom. Our goal is to reduce the vibration noise to [1 X 10-13 X (1 Hz/f)2.5 + 3 X 10-15] m/(root)Hz on the third stage. We have built and tested the initial stage, which is intended to reduce our laboratory noise level to that of a quiet site. The design, control system models, measured performance and current limitations for this stage are presented. The two main stages require a vacuum environment and interferometric readout. The design and models for the main stages are also presented.

Paper Details

Date Published: 4 October 1994
PDF: 11 pages
Proc. SPIE 2264, Vibration Monitoring and Control, (4 October 1994); doi: 10.1117/12.188876
Show Author Affiliations
Robin T. Stebbins, Univ. of Colorado/Boulder (United States)
David Newell, Univ. of Colorado/Boulder (United States)
Sam N. Richman, Univ. of Colorado/Boulder (United States)
Peter L. Bender, National Institute of Standards and Technology (United States)
James E. Faller, National Institute of Standards and Technology (United States)
James Mason, Metropolitan State College (United States)

Published in SPIE Proceedings Vol. 2264:
Vibration Monitoring and Control
Colin G. Gordon, Editor(s)

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