Low-frequency active vibration isolation system

Robin T. Stebbins; David Newell; Sam N. Richman; Peter L. Bender; James E. Faller; James Mason

doi:10.1117/12.188876

4 October 1994 Low-frequency active vibration isolation system

Robin T. Stebbins, David Newell, Sam N. Richman, Peter L. Bender, James E. Faller, James Mason

Proceedings Volume 2264, Vibration Monitoring and Control; (1994) https://doi.org/10.1117/12.188876
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

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.

Citation Download Citation

Robin T. Stebbins, David Newell, Sam N. Richman, Peter L. Bender, James E. Faller, and James Mason "Low-frequency active vibration isolation system", Proc. SPIE 2264, Vibration Monitoring and Control, (4 October 1994); https://doi.org/10.1117/12.188876

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