Published November 1, 1990
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Journal Article
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Analysis and Testing of the FBA-11 Force [Balance] Accelerometer
Abstract
The FBA-11 is a feedback-controlled accelerometer widely used to measure and record accelerations arising from earthquakes. It has found application both for structural response and for ground motion studies. The design intent of the FBA-11 was to provide electronic control of the natural frequency, damping, and output voltage. Included in this paper are (1) a circuit analysis yielding the complete closed-loop transfer function, and (2) the corroborative test results from shake table evaluations. The transfer function can be used to correct recorded accelerations for instrument response.
Additional Information
©1990 Earthquake Spectra. The FBA was designed by E.L. Holbrook of Kinemetrics Systems. The circuit analysis was carried out by W.F. Miller of the Caltech Seismological Laboratory. The shake table tests were conducted by E.L. Holbrook of Kinemetrics Systems and B. Hushmand of Earth Technology, Inc. Preparation of the original manuscript, using the scientific word processor, Chi Writer, by J.A. Viengkhou and of the final manuscript in Word Perfect 5.1 by M.J. Donaldson, is gratefully acknowledged. Partial support of the shake table tests was provided by the National Science Foundation under Grant ECE-8419431. See Also: Errata. Earthquake Spectra 7, 160 (1991).Files
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- Eprint ID
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- CaltechAUTHORS:RIHes90
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2008-06-12Created from EPrint's datestamp field
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