Free-mass reciprocity calibration
作者:
Thomas B. Gabrielson,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1997)
卷期:
Volume 102,
issue 5
页码: 2800-2808
ISSN:0001-4966
年代: 1997
DOI:10.1121/1.420336
出版商: Acoustical Society of America
数据来源: AIP
摘要:
A simple method for reciprocity calibration of accelerometers and velocity sensors is presented. The useful frequency range is from about 1 Hz to a kilohertz or more and the method is capable of subpercent accuracy. Calibrations with excitation levels from 1 to300 mm/s2(0.1 mg to 0.03 g) were produced in prototype fixtures. The device to be calibrated and two geophones are used in the calibration fixture. Since the geophones are both reciprocal, a direct test of reciprocity can be done prior to the calibration to evaluate the apparatus. In contrast to standard techniques, the method requires only one relatively inexpensive mechanical setup.
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