Modeling and experiment of the suspended seismometer concept for attenuating the contribution of tilt motion in horizontal measurements

Matichard, F., Evans, M., Mittleman, R., MacInnis, M., Biscans, S., Dooley, Katherine ORCID: https://orcid.org/0000-0002-1636-0233, Sohier, H., Lauriero, A., Paris, H., Koch, J., Knothe, P., Carbajo, A. and Dufort, C. 2016. Modeling and experiment of the suspended seismometer concept for attenuating the contribution of tilt motion in horizontal measurements. Review of Scientific Instruments 87 (6) , 065002. 10.1063/1.4953110

Preview

PDF - Accepted Post-Print Version Download (1MB) | Preview

Abstract

Tilt-horizontal coupling in inertial sensors limits the performance of active isolation systems such as those used in gravitational wave detectors. Inertial rotation sensors can be used to subtract the tilt component from the signal produced by horizontal inertial sensors, but such techniques are often limited by the sensor noise of the tilt measurement. A different approach is to mechanically filter the tilt transmitted to the horizontal inertial sensor, as discussed in this article. This technique does not require an auxiliary rotation sensor and can produce a lower noise measurement. The concept investigated uses a mechanical suspension to isolate the inertial sensor from input tilt. Modeling and simulations show that such a configuration can be used to adequately attenuate the tilt transmitted to the instrument, while maintaining translation sensitivity in the frequency band of interest. The analysis is supported by experimental results showing that this approach is a viable solution to overcome the tilt problem in the field of active inertial isolation.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	American Institute of Physics
ISSN:	0034-6748
Date of First Compliant Deposit:	12 February 2018
Date of Acceptance:	1 May 2016
Last Modified:	17 Nov 2024 04:30
URI:	https://orca.cardiff.ac.uk/id/eprint/108615

Citation Data

Cited 8 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item