Linear encoder based low frequency inertial sensor |
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| Authors: | Sylvain Hellegouarch Lionel Fueyo Roza Kurt Artoos Pierre Lambert |
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| Affiliation: | 1. BEAMS Department CP 165/56, Université Libre de Bruxelles, Brussels, Belgium;2. Engineering Department, CERN, Geneva, Switzerland |
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| Abstract: | In this article, we present a novel concept of inertial sensor, based on a linear encoder. Compared to other interferometric sensors, the encoder is much more easy to mount, and the calibration more stable. A prototype has been built and validated experimentally by comparison with a commercial seismometer. It has a resolution of about 10?pm/√Hz. In order to further improve the resolution, two concepts of mechanical amplifiers have been studied and compared. One of them is shown to be extremely promising, provided that the amplifier does not stiffen the sensor. |
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| Keywords: | Inertial sensor linear encoder mechanical amplifier |
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