Research Area: | TU/e | Year: | 2009 | ||
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Type of Publication: | Article | ||||
Authors: | Oome, AJA; Janssen, JLG; Encica, L.; Lomonova, EA; Dams, JAAt | ||||
Journal: | Sensors and Actuators, A: Physical | Volume: | 153 | ||
Number: | 2 | Pages: | 142-154 | ||
BibTex: |
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Abstract: | This paper presents an analysis of a novel, patent pending \cite{MI}, absolute velocity sensor, or geophone. Conventional geophone topologies are discussed and their intrinsic physical limitations, given by the mechanical construction, are shown. Therefore, a new topology with passive magnetic spring is proposed. A unified semi-analytical solution for the magnetic field equations is derived in cylindrical coordinates and used to determine the static response characteristics of the proposed geophone configuration. Furthermore, a prototype is built and measurements are performed and analyzed to obtain the dynamic behavior. A further improvement of the novel geophone is proposed by means of optimization using finite element analysis. |
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