TY - JOUR
T1 - Modeling of an electromagnetic geophone with passive magnetic spring
AU - Oome, A.J.J.A.
AU - Janssen, J.L.G.
AU - Encica, L.
AU - Lomonova, E.A.
AU - Dams, J.A.A.T.
PY - 2009
Y1 - 2009
N2 - This paper presents an analysis of a novel, patent pending [Magnetic Innovations, www.MagneticInnovations.com], 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
AB - This paper presents an analysis of a novel, patent pending [Magnetic Innovations, www.MagneticInnovations.com], 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
U2 - 10.1016/j.sna.2009.04.019
DO - 10.1016/j.sna.2009.04.019
M3 - Article
SN - 0924-4247
VL - 153
SP - 142
EP - 154
JO - Sensors and Actuators, A: Physical
JF - Sensors and Actuators, A: Physical
IS - 2
ER -