Modeling Study and Parameter Identify of Eddy Acceleration Geophone
Liang Xiao, Hu Shi · Zhongguo anquan kexue xuebao · 2004
Through analyzing the working principle of eddy geophone, seven parameter model of frequency response function was derived, where the influence of electromagnetic induction of geophone shell on induced current of fixed coil was considered. The theoretical results indicated that the coupling induction affects the dynamical characteristic of the eddy acceleration geophone. The testing experiment system was designed to ascertain the geophone parameter. The experimental results evidenced that seven parameter model was effective in analyzing the eddy acceleration geophone, and could be used in controlling the dynamical characteristic of the eddy geophone.