涡流检波器建模研究及参数识别

Modeling Study and Parameter Identify of Eddy Acceleration Geophone

笔者分析了涡流检波器的工作原理 :综合考虑了检波器磁路系统中 ,外壳、磁靴等部件的电磁感应对固定线圈感应电流的影响 ;建立了七参数的动力学模型。理论分析表明 :涡流检波器的外壳系统的附加耦合效应 ,影响了检波器的频率特性。在上述分析和研究的基础上 ,设计了检波器参数识别实验系统 ;验证了七参数动力学模型的合理性 ;研究的结论为检波器结构设计中改善和控制其特性参数、提高其工作安全可靠性等 ,提供了理论依据。

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.