Analysis and design of ferrite cores for eddy-current-killed oscillator inductive proximity sensors

被引：16

作者：

AnimAppiah, KD ^{[1
]}

Riad, SM ^{[1
]}

机构：

[1] VIRGINIA POLYTECH INST & STATE UNIV,BRADLEY DEPT ELECT ENGN,BLACKSBURG,VA 24061

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1997年 / 33卷 / 03期

关键词：

detectors; distance measurement; eddy currents; electromagnetic induction; inductors; industrial control; magnetic transducers; transducers;

D O I：

10.1109/20.573843

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Finite element modeling of ferrite cores used in the design of eddy-current-killed oscillator inductive proximity sensors was performed, Based on contemplation of the practical operation of the sensors, ferrite core geometries were compared with a reference core by the eddy-current power loss in a metal target at a fixed distance from the face of each transducer. Several of these cores were experimentally evaluated for sensing distance to verify the results of the simulation, It was observed that, for fixed coil, fixed target distance, and given target, the low-frequency sensing distance of a particular transducer is approximately proportional to the fourth root of eddy-current power loss in the target.

引用

页码：2274 / 2281

页数：8