Electromagnetic Analysis and Validation of an Ironless Inductive Position Sensor

被引：29

作者：

Danisi, Alessandro ^{[1
,2
]}

Masi, Alessandro ^{[1
]}

Losito, Roberto ^{[1
]}

Perriard, Yves ^{[2
]}

机构：

[1] European Org Nucl Res CERN, Dept Engn, Sources Targets & Interact Grp, CH-1211 Geneva, Switzerland

[2] Ecole Polytech Fed Lausanne, Inst Microengn, Lab Actionneurs Integres, CH-2000 Neuchatel, Switzerland

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2013年 / 62卷 / 05期

关键词：

Air-cored coils; electromagnetic modeling; ironless position sensor; linear variable differential transformer (LVDT); mutual inductance; MUTUAL INDUCTANCE; CIRCULAR COILS;

D O I：

10.1109/TIM.2012.2224274

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：

The ironless inductive position sensor is a linear position sensing structure, which exhibits intrinsic immunity to external magnetic fields since it is characterized by air-cored windings. This new solution may be of major interest for applications where external magnetic fields can be a source of interference. In this paper, an analytical model of the working principle of the sensor is proposed. The effect of the moving coil flux on the overall sensed magnetic flux is described. The model is preliminarily verified by simulations on a finite-element structure of the sensor, in order to assess its soundness. Finally, experimental measurements on a custom sensor's prototype give the definitive benchmarking of the model as a valid design tool, in the framework of the design and synthesis of the device.

引用

页码：1267 / 1275

页数：9

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