Magneto-optical rotational speed sensor

被引：68

作者：

Didosyan, YS

Hauser, H ^{[1
]}

Wolfmayr, H

Nicolics, J

Fulmek, P

机构：

[1] Tech Univ Vienna, A-1060 Vienna, Austria

[2] Christian Doppler Lab Automot Measurement Technol, Vienna, Austria

[3] Siemens AG, CTMM1, Erlangen, Germany

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2003年 / 106卷 / 1-3期

关键词：

magneto-optical; rotational speed; angular speed; angular velocity; rotational velocity; magnetic field sensor; angular position; orthoferrite; transparent ferromagnet;

D O I：

10.1016/S0924-4247(03)00158-4

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：

A new passive and wireless magneto-optical rotational velocity sensor is described. It is based on measuring the intensity oscillations of linearly polarized light transmitted through an orthoferrite plate and an analyzer. The plate is subjected to the action of the magnetic field of a disc whose angular velocity has to be measured. Thanks to the high velocity and smooth reproducible character of the domain wall motion in the orthoferrite plate, one can continuously measure angular velocities in a very wide range-from ultralow to the MHz range. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：168 / 171

页数：4