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2019 | OriginalPaper | Chapter

Research on Non-contact Angle Measurement Based on AMR Effect

Authors : Yinguo Huang, Shuya Zhuang, Zhiyi Wang, Xiaomei Zhang, Meirong Zhao

Published in: Communications, Signal Processing, and Systems

Publisher: Springer Singapore

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Abstract

A non-contact angle measuring method based on AMR effect is proposed in this paper. The method improves the measurement sensitivity and resolution with a Wheatstone bridge. In this paper, the function of the output voltage of the Wheatstone bridge is derived, which is on the angle between the direction of the external magnetic field and the bridge. Besides, the magnetic field distribution of a radially magnetized permanent magnet is analyzed. A device for measuring the angle in the range of ±10° is designed, and the sensitivity of the device is about 15 mV/arcminute. The method introduced in this paper has advantages of simple structure, low cost, high sensitivity and free from space limitation.

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Title: Research on Non-contact Angle Measurement Based on AMR Effect
Authors: Yinguo Huang
Shuya Zhuang
Zhiyi Wang
Xiaomei Zhang
Meirong Zhao
Publisher: Springer Singapore
Book: Communications, Signal Processing, and Systems
Print ISBN: 978-981-10-6570-5

Electronic ISBN: 978-981-10-6571-2

Copyright Year: 2019
DOI: https://doi.org/10.1007/978-981-10-6571-2_245