Research on Non-contact Angle Measurement Based on AMR Effect

被引：1
作者：
Huang, Yinguo [1 ]
Zhuang, Shuya [1 ]
Wang, Zhiyi [1 ]
Zhang, Xiaomei [1 ]
Zhao, Meirong [1 ]
机构：
[1] Tianjin Univ, State Key Lab Precis Measuring Technol & Instrume, Tianjin, Peoples R China
来源：
COMMUNICATIONS, SIGNAL PROCESSING, AND SYSTEMS | 2019年 / 463卷
关键词：
Angle measurement; Non-contact; AMR; Wheatstone bridge;
D O I：
10.1007/978-981-10-6571-2_245
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 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 degrees 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.
引用
收藏
页码：2013 / 2019
页数：7
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