Analysis of Surface Magnetic Field on High-resolution Magnetic Rotary Encoders and Design for AMR Magnetic Heads

WANG Lijin; HU Qiang; TENG Jiao; ZHU Fengwu

doi:10.13374/j.issn1001-053x.2004.05.012

Volume 26 Issue 5

Aug. 2021

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Article Navigation > Chinese Journal of Engineering > 2004 > 26(5): 498-501,532

WANG Lijin, HU Qiang, TENG Jiao, ZHU Fengwu. Analysis of Surface Magnetic Field on High-resolution Magnetic Rotary Encoders and Design for AMR Magnetic Heads[J]. Chinese Journal of Engineering, 2004, 26(5): 498-501,532. doi: 10.13374/j.issn1001-053x.2004.05.012

Citation:

WANG Lijin, HU Qiang, TENG Jiao, ZHU Fengwu. Analysis of Surface Magnetic Field on High-resolution Magnetic Rotary Encoders and Design for AMR Magnetic Heads[J]. Chinese Journal of Engineering, 2004, 26(5): 498-501,532. doi: 10.13374/j.issn1001-053x.2004.05.012

Citation:

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Analysis of Surface Magnetic Field on High-resolution Magnetic Rotary Encoders and Design for AMR Magnetic Heads

doi: 10.13374/j.issn1001-053x.2004.05.012

1. Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
2. State Key Laboratory of Magnetism, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

Received Date: 2004-03-18
Available Online: 2021-08-17

Abstract

Abstract

Based on the theory of static magnetic field, the surface magnetic field on the high-resolution multi-pole magnetic drum for a magnetic rotary encoder was analyzed. The visual curves of the surface magnetic field distribution were obtained by numerical calculation and plotting. A good AMR magnetic head for the magnetic rotary encoder was designed. The results of theoretical analysis and practical test were contrasted. The results are accorded in the output signal's shape and amplitude of the AMR magnetic head and its multi-frequency characteristic.
- magnetic rotary encoder,
- anisotropic magnetic resistance （AMR）,
- MR magnetic head