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高分辨磁旋转编码器磁鼓表露磁场分析与AMR检测磁头设计
引用本文:王立锦,胡强,滕蛟,朱逢吾.高分辨磁旋转编码器磁鼓表露磁场分析与AMR检测磁头设计[J].北京科技大学学报,2004,26(5):498-501,532.
作者姓名:王立锦  胡强  滕蛟  朱逢吾
作者单位:1. 北京科技大学材料科学与工程学院,北京,100083;中国科学院物理研究所磁学国家重点实验室,北京,100080
2. 中国科学院物理研究所磁学国家重点实验室,北京,100080
3. 北京科技大学材料科学与工程学院,北京,100083
基金项目:国家高技术研究发展计划(863计划)
摘    要:应用静磁场理论分析了高分辨磁旋转编码器磁鼓的表露磁场,通过数值计算得到磁鼓表露场分布的直观曲线.设计制作出性能优良的磁旋转编码器AMR检测磁头,理论分析结果与对磁鼓表露磁场的实际测试结果进行了分析对比.结果表明,AMR检测磁头输出信号形状与幅度及其倍频特性与理论计算结果是相符的.

关 键 词:磁性旋转编码器  各向异性磁电阻(AMR)  磁电阻磁头  高分辨  旋转编码器  磁鼓  磁场理论  分析  检测  磁头  设计制作  Magnetic  Field  Design  Surface  理论计算  倍频特性  形状  输出信号  测试结果  性能  曲线  分布  数值计算

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 Materials Science and Engineering School,University of Science and Technology Beijing,Beijing ,China State Key Laboratory of Magnetism.Analysis of Surface Magnetic Field on High-resolution Magnetic Rotary Encoders and Design for AMR Magnetic Heads[J].Journal of University of Science and Technology Beijing,2004,26(5):498-501,532.
Authors:WANG Lijin  HU Qiang  TENG Jiao  ZHU Fengwu Materials Science and Engineering School  University of Science and Technology Beijing  Beijing  China State Key Laboratory of Magnetism
Institution:WANG Lijin,HU Qiang,TENG Jiao,ZHU Fengwu Materials Science and Engineering School,University of Science and Technology Beijing,Beijing 100083,China State Key Laboratory of Magnetism,Institute of Physics,Chinese Academy of Sciences,Beijing 100080,China
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-freqency characteristic.
Keywords:magnetic rotary encoder  anisotropic magnetic resistance (AMR)  MR magnetic head
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