STUDIES OF THE FIELD DISTRIBUTION OF THE MODULATING WIDTH MULTIPOLE PERMANENT MAGNETS

XU Jian-Ming; WU Qing

Chinese Physics C> 1987, Vol. 11> Issue(3) : 369-375

STUDIES OF THE FIELD DISTRIBUTION OF THE MODULATING WIDTH MULTIPOLE PERMANENT MAGNETS

XU Jian-Ming ^, ,
WU Qing

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Abstract：
In this paper,the magnetic field distribution of the modulating width multipole permanent magnets is analyzed. Only radially magnetized permanent magnet segments are used and the required magnetic field is formed by modulating the widths of the segments in this project. In 2-dimensional ideal case pure 2N-pole magnetic field can be formed. The spatial expressions of the scalar potential for the ideal and real 2-dimensional cases are given. And the methods for reducing the undesirable higher harmonics of the magnetic field in the real case are also discussed.

References

[1]	徐建铭等, 一种永磁多极磁体的新型设计专利申请号55106663, 申请日期85年9月4日.[2] 徐清等, 原子能科学技术, Vol. 20, No. 6 (1986).

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XU Jian-Ming and WU Qing. STUDIES OF THE FIELD DISTRIBUTION OF THE MODULATING WIDTH MULTIPOLE PERMANENT MAGNETS[J]. Chinese Physics C, 1987, 11(3): 369-375.

XU Jian-Ming and WU Qing. STUDIES OF THE FIELD DISTRIBUTION OF THE MODULATING WIDTH MULTIPOLE PERMANENT MAGNETS[J]. Chinese Physics C, 1987, 11(3): 369-375. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

STUDIES OF THE FIELD DISTRIBUTION OF THE MODULATING WIDTH MULTIPOLE PERMANENT MAGNETS

XU Jian-Ming ^,
WU Qing

Corresponding author: XU Jian-Ming,

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1987-06-05

Abstract: In this paper,the magnetic field distribution of the modulating width multipole permanent magnets is analyzed. Only radially magnetized permanent magnet segments are used and the required magnetic field is formed by modulating the widths of the segments in this project. In 2-dimensional ideal case pure 2N-pole magnetic field can be formed. The spatial expressions of the scalar potential for the ideal and real 2-dimensional cases are given. And the methods for reducing the undesirable higher harmonics of the magnetic field in the real case are also discussed.