Modeling and analysis of magnetic field distribution of square pane permanent magnet for intelligent ball joint

Liang Zhu; Penghao Hu; Wenguo Yang; Xueming Dang; Lisong Zhang

doi:10.1117/12.2214161

26 January 2016 Modeling and analysis of magnetic field distribution of square pane permanent magnet for intelligent ball joint

Liang Zhu, Penghao Hu, Wenguo Yang, Xueming Dang, Lisong Zhang

Author Affiliations +

Proceedings Volume 9903, Seventh International Symposium on Precision Mechanical Measurements; 99030A (2016) https://doi.org/10.1117/12.2214161
Event: Seventh International Symposium on Precision Mechanical Measurements, 2015, Xia'men, China

Abstract

The reasonable permanent magnetic field distribution has an important influence on improving the measuring accuracy in intelligent ball joint. In view of the defects on the ring permanent magnet in the previous experiment scheme, a new method on Square Pane Permanent Magnet (SPPM) is put forward. It possesses distinct advantages on orientation identification and model simplification. This paper proposes an optimized theory model of the magnetic field distribution of SPPM and gives the magnetic field theoretical expressions. The experiments have shown that the experimental data basically agreed with the theory value which is less than 4.3% error in full scale. This result verified the correctness of the analytic work and paves the way for improving the measurement accuracy in intelligent ball joint.

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Liang Zhu, Penghao Hu, Wenguo Yang, Xueming Dang, and Lisong Zhang "Modeling and analysis of magnetic field distribution of square pane permanent magnet for intelligent ball joint", Proc. SPIE 9903, Seventh International Symposium on Precision Mechanical Measurements, 99030A (26 January 2016); https://doi.org/10.1117/12.2214161

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KEYWORDS

Magnetism

Sensors

Magnetic sensors

Error analysis

Superposition

Analytical research

Mathematical modeling

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