Analysis and Compensation of Lorentz Force Magnetic Bearing Magnetic Flux Density Uniformity Error

被引：1

作者：

Yu, Chunmiao ^{[1
]}

Cai, Yuanwen ^{[1
]}

Wang, Weijie ^{[1
]}

Han, Wenjing ^{[1
]}

Yin, Zengyuan ^{[2
]}

Han, Wenting ^{[1
]}

机构：

[1] Space Engn Univ, Dept Astronaut Sci & Technol, Beijing 101416, Peoples R China

[2] Astronaut Ctr China, Beijing 100094, Peoples R China

来源：

SENSORS | 2024年 / 24卷 / 09期

基金：

中国国家自然科学基金;

关键词：

angular rate sensitivity; error compensation; Lorentz force magnetic bearing (LFMB); magnetic flux density; rotor tilt;

D O I：

10.3390/s24092683

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Aiming at the influence of the magnetic flux density uniformity error (MFDUE) of the Lorentz force magnetic bearing (LFMB) on the sensitivity accuracy of magnetically suspended control and sensing gyroscopes (MSCSGs) on the angular rate of a spacecraft, a high precision measurement method of the angular rate of a spacecraft based on the MFDUE compensation of LFMB is proposed. Firstly, the structure of MSCSG and the sensitivity principle of MSCSG to the spacecraft angular rate are introduced. The mechanism influencing the accuracy of MSCSG to spacecraft angular rate sensitivity is deduced based on the definition of magnetic flux density uniformity. Secondly, the 3D magnetic flux distribution of LFMB is analyzed using ANSYS. The relationship between the rotor tilt angle, tilt angular rate, and magnetic flux density is established. The induced current calculation model due to MFDUE is proposed, and the LFMB magnetic flux density error compensation is realized. Finally, the simulation results show that the estimation accuracy of the induced current by the proposed method can reach 96%, and the simulation and the experiment show that the error compensation method can improve the accuracy of MSCSG in measuring the spacecraft angular rate by 12.5%.

引用

页数：16

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