Abstract
The rotational magnetic field of radial magnetic bearings characterizes remarkable time and spatial nonlinearity due to the eddy current and induced electromagnetic field. It is significant to experimentally obtain the features of the rotational magnetic field of the radial magnetic bearings to validate the theoretical analysis and reveal the discipline of a rotational magnetic field. This paper developed thin-slice fiber Bragg grating-giant magnetostrictive material (FBG-GMM) magnetic sensors to measure air-gap flux density of a radial magnetic bearing with a rotating rotor; a radial magnetic bearing test rig was constructed and the rotational magnetic field with different rotation speed was measured. Moreover, the finite element method (FEM) was used to simulate the rotational magnetic field; the measurement results and FEM results were investigated, and it was concluded that the FBG-GMM sensors were capable of measuring the radial magnetic bearing’s air gap flux density with a rotating rotor, and the measurement results showed a certain degree of accuracy.
© 2017 Optical Society of America
Full Article | PDF ArticleMore Like This
Shaoyi Xu, Qiang Peng, Fangfang Xing, and Junwen Sun
Appl. Opt. 60(31) 9741-9747 (2021)
Qiyong Qin, Wenhua Zhu, Beihang Xi, Tao Yang, Ruohui Wang, and Xueguang Qiao
Appl. Opt. 62(16) E62-E69 (2023)
Lidan Lu, Wei Zhuang, Hong Li, Xiaoping Lou, and Lianqing Zhu
Appl. Opt. 56(2) 211-217 (2017)