Modeling and optimization design of embedded time-grating sensor based on magnetic equivalent circuit

Shuang-yuan Yang; Xi-hou Chen; Tao Luo; Guo-li Zhu; Hai-ning Zhou; Ye Tao

doi:10.1117/12.2612165

19 November 2021 Modeling and optimization design of embedded time-grating sensor based on magnetic equivalent circuit

Shuang-yuan Yang, Xi-hou Chen, Tao Luo, Guo-li Zhu, Hai-ning Zhou, Ye Tao

Proceedings Volume 12059, Tenth International Symposium on Precision Mechanical Measurements; 120591F (2021) https://doi.org/10.1117/12.2612165
Event: Tenth International Symposium on Precision Mechanical Measurements, 2021, Qingdao, China

Abstract

In fields such as wind power, shipping and so on, there are great demands for linear and (or) rotary precision positioning of heavy or supersized mechanicals; and the areas where required high reliability, like aerospace and weaponry, there are also urgent needs to perform synchronous position measurement through a multipoint redundant structure in a narrow space to deal with the impact of strong shock vibration and electromagnetic interference. As grating encoders and magnetic grating encoders are difficult to meet the requirements of the extreme space size and working environment above, this paper proposes an embedded measurement method that integrates magnetic sensing modules (MSMs) and the measured transmission part. Its principle is that place several small MSMs next to the measured transmission part to form a specific time-varying magnetic field, and then make use of the periodic equipartition structure of the transmission part itself to realize the permeance modulation to get the induced voltage that reflects the position change, finally, calculate the displacement. Based on the magnetic equivalent circuit (MEC), this paper builds an embedded time-grating (ETG) sensor model applied to gear parts. According to that, take a spur gear as the object for rapid optimization design, which is verified by three-dimensional (3-D) time stepping finite element analysis (TSFEA). Finally, an experimental prototype is made by the optimized sensor parameters, and experimentally verify the results. The results show that the high-accuracy measurement is realized, and the measurement error achieves ±5″ within the entire range.

Citation Download Citation

Shuang-yuan Yang, Xi-hou Chen, Tao Luo, Guo-li Zhu, Hai-ning Zhou, and Ye Tao "Modeling and optimization design of embedded time-grating sensor based on magnetic equivalent circuit", Proc. SPIE 12059, Tenth International Symposium on Precision Mechanical Measurements, 120591F (19 November 2021); https://doi.org/10.1117/12.2612165

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KEYWORDS

Sensors

Teeth

Magnetic sensors

Magnetism

3D modeling

Error analysis

Optimization (mathematics)

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