A dynamic and nonlinear time grating subdivision method for magnetic levitation ruler

Jiyuan Sun; Chunlin Tian; Zhaofeng Chen; Ningye Liu

doi:10.1117/12.3025656

6 May 2024 A dynamic and nonlinear time grating subdivision method for magnetic levitation ruler

Jiyuan Sun, Chunlin Tian, Zhaofeng Chen, Ningye Liu

Proceedings Volume 13161, Fourth International Conference on Telecommunications, Optics, and Computer Science (TOCS 2023); 1316105 (2024) https://doi.org/10.1117/12.3025656
Event: Fourth International Conference on Telecommunications, Optics and Computer Science (TOCS 2023), 2023, Xi’an, China

Abstract

The displacement measurement system consists of an edge finder, a displacement drive system, and a grating. The system structure is complex. Magnetic levitation ruler can achieve both driving and detection functions simultaneously. The subdivision of the output signal of the magnetic levitation ruler can improve the detection accuracy of the magnetic levitation ruler. According to the characteristics of the magnetic levitation ruler, under the condition of constant magnetic induction intensity and horizontal control coil current, the displacement of the mover core is proportional to the square of the movement time. This article proposes a dynamic and nonlinear grid subdivision method based on the time-space conversion method. This article uses TDC-GP22 to set the length of the time grid, which can achieve 1000 times subdivision of the output signal of the magnetic levitation ruler. The subdivision of the output signal of the magnetic levitation ruler improves the measurement accuracy of the magnetic levitation ruler.

Citation Download Citation

Jiyuan Sun, Chunlin Tian, Zhaofeng Chen, and Ningye Liu "A dynamic and nonlinear time grating subdivision method for magnetic levitation ruler", Proc. SPIE 13161, Fourth International Conference on Telecommunications, Optics, and Computer Science (TOCS 2023), 1316105 (6 May 2024); https://doi.org/10.1117/12.3025656

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