High precision dynamic measurement method for axial clearance based on time division multiplexing with dispersive interferometry

High precision dynamic measurement method for axial clearance based on time division multiplexing with dispersive interferometry

Rotor-stator axial clearance is a crucial design parameter affecting rotating machines’ efficiency and safety. To accurately measure the dynamic axial clearance in high-speed machinery, a precise method based on time division multiplexing with frequency domain interferometry has been proposed. This...

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Veröffentlicht in:Optics express 2023-08, Vol.31 (17), p.28549
Hauptverfasser: Duan, Fajie, Li, Xiuming, Bao, Ruijia, Fu, Xiao, Liu, Wenzheng, Yu, Zhenxin, Guo, Guanghui
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container_issue 17
container_start_page 28549
container_title Optics express
container_volume 31
creator Duan, Fajie
Li, Xiuming
Bao, Ruijia
Fu, Xiao
Liu, Wenzheng
Yu, Zhenxin
Guo, Guanghui
description Rotor-stator axial clearance is a crucial design parameter affecting rotating machines’ efficiency and safety. To accurately measure the dynamic axial clearance in high-speed machinery, a precise method based on time division multiplexing with frequency domain interferometry has been proposed. This method has proven robust and accurate through simulations and experiments. The inclusion of an optical switch enables the utilization of dispersive interferometry(DPI) and time division multiplexing for multiple channels of the light source. It achieves a static accuracy of 1.5 µm for a 15 mm range and a dynamic accuracy of 9 µm at 3000 rpm.
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title High precision dynamic measurement method for axial clearance based on time division multiplexing with dispersive interferometry
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