Structural Health Monitoring Method of Pantograph–Catenary System Based on Strain Response Inversion

Frontiers in Physics

Yibo Wei¹  Tangzheng Feng²  Yongxin Yin²  Sheng Liu³  Jinbao Lin³ 

[1] Dalian, China;Shenzhen, China;Taiyuan, China;

关键词: pantograph;    dynamic contact force;    inversion;    structural health monitoring;    FBG sensor;   

DOI  :  10.3389/fphy.2021.691510

来源: Frontiers

【 摘 要 】

Pantograph-catenary system provides electric energy for the subway lines; its health status is essential to the serviceability of the vehicle. In this study, a real-time structural health monitoring method based on strain response inversion is proposed to calculate the magnitude and position of the dynamic contact force between the catenary and pantograph. The measurement principle, calibration, and installation detail of the fiber Bragg grating (FBG) sensors are also presented in this article. Putting this monitoring system in use, an application example of a subway with a rigid overhead catenary is given to demonstrate its performance. The pantograph was monitored and analyzed, running underground at a maximum speed of 80 km/h. The results show that the strain response inversion method has high measurement accuracy, good data consistency, and flexibility on sensor installation. It can accurately calculate the magnitude and location of the contact force exerted on the pantograph.

【 授权许可】

CC BY