Defect Diagnosis of Rigid Catenary System Based on Pantograph Vibration Performance

Author:

Tan Mengying1ORCID,Li Haishangyang1,Nie Lei1

Affiliation:

1. Hubei Key Laboratory of Modern Manufacturing Quality Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430074, China

Abstract

The condition of a catenary is significant to ensure a high current collection quality. Owing to the dynamic interaction between the pantograph and the catenary system, the vibration of the pantograph can be used to analyze the condition of the catenary system. Therefore, we developed a novel diagnosis system based on the correlation between catenary defects and pantograph vibration. The proposed system is capable of detecting the type and location of commonly encountered defects in rigid support catenary systems. Catenary positioning coefficient and enhanced sample entropy methods were proposed for the extraction of defect features, and subsequently, linear discriminate analysis was used to diagnose the type and location of the catenary defects. Finally, the proposed defect detection and diagnosis system was applied to a commercial metro line, and the results verified the reliability and effectiveness of this diagnosis system.

Funder

Scientific Research Foundation

Hubei Key Laboratory of Modern Manufacturing Quality Engineering Open Project Fund

Foundation of Hubei Educational Committee

Publisher

MDPI AG

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