High-speed Railway Contact Network Device System Fault Diagnosis Prediction With Reliability

The high-speed railway contact network device system is a high-speed rail contact network,and ensures the overall supply of the contact network to the device and the facility collection.Due to the interaction of the trachee network interaction,"loose break break" in the device system,causing dynamic static geometric parameters to endanger high-speed rail safety operations.Therefore,it is an important guarantee for the high-speed railway safe and efficient operation of the high-speed railway under large-scale construction conditions.This thesis relies on the China Railway Xi’an Bureau Group Co.,Ltd.Tube Daxi high-speed rail 6C system defect problem library data,which can reflect the typical high-frequency defect failure event that reflects the change of the contact network device system,respectively,from the device components and structural parts,respectively.The level of reliability affects the reliability analysis of the level,and the low-reliability structural part is reliability,in order to provide optimization measures for contact network maintenance and maintenance.The specific content is as follows:(1)The detection and positioning of high frequency defect fault events are completed.About the "arch contact pressure,high-profile value,and a cross-contact line high" in the big West line,the four types of main 1c dynamic defect parameters are statistically analyzed;proposing the importance of the integrated maintenance for the results of statistical analysis,Evaluating the maximum importance value of 16.85 in the bow network contact pressure,selecting the "Bow Net Contact Pressure Abnormal" as a typical high-frequency defect failure event in the line.(2)Solve the uncertainty problem of the degree of device system failure,logical relationship,and fault probability.According to the status quantization index of the contact network,the degree of failure of the fuzzy number [0,1] is redefined;the analysis of the related TS FFT analysis model is obtained based on the fault association analysis and the TS blur gate event output.Evaluation indicators,evaluated the fuzzy door rules L and derive the fuzzy possibility of each level event.(3)Complete the fault diagnosis of the device system affecting the "Abnormab Net Contact Pressure Abnormal".Based on TS Important Analysis Method,quantitatively handled the degree of reliability of the transition analysis model and the flat wrist arm fault analysis model;obtain the wadband arm,the plate arm iron anchor plate(including U-shaped hoop)whate and The base panever,which affects the low-reliability weaknesses and weak structural parts that affect the "abnormality of"arch contact pressure abnormalities ".(4)Solve technical needs using defective data to perform reliability prediction and optimization contact network maintenance and maintenance operations.The technical state Markov degenerative model of the iron anchor plate(including the U-shaped hug)is constructed,and the related reliability prediction indicators are derived through 4C data,and the technical state degradation process prediction and the value of parts in different degradation conditions are carried out.Prediction;compared to actual 4C data verification of the applicability and effectiveness of the model;combined with reliability predictive analysis results,it provides recommendations and specific measures for contact network maintenance and maintenance work cycle.