Health Status Evaluation of Metro Vehicle Bogie System Based on Variable Weight Fuzzy Synthesis Method and Artificial Neural Network
Journal Title: Urban Mass Transit - Year 2024, Vol 27, Issue 2
Abstract
[Objective] In contrast to the planned and faulty maintenance modes commonly used in modern metro vehicles, condition-based repair can capture the health status and operation condition of the vehicle system while optimizing maintenance strategies and costs. To realize condition-based repair, the health status of vehicle system needs to be accurately evaluated. [Method] Focusing on metro vehicle bogie system as object, the evaluation method of its health status is studied in-depth. Based on the hierarchical characteristics of bogie system composition, with reference to the degree of deterioration, combining the analytical hierarchy process method and variable weight theory are combined, to establish the variable weight fuzzy comprehensive evaluation model of metro vehicle bogie based on deterioration degree according to using the idea of fuzzy comprehensive judgment, and the modelling process is proposed. By evaluating the health status of the selected metro vehicle bogie system with the health status evaluation indexes, sample data is obtained and used to train three different artificial neural networks, namely, BP (back propagation) neural network, support vector machine and random forest. Then, the evaluation performance of the three different types of artificial neural networks is judged with actual test data. [Result & Conclusion] The random forest model has the strongest ability to identify the health status of the metro vehicle bogie system and realizes the intelligent health assessment of the metro bogie system.
Authors and Affiliations
Lei ZHANG, Bin Han, Qianqi FAN
Keywords
Related Articles
- EP ID EP730098
- DOI 10.16037/j.1007-869x.2024.02.033
- Views 27
- Downloads 0
Disturbance Deformation Influence and Field Measurement Study of Metro Shield Under-passing High Building Foundation
Objective With an increasing number of cases involving metro shield tunneling through or in proximity to high buildings in urban rail transit projects, the shield tunneling method inevitably causes disturbances to the gr...
Air Defense Scheme of Airside MRT Vehicle Base in Shanghai Pudong International Airport
Objective The air defense control mode for airside MRT（mass rapid transit system） vehicle base of the airport directly affects the airport air defense safety and vehicle maintenance efficiency. Incorporating Pudong Int...
Analysis of Bearing-settlement Characteristics of Extra-long Bored Piles in URT Deep Soft Stratum Underground Station
Objective To effectively control the deformation of station structure during the excavation and usage of deep foundation pit in soft soil stratum, and to increase the bearing capacity of foundation pit bottom, it is nece...
Optimization of Mecca Light Rail Train Organization during Peak Hours Based on Virtual Formation Technology
Objective With the annual increase of pilgrim flow in Mecca, the throughput capacity of Makkah Metro Pink Line (simplified as Mecca light rail) operation plan during peak hours is saturated. Therefore, it is aimed to exp...
Research on Signaling System of City (Suburban) Railway Cross-line Operation to Intercity Railway
Objective City (suburban) railways are a weak link in the four-network integrated development of rail transit system in China. There is currently no unified understanding regarding their functional positioning and passen...