Graph Methods for Solving the Unconstrained and Constrained Optimal Assignment Problem for Locomotives on a Single-Line Railway Section

Zhilyakova, L. Yu.; Kuznetsov, N. A.

doi:10.1134/s0005117921050040

Cited by 2 publications

(1 citation statement)

References 8 publications

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“…(3) parts hierarchy constraints: ① disassembly type process: means that a component will generate a number of different types of sub-parts after disassembly; ② overhaul type process: means that a component or a component belonging to the same body for condition testing, due to the use of failure and does not meet the technical requirements of the parts to be repaired, the same type of parts before and after the process, did not generate new sub-parts or form a new parent component [11][12].…”

Section: Locomotive Parts-level Overhaul Processmentioning

confidence: 99%

Research and application of intelligent traffic system on locomotive overhaul process

He¹

2023

International Conference on Mechatronics Engineering and Artificial Intelligence (MEAI 2022)

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With the rapid development of information technology and the transformation of manufacturing services, the overhaul activities of complex equipment are receiving more and more attention. Locomotives, as an important part of the rail transportation industry, are typical complex technical equipment with a long-life cycle and require multiple overhaul work during the life cycle to ensure safe operation. At the same time, because of the complex structure of locomotive products, high operational reliability requirements, large downtime losses, and many levels of maintenance, simple maintenance processes are not applicable. The Intelligent Transportation System (ITS) can monitor and detect the traffic information parameters in real time, so the ITS is used to troubleshoot locomotives and enable them to operate safely. It can be seen from this study that the application of intelligent transportation system in Locomotive Maintenance (LM) can be used as locomotive maintenance engine and monitor the maintenance process to keep the locomotive running well.

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Section: Locomotive Parts-level Overhaul Processmentioning

confidence: 99%

Research and application of intelligent traffic system on locomotive overhaul process

He¹

2023

International Conference on Mechatronics Engineering and Artificial Intelligence (MEAI 2022)

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Optimization of Simultaneous Delivery and Pickup Wagon Scheme on Hybrid Siding Network of Railway Terminal

Yun

et al. 2022

Discrete Dynamics in Nature and Society

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Aiming at the local freight train transit system in railway terminal, the optimization of simultaneous delivery and pickup wagon scheme on hybrid siding network is presented. The problem is formulated as a mathematical programming model. The objective function intends to minimize shunting engines’ operating cost, wagons’ travelling cost, and penalty cost for exceeding the retrieval time window. Some constraints indicating the relationship between delivery and pickup wagons, relationship between radial branches and operation batches, relationship between local wagon groups’ retrieved time and outbound train departure time, and relationship between tasks and operation batches are considered in the model. As an NP problem, using traditional method to solve the model is difficult and inefficient. A novel two-stage hybrid optimization procedure is proposed. Firstly, the three-phase approach composed of coding task sequence, dividing task batch, and generating access order sequence population is developed to generate initial solution. Secondly, an asynchronous iteration heuristic is provided. The iteration object is given as the expression form of the solution representing the delivery and pickup wagon sequence and then the initial iteration population is generated. Furthermore, the primary updating iteration population with pending and remaining groups is introduced to optimize iteration object Then, the senior updating iteration population with Lévy flight searching is also introduced to optimize further iteration object. Finally, the experimental scenarios are designed to test the proposed approach. Also, the proposed approach is compared with some other approaches and the performance of the proposed approach is evaluated by some different sized instances.

show abstract

Graph Methods for Solving the Unconstrained and Constrained Optimal Assignment Problem for Locomotives on a Single-Line Railway Section

Cited by 2 publications

References 8 publications

Research and application of intelligent traffic system on locomotive overhaul process

Research and application of intelligent traffic system on locomotive overhaul process

Optimization of Simultaneous Delivery and Pickup Wagon Scheme on Hybrid Siding Network of Railway Terminal

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