Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit最新文献_第2页

Non-contact detection method for pantograph-catenary contact force based on image processing 基于图像处理的受电弓与轨道接触力非接触式检测方法

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Pub Date : 2024-02-07 DOI: 10.1177/09544097241230358

Hong-ming Chen, Zhou Ning, Cheng Yao, Wei-hua Zhang

{"title":"Non-contact detection method for pantograph-catenary contact force based on image processing","authors":"Hong-ming Chen, Zhou Ning, Cheng Yao, Wei-hua Zhang","doi":"10.1177/09544097241230358","DOIUrl":"https://doi.org/10.1177/09544097241230358","url":null,"abstract":"This paper introduces a non-contact method for detecting contact force between pantograph and catenary (PAC), based on image processing and Kalman filter. A non-contact method for detecting contact force of PAC, which only utilizes the vertical displacement of the collector head, is proposed. First, the images of the collector head area are collected by adding an image acquisition system on the roof of the vehicle. Second, combined with target tracking and template matching, the vertical displacement of the pantograph’s collector head is identified. Finally, based on the Kalman filter considering least squares method and the PAC dynamics model, a method for detecting contact force is constructed. The estimation of the PAC’s dynamic contact force is realized only by using the vertical displacement of the collector head obtained from the image identification. The results of simulation and test-bed results show that the Kalman filter considering least squares significantly has higher accuracy and better robustness compared with the traditional Kalman filter.","PeriodicalId":515695,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit","volume":"29 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139795352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterisation of track buckling resistance 轨道抗弯曲特性

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Pub Date : 2024-02-05 DOI: 10.1177/09544097241231884

E. Kabo, A. Ekberg

引用次数: 0

Characterisation of track buckling resistance 轨道抗弯曲特性

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Pub Date : 2024-02-05 DOI: 10.1177/09544097241231884

E. Kabo, A. Ekberg

引用次数: 0

Automated rerailing of a road-rail shunting vehicle on road-level tracks using 2D-Lidar 利用二维激光雷达实现路轨调车在路面轨道上的自动换轨

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Pub Date : 2024-01-23 DOI: 10.1177/09544097241229334

Hyun-Suk Jung, Philipp Niermeyer, Harish Manjunatheswaran, Christian Schindler

{"title":"Automated rerailing of a road-rail shunting vehicle on road-level tracks using 2D-Lidar","authors":"Hyun-Suk Jung, Philipp Niermeyer, Harish Manjunatheswaran, Christian Schindler","doi":"10.1177/09544097241229334","DOIUrl":"https://doi.org/10.1177/09544097241229334","url":null,"abstract":"Road-rail vehicles are emerging increasingly in small flat yards for shunting wagons. While numerous research works suggest automation of the shunting operation to improve its efficiency, the rerailing procedure of such vehicle, i.e., switching between road and rail mode, remains manually executed. Hence, we present a simple but novel method for a road-rail vehicle with skid-steer drive to rerail automatically on road-level tracks (e.g., level-crossing). The vehicle uses two 2D-Lidar sensors to scan the floor for (rail) in order to estimate its lateral displacement and angular orientation towards the track centre. A simplified model and a PID-type controller for the yaw rate were deployed while keeping the linear velocity constant for the vehicle to align itself at the centre of and parallel to the track. Upon reaching the goal, the rail wheels are descended and the rerailing is completed. Test runs were conducted from a random initial pose near the track centre while limiting the travel range in x-direction to 2.5 m, yet allowing a change of direction each time the vehicle reaches this limit. In 97% of the test runs, the vehicle rerailed successfully in 47 s on average (12 s of which was needed for lowering the rail wheels) with three changes of direction or less. In the remaining 3% of cases it took more attempts. Automated rerailing could be used not only as assistance function for the shunting personnel, but also as important feature of an autonomous shunting robot that is able to access both road and rail domains.","PeriodicalId":515695,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit","volume":"54 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139603310","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influence of thermal loading parameters and microstructure on the formation of stratified surface layers on railway wheels 热加载参数和微观结构对铁路车轮分层表层形成的影响

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Pub Date : 2024-01-23 DOI: 10.1177/09544097241229121

M. Freisinger, K. Pichelbauer, G. Trummer, K. Six

引用次数: 0

Impact of coupled effects of airtight components at variable cross-section location on vehicle airtightness in Wuhan metro 武汉地铁不同截面位置气密部件的耦合效应对车辆气密性的影响

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Pub Date : 2024-01-23 DOI: 10.1177/09544097241229120

Yang Li, You-mei Liu

{"title":"Impact of coupled effects of airtight components at variable cross-section location on vehicle airtightness in Wuhan metro","authors":"Yang Li, You-mei Liu","doi":"10.1177/09544097241229120","DOIUrl":"https://doi.org/10.1177/09544097241229120","url":null,"abstract":"To determine the variation in airtightness performance of metro trains under the coupling state of airtight components, a field-based experimental approach was employed to test the air pressure changes during metro train operations. The study analyzed the impact of the coupling effects of the air conditioning pressure wave protection valve, pneumatic auxiliary door lock devices, and passageway drainage plug on the interior pressure changes of the train while operating in challenging environmental conditions. Following industry standards, the assessment evaluated whether the rate of interior pressure change and the train’s dynamic sealing index met the specified requirements. The findings indicate that, with airtight components in an enabled state, the peak-to-peak value of interior pressure change relative to external pressure change decreased by 15% to 39%. Conversely, when airtight components were not enabled, the reduction was only 0% to 25%. Under enabled airtight component conditions, the train’s dynamic sealing index was within the 2-3 s range, whereas in the disabled state, the dynamic sealing index was less than 1 s. The activation of airtight components plays a crucial role in improving train airtightness by significantly reducing the amplitude of interior pressure changes, thereby ensuring both train airtightness and passenger comfort. The results provide valuable insights for the optimization of train design and operation in order to maintain passenger safety and comfort.","PeriodicalId":515695,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit","volume":"135 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139604592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A real-time automatic rail extraction algorithm for low-density mobile laser scanning data 低密度移动激光扫描数据的实时自动轨道提取算法

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Pub Date : 2024-01-22 DOI: 10.1177/09544097241228888

Zhihao Hu, Xiaoci Huang

{"title":"A real-time automatic rail extraction algorithm for low-density mobile laser scanning data","authors":"Zhihao Hu, Xiaoci Huang","doi":"10.1177/09544097241228888","DOIUrl":"https://doi.org/10.1177/09544097241228888","url":null,"abstract":"Automatic detection of railroad infrastructure using Mobile Laser Scanning systems is a key technology for both advanced rail driver assistance and intelligent track maintenance. The recent research into railway facility extraction or condition monitoring usually relies on high-density point cloud dataset with known sensor parameters but ignores the processing performance in actual deployment and has high requirements for the acquisition device. To address these limitations, a novel rail extraction algorithm is proposed for processing Mobile Laser Scanning data in real time during acquisition, which could extract rail features by a hierarchical coarse-to-fine method with basic structural parameters. Using the geometric and global statistical characteristics of rail in raw data, a new rail descriptor is defined based on the quantitative statistics of points satisfying height difference in generalized local neighborhood. The approach is evaluated experimentally by a simulated real-time acquisition data and compared with a reference method. The experimental results show that the proposed algorithm has a finer extraction effect and good real-time performance.","PeriodicalId":515695,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit","volume":"35 32","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139607748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of debonding between layers of ballastless turnouts on the vibration characteristics of the wheel-rail system 无砟道岔层间脱粘对轮轨系统振动特性的影响

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Pub Date : 2024-01-22 DOI: 10.1177/09544097241228326

Shuxiao Li, Zhiheng Li, Zheng Yan, Ping Wang, Jing-mang Xu

{"title":"Impact of debonding between layers of ballastless turnouts on the vibration characteristics of the wheel-rail system","authors":"Shuxiao Li, Zhiheng Li, Zheng Yan, Ping Wang, Jing-mang Xu","doi":"10.1177/09544097241228326","DOIUrl":"https://doi.org/10.1177/09544097241228326","url":null,"abstract":"The mortar layer of the slab ballastless turnout is the weakest connecting part compared to the rest of the structure, meaning debonding between the turnout slab and the mortar layer is prone to occur under the dynamic load of a train. In order to study the impact of debonding on the vibration response of the wheel-rail system in the turnout area, a rigid-flexible vehicle-turnout coupled dynamic model that takes debonding into account was established based on the theory of vehicle-track coupled dynamics; the flexible deformation of the multi-rail and turnout slab was also included in the model. The impact of debonding on the wheel load transition and the vibration acceleration of the turnout structure and axle box were then analysed. The results show that: There are significant differences in the impact of different types of debonding on the vibration response of the vehicle-track coupled system. When the debonding height is less than the voiding limit, the impact of the debonding height is significant, while the vibration acceleration of the vehicle-turnout system remains basically unchanged once debonding height reaches the void limit.","PeriodicalId":515695,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit","volume":"20 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139609156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Development of track component health indices using image-based railway track inspection data 利用基于图像的铁路轨道检测数据开发轨道部件健康指数

Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit Pub Date : 2024-01-10 DOI: 10.1177/09544097231224825

Ian Germoglio Barbosa, A. Lima, J. Edwards, M. Dersch

{"title":"Development of track component health indices using image-based railway track inspection data","authors":"Ian Germoglio Barbosa, A. Lima, J. Edwards, M. Dersch","doi":"10.1177/09544097231224825","DOIUrl":"https://doi.org/10.1177/09544097231224825","url":null,"abstract":"The primary role of the US Department of Transportation (USDOT) Federal Railroad Administration (FRA) is ensuring the safe operation of railway rolling stock and infrastructure by way of regulatory oversight. FRA regulations require US railroads to conduct visual track inspections as often as twice per week depending on a specific track segment’s FRA track class, which also governs maximum train operating speed. Such inspections are often subjective due to the inherent limitations of human visual inspection and cognition. Additionally, human visual inspections require some level of risk given the need for inspectors to be on track while also consuming valuable network capacity. As a result, and the desire to collect objective data to improve both safety and maintenance planning, railroads are pursuing new means and methods to assess track condition and evaluate track component health. This paper presents a numerical method to define track component health using field data collected on the High Tonnage Loop (HTL) at the Transportation Technology Center (TTC) in Pueblo, Colorado, USA. Line scan laser and image data of the track were captured using a 3D Laser Triangulation system and were subsequently processed using Deep Convolutional Neural Networks (DCNNs). The track heath quantification method proposed establishes benchmarks that were developed based on the understanding of railway track mechanics, high axle load (HAL) railroad engineering instructions, and FRA regulations. The novel metrics presented are referred to as Track Component Heath Indices (TCHIs) and are quantitative values that objectively assess track condition and provide a means to monitor condition change with time and tonnage. These data can be used in conjunction with traditional track geometry and other forms of track heath data (e.g. GPR and rail profile) to more holistically assess the condition of the track structure and its components and ultimately predict its future state.","PeriodicalId":515695,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit","volume":" 51","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139627726","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0