&lt;b&gt;Hybrid Simulation Testing of a Pantograph-Catenary System Using a Dynamically Substructured System Framework and a MDOF Catenary Model&lt;/b&gt;

Kobayashi, Shigeyuki; Yamashita, Yoshitaka; Usuda, Takayuki; Stoten, David P

doi:10.2219/rtriqr.61.2_127

Cited by 7 publications

(4 citation statements)

References 2 publications

(7 reference statements)

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“…The current collection system HS is an efficient technique that enables a stationary virtual running test of a pantograph by combining a pantograph vibration test and real-time simulation of overhead wire motion. In the past, RTRI developed a current collection system HS (henceforth, referred to as "high-frequency compatible HS") that used a vibrator with relatively high frequency response characteristics (henceforth, referred to as "vibrator") [4]. As shown in Fig.…”

Section: Current Collection System Hybrid Simulation Using a Highspee...mentioning

confidence: 99%

<b>Recent Research on Railway-specific Dynamic Issues</b>

Uehan

2023

QR of RTRI

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Railway system is composed of many sub-systems such as overhead contact lines, vehicles, tracks and structures, which interact with each other and show complex dynamic behaviors. We are working on the elucidation of and countermeasures for railway-specific phenomena caused by the interaction of sub-systems, such as damage due to natural disasters, train running safety, and deterioration of structures, using our own simulation and experiment/measurement technologies. This report introduces examples of recent research in the field of railway dynamics, related to improvement of resilience against natural disasters, digitalization of structure maintenance, hybridization of OCL/pantograph simulation, and weight reduction of train car bodies.

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Section: Current Collection System Hybrid Simulation Using a Highspee...mentioning

confidence: 99%

<b>Recent Research on Railway-specific Dynamic Issues</b>

Uehan

2023

QR of RTRI

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“…The working principles are very similar to the test bench by MTS, but this device can achieve higher speeds in rotation and up to 1 kA of current. These authors are currently developing a dynamically substructured test bench to perform closed-loop CPI testing [ 18 , 19 ]. This test bench uses an outer-loop substructured controller to minimize the difference between the predicted and measured contact points.…”

Section: Introductionmentioning

confidence: 99%

Hardware-in-the-Loop Test Bench for Simulation of Catenary–Pantograph Interaction (CPI) with Linear Camera Measurement

Correcher

Ricolfe-Viala

Tur

et al. 2023

Sensors

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Catenary–pantograph contact force is generally used for assessment of the current collection quality. A good current collection quality not only increases catenary lifetime but also keeps a stable electric supply and helps to avoid accidents. Low contact forces lead to electric arcs that degrade the catenary, and high contact forces generate excessive wear on the sliding surfaces. Railway track operators require track tests to ensure that catenary–pantograph force remains between safe values. However, a direct measure of the contact force requires an instrumented pantograph which is generally costly and complicated. This paper presents a test bench that allows testing virtual catenaries over real pantographs. Therefore, the contact point force behavior can be tested before the track test to guarantee that the test is passed. Moreover, due to its flexibility, the system can be used for model identification and validation, catenary testing, or contact loss simulation. The test bench also explores using computer vision as an additional sensor for each application. Results show that the system has high precision and flexibility in the available tests.

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“…The results obtained were compared with simulations but were seen to be significantly inaccurate. In [14], the DSS strategy was then tested with a real pantograph and the accuracy of the results was challenged. According to this terminology, the work conducted in [7] could be described as DSS, since they also developed a control algorithm based on the energy equation to limit the error in the controlled position of the catenary to avoid the instability produced by delays.…”

Section: Introductionmentioning

confidence: 99%

Hardware-in-the-loop simulations of a railway pantograph with a finite element periodic catenary model

Gil

Tur

Gregori

et al. 2023

Vehicle System Dynamics

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The pantograph-catenary dynamic interaction problem is addressed by Hardwarein-the-Loop (HIL) tests to simulate the dynamic interaction between a numerical model (the catenary) and a physical device (the pantograph). The real-time simulation requires a computationally efficient numerical model and an on time and accurate transference of the response to the pantograph, for which a Periodic Finite Element Model (PFEM) of the catenary is considered. Firstly because of the acceptable computation time required to solve it, makes it suitable for real-time simulations and, secondly, its ability to allow for the delay caused by the transfer of the numerical model response.The catenary PFEM we used considers the non-linear behaviour of the dropper slackening, leading to highly accurate HIL test results, which were validated up to a frequency of 25 Hz.

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<b>Hybrid Simulation Testing of a Pantograph-Catenary System Using a Dynamically Substructured System Framework and a MDOF Catenary Model</b>

Cited by 7 publications

References 2 publications

<b>Recent Research on Railway-specific Dynamic Issues</b>

<b>Recent Research on Railway-specific Dynamic Issues</b>

Hardware-in-the-Loop Test Bench for Simulation of Catenary–Pantograph Interaction (CPI) with Linear Camera Measurement

Hardware-in-the-loop simulations of a railway pantograph with a finite element periodic catenary model

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