Results 211 to 220 of about 1,420,588 (250)

A Reinforcement Learning-Based Pantograph Control Strategy for Improving Current Collection Quality in High-Speed Railways

IEEE Transactions on Neural Networks and Learning Systems
In high-speed railways, the pantograph-catenary system (PCS) is a critical subsystem of the train power supply system. In particular, when the double-PCS (DPCS) is in operation, the passing of the leading pantograph (LP) causes the contact force of the trailing pantograph (TP) to fluctuate violently, affecting the power collection quality of the ...
Hui Wang, Zhiwei Han, Wenqiang Liu, Yanbo Wu   +3 more
openaire   +2 more sources

Analysis of the Major Design Parameters of a Pantograph-Railway Catenary System for Improving the Current Collection Quality

Journal of the Korean society for railway, 2014
열차는 전기, 디젤 및 가스터빈의 3가지 종류의 동력방식 을 사용하고 있다. 전기방식은 타 방식에 비하여 가·감속 능력이 뛰어나고 환경친화적인 장점을 가지고 있으므로 한 국형 고속열차와 틸팅열차는 전기 동력방식을 택하고 있다. 고속으로 주행하는 열차의 지붕에 탑재된 팬터그래프(Pantograph)는 전차선(Contact wire)과 미끄럼 접촉을 통하여 열 차 구동에 필요한 전기 에너지를 공급 받는다. 열차는 전기, 디젤 및 가스터빈의 3가지 종류의 동력방식을 사용하고 있 다.
openaire   +1 more source

Interactions between the quality of pantograph current collection and the codified current signalling

2008
In-line tests carried out on the Italian train called “Minuetto” showed that when two pantographs are used in order to run two coupled trains, the second pantograph suffers disturbances caused on the catenary by the passage of the first pantograph, which deteriorates the quality of current collection and causes interferences with the codified current ...
Fedeli E., MANIGRASSO, RENATO, BUCCA, GIUSEPPE, COLLINA, ANDREA   +3 more
openaire   +1 more source

Innovative methods for evaluating the quality of the current collection

2001
A crucial problem for Railway Companies is to prevent damages to overhead line equipment and to pantographs: such problem is critical at high speed and a monitoring system has to be set up to plan maintenance activities. In this paper a synopsis of innovative methods for detecting the occurrence of break arcs between the pantograph and the overhead ...
BALESTRINO, ALDO, Bruno O, LANDI, ALBERTO, SANI, LUCA, Papi M, Violi AG   +5 more
openaire   +1 more source

Quality assurance and data collection: current status, problems, and pitfalls.

Journal (American Medical Record Association), 1989
1. It is important to measure and improve quality of care, particularly in this era of cost consciousness. 2. It is difficult to measure quality of care. 3. Current data collection systems have many inconsistencies and errors. 4. Statistical analysis cannot correct bad data. 5. Data based solely on DRG analysis are highly suspect. 6.
openaire   +1 more source

Assessment of current collection quality of ETR1000-V300 Zefiro pantograph: an innovative measurement set-up and test results

2016
The standard EN50317 provides the guidelines for on board measurements of the dynamic interaction between pantograph and overhead line. The quality of current collection system and its safe operation is typically evaluated by measuring the total contact force, which is obtained as the sum of the forces acting between each collector and its suspension ...
BUCCA, GIUSEPPE, CARNEVALE, MARCO, COMOLLI, LORENZO, FACCHINETTI, ALAN, Cavaliere, Franco, Pancari, Giuseppe, Brughera, Fabrizio, Noviello, Giuseppe   +7 more
openaire   +1 more source

Crosswind Effects on Current Collection Quality of Railway Pantograph–Catenary: A Case Study in Chengdu–Chongqing Passenger Special Line

IEEE Transactions on Instrumentation and Measurement, 2022
Yang Song, Fuchuan Duan, Shibin Gao, Fanping Wu, Zhigang Liu   +4 more
openaire   +1 more source

Quality assurance in birth care – Perinatal data collection. Current state and future prospects

Der Gynäkologe, 2000
K. Goerke, N. Lack
openaire   +1 more source

Optimisation of current collection quality of high-speed pantograph-catenary system using the combination of artificial neural network and genetic algorithm

Vehicle System Dynamics, 2022
Kaixin Su, Jiawei Zhang, Jiwang Zhang, Tao Yan, Guiming Mei   +4 more
openaire   +1 more source

C602 QUALITY OF CURRENT COLLECTION AND LIFT CHARACTERISTIC OF PANTOGRAPH IN CONVENTIONAL LINES

The Proceedings of International Symposium on Seed-up and Service Technology for Railway and Maglev Systems : STECH, 2003
Akira Fujishima, Kazuo Takeuchi, Yoshiaki Ueda, Jun Ishii, Yoshihiro Yamamoto   +4 more
openaire   +1 more source