نتایج جستجو برای: automatic train control

تعداد نتایج: 1488171  

Journal: :Annals OR 2000
Phil Howlett

We consider the problem of determining an optimal driving strategy in a train control problem with a generalised equation of motion. We assume that the journey must be completed within a given time and seek a strategy that minimises fuel consumption. On the one hand we consider the case where continuous control can be used and on the other hand we consider the case where only discrete control i...

Journal: :CASM 2016
Umar Khan Niazi Jamil Ahmad Tariq Saeed Sikandar Hayat Mirza

Purpose: Recent advancements in technology have enabled railway organizations to shift from manual to computer based automated interlocking systems for increasing their efficiency and profits. Since automated systems are complex and interlocking systems are safety critical systems, these systems should be modeled and verified against safety requirements to weed out any design bugs which might l...

Journal: :Eng. Appl. of AI 2014
William Carvajal-Carreño Asunción Paloma Cucala García Antonio Fernández-Cardador

One of the main priorities for metro line operators is the reduction of energy consumption, due to the environmental impact and economic cost. The new moving block signalling system CBTC (Communication Based Train Control) is being installed in order to increase the transport capacity of new metro lines, and to upgrade lines equipped with the former fixed block signalling systems. In addition, ...

2003
Mika Koganeyama Sayuri Sawa Hayaru Shouno Toshiyasu Nagao Kazuki Joe

Irregular changes of electric currents called Seismic Electric Signals (SESs) are often observed in Telluric Current Data (TCD). Recently, detection of SESs in TCD has attracted notice for shortterm earthquake prediction. Since most of the TCD collected in Japan is affected by train noise, detecting SESs in TCD itself is an extremely arduous job. The goal of our research is automatic separation...

Journal: :Accident; analysis and prevention 2010
Xuedong Yan Stephen Richards Xiaogang Su

This paper applies a nonparametric statistical method, hierarchical tree-based regression (HTBR), to explore train-vehicle crash prediction and analysis at passive highway-rail grade crossings. Using the Federal Railroad Administration (FRA) database, the research focuses on 27 years of train-vehicle accident history in the United States from 1980 through 2006. A cross-sectional statistical ana...

2012
Sandrine Brognaux Sophie Roekhaut Thomas Drugman Richard Beaufort

Several automatic phonetic alignment tools have been proposed in the literature. They usually rely on pre-trained speaker-independent models to align new corpora. Their drawback is that they cover a very limited number of languages and might not perform properly for different speaking styles. This paper presents a new tool for automatic phonetic alignment available online. Its specificity is th...

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