Methods and apparatus for very close following train movement
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United States of America Patent
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Jun 17, 2003
Grant Date -
N/A
app pub date -
Dec 29, 2000
filing date -
Dec 30, 1999
priority date (Note) -
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Abstract
A method for increasing efficiency of operation of trains includes operating a plurality of trains as a moving sequence and regulating distances between the trains to eliminate distances in excess of safe minimum distances between the trains. Distance between a preceding train and a following train is regulated by varying speed of the following train to minimize an excess distance between the two trains. A safe minimum distance includes a safe braking distance for the following train. In a further embodiment the safe braking distance is determined based on train weight distribution. Distributed weight is determined using measurements of train position, speed, acceleration and tractive effort to estimate forces affecting the train. The forces are related to one another to obtain a matrix equation expressing the forces in terms of car weight and train weight. The equation is solved to determine car weight and train weight.
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