Method and apparatus for controlling a brake valve based on sensed conditions and a model of the braking system
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United States of America Patent
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-
Apr 11, 1995
Grant Date -
N/A
app pub date -
Oct 26, 1992
filing date -
Apr 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The electronic brake control simulates by electronic means various real changes over time of the pneumatic pressures in a braking system, in particular the pressure in the main air pipe of the train, the pressure in the R containers of the individual wagons and the pressure in the individual brake cylinders. When the brakes are released, the values are determined from these model values and the actually backfed air volume, from which values the pilot control pressure for a relay valve can be increased in order to release the brakes more rapidly. The train model determines, by an adaptive learning method at the end of a brake releasing process, values for the volume of the main air pipe and the R containers of the train, so that the train model adapts itself to the actually existing train.
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