Motion planning for elevator cars moving independently in one elevator shaft
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United States of America Patent
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Apr 23, 2013
Grant Date -
May 17, 2012
app pub date -
Nov 17, 2010
filing date -
Nov 17, 2010
priority date (Note) -
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status (Latency Note)
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Abstract
A motion of a first car and a second car in a multi-car elevator system, wherein the first car and the second car move independently in an elevator shaft, is controlled by generating a command to move the first car according to a first deceleration curve, if a relationship between a position and a velocity of the first car corresponds to a value on the first deceleration curve; and by generating a command to move the second car according to a second deceleration curve, if a relationship between position and a velocity of the second car corresponds to a value on the second deceleration curve, wherein a distance between the first and the second deceleration curve is equals or greater than a minimum distance.
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