Method and apparatus for synchronizing a vehicle lift
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United States of America Patent
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Jul 20, 2004
Grant Date -
Oct 16, 2003
app pub date -
Apr 12, 2002
filing date -
Apr 12, 2002
priority date (Note) -
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Abstract
A vehicle lift control maintains multiple points of a lift system within the same horizontal plane during vertical movement of the lift engagement structure by synchronizing the movement thereof. A vertical trajectory is compared to actual positions to generate a raise signal. A position synchronization circuit synchronizes the vertical actuation of the moveable lift components by determining a proportional-integral error signal.
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