Method for controlling an electric motor driving a body in translation
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United States of America Patent
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-
Aug 30, 2005
Grant Date -
Feb 12, 2004
app pub date -
Aug 31, 2001
filing date -
Sep 15, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The invention concerns a method for controlling an electric motor driving a body in translation between an initial position and a final position determined by a stop, by powering the motor with reduced voltage in the final position approach phase. The motor has a torque/speed characteristic such that the torque at null speed decreases with the supply voltage. As the approach phase starts, the method consists in determining a reduced voltage by decreasing the rotational speed of the motor from a nominal value to a predetermined reduced value and in cutting the motor power supply if the motor rotational speed drops below a predetermined threshold value.
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