Apparatus for controlling a drive motor in a weaving machine
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United States of America Patent
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-
Jun 4, 1996
Grant Date -
N/A
app pub date -
Oct 12, 1994
filing date -
Oct 18, 1993
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus and method for actuating a drive member in a weaving machine comprises a drive unit, connected to a power supply network, for controllably rotating the drive member. The drive unit includes a direct-current operated unit selectively operable both as a direct-current motor and as a direct-current generator. A control unit is provided for generating and supplying to the drive unit at least one control signal for substantially continuously controlling the angular velocity of the drive member in each of its revolutions. According to the present method the control signal further selectively controls the drive unit to operate in first modes where the drive unit operates as a direct-current motor and in second modes where the drive unit operates as a direct-current generator. The drive unit is selectively operable over predetermined portions of a cycle of operation to function either as a motor energized by the power supply network or as a direct-current generator to feed energy back to the power supply network.
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