Rotation control device for working machine
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United States of America Patent
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Aug 5, 2014
Grant Date -
Apr 3, 2008
app pub date -
Sep 26, 2007
filing date -
Sep 29, 2006
priority date (Note) -
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Abstract
In a rotation control device for rotating a rotation motor at speed in accordance with a boom raising operation amount, at the time of a combined operation for simultaneously performing a rotation action and a boom raising action, a limitation value of rotation torque in accordance with the boom raising operation amount is determined by rotation torque limitation value setting means of a controller, the limitation value serving as a rotation torque limitation value is sent to rotation speed control means, and a command value of the rotation torque is torque-limited by rotation torque limiting means.
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