HYDRAULIC DRIVE UNIT AND METHOD OF OPERATING
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United States of America Patent
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Jul 27, 2017
app pub date -
Jan 25, 2017
filing date -
Jan 26, 2016
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Abstract
A hydraulic drive unit for a shaping machine comprising a pump driven by a motor, a closed-loop or open-loop control unit for closed-loop and/or open-loop control of the drive unit to a reference operating point of the drive unit, and a memory connected to the closed-loop or open-loop control unit, wherein a relationship between a parameter characteristic of a sound directly or indirectly caused by the drive unit and a data set representing various operating points of the drive unit is stored in the memory and the closed-loop or open-loop control unit is adapted to select the reference operating point on the basis of the relationship.
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