Control device and method for a vibratory machine
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United States of America Patent
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Jul 28, 2009
Grant Date -
Sep 8, 2005
app pub date -
Feb 25, 2005
filing date -
Feb 29, 2004
priority date (Note) -
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Abstract
This invention relates to a control unit for an unbalanced mass adjusting device in a vibration generator, in particular in a soil compaction machine, having an adjusting cylinder which is hydraulically adjustable to adjust a relative position of contrarotating unbalanced masses in the vibration generator, having a control valve to adjust the adjusting cylinder so that the vibration behavior of the vibration generator is adjusted and having a control unit for triggering the control valve according to a pulse width modulation signal to adjust the relative position of the unbalanced masses as a function of the pulse duty factor of the pulse width modulation signal.
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