Process for controlling a dosing device for liquid or pasty media; dosing device; and industrial robot
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United States of America Patent
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Jun 28, 2011
Grant Date -
Sep 4, 2008
app pub date -
Mar 17, 2008
filing date -
Sep 19, 2005
priority date (Note) -
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Abstract
A dosing apparatus includes a feed device for a liquid or pasty medium, which supplies the medium at a given preliminary pressure. A pressure control valve communicates with the feed device, a dosing pump is fluidically connected to the pressure control valve, a driving motor that drives the dosing pump, a discharge valve discharges the medium as a volume flow modifiable over time. A control and regulation device feeds a control signal to the pressure control valve in accordance with a predefined setpoint volume flow value. A comparator of the control and regulation device compares the input and output pressure values, and a control unit modifies the control signal fed to the pressure control valve in order to drive the difference between the input and output pressure values to a given value.
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