Flow rate accuracy of a fluidic delivery system
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United States of America Patent
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Jun 3, 2014
Grant Date -
Jun 14, 2012
app pub date -
Feb 18, 2012
filing date -
Oct 26, 2005
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Abstract
Improving the accuracy of the flow rate of a valve in a fluidic delivery device in which a desired flow rate may be achieved by varying the duty cycle of the valve. The flow rate of fluid delivery from the valve over its lifetime is stabilized by minimizing the voltage OPENING time of the valve to account for valve and piezoelectric actuator drift. Also, the valve OPENING time of one or more fluidic parameters that impact on the flow rate delivery by the valve and differ among fluidic delivery devices is compensated to optimize the flow rate accuracy.
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