Nutating pump, control system and method of control thereof
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United States of America Patent
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-
Jun 15, 2004
Issued Date -
N/A
app pub date -
Jul 30, 2002
filing date -
Sep 20, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A fluid dispense system having a computer control system that operatively controls a stepper motor driving a pump. The stepper motor actuates the pump piston through partial revolutions. The computer control system determines the number of stepper motor steps required to pump a desired amount of fluid by the pump by rotating the piston through segments which are less than a full revolution. Further, the controller varies the speed of the stepper motor to avoid splashing of the dispense fluid and motor stalling.
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