Nutating pump, control system and method of control thereof

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 flu...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	HOGAN TIM, AMSLER THOMAS J, CLEVELAND JAMES R
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING HEATING LIGHTING MEASURING MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL MECHANICAL ENGINEERING METERING BY VOLUME MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS PUMPS FOR LIQUIDS OR ELASTIC FLUIDS TESTING TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	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.