System and a method for velocity modulation for pulseless operation of a pump
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United States of America Patent
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Aug 29, 2000
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N/A
app pub date -
Apr 13, 1998
filing date -
Apr 13, 1998
priority date (Note) -
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Abstract
A system and a method are provided for velocity modulation to create pulseless delivery of a fluid by a pump, particularly a piston pump. The system and method require input of data, such as a user-entered dispense rate or analog current or voltage input proportional to a desired output rate. A timer or counter is pre-loaded from a lookup table stored in a processor. The time or counter is started and, upon detection of an overflow condition, the motor and table pointer are incremented one step. As a result, pulseless operation of a pump is achieved.
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