System and a method for velocity modulation for pulseless operat

Details System and a method for velocity modulation for pulseless operat System and a method for velocity modulation for pulseless operat

1998-04-13

2000-08-29

Thorpe, Timothy S.

Pumps

Condition responsive control of pump drive motor

Having ambient condition responsive means

417 12, 417 42, 417326, F04B 4900

Patent

active

061098787

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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