Motor drive velocity modulation for use in reciprocating pump, involves starting timer and detecting overflow, to increment lookup table and motor driving speed, to enable constant pressure and flow of liquid

摘要

A lookup table with steps and time increments is obtained, based on desired rate of liquid dispensing by pump (512), using which the timer (514) is set. The timer is started based on table and on detecting overflow condition, the lookup table and motor driving speed is incremented by one step, and the lookup table and timer are again updated, for setting constant pressure and flow of liquid from pump. An Independent claim is also included for motor drive velocity modulating system.