Patent ID: 9722519
Date: 2017-08-01
CPC Classifications: F04B,G01N,H02P

Claim:
1. A method for operating a stepper motor coupled to a reciprocating plunger mechanism of a fluidic pumping system during a fluid intake cycle to pump fluid into the pumping system, comprising: measuring available torque of the stepper motor across a range of motor velocities within which the stepper motor will operate during the fluid intake cycle; calculating a maximum acceleration rate for each of a plurality of motor velocities in the range of motor velocities based on the available torque of the stepper motor measured at that motor velocity; generating a fluid intake velocity profile based on the maximum acceleration rates calculated for the plurality of motor velocities; and accelerating the stepper motor during the fluid intake cycle in accordance with the generated fluid intake velocity profile to move the reciprocating plunger mechanism to pump fluid into the pumping system.