Patent ID: 7897196
Filing Date: 2011-03-01
Classification: F04B,Y10T

Abstract:
1. A method for compensating for errors in dispense volumes of a dispense system comprising: a pump controller determining a dispense volume amount based on a dispense recipe, wherein the pump controller is operable to control operation of a dispense pump, wherein the dispense system comprises the pump controller, the dispense pump, and one or more tubes downstream of the dispense pump; the pump controller determining a value for a fluid property based on the dispense recipe; the pump controller determining a correlation between the error volume of the dispense pump and the one or more tubes and the fluid property, wherein the correlation accounts for compliance in the dispense pump and the one or more tubes; the pump controller determining an error volume amount based on the value of the fluid property and the correlation; and the pump controller controlling a dispense motor to move a piston in the dispense pump to a position to account for the dispense volume amount determined from the recipe and the error volume amount to dispense the dispense volume amount of fluid from a nozzle.