Patent ID: 6565064
Filing Date: 2003-05-20
Classification: G05B

Abstract:
A control for positioning a pintle of a solenoid actuated valve in accordance with a commanded position, comprising the steps of:measuring valve characterizing data including pintle force, valve position and solenoid current; forming a table of solenoid current in terms of valve position and pintle force using the measured valve characterizing data; during operation of the valve, modeling a steady state force required to hold the pintle at the commanded position; addressing the table based on the modeled steady state force and the commanded position to form a feed-forward solenoid current command for the valve; measuring an actual position of the pintle and determining a feedback solenoid current command for the valve based on a deviation of the actual position from the commanded position; and supplying a solenoid current to the valve according to a summation of said feed-forward and feedback solenoid current commands.