Patent ID: 8919129

Claim:
A method for controlling a gas turbine engine fuel control valve during low flow conditions, the method comprising: modifying a nominal effective flow area versus command data set to a corrected effective flow area versus command data set of the fuel control valve including positioning the fuel control valve in an operating position, determining a flow rate with a flow sensor when the fuel control valve is in the operating position, determining a corrected effective flow area of the fuel control valve in the operating position, generating effective flow area versus command data based on the corrected effective flow area of the fuel control valve and the operating position of the fuel control valve, and inserting the generated effective flow area versus command data into the nominal effective flow area versus command data set when nominal effective flow area versus command data within the nominal effective flow area versus command data set is not known at the operating position; and using the corrected effective flow area versus command data set to position the fuel control valve.