Patent ID: 8770912

Claim:
A method for controlling at least one turbine guide vane comprising: receiving a nominal reference guide signal; receiving a deadband signal; generating a reference signal associated with the at least one turbine guide vane, wherein the reference signal is a sum of the nominal reference guide signal and the deadband signal; receiving a measured guide vane actuator position feedback signal; generating an error signal based on a difference between the reference signal and the measured guide vane actuator position feedback signal, wherein the error signal is used at least to improve position accuracy of the at least one turbine guide vane; measuring an actuator position and an angular position associated with the at least one turbine guide vane, wherein the actuator position is based at least in part on the error signal; receiving a measured guide vane angular position feedback signal based at least in part on the angular position; generating an input signal, wherein the input signal is a difference between the measured guide vane actuator position feedback signal and the measured guide vane angular position feedback signal; generating an updated deadband signal based at least in part on the input signal; and manipulating the at least one turbine guide vane based at least in part on the updated deadband signal and the reference signal.