Method and apparatus for compensated temperature prediction

A method and apparatus are disclosed for providing a corrected temperature signal indicative of an actual temperature to be measured. In an exemplary embodiment for a gas turbine engine including a rotor having a plurality of blades for channeling a fluid, a first temperature sensor disposed downstream from the rotor blades for proving a measured temperature signal indicative of temperature of the fluid, and a speed sensor operatively joined to the rotor for providing a speed signal indicative of rotational speed of the rotor, a temperature prediction control system is provided. The control system includes means for modeling the rotor for providing a simulated first temperature signal indicative of temperature of the fluid at the first temperature sensor due to work between the fluid and the rotor blades upon rotation of the rotor at the rotor speed. Means for modeling the sensor for providing a predicted temperature signal indicative of measured temperature of the fluid at the first temperature sensor are provided for adding a simulated error to the simulated first temperature signal. The control system also includes biasing means for providing a bias signal upstream of the predicted temperature signal proportional to a feedback error signal representing the difference between the measured temperature signal and the predicted temperature signal to reduce error therebetween.