Patent ID: 7826954

Claim:
A system for monitoring an output of a sensor for detecting an operating state of a gas turbine engine by comparing a value of an output of the sensor with a prescribed reference value, comprising: a plurality of calibration maps, each calibration map corresponding to one of a plurality of sensors, and configured to convert the output of the sensor into a variable that can be used to control the engine, the prescribed reference value being defined in the calibration map; a mode detecting unit configured to detect a current operating mode of the engine, and configured to determine the current operating mode from a start, a low load steady-state, an acceleration, a high load steady-state, a deceleration, and emergency fuel cut modes, wherein a countermeasure control mode corresponding to a failure of the sensor is selected for the operation of the engine when the output is determined to be outside a tolerable range; and a reference value determining unit configured to mark the tolerable range of each sensor on the corresponding calibration map and determine whether the output of each sensor is within the tolerable range.