Patent ID: 7530216

Claim:
A control system for a gas turbine engine, comprising: an inlet state sensor for detecting at least one physical value of intake air of the gas turbine engine; an internal temperature sensor for detecting at least one of a turbine inlet temperature and a turbine outlet temperature; a fuel supply valve for supplying fuel to the gas turbine engine at a prescribed flow rate; an engine operation map that gives a target rotational speed in relation to an output from the inlet state sensor and a target output of the gas turbine engine; an engine control unit for controlling the fuel supply valve such that the gas turbine engine produces the target output at the target rotational speed given by the engine operation map; a degradation level estimating unit for estimating a degradation level of the gas turbine engine according to a deviation of an output of the internal temperature sensor when the engine is producing the target output at the target rotational speed from a prescribed reference temperature; and a correction value computing unit for computing a correction value for correcting the engine operation map according to the degradation level of the gas turbine engine estimated by the degradation level estimating unit.