초록 ▼

A torque signal synthesis method is provided to accommodate torque measurements for a gas turbine engine. The torque signal is synthesized from gas pressure sensed at an engine station. The synthesized torque signal may include a correction factor which accounts for the deviation of the engine from

A torque signal synthesis method is provided to accommodate torque measurements for a gas turbine engine. The torque signal is synthesized from gas pressure sensed at an engine station. The synthesized torque signal may include a correction factor which accounts for the deviation of the engine from a nominal characteristic. This correction factor is determined during engine operation and periodically updated to account for changes in the deviation. The synthesized torque signal may further be determined from the corrected speed of a gasifier rotor and power turbine of a free turbine engine configuration.

대표청구항 ▼

[ What is claimed is:] [1.] A method of operating a gas turbine engine having a power turbine, comprising:(a) providing a first signal corresponding to a gas pressure associated with performance of the engine;(b) providing a second signal corresponding to rate of change of rotational speed of the po

[ What is claimed is:] [1.] A method of operating a gas turbine engine having a power turbine, comprising:(a) providing a first signal corresponding to a gas pressure associated with performance of the engine;(b) providing a second signal corresponding to rate of change of rotational speed of the power turbine;(c) providing a third signal corresponding to torque produced by the engine;(d) generating a fourth signal from the first and second signals, the fourth signal corresponding to torque produced by the engine; and(e) using the fourth signal in place of the third signal if the third signal is determined to be unreliable.