GAS-TURBINE ENGINE CONTROL METHOD Russian patent published in 2008 - IPC F02C9/00 

FIELD: mechanical engineering; gas-turbine engines.

SUBSTANCE: invention relates to automatic control of gas-turbine engines. According to invention, in case of failure of one of air parameters sensors at engine input, "virtual" measurement of signal of failed sensor is carried out. For this purposed, functional relationship between pressure in engine and speed of rotation is formed in reduced coordinates. For reduction, use is made of relations: to reduce pressure - ratio P_r=1.033 P/P₁ where P_r is reduced engine pressure, P is pressure at engine input, P₁ is air pressure and at to reduced speed of rotation, ratio where n_r is reduced value of speed of rotation, n is speed and T₁ is air temperature at input. In process of "virtual" measurement of signal of failed sensor, first reduced value of one of said parameters is determined by signal of operating air sensor at engine input, value of other reduced parameter corresponding to said value is determined from functional relation ship and this value is introduced into other relationship and then value of signal of failed sensor is calculated basing on said relationship and said calculated value is introduced into automatic control system to form preset values of controlled parameters.

EFFECT: restoration of information from failed temperature or pressure sensors at engine input to improved reliability of operation of gas-turbine engine.

4 cl, 1 dwg