Patent ID: 8285468
Filing Date: 2012-10-09
Classification: F02C,F05D,F23N,F23R,G05B,Y02T,Y10T

Abstract:
1. A method for controlling a gas turbine engine, the engine comprising multiple cans, the method comprising: obtaining operating frequency information associated with multiple cans of the engine; determining, during startup operation of the engine, whether the operating frequency information for each particular can exceeds at least one startup operating threshold for a predefined time; and implementing at least one startup engine control action to modify operation of the particular can when the at least one operating threshold is exceeded; determining, during steady state operation of the gas turbine engine, the variation between operating frequency information of at least two cans based at least in part on the operating frequency information; determining a median value based at least in part on the variation; determining whether the median value or the operating frequency information for a particular can exceeds at least one steady state operating threshold for another predefined time; and implementing at least one engine steady state control action to modify operation of either the gas turbine engine or the particular can when the at least one steady state operating threshold is exceeded for the other predefined time, wherein the above elements are performed by at least one computer processor.