Patent ID: 6535124
Filing Date: 2003-03-18
Classification: F02C,F23N

Abstract:
A method for analyzing and conditioning the analog pulsation signal derived from combustion of fuel in a turbine, said method comprising the steps of:(a) converting said analog pulsation signal to a digital signal; (b) digitally filtering said digital signal; (c) providing from said digitally filtered digital signal a digital value which is the true RMS value of a user defined predetermined frequency band of said analog pulsation signal; (d) determining if an alarm output is on; (e) determining when an alarm output is not on if said digital true RMS value is greater than a predetermined alarm limit; (f) incrementing an alarm timer when said digital true RMS value is greater than said predetermined alarm limit; and (g) outputting an alarm when said count in said alarm timer is greater than a predetermined accumulated time.