Patent Document ID: 6119446
Application ID: 09187753
Patent Flag: 1

Claim One:
1. A method for controlling a gas turbine having a gas turbine engine, a fuel pump for supplying fuel to the gas turbine engine, a fuel valve, and a motor for driving the fuel pump, in which driving of said motor or said fuel valve as a subject of control is controlled, the method comprising the steps of: (A) obtaining the difference between a target torque set by a user and an actual torque of the gas turbine engine; (B) obtaining a fuzzy control value by executing a fuzzy control algorithm in which the torque difference and a time differential value of the torque difference are set as input variables; (C) obtaining a proportional-differential control value by multiplying the fuzzy control value by a gain set through a simulation in which the fuzzy control value approximates to the proportional-differential control value from the torque difference; (D) obtaining an integral control value from the torque difference; (E) obtaining a proportional-integral-differential control value according to the proportional-differential control value and the integral control value obtained from said steps (C) and (D), respectively; (F) controlling driving of said subject of control according to the proportional-integral-differential control value; and (G) repeating said steps (A) through (F).