Method for controlling gas turbine using fuzzy logic

Power plants – Combustion products used as motive fluid

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60 39282, F02C 928

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active

061194468

ABSTRACT:
In a control of 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, the motor or the fuel valve as a subject of control is controlled. (A) The difference between a target torque set by a user and an actual torque of the gas turbine engine is obtained. (B) A fuzzy control value is obtained 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) A proportional-differential control value is obtained 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) An integral control value is obtained from the torque difference. (E) A proportional-integral-differential control value is obtained by adding the proportional-differential control value and the integral control value obtained from the steps (C) and (D), respectively. (F) Driving of the subject of control is controlled according to the proportional-integral-differential control value. (G) The steps (A) through (F) are repeated.

REFERENCES:
patent: 4693077 (1987-09-01), Skarvan et al.
patent: 5449495 (1995-09-01), Goto
patent: 5718111 (1998-02-01), Ling et al.
patent: 5806052 (1998-09-01), Bonissone et al.

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