| 摘要 |
PURPOSE:To improve response to a fluctuation in response through simple constitution by integrating a number of revolution difference signal between a set value and a present value for an output turbine shaft and adding number of revolutions signals for a gas generator shaft and an output turbine shaft to an integrating result. CONSTITUTION:When a load D of a biaxial gas turbine A is increased, a number of revolutions present value n2 of an output turbine shaft 5 is decreased. In which case, the detecting signal n2 from a detector 9 to detect the number of revolutions of an output turbine shaft 5 is applied on an adder 10 and compared with an input signal (a) for a number of revolutions set value N. Integration of a fluctuation component equivalent to a number of revolutions difference by an integrating circuit 11, an output signal (e) from a number of revolutions control circuit B is increased and the numbers of revolutions of a gas generator shaft 1 and the output turbine shaft 5 are increased. In this case, a detecting signal from a detector 16 to detect the number of revolutions of the gas generator shaft 1 is applied as a present value n1 of the number of revolutions on a proportional circuit 17, and an output signal (h) therefrom is applied on an adder 13. Namely, a function equivalent to a conventional differentiating circuit is provided for the circuits 16 and 17. |
