| 摘要 |
FIELD: aircraft gas-turbine, in particular, TURBOPROP engines. SUBSTANCE: rotational speed of the forward and aft propellers of TURBOPROP engine is measured, the measured values are compared with the preset ones, a control signal is produced to change the forward propeller pitch in accordance with the control signal to change the aft propeller pitch a control error of the middle propeller speed and a control signal to change the aft propeller pitch in accordance with the control error of the aft propeller speed. To enhance the accuracy of speed control of the forward and any propellers in steady-state conditions, an adaptive cross coupling between the propeller speed control channels is introduced. The device, implementing the method, has an additional stabilizing unit receiving the signals from the speed comparison units of the forward and aft propellers with preset values, as well as an adder summing up the output signals of the stabilizing unit and second of the above comparison units. The signal from the adder output actuates the aft propeller-pitch control unit. EFFECT: enhanced accuracy. 2 cl, 1 dwg |
