| 摘要 |
<P>PROBLEM TO BE SOLVED: To control a main engine to make a propeller vector constant, to restrain a thrust from being fluctuated, and to enhance a propulsion efficiency. <P>SOLUTION: An actual rotational speed Ne of the main engine 11 is detected to be input to a time-delay logic 13 and a period calculation part 15. A fluctuation period of the actual rotational speed Ne is detected in the period calculation part 15, and the actual rotational speed Ne is delayed by 1/4 period in the time-delay logic 13, to be negatively fed back. A deviation between a target rotational speed No and a feedback signal is input into a proportional control part 14, and a proportional operation is conducted at a gain corresponding to a fluctuation angular velocity ω of the actual rotational speed Ne calculated based on the period found in the period calculation part 15. A fuel index FIo corresponding to the target rotational speed No is calculated in an N/FI conversion part 12, to be added to an output from the proportional control part 14. <P>COPYRIGHT: (C)2013,JPO&INPIT |
