| 摘要 |
PURPOSE:To prevent a delay of control in navigation when a ship approaches a prescribed, course and to prevent the ship from a danger when a course deviation output is suddenly changed, by changing the output slowly when the course deviation is sharply changed and quickly in case of small course deviation. CONSTITUTION:If course deviation voltage suddenly falls to zero when a ship is sharply deviated from a set course, Zener diodes D1, D2 are made conductive eletrically and the charge of a capacitor C charged through a series circuit consisting of the capacitor C and a resistance R2 is gradually turned to zero. Consequently, the safety of the ship is maintained without the sudden change of a rudder. When the ship is not deviated so much from the set course, the Zener diodes D1, D2 are made nonconductive, and the capacitor C is separated from a time constant circuit. Thus, the voltage change of a course deviation operating circuit 10 is applied to an adder 5 without delay. |
