Automatic adjustment control method for ship attitude

Abstract

The invention discloses an automatic adjustment control method for ship attitude, which relates to the technical field of ships, and comprises the following steps of: constructing a moment balance formula and an allocation water quantity constant formula related to ballast water allocation quantity of each ballast tank according to a monitored ship attitude and a liquid level state of each ballast tank; solving the moment balance formula and the allocation water quantity constant formula on the basis of the principle of sequentially allocating according to the action distance from large to small to obtain the ballast water allocation quantity of each ballast tank, so that the ballast water mutual allocation between the ballast tanks can be subjected to inclination state adjustment; and automatically adjusting the ship draft to ensure the posture of the ship in real time, so that the ship safety is facilitated, and the ship posture adjustment is automatically controlled and is more accurate and efficient.

Description

technical field [0001] The invention relates to the technical field of ships, in particular to a control method for automatic adjustment of ship attitude. Background technique [0002] The attitude of the ship mainly includes the tilt state and draft state of the ship, which is of great significance to the safety of the ship. At present, before leaving the port or during the voyage, the ship can only adjust the ship's inclination state and draft state by manually pumping or draining the ballast tank inside the ship with the assistance of the dynamic inclinometer, so as to ensure the ship's attitude. smooth. However, the method of manually adjusting the attitude of the ship is not only time-consuming and labor-intensive, but also prone to the following problems: (1) When there are many ballast tanks on the ship, it is impossible to quickly judge which ballast tanks need to be drained or pumped in by manual experience. To produce the most reasonable restoring moment, it will...

AI Technical Summary

Problems solved by technology

However, the method of manually adjusting the attitude of the ship is not only time-consuming and labor-intensive, but also prone to the following problems: (1) When there are many ballast tanks on the ship, it is impossible to quickly judge which ballast tanks need to be drained or pumped in by manual experience. Generate the most reasonable restoring moment, which will cause the manual adjustment of the ship's attitude to be too slow

(2) The ship is always sloshing, especially when the draft is too shallow or the sea conditions are high, relying on manual experience and manual operation is prone to insufficient or over-adjustment of the ship's attitude, and serious over-adjustment will cause the ship to capsize; and due to the subjective feeling of the crew The difference in own experience and technical ability makes the manual adjustment of the attitude of the artificial ship inefficient

(3) The conventional ship attitude adjustment method is to manually pump water from the seabed door to each ballast tank through the ballast pump, or to drain water from the ballast tank through the ballast pump, and the more efficient method is to use the ballast pump to The water in the ballast tank on the sinking side of the hull enters the floating side, but it is limited to the level of the crew and the familiarity with the ship, so it is dangerous to operate manually, and it is prone to over-adjustment and improper adjustment, which will cause the ship to capsize

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