A method for automatic adjustment and control of ship attitude

Abstract

The invention discloses a control method for automatic adjustment of ship attitude, which relates to the technical field of ships. The method is constructed according to the monitored ship attitude and the liquid level state of each ballast tank, and is related to the allocation amount of ballast water in each ballast tank The torque balance formula and the constant water volume allocation formula are based on the principle of sequential allocation according to the order of action distance from large to small to solve the torque balance formula and the constant water volume allocation formula to obtain the ballast water allocation volume of each ballast tank, which can be The ballast water between the ballast tanks is transferred to each other to adjust the tilt state, and the ship's draft is automatically adjusted to ensure the ship's attitude in real time, which is conducive to the safety of the ship. The ship's attitude adjustment realizes automatic control, which 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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