Automatic navigation control system improving seakeeping performance of ship

Abstract

The invention discloses an automatic navigation control system improving the seakeeping performance of a ship. The automatic navigation control system can improve the rolling characteristic, the pitching characteristic and the heaving characteristic. A control unit controls the pitching angle of the ship through the differential mode motion between an inverted-T-shaped hydrofoil of the bow and double wave suppression plates of the stern, controls the rolling angle of the ship through the differential mode motion between the double wave suppression plates of the stern, and controls whole heaving of the ship through the common mode motion between the inverted-T-shaped hydrofoil of the bow and the double wave suppression plates.

Description

technical field [0001] The invention belongs to the field of ship navigation automatic control system design, and in particular relates to a navigation automatic control system for improving the seakeeping of ships. Background technique [0002] When the ship is sailing in the wind and waves, the ship will have a motion response due to the influence of the wind and waves. Under high sea conditions, the ship will have a large motion response. The seaworthiness of the ship will be greatly weakened, and even the maritime safety of the ship will be threatened. Improving the seakeeping of the ship and reducing the motion response of the ship in the wind and waves are the important content and the direction of the ship performance design. [0003] At present, domestic studies have been carried out on methods and devices for improving seakeeping of monolithic ships based on fin stabilizers, but they can only improve the rolling characteristics, but not the pitch and heave characte...

AI Technical Summary

Problems solved by technology

However, small waterplane surface ships cannot achieve self-stabilization in the longitudinal direction, and there is a risk of capsizing under wind and wave conditions. Its control system needs to be continuously controlled to maintain self-stabilization without capsizing. It is also more complicated, and usually adopts a multi-fin structure with a large resistance loss

The resistance of the appendage in the form of fins is usually much greater than that of the wave breaker or hydrofoil, so it has the disadvantage of large rapidity loss

[0005] At the same time, the existing technology also proposes a fixed-wing device for improving the seakeeping of ships, but the wing angle of the fixed-wing device is fixed under various sea conditions, and the wing angle cannot be adjusted to the optimal angle according to the wave and speed conditions, and the navigation resistance is large. , The generated anti-rolling force cannot correspond to the actual demand, the natural anti-rolling effect is poor, the loss of rapidity is large, and the applicability to sea conditions is poor

[0006] To sum up, at present, there is no practical navigation automatic control system with good versatility, small rapidity loss, simple implementation method, and high efficiency in improving ship seakeeping.

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