A ship control method for improving the safety guarantee capability of ships in severe sea conditions

A technology of safety guarantee and control method, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve the problems of insufficient stability consideration, weak stability, and emphasis on comprehensive navigation performance.

Inactive Publication Date: 2020-12-29
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

When the ship maneuverability index T0 is a negative value (that is, the ship with an unstable course), the control stability is relatively weak, so it is not suitable for particularly severe sea conditions
[0005] 2) The control algorithm has only one control strategy, which focuses on the comprehensive performance of navigation, and does not consider the stability under strong wind and waves.

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  • A ship control method for improving the safety guarantee capability of ships in severe sea conditions
  • A ship control method for improving the safety guarantee capability of ships in severe sea conditions
  • A ship control method for improving the safety guarantee capability of ships in severe sea conditions

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Embodiment Construction

[0027] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0028] It should be noted that, in the following specific embodiments, when describing the embodiments of the present invention in detail, in order to clearly show the structure of the present invention for the convenience of description, the structures in the drawings are not drawn according to the general scale, and are drawn Partial magnification, deformation and simplification are included, therefore, it should be avoided to be interpreted as a limitation of the present invention.

[0029] Considering the planar motion of the ship, following Abkowitz's research plan, only the first-order small quantity is retained when expanding the fluid dynamics X, Y, N into Taylor series, and considering the left-right symmetry of the ship, the relevant derivatives are as follows: x v ,X r ,X δ , Y u , N u equal to zero, the mathe...

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Abstract

The invention discloses a ship control method for improving the safety guarantee capability of a ship under severe sea conditions. A control strategy is divided into two types for severe sea conditions and non-severe sea conditions. A second-order closed-loop gain forming algorithm is employed for mainly guaranteeing the stability under the severe sea conditions, thereby achieving the stable control of an unstable ship and guaranteeing the good stability of the ship under the condition of strong wind and waves; the second-order closed-loop gain forming algorithm is improved for mainly guaranteeing the overall performances under the non-severe sea conditions, and a nonlinear feedback technology, an integration term and a proportional constant term are added to form an advanced control algorithm, thereby guaranteeing the overall performances of the navigation. The two types of strategies cooperate with each other, thereby guaranteeing the navigation efficiency of the ship, and guaranteeing the navigation safety under the special conditions.

Description

technical field [0001] The invention relates to the fields of ship control engineering and ship automation navigation, and more specifically, relates to a ship control method for improving ship safety assurance capabilities in severe sea conditions. Background technique [0002] Goods transported by sea are usually characterized by high value due to their large loads. Maritime navigation is different from land transportation, and the complexity of the environment brings many risks. Due to the characteristics of large impact, uncertainty and strong pulsation, wind and waves have brought great hidden dangers to transportation safety. Therefore, the controller design of an intelligent ship must consider how to ensure the stability of the control when the sea conditions become severe. [0003] Traditional ship motion control aims to improve the comprehensive performance of navigation, that is, to improve the six characteristics of the control rate: stability, accuracy, speed, ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B13/04
CPCG05B13/042
Inventor 张显库张国庆韩旭
Owner DALIAN MARITIME UNIVERSITY
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