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Comprehensive analysis and judgment method based on dynamic positioning capability rose diagram

A dynamic positioning and comprehensive analysis technology, applied in two-dimensional position/channel control and other directions, can solve the problem of not fully reflecting the dynamic positioning capability of marine structures

Active Publication Date: 2014-10-08
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is usually one-sided or varies from person to person, and does not fully reflect the overall dynamic positioning capability of marine structures

Method used

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  • Comprehensive analysis and judgment method based on dynamic positioning capability rose diagram
  • Comprehensive analysis and judgment method based on dynamic positioning capability rose diagram
  • Comprehensive analysis and judgment method based on dynamic positioning capability rose diagram

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Embodiment Construction

[0028] specific implementation plan

[0029] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] figure 1 is the working heading interval of the marine structure in a specific working sea area, as shown in the figure, the working heading interval of a marine structure is defined by a pair of counterclockwise order ψ start and ψ end composition. Through long-term offshore surveys, it is obtained that the working heading of the marine structure is at [ψ start , ψ end ] interval.

[0031] figure 2 It is a rose diagram of dynamic positioning capability of a marine structure. Should Figure 1 A total of 3 working conditions are displayed. When comparing the dynamic positioning capabilities under different working conditions from the traditional graph, it is easy to determi...

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Abstract

The invention discloses a comprehensive analysis and judgment method based on a dynamic positioning capability rose diagram. The comprehensive analysis and judgment method comprises the steps of calculating a probability density distribution function P (psi) of a heading of an ocean structure within a working heading interval [psistart, psiend]; customizing a judgment scheme according to the dynamic positioning capability comprehensive analysis and judgment standard; confirming the proportion factor lambda of the stability (shown in description) of the dynamic positioning capability in the whole dynamic positioning capabilities. The comprehensive analysis and judgment method can customize a corresponding judgment scheme according to the working condition of the ocean structure in a specific working sea area so as to comprehensively compare the positioning capability under different working conditions.

Description

technical field [0001] The invention relates to a comprehensive analysis and judgment method based on a dynamic positioning capability rose diagram, in particular to a comprehensive comparison method for a dynamic positioning capability rose diagram for different marine structures or the same marine structure under different thrust system configurations. Background technique [0002] As the field of human exploration extends to the vast ocean, the positioning problems of marine structures operating in deep water areas, such as offshore platforms and various working ships, have become increasingly prominent. In shallow water areas, the positioning of marine structures can still be solved by mooring, but as the water depth increases, the cost of mooring positioning increases exponentially, so a new positioning method is needed to solve the problem of marine structure positioning. Dynamic positioning emerged and developed under this background. The dynamic positioning system c...

Claims

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Application Information

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IPC IPC(8): G05D1/02
Inventor 王磊徐胜文金鑫汪学锋
Owner SHANGHAI JIAO TONG UNIV
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