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Path deviation generation analysis method for ship at sea

A track and ship technology, which is applied in the field of track deviation analysis and generation of ship track rudders, can solve problems such as large errors, and achieve the effects of improving accuracy and facilitating track control.

Inactive Publication Date: 2012-01-04
HARBIN ENG UNIV
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  • Description
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Problems solved by technology

On the one hand, the rough conversion method has the disadvantage of large errors. On the other hand, the isometric navigation method has the characteristic that the track is not optimal.

Method used

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  • Path deviation generation analysis method for ship at sea
  • Path deviation generation analysis method for ship at sea
  • Path deviation generation analysis method for ship at sea

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Embodiment Construction

[0038] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0039] combine figure 1 , the processing flow of the present invention is as follows: first set the longitude and latitude coordinates of the departure place and the destination, calculate the desired optimal track according to the given coordinate points, consider the limiting factors of the geographical environment, and carry out segmental correction to the expected optimal track , and then calculate the deviation between the ship and the track segment according to the current position of the ship, judge whether the ship is in the current track segment according to the calculated deviation, if so, repeat the calculation of the deviation between the ship and the track segment, if not, enter the next track segment calculation, and repeatedly calculate the deviation between the ship and the track segment.

[0040] The specific implementation steps are as follows: ...

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Abstract

The invention provides a path deviation generation analysis method for a ship at sea, which comprises the following steps of: (1) inputting longitude and latitude coordinates Q (xq, yq and zq) of a place of a departure, longitude and latitude coordinates M (xm, ym and zm) of a destination; (2) computing an expected optimum path; (3) correcting the expected path in segments; (4) computing the deviation between the ship and the path section; (5) judging whether the ship is in the current path section; and (6) if so, repeating the step (4), otherwise conducting the calculation of the next path section, and repeating the step (4). The path obtained by the invention can realize more economic and safer sailing, is beneficial to navigation, brings great convenience for autopilot sailing only by increasing shorter sailing distance, is also beneficial to path control, and also improves the control precision of paths.

Description

technical field [0001] The invention relates to a ship track and attitude control technology, in particular to a track deviation analysis generation technology of a ship track rudder. Background technique [0002] In ship navigation operations, track control is the most basic. It is expected to sail accurately along a planned route. First, it can save navigation operating costs. Second, it can ensure that ships operate on safe routes and reduce the risk of running aground and stranded. . Ship track control is mainly achieved by constantly changing the desired course. However, to form a closed-loop control, the precondition is that the whole process is inseparable from the measurement of the ship's current track deviation. [0003] The traditional method is to adopt the triangular similarity principle, roughly convert the deviation of the ship's track, or adopt the equiangular navigation method. On the one hand, the rough conversion method has the disadvantage of large err...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D1/02
Inventor 刘胜李高云李冰常绪成王宇超
Owner HARBIN ENG UNIV
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