Thrust distribution management-based thrust distribution method for dynamic positioning vessel

Abstract

The invention provides a thrust distribution management-based thrust distribution method for a dynamic positioning vessel. The method comprises the following steps of: selecting propellers participating in work, and setting corresponding azimuth variable ranges; grouping the propellers participating in the work; setting corresponding offset for an omnibearing propeller group; and distributing thrust by using a secondary planning method. A thrust distribution management module is introduced, and the convenient and practical thrust distribution management-based thrust distribution method for the dynamic positioning vessel is disclosed according to the propeller configuration of the dynamic positioning vessel, so that the problems of the prior are well solved, the propellers are rationally used, the method is easy to operate, and has high popularization value, the execution capability of a propeller system is improved, the thrust requirements of a dynamic positioning (DP) controller are met.

Description

technical field [0001] The invention relates to a dynamic positioning control method, in particular to a thrust distribution method in a ship dynamic positioning system. Background technique [0002] Ship dynamic positioning means that the ship or offshore platform does not rely on the mooring system, but uses various sensors equipped with itself to automatically detect the deviation between the actual position of the ship and the target position, as well as the influence of disturbance forces such as external wind, waves, and currents. Use the computer to calculate the thrust and torque required to restore the ship to the target position in real time, and distribute the thrust to each thruster, so that each thruster can generate corresponding thrust and torque to offset the disturbance force, so that the ship can be as far as possible It can be accurately maintained at the required position on the sea level to achieve positioning. [0003] The thrust distribution unit can ...

AI Technical Summary

Problems solved by technology

[0004] Due to redundancy and safety requirements, dynamic positioning ships are equipped with more propellers, and due to propeller failure or energy consumption considerations during work, in some cases it is not necessary to put all the propellers into work; the propulsion of work Due to the special requirements of underwater devices (such as underwater acoustic equipment) on the propeller, the propeller cannot output thrust in any direction. It is often necessary to limit the direction of the propeller discharge flow by setting the thrust forbidden zone, which brings great advantages to the power positioning thrust distribution method. great difficulty

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