Ship power distribution method capable of being used in different navigational speed modes

Abstract

The invention relates to a ship thrust distribution method capable of being used in different navigational speed modes. The ship thrust distribution method comprises the following steps: (1) establishing thrust calculation mathematical models of various propellers of a ship; (2) establishing a rudder force calculation mathematical model of the ship; (3) establishing a ship stress model based on the thrust calculation mathematical model and the rudder force calculation mathematical model of various propellers of the ship; (4) establishing an optimization objective function based on the optimalpower consumption and distribution effect of various propellers, and establishing corresponding constraint conditions based on the mechanical properties of various propellers and the ship stress model; and (5) solving the optimization objective function by using an optimization algorithm to obtain an actual thrust value of each thruster. Thrust distribution optimization in low-speed and medium-high-speed modes can be achieved through the combination of double propellers, double rudders and lateral propellers.

Description

technical field [0001] The invention belongs to the technical field of ship thrust distribution, and relates to a ship thrust distribution method, in particular to a ship power distribution method that can be used in different speed modes. Background technique [0002] With the emergence of ships of different purposes and the continuous increase in the number of ships, the ability to control the position of the ship itself during navigation has become more and more important. A ship with good dynamic positioning technology can not only complete various tasks efficiently, but also ensure that the ship is in a safe environment at any time. With the continuous advancement of science and technology, ship dynamic positioning technology has become more and more advanced. [0003] In the dynamic positioning technology, the thrust distribution system is an important part of the technology. Its function is to distribute the command force and moment calculated by the control system t...

AI Technical Summary

Problems solved by technology

[0004] At this stage, due to the limitation of ship types and uses, most researches are based on the thrust distribution optimization strategy of azimuth propellers and lateral propellers, and there are few studies on the optimization of thrust distribution methods for ships with propeller-rudder combinations and lateral propellers.

Moreover, in the existing research, for the thrust distribution method based on two propellers and two rudders, only the situation of the propeller front vehicle is used to realize the thrust distribution at medium and high speeds, and the thrust distribution in the low speed process is not realized.

Images