Thrust distribution optimization method considering propeller performance

Abstract

The invention relates to a thrust distribution optimization method considering propeller performance. The method comprises the following steps of (1) forming a ship stress model in a matrix form, (2)receiving an expected thrust signal, (3) carrying out noise judgment, (4) solving the rotating speed of each propeller and the rudder angle of each rudder by using a single-step planning method, (5) analyzing whether a reasonable rotating speed and a reasonable rudder angle can be generated or not, if yes, entering the step (7), and if not, entering the step (6), (6) performing multi-step planning, dividing the expected thrust signal into a plurality of steps, and respectively solving the rotating speed of each propeller and the rudder angle of each rudder by using a single-step planning method, and (7) transmitting the solved rotating speed of each propeller and the rudder angle of each rudder to the propeller and a controller of the rudder. Unreasonable expected signals can be eliminated, generated thrust signals can adapt to the performance of the thruster, the rationality of a distribution result is improved, and the dislocation phenomenon of ship dynamic positioning is reduced.

Description

technical field [0001] The invention belongs to the technical field of ship thrust distribution, relates to a ship thrust distribution optimization method, in particular to a thrust distribution optimization method considering propeller performance. Background technique [0002] At this stage, with the development of science and technology and the diversification of types of offshore operations, the requirements for ship control accuracy are becoming more and more stringent. To this end, the ship needs to be equipped with new propulsion equipment such as lateral propellers and azimuth propellers to increase the reliability and maneuverability of the propulsion system. What follows is that the complexity of the ship's thrust structure becomes higher and higher, which increases the difficulty of the thrust distribution algorithm. [0003] When distributing thrust, it is necessary to consider basic elements such as the maximum power of the propeller, the rate of change of the ...

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Problems solved by technology

[0006] In order to solve the defects and deficiencies of the above problems, the present invention proposes a thrust distribution optimization method considering propeller performance, which can use the judgment mechanism to eliminate unreasonable expected signals, and utilize the combination of single-step planning and multi-step planning methods to make The generated thrust signal can adapt to the propeller's own performance, improve the rationality of the distribution results, and reduce the out-of-position phenomenon of the ship's dynamic positioning

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