Dynamic positioning thrust system for Z propeller and elevating rudder

Abstract

The invention relates to a dynamic positioning thrust system for an all direction propeller and a lifting rudder, which belongs to dynamic positioning technical equipment in the field of ship marine technology. The dynamic positioning thrust system comprises the all direction propeller and the lifting rudder. The all direction propeller is arranged below the stern part of a ship, and a C1 axial line thereof vertically intersects with a longitudinal symmetric axis of the ship; and the lifting rudder is arranged below the bow part of the ship, and a C2 axial line thereof vertically intersects with the longitudinal symmetric axis of the ship. In an abyssal environment, when the ship is in the executive process of performing dynamic positioning, the lifting rudder and the all direction propeller cooperate together to finish tasks of overcoming surging, swaying and yawing of the ship; and under a control instruction of a control system, the all direction propeller and the lifting rudder are controlled to implement thrust executive function of the dynamic positioning according to the established proposal. The technology of the invention can be applied to large size, medium size and small size ships or semi-submersible ocean platform, has a positive significance on improving the dynamic positioning technology, and can produce obvious economic benefit.

Description

technical field [0001] The invention relates to a dynamic positioning thrust system, in particular to a dynamic positioning thrust system composed of an azimuth propeller and an elevator rudder, which belongs to the dynamic positioning technical equipment in the field of ship marine technology. Background technique [0002] The basic function of the dynamic positioning system is to keep the ship at the specified position and heading under the action of the thruster under certain marine environment and engineering operation conditions. When a ship is operating at sea, the environmental loads mainly include wind force, current force and wave force. Under the complex sea conditions of wind, wave and current, the unconstrained ship has the motion characteristics of six degrees of freedom. These movements all contain low frequency components and high frequency components. The low-frequency motion component can be considered to be produced by propeller thrust, rudder force, flow...

AI Technical Summary

Problems solved by technology

However, the mechanism for performing positioning is only generally given as the main thruster, steering gear or auxiliary thruster, and no specific construction and implementation methods are provided.

The application number is 94117369.0, and the invention patent named "Neural Network Control System and Method for Ship Dynamic Positioning" also only gives its control system including computer, potential amplifier, analog-to-digital converter, positioning system, filter, Learners, optimization decision makers, and executive agencies, etc., do not provide specific construction and implementation methods for execution positioning

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