Calculation and Implementation Method of Hook Stability System for Offshore Ship Lifting Equipment
HUANG Nan
Abstract：The lifting equipment equipped on offshore test vessels,when laying and salvaging underwater equipment at sea,causes the lifting equipment to swing significantly like a mechanical pendulum due to the action of wind and waves,resulting in the inability to carry out offshore operations.This article proposes using rigid suspension rods instead of flexible ropes for lifting equip-ment,and reducing the swing amplitude of the suspension rods by controlling the electromagnetic brake torque on the connecting shaft to control the swing of the suspension rods.The motion equation of the hook on the suspension rod in this scheme is derived,and wave excitation is added to the motion equation.Then,the PID control method is used to simulate and calculate the control of the hook swing amplitude,and finally the feasible conclusion of the implementation scheme is obtained.
Keywords：offshore testinglifting rodsuspension equationcontrol strategyhook simulation
Publication Date：2025-07-20
Online Publishing Date：2025-09-25(First online date of this platform, not the publication date of the document)
Pages：4( 93-96 )