Electric active heave compensation winch system

A technology of heave compensation and winch, applied in the direction of hoisting device, spring mechanism, etc., can solve the problems of poor control accuracy and simple structure, and achieve the effect of simple structure and control, high control accuracy and reliability.
CN104876145AActive Publication Date: 2015-09-02SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI JIAO TONG UNIV
Publication Date
2015-09-02

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Abstract

The present invention relates to an electric active heave compensation winch system in the special vessel technology field. The electric active heave compensation winch system comprises a cable arrangement mechanism disposed on a cable, a heave measuring unit for measuring heave velocity and accelerated velocity of a suspension point on a suspension point mechanism, a winch driving unit connected with a winch motor, a winch controller, and an energy processing unit used for energy recovery and utilization. Motion parameters of a vessel in a future short period are actively predicted based on history data and vessel heave motion data detected in real time, feedforward control of vessel motion velocity prediction is calculated, and feedback control of relative velocity of a load and the vessel and feedback control of position drift are simultaneously calculated.
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Description

technical field

[0001] The invention relates to a device in the technical field of special ships, in particular to an electric active heave compensation winch system. Background technique

[0002] Domestic research on heave compensation winches mainly focuses on passive compensation methods, such as gas-liquid hybrid compensation systems, and lacks the development of active compensation systems. Foreign active heave compensation winches mainly use feedback control. Due to the strong randomness of sea wave motion, it is difficult to improve the compensation accuracy by pure feedback control.

[0003] After searching the existing technology, it was found that the Chinese Patent Document No. CN102691484A was published (announced) on 2012.09.26, which disclosed a new type of heave compensation device for the drawworks of the offshore floating drilling platform, which uses a differential planetary gear train as the heave compensation drawworks The transmission mechanism, the pow...

Claims

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