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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.

Active Publication Date: 2015-09-02
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, the control system of this technology has a simple structure and poor control accuracy.

Method used

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  • Electric active heave compensation winch system
  • Electric active heave compensation winch system
  • Electric active heave compensation winch system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 As shown, this embodiment includes: a cable discharge mechanism 6 arranged on the cable, a heave measuring unit 8 for measuring the heave velocity and heave displacement of the hoisting point 9 of the hoisting point 9 mechanism, and a winch connected to the winch driving motor Drive unit 2, winch controller 3, and energy processing unit 1 for recycling regenerative energy, wherein: the heave measurement unit 8 is connected to the winch controller 3 and outputs heave speed and displacement data, and the energy processing unit 1 and the winch The main circuit of the drive unit 2 is connected to regenerate regenerative energy. The control circuit of the winch drive unit 2 is connected to the winch controller 3 and transmits the motor encoder speed, number of turns and angle. The winch controller 3 calculates the angle and number of turns of the motor encoder according to And speed data, reduction ratio of reduction gear, heave speed and displacement data, ...

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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.

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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Application Information

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IPC IPC(8): B66D1/48B66D1/50
CPCB66D1/485B66D1/505B66D2700/0141B66D2700/0183
Inventor 葛彤吴超庄广胶赵敏王旭阳杨超然
Owner SHANGHAI JIAO TONG UNIV
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