Active wave compensation control system and method based on wave trend judgment

Abstract

The invention discloses an active wave compensation control system and method based on wave trend judgment. The system comprises a sensor network, a hydraulic drive system and a wave compensation controller, wherein the wave compensation controller comprises a PLC; an MRU of the sensor network is utilized by the system to measure ship moving parameters; the MRU and the acoustic wave meter are coupled to obtain the wave motion parameters; a rotary encoder is utilized to measure the motor rotation speed and obtain load motion parameters; the PLC analyzes the motion parameters so as to obtain motion situations of ships, load and waves relatively to the static seal level, namely, a reference system by taking the static sea level as motion parameters is used for solving the issue of mutual coupling of the ships, load and waves; water entry (or water exit) opportunity is selected for analyzing the wave parameters and judging the wave trend by the PLC, and the water entry (or water exit) process is controlled by controlling the motion of the hydraulic driving system, so that the safety and the stability of the offshore hoisting operation are improved.

Description

technical field [0001] The invention relates to a wave compensation control system and method, in particular to an active wave compensation control system and method applied in the fields of deep-water operation cranes, deep-water winches, lifeboat (rescue boat or working boat) retracting devices and the like. Background technique [0002] With the development of my country's ocean engineering industry, offshore platforms or ships are more and more frequently engaged in offshore lifting operations, and their operating range is from offshore to deep sea, even ultra-deep sea, and the difficulty of operation is also increasing. The areas related to offshore lifting operations mainly include the following aspects: [0003] 1) Ocean engineering deepwater operation cranes and hoisting winches, which are mainly used for lifting deepwater equipment, such as drilling and production equipment, underwater pipelines, underwater anchoring equipment, etc.; [0004] 2) Lifeboat (rescue bo...

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the problem that the hoisting load is subjected to a large wave impact load when it enters the water (or when it exits the water) in the existing offshore hoisting operation, the present invention proposes an active wave compensation control system and method based on wave trend judgment. On the basis of the common active wave compensation control system, the timing judgment and process control function of water entry (or water exit) are added to further improve the safety and stability of offshore lifting operations. Working boat) retractable device and other fields

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