Semi-physical simulation method for DP-3-level dynamic positioning

Abstract

The invention aims to provide a semi-physical simulation method for DP-3-level dynamic positioning. The semi-physical simulation method comprises the steps of: firstly, appointing a command power display and control platform in a display and control system, and commanding one of control computers to be a master control computer through the command power display and control platform; after a simulation work station completes the setting of a required sea state, sending motion information of a floating facility to an information conversion intermediate machine once after one simulation beat; then performing resolution on motion control by the control computers respectively, and performing majority voting on a resolution result of each beat to finally determine the control output of the master control computer; and acquiring a simulation control command resolved by the group of the control computers through a serial port by the information conversion intermediate machine, sending digitalsignals to a simulation computer through a network, and simultaneously transmitting the motion information, which is obtained through resolution of the simulation computer, of the current floating facility to the control computers through a serial port so as to ensure that the control computers perform a new round of control command solving according to updated sate information. According to the invention, the system reliability is greatly increased.

Description

technical field [0001] The invention relates to a positioning method in the field of marine engineering. Background technique [0002] As the development of offshore oil and gas resources continues to expand into the deep sea, the traditional mooring positioning method is gradually being replaced by dynamic positioning, and positioning based on the power of marine structures has become the main choice for deep-sea oil and gas production facilities. At the same time, deep-sea operations have put forward more stringent requirements for the safety and reliability of the dynamic positioning system of high-value-added offshore structures such as drilling platforms and drilling ships. The traditional DP-1 dynamic positioning system can no longer fully guarantee the deep-sea The safety and reliability of the crew and equipment on board during operation. According to statistics, the vast majority of deep-water semi-submersible drilling platforms currently have the DP-3 grade mark, ...

AI Technical Summary

Problems solved by technology

The patent "Dynamic Positioning Model Test System" (application number: 200310108552.6) used a far-infrared non-contact six-degree-of-freedom position measurement system in the pool test, thereby overcoming the defect of low measurement accuracy of the conventional position measurement system in the pool test

For redundant dynamic positioning systems, especially DP-3 level dynamic positioning systems, the existing research results are rarely involved

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