A Simulation Method for Motion of Offshore Floating Structures

Abstract

The invention relates to a simulation system for the motion of a floating structure on the sea, comprising: a mechanical structure, a floating structure model connected under the mechanical structure, and a drive control structure. The mechanical structure includes an X-axis moving device, a Y-axis moving device, and a Z-axis moving device. Device, steering mechanism and five horizontal plates. The five horizontal plates from top to bottom are suspension body, slewing frame, upper frame, X-direction plate and Y-direction plate. The simulation steps are as follows: according to the size and scale of the offshore floating structure , select and make an offshore floating structure model of appropriate size; check the position of the mechanical structure; check the connection status of the acceleration sensor; install the camera equipment; turn on the upper industrial computer, import the pre-converted motion data in the application program, The corresponding expected motion curve can be obtained as a reference for subsequent real-time feedback; the sampling operation is carried out; the motion controller drives the drive of each axis and the motor to run to realize the motion simulation of three axes.

Description

technical field [0001] The invention belongs to the technical field of physical simulation of deep-sea pipelines, and relates to a simulation system for floating structure motion on the sea. Background technique [0002] The environment in the ocean is relatively complex. In the ocean environment, the offshore floating structure and various equipment must bear the influence of various environmental factors such as wind, waves, currents and tides, as well as the load of the equipment itself. The motion response of offshore floating structures is complex, and often has six degrees of freedom motions such as surge, sway, heave, roll, pitch, and yaw, among which surge, sway, and heave motions have large amplitudes, and the There is also a large difference in the movement cycle of the. The motion performance of the platform will have a great impact on the stability of the structure and the normal operation of personnel and equipment, which directly determines the production effi...

AI Technical Summary

Problems solved by technology

In the field of marine engineering, tank tests are often used to analyze the dynamic response of floating structures (floating platforms, offshore wind turbines, FPSO, etc.), but tank tests are often difficult to operate, expensive, and the test period is long, and the tank test passes early wave generation. The resulting buoyant movement is a passive control

For the active control simulation of offshore floating structure motion, there is still a lack of effective test methods

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