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A Vibration Control Strategy of Offshore Platform Based on Switching Control System

A vibration control, offshore platform technology, applied in control/regulation systems, mechanical oscillation control, non-electric variable control, etc., to improve the effect of vibration suppression

Inactive Publication Date: 2021-03-26
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with active control, active control of structural performance variability is easier to implement and more economical, but still has the disadvantages of active control

Method used

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  • A Vibration Control Strategy of Offshore Platform Based on Switching Control System
  • A Vibration Control Strategy of Offshore Platform Based on Switching Control System
  • A Vibration Control Strategy of Offshore Platform Based on Switching Control System

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] How to implement it will be described in detail below in conjunction with the accompanying drawings.

[0062] 1. Offshore platform vibration control system based on APTMD

[0063] image 3 It is an APTMD-based offshore platform vibration control system, including active mass dampers and passive mass dampers, which exhibit different control performances. Active mass dampers have better vibration suppression effects on structural vibrations caused by wind and small earthquakes. Conversely, passive mass dampers are more effective for large earthquakes. Therefore, the active-passive composite tuned mass damper (APTMD) is used to control the vibration of the offshore platform, and a vibration control strategy for switching between AMD and TMD is proposed. The specific performance is: when there is an input to the actuator, this The APTMD control structure behaves as an AMD, and when the actuator input is zero it behaves as a TMD. Therefore, the switch between AMD and TMD ...

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Abstract

The invention discloses a marine platform vibration control strategy based on a switching control system. The marine platform design switching control strategy based on APTMD mainly comprises switching vibration control under computer digital sampling, switching vibration control with incomplete sensor measurement data, switching vibration control with parameter uncertainty, switching vibration control with input time delay and multi-target switching vibration control. A marine platform is used as a research object, vibration table tests of a marine platform-APTMD structural model under environment excitation of a wave force, a wind force, seismic waves and the like are designed, a vibration reduction effect of active and passive switching vibration control is researched, and the rationality and effectiveness of a switching system theory applied to vibration control over the marine platform are verified.

Description

technical field [0001] The invention relates to an ocean platform vibration control strategy based on a switching control system, belonging to the field of ocean platform vibration control. Background technique [0002] The current world energy crisis is becoming more and more serious, and the supply and demand of oil resources will be tight for a long time. Since 1993, my country's petroleum products have been in short supply. Moreover, after entering the 21st century, with the rapid development of my country's national economy, my country's dependence on foreign oil products has continued to increase. This situation forces us to do everything possible to find more oil. Today, the proportion of offshore oil field exploration has increased significantly. Offshore platforms are the basic facilities for the development of offshore oil and gas resources. Since the first steel offshore oil exploration platform was built in the Couissana waters of Mexico in 1947, nearly 6,000 of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05D19/02
CPCG05D19/02
Inventor 邹文成钱科威李实毛骏向峥嵘
Owner NANJING UNIV OF SCI & TECH
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