海洋环境监测平台数据采集吊舱减摇装置动力学分析与试验

Dynamic analysis and experiment of anti-rolling device for data acquisition pod of marine environment monitoring platform

随着海洋牧场建设向纵深发展,环境监测平台已广泛应用于海洋牧场海水养殖环境监测中。针对生产使用的海洋环境监测平台数据采集吊舱布放回收过程中因受风、浪、流影响下出现的电缆断裂损坏问题,设计了一种海上平台吊舱减摇装置。基于牛顿第二定律建立了海上平台横摇、纵摇激励下的吊舱减摇装置动力学模型,并使用Matlab/Simulink软件进行了数值仿真分析,比较了有无减摇装置情况下吊舱摆幅的变化情况。结果显示:在有减摇装置的情况下,吊舱的面内角摆动幅度可减小约66.9%,面外角摆动幅度可减小约69%,平均减摇比为67.95%,在已有的理论基础上搭建了样机并进行了试验验证。结果显示,吊舱减摇装置对吊舱的摆幅具有明显的抑制作用,面内角摆动幅度可减小约73.5%。研究表明,吊舱减摇装置对提高海洋牧场监测平台数据采集系统的可靠性与安全性具有重要的实践指导意义。

With the in-depth development of marine ranching construction,environmental monitoring platforms have been widely used in the monitoring of mariculture environments in marine ranches.In view of the problem of cable breakage and damage that occurs during the deployment and recovery process of the data acquisition pod of the marine environmental monitoring platform used in production due to the influence of wind,waves and currents.A pod anti-rolling device for offshore platforms is designed.Based on Newton's second law,a dynamic model of the pod anti-rolling device under the excitation of rolling and pitching of the offshore platform is established and numerical simulation analysis was carried out using Matlab/Simulink software,and the changes in the swing amplitude of the pod with and without the anti-rolling device were compared.The results show that in the case of having an anti-rolling device,the swing amplitude of the in-plane angle of the pod can be reduced by about 66.9%,and the swing amplitude of the out-of-plane angle can be reduced by about 69%.The average anti-rolling ratio is 67.95%.Based on the existing theory,an experimental prototype was built and tested for verification.The test results show that the pod anti-rolling device has an obvious restraining effect on the swing amplitude of the pod.The swing amplitude of the in-plane angle can be reduced by about 73.5%.The research shows that the pod anti-rolling device has important practical guiding significance for improving the reliability and safety of the data acquisition system of the marine ranch monitoring platform.