Modeling and boundary control of a flexible marine riser coupled with internal fluid dynamics

查看全文 作　　者：Yu [1]LIU;Haowei [1]HUANG;Hongxia [1]GAO;Xinsheng [1]WU

机构地区：[1]College of Automation Science and Engineering, and Engineering Research Center for Precision Electronic Manufacturing Equipment of Ministry of Education, South China University of Technology

出　　处：《控制理论与应用(英文版)》索引2013年第11卷第2期,共8页

基　　金：supported by the National Natural Science Foundation of China(No.61203060);the Natural Science Foundation of Guangdong Province(No.S2011040005707);the Specialized Research Fund for the Doctoral Program of Higher Education(No.20120172120033);the Fundamental Research Funds for the Central Universities of SCUT(No.2011ZZ0020);the Special Funds for Safety Production of Guangdong Province(No.2010-95) 摘　　要：In this paper, vibration reduction of a flexible marine riser with time-varying internal fluid is studied by using boundary control method and Lyapunov's direct method. To achieve more accurate and practical riser's dynamic behavior, the model of marine riser with time-varying internal fluid is modeled by a distributed parameter system (DPS) with partial differential equations (PDEs) and ordinary differential equations (ODEs) involving functions of space and time. The dynamic responses of riser are completely different if the time-varying internal fluid is considered. Boundary control is designed at the top boundary of the riser based on original infinite dimensionality PDEs model and Lyapunov's direct method to reduce the riser's vibrations. The uniform boundedness and closed-loop stability are proved based on the proposed boundary control. Simulation results verify the effectiveness of the proposed boundary control. 关键词：边界控制内部流体海洋立管动力学建模柔性李雅普诺夫直接方法微分方程模型偏微分方程

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Modeling and boundary control of a flexible marine riser coupled with internal fluid dynamics

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