Vibration control of 2-D variable-length flexible riser systems with unknown boundary disturbance

被引：1

作者：

Wang, Meng ^{[1
]}

Zhang, Jianhua ^{[1
]}

Chea, Cheav Por ^{[2
]}

Sun, Ke ^{[3
]}

Liu, Feng ^{[4
]}

机构：

[1] Harbin Engn Univ, Coll Aerosp & Civil Engn, Harbin 150001, Peoples R China

[2] Monash Univ, Dept Civil Engn, Clayton, Vic 3800, Australia

[3] North China Elect Power Univ, Sch New Energy, Beijing 102206, Peoples R China

[4] Harbin Engn Univ, Coll Shipbldg Engn, Harbin 150001, Peoples R China

来源：

OCEAN ENGINEERING | 2024年 / 312卷

基金：

中国国家自然科学基金;

关键词：

Flexible riser; Vibration control; Disturbance observer; Boundary control; SLIDING MODE CONTROL; MARINE RISERS; ACTIVE CONTROL; STABILIZATION;

D O I：

10.1016/j.oceaneng.2024.119042

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

The riser system is subject to vibration due to marine environmental loads, which can affect the efficiency of the system or even destroy it. This paper proposes a solution for the vibration control problem of a 2-D variablelength flexible riser based on PDE model. Firstly, a disturbance observer is developed to estimate and offset the unknown disturbance in the feedback loop. Based on the above method, an effective boundary controller is designed to realize the elastic suppression goal of the 2-D variable-length flexible riser. Secondly, when considering the asymmetric output constraints, a time adjustment function is introduced to develop a new controller based on the barrier Lyapunov function, which realizes the control objective of suppressing the boundary vibration of the flexible riser within specified constraints in a finite time. Finally, the effectiveness of the controller is verified by simulation examples.

引用

页数：11

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