耦合内流动力学的海洋柔性立管振动控制

摘要

To suppress the riser' s vibration and avoid the control spillover,based on the original infinitedimensional model of a flexible marine riser structure dynamically coupled with the time-varying internal fluid and ocean current,a boundary control was developed for the vibration reduction by applying the boundary control technique and high-gain observers.The stability of the control system and uniform boundedness of the closed-loop signals were strictly demonstrated by using the Lyapunov theory.The effectiveness of the proposed boundary control scheme was illustrated by some simulation results.%针对耦合时变内流和洋流动力学的海洋柔性立管系统,为有效抑制其振动和避免控制溢出问题,基于立管原始无限维模型,将边界控制技术与高增益观测器相结合,设计了边界控制器对立管振动进行主动控制,通过严格的数学分析,验证了控制作用下立管系统的稳定性和闭环系统状态的一致有界性.仿真结果验证了所设计边界控制算法对立管振动抑制的有效性.