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

作者：Liu, Yu^*; Huang, Haowei; Gao, Hongxia; Wu, Xinsheng

来源：Journal of Control Theory and Applications, 2013, 11(2): 316-323.

DOI：10.1007/s11768-013-1245-5

• Boundary control methods
• Boundary controls
• Closed loop stability
• Distributed parameter systems
• Internal fluid
• Lyapunov's direct method
• Partial Differential Equations (PDEs)
• Vibration reductions

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.

• 出版日期2013-5
• 单位华南理工大学