Adaptive Control of Flexible Marine Risers with Varying Length

EasyChair Preprint 1714

Abstract

In this paper, a flexible marine riser with varying length undergoing the influence of the hydrodynamic force and an unknown disturbance to drillship is investigated. The governing equation describing the dynamics of the riser, the drillship, and the top hat is established based on the extended Hamilton’s principle. In order to suppress the lateral vibration of the riser, an adaptive boundary controller is developed. According to the Lyapunov method, the stability of the system under the boundary control and the adaptive law is proven. Finally, the efficiency of the proposed control algorithm is validated via the simulation results.

Keyphrases: Boundary control, Lyapunov method, adaptive control, axially moving system, marine riser, varying length, vibration suppression

@booklet{EasyChair:1714,
  author    = {Phuong-Tung Pham and Keum-Shik Hong},
  title     = {Adaptive Control of Flexible Marine Risers with Varying Length},
  howpublished = {EasyChair Preprint 1714},
  year      = {EasyChair, 2019}}