NDLI: Adaptive stabilisation of a flexible riser by using the Lyapunov-based barrier backstepping technique

Content Provider	IET Digital Library
Author	Guo, Fang Liu, Yu Luo, Fei
Abstract	The focuses of this study are the vibration control and constraint problems of an input and output constrained flexible marine riser system, in which system parametric uncertainties are taken into account. Through the combination of integral-barrier Lyapunov function (IBLF), backstepping technique and adaptive technique, an adaptive Lyapunov-based barrier control with an auxiliary system is developed aiming at achieving the control purposes of vibration suppression and constraint satisfaction, where the auxiliary system is to compensate for the input saturation, IBLF is to solve the output constraint and adaptive laws are to handle the parametric uncertainties. In addition, disturbance observer is designed in the barrier term of IBLF, which could attenuate the effects of unknown boundary disturbance. With the proposed control, the uniform boundedness and stability of the closed-loop system are easily achieved. Finally, the significance of the proposed control is demonstrated via numerical simulation.
Starting Page	2252
Ending Page	2260
Page Count	9
ISSN	17518644
Volume Number	11
e-ISSN	17518652
Issue Number	Issue 14, Sep (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/11/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2017.0076
Journal	IET Control Theory & Applications
Publisher Date	2017-05-26
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Control Adaptive Law Adaptive Stabilisation Adaptive Technique Auxiliary System Backstepping Technique Closed Loop System Closed-loop System Stability Constraint Problem Constraint Satisfaction Constraint Satisfaction Problem Control Nonlinearities Disturbance Observer IBLF Input Output Constrained Flexible Marine Riser System Input Saturation Integral-barrier Lyapunov Function Lyapunov Method Lyapunov-based Barrier Backstepping Technique Lyapunov-based Barrier Control Marine System Marine System Control Mechanical Engineering Mechanical Variables Control Nonlinear Control System Self Adjusting Control System Stability Stability in Control Theory System Parametric Uncertainties Uncertain System Vehicle Mechanics Vibration Control Vibration Isolation Vibration Suppression Vibrations And Shock Wave
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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