Vibration Control of a Riser-Vessel System Subject to Input Backlash and Extraneous Disturbances

This brief addresses the vibration control of a marine riser-vessel system influenced by extraneous disturbances and input backlash. By resolving the backlash nonlinearity as an expected control signal and a nonlinear error, this backlash error and extraneous disturbance are visualized as an unknown...

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Bibliographic Details
Published inIEEE transactions on circuits and systems. II, Express briefs Vol. 67; no. 3; pp. 516 - 520
Main Authors Zhao, Zhijia, Lin, Shimin, Zhu, Dachang, Wen, Guilin
Format Journal Article
LanguageEnglish
Published New York IEEE 01.03.2020
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Adaptive control
boundary control
Circuits and systems
Control stability
Disturbances
Flexible risers
input backlash
Nonlinear control
Nonlinearity
Stability analysis
Upper bounds
Vessels
Vibration control
Vibrations
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Summary:This brief addresses the vibration control of a marine riser-vessel system influenced by extraneous disturbances and input backlash. By resolving the backlash nonlinearity as an expected control signal and a nonlinear error, this backlash error and extraneous disturbance are visualized as an unknown "disturbance-like" item, and then an adaptive control strategy is established to achieve the riser's vibration abatement and compensate for the "disturbance-like" term's unknown upper-bound. The Lyapunov's criterion is exploited to analyze and demonstrate the bounded stability in the controlled system. Simulation examples are finally provided to demonstrate the applicability and effectiveness of the presented scheme.
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ISSN:1549-7747
1558-3791
DOI:10.1109/TCSII.2019.2914061