doi: 10.7763/IJCTE.2015.V7.1004
Controller Design for Tracking Control of an Under-Actuated Surface Ship
Werneld E. Ngongi
,
Jialu Du
- School of Information Science and Technology, Dalian Maritime University, Dalian, Liaoning 116026 China.
Abstract
In this paper an output feedback controller for tracking control of surface ships based on Euler-Lagrange equations has been proposed. It has been assumed that a surface ship is moving in a horizontal plane and under-actuated in sway direction. The change of coordinate’s method is applied to overcome the third order component that arises in the Lyapunov function derivatives due to Coriolis and centripetal forces term. The design of the controller is based on the backstepping control technique and Lyapunov stability theory. Firstly, the observer is derived using the change of coordinate method. Next, backstepping control technique is employed to derive the control law. Finally, a global asymptotic convergence is proven using Lyapunov stability theorems. Simulations are provided to demonstrate the performance of the designed controller and prove tracking error of the controller convergence.
Keywords
- Change of coordinates
- euler-lagrange equations
- output feedback controller
- under-actuated surface ship
- third order component
- backstepping control technique
How to Cite
Werneld E. Ngongi and Jialu Du, "Controller Design for Tracking Control of an Under-Actuated Surface Ship," International Journal of Computer Theory and Engineering, vol. 7, no. 6, pp. 469-475, 2015. https://doi.org/10.7763/IJCTE.2015.V7.1004
Copyright & License
Copyright © 2015 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).