Adaptive Backstepping Tracking Control for an over–Actuated DP Marine Vessel with Inertia Uncertainties

International Journal of Applied Mathematics and Computer Science

Witkowska Anna¹  Śmierzchalski Roman¹ 

[1] Faculty of Electrical and Control Engineering, Gdańsk University of Technology, G. Narutowicza 11/12, 80-233Gdańsk, Poland;

关键词: over-actuated control;    adaptive control;    lyapunov function;    control allocation;    mimo system;   

DOI  :  10.2478/amcs-2018-0052

来源: DOAJ

【 摘 要 】

Designing a tracking control system for an over-actuated dynamic positioning marine vessel in the case of insufficient information on environmental disturbances, hydrodynamic damping, Coriolis forces and vessel inertia characteristics is considered. The designed adaptive MIMO backstepping control law with control allocation is based on Lyapunov control theory for cascaded systems to guarantee stabilization of the marine vessel position and heading. Forces and torque computed from the adaptive control law are allocated to individual thrusters by employing the quadratic programming method in combination with the cascaded generalized inverse algorithm, the weighted least squares algorithm and the minimal least squares algorithm. The effectiveness of the proposed control scheme is demonstrated by simulations involving a redundant set of actuators. The evaluation criteria include energy consumption, robustness, as well accuracy of tracking during typical vessel operation.

【 授权许可】

Unknown