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Finite-Time Trajectory Tracking Control of Surface Vehicle Based on Adding a Power Integrator Technique
ZENG Daohui, CAI Chengtao
Ship & Boat
2024, 35 (02):
9-18.
DOI: 10.19423/j.cnki.31-1561/u.2024.02.002
A finite-time trajectory tracking control scheme based on the extended state observer is proposed for surface vehicles with model parameter uncertainties and unknown time-varying disturbances. Firstly, a novel finite-time control law is proposed based on the backstepping technique and “adding a power integrator” technique. The designed controller can ensure the trajectory tracking errors of surface vehicles converge to the neighborhood around the origin within a finite time by using continuous feedback. The finite-time stability of the closed-loop control system is then strictly proved using the Lyapunov theory. Finally, the simulation results are provided to demonstrate the effectiveness of the proposed control scheme.
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