Design of performance-guaranteed controller for trajectory tracking of surface vessels

Abstract

In this investigation, a performance-guaranteed controller is created for surface vessel trajectory tracking in order to optimize the control system’s initial-state and stable-state features. First, an original high-order barrier functional is constructed to tackle the issue that the current integral barrier functional does not offer the necessary performance control. The prescribed performance function is subsequently revised based on the current one in order to change the rate of decline. It is easy to combine the enhanced prescribed performance function with the proposed barrier functional. Furthermore, the tracking controller for the surface vessel is built using the presented barrier functional, performance boundary function, and disturbance observer in order to preserve both initial-state and stable-state performances of the position error and address the effect of system uncertainty on control precision. It can be done to demonstrate that the position error stays inside the pre-set performance function and that all surface vessel errors could exponentially approach a nearby value of zero applying Lyapunov stability theory and supplied Theorem 1. Finally, a simulation experiment on a fully actuated marine vessel confirms the viability of the proposed approach to handle the performance-guaranteed tracking control by adjusting the value of various auxiliary parameters in the new barrier functional.