Predefined-Time Dynamic Surface Control of Tank Horizontal Stabilization System With Disturbance

Abstract

Modern new tanks are difficult to achieve high precision control of the horizontal stabilization system due to electromechanical coupling and road surface disturbance during high-speed combat. A predefined-time dynamic surface controller (DSCPT) is proposed for the fast stabilization and strong disturbance problems of the tank horizontal stabilization system. Based on backstepping control technique, the controller introduces a time-varying tuning function and a first-order filter to construct the dynamic surface error, where the time-varying tuning function ensures that the tracking error is bounded within a predefined time, and the hyperbolic tangent function ensures robustness and the continuity of the control input. Using Lyapunov theory, it is rigorously demonstrated that the control method is capable of achieving tracking error convergence to a predetermined range at any predefined time in the presence of system uncertainty, and that it is able to ensure global stabilization of the closed-loop system. In addition, a transfer model is used to link pavement roughness and major disturbance, and then added to the simulation. Finally, the effectiveness of the proposed control method is verified through a large number of comparative simulations.