Three-Channel Decoupling Control for Fighter Aircraft Based on Prescribed Performance Control and Linear Active Disturbance Rejection Control

In this paper, we propose a decoupling control method based on prescribed performance control (PPC) and linear active disturbance rejection control (LADRC) to solve the problem of high uncertainty and strong coupling during high angle of attack flight. The angle of attack, sideslip angle and bank angle around the velocity are taken as the controlled variables, respectively, and three independent controllers are designed. The unmodeled part of the system, uncertainty and coupling terms are treated as total disturbance, and it is estimated by an extended state observer and then compensated in the control law. Improving transient and steady-state performance by using PPC. The controllers achieve rapid convergence of the tracking error. The simulation results show that the control method can track the control commands quickly and stably with good performance.