2024/11/12 by Joshua D. Farrington, Farrington, Joshua, Xinhua Wang +1
Engineering · #Adaptive Control of Nonlinear Systems #FOS: Electrical engineering #Guidance and Control Systems #Stability and Control of Uncertain Systems #Systems and Control (eess.SY) #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2411.07593
openalex publication_date 2024/11/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Air-to-air missiles are used on many modern military combat aircraft for self-defence. It is imperative for the pilots using the weapons that the missiles hit their target first time. The important goals for a missile control system to achieve are minimising the time constant, overshoot, and settling time of the missile dynamics. The combination of high angles of attack, time-varying mass, thrust, and centre of gravity, actuator delay, and signal noise create a highly non-linear dynamic system with many uncertainties that is extremely challenging to control. A robust control system based on saturated sliding mode control is proposed to overcome the time-varying parameters and non-linearities. A lag compensator is designed to overcome actuator delay. A second-order filter is selected to reduce high-frequency measurement noise. When combined, the proposed solutions can make the system stable despite the existence of changing mass, centre of gravity, thrust, and sensor noise. The system was evaluated for desired pitch angles of 0° to 90°. The time constant for the system stayed below 0.27s for all conditions, with satisfactory performance for both settling time and overshoot.