V3I1P19

Robust Sliding Mode Controller Design for Surface-to-Air Missile Systems

Le Hieu Trung^1*

Abstract

This paper presents a robust sliding mode controller (SMC) design for surface-to-air missile (SAM) systems operating under model uncertainties, external disturbances, and target maneuvering conditions. Due to the highly nonlinear and time-varying dynamics of SAM systems, conventional linear control approaches often suffer from performance degradation and limited robustness. To address these challenges, a sliding mode control strategy is developed based on a nonlinear missile dynamic model. A suitable sliding surface is constructed to guarantee finite-time convergence of tracking errors, while a robust control law is synthesized to ensure system stability in the presence of bounded uncertainties and disturbances. Lyapunov-based stability analysis is employed to rigorously prove the robustness and asymptotic stability of the closed-loop system. Numerical simulations demonstrate that the proposed controller achieves fast tracking performance, strong disturbance rejection capability, and bounded control effort. The results confirm that the proposed robust sliding mode controller is an effective and practical solution for surface-to-air missile guidance and control applications.

Keywords:

Sliding mode control, surface-to-air missile, robust control, nonlinear systems, disturbance rejection.