MATLAB Implementation of Sliding Mode Controller

A sliding mode controller is a robust control technique characterized by its ability to maintain system stability under disturbances and uncertainties. This widely adopted controller design can be applied to various types of dynamic systems. The implementation typically involves creating M-files for algorithm development and Simulink models for system simulation, providing users with practical reference for real-world applications. The core algorithm involves designing a sliding surface and implementing switching control laws that drive system trajectories toward this surface. Key functions include calculating the sliding surface variable, determining control gains, and implementing the discontinuous control law that ensures system robustness. Further optimizations can be performed through parameter tuning, adaptive gain scheduling, and enhanced feedback design to improve transient response and reduce chattering effects. Through this comprehensive implementation approach, users can gain deeper understanding of sliding mode control principles, including stability analysis using Lyapunov methods, and practical techniques for applying these controllers to real-world systems.