Application of adaptive fuzzy sliding mode control to rocket coupling system

An adaptive fuzzy sliding mode control approach is proposed for electromechanical coupling property of a rocket position servo system. The equivalent controller is substituted by an adaptive fuzzy system based on the switching function and its change rate, so that the sliding mode control law is not dependent on accurate mathematical model, and the switch gain is adjusted by the fuzzy rules to reduce chattering. Both simulation analysis and experimental results show that the proposed approach can guarantee the static and dynamic performance, reduces chattering induced by variable structure control, and possesses a strong robustness to parameters perturbation. The results can provide a reference for improving the theoretical structure and practical application of controllers.