Adaptive Fuzzy Sliding Mode Control for Missile Electro-Hydraulic Servo Mechanism Based on Variable Universe

A design scheme of variable universe adaptive fuzzy sliding mode control was proposed for the tracking control problem of missile electro-hydraulic servo mechanism in this paper.By adjusting the universes of input variables and the membership fuzzy controller of conclusion part in rules on-line,a variable universe adaptive fuzzy controller was introduced to approximate the optimal controller,which would make that the controller could be designed without accurate model.The fuzzy sliding mode compensating controller was designed for compensating the approximation errors and attenuating the external disturbance.The simulation results showed that the validity of this scheme was approved.