Research of adaptive backstepping sliding mode controller based on fuzzy disturbance observer

Friction and other external disturbances, uncertainty model information and parameter variation are negative to the flight simulator system. In order to solve this problem, an Adaptive Backstepping Sliding Mode Controller (ABSMC) based on Fuzzy disturbance observer (Fdo) was proposed. On the basis of the compensation for the external disturbance and uncertainty information, starting from the stability, the controller was obtained gradually by the adaptive estimation to the uncertainty upper bound. With the simulation of one flight simulator, it can be seen that the proposed control scheme can obtain better tracking performance and more robustness against external disturbances, uncertainty model information and parameter variation to the simple Sliding Mode Controller (SMC).