Disturbance Observer Based Robust Backstepping Control for Flight Simulator

The flight simulator is one kind of servo system with uncertainties and disturbances. To obtain high performance and good robustness for the flight simulator, we present a robust backstepping controller based on a disturbance observer. Firstly, the design procedure of the robust backstepping controller is described and correlative problems are proposed. Secondly, the principle and the design process of disturbance observer are analyzed and expatriated respectively. Finally, simulation results on the flight simulator show that the disturbance observer can compensate external disturbances including system input and output disturbance and the system performance can be improved. Therefore both robustness and high performance of the flight simulator are achieved. It is an applied technology for the control of servo system, such as the flight simulator