关键词: 飞行器控制、导航技术, 挠性航天器, 姿态机动, 神经网络, 变结构控制

Abstract: An intelligent control algorithm combining variable structure control and neural network for attitude maneuvering of a threeaxis stabilized flexible spacecraft with dead zone nonlinear input induced by flywheel reaction was proposed. First, a variable structure output feedback control law was designed on the basis of nonlinear and lower order mode of the spacecraft dynamic model. Then an existing slide condition and closedloop asymptotical stability condition were given. Furthermore, network adaptive control technique was used to compensate system uncertainties and the stability analysis was conducted by using Lyapunov function. The introduction of intelligent control ensures the controller a good ability of selflearning and adaptation so that the influence of the uncertainty to the system was effectively reduced. Finally, the numerical simulations to the spacecraft were p

Key words: control and navigation technology of aerocraft, flexible spacecraft, attitude maneuvering, neural network, variable structure control