充液航天器姿态的自适应非线性动态逆控制  

ADAPTIVE NONLINEAR DYNAMIC INVERSION CONTROL FORSPACECRAFT ATTITUDE FILLED WITH FUEL

作　　者：祝乐梅[1] 岳宝增[1] 

机构地区：[1]北京理工大学宇航学院力学系,北京100081

出　　处：《动力学与控制学报》2011年第4期321-325,共5页Journal of Dynamics and Control

基　　金：国家自然科学基金资助项目(11072030);北京理工大学研究生科技创新活动专项计划项目(CX0402)~~

摘　　要：讨论了充液航天器大角度姿态机动自适应非线性动态逆控制设计.推导了航天器-液体晃动耦合系统动力学方程.采用单摆等效力学模型对液体燃料晃动进行动力学建模.由于充液航天器控制系统的强耦合非线性,故采用神经网络构造系统的自适应非线性动态逆控制器.通过实际算例对该控制器的跟综性能进行了测试,结果证明该自适应非线性动态逆控制器在包含液体晃动的情况下仍具有很好的跟综性能.A discussion was devoted to designing adaptive nonlinear dynamic inversion controllers. The equations of motion of the combined satellite/fuel system were derived, and the Rigid - liquid coupling system equations were constructed. Due to the strong coupling nonlinearity of spacecraft control system with fuel sloshing, neural networks were applied to create an adaptive NDI （Nonlinear Dynamic Inversion） controller. The results in the form of tracking performance for the adaptive NDI controller were shown using a model of SloshSat, which demonstrates that the proposed NDI controller with neural network is capable of excellent reference tracking in case of fuel shloshing.

关 键 词：动态逆 神经网络 自适应 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]