基于指数时变滑模的再入飞行器控制系统设计  

Design of attitude control law based on exponential time-varying sliding mode for re-entry vehicle

作　　者：王亮[1,2] 刘向东[1,2] 盛永智[1,2] 丛炳龙[1,2] 

机构地区：[1]北京理工大学自动化学院,北京100081 [2]北京理工大学复杂系统智能控制与决策重点实验室,北京100081

出　　处：《飞行力学》2012年第6期532-536,共5页Flight Dynamics

基　　金：国家重点基础研究发展计划(973计划)资助(2012CB720000);国家自然科学基金资助(61104153);高等学校博士学科点专项科研基金资助(20091101110025)

摘　　要：针对再入飞行器姿态控制过程中可能存在的参数不确定性以及外部扰动,设计了一种基于时变滑模理论的全局鲁棒控制器。首先,将再入飞行器的非线性模型进行反馈线性化处理,使得三通道进行解耦。然后,针对考虑了不确定性的再入飞行器线性化模型,运用时变滑模理论设计了一种基于指数时变滑模控制律的姿态控制系统,并运用Lyapunov理论证明了其稳定性,控制律中的参数通过求解二次型最优问题解得。最后,以某再入飞行器为例,验证了所设计控制律的有效性。A robust attitude controller based on TVSMC theory is proposed in this paper for re-entry vehicle flight control in the presence of the parametric uncertainties and external disturbances.Firstly,the feedback linearization（FBL） procedure is employed to the attitude nonlinear equations of the re-entry vehicle,which causes three-channel decoupled.Subsequently,an exponential TVSMC algorithm is designed and the stability of the closed-loop is verified by virtue of Lyapunov criteria.Especially,the control parameter is obtained by solving a quadratic optimization problem.Finally,simulation results verify the effectiveness of the proposed approach.

关 键 词：时变滑模控制 反馈线性化 再入飞行器 鲁棒性 

分 类 号：V448.22[航空宇航科学与技术—飞行器设计]