摘要
针对弹性高超声速飞行器跟踪控制问题进行研究,主要考虑状态约束、输入饱和、执行器故障等约束条件。首先,将弹性模态、外界干扰和模型参数不确定性归结为一类带有未知上界的系统干扰。其次,根据被动容错思想,针对速度和高度子系统分别设计抗饱和自适应容错控制器,通过引入双曲正切函数和新型屏障李雅普诺夫函数分别处理了输入饱和与状态约束问题。最后,闭环系统的最终一致有界性采用李雅普诺夫方法证明,并通过仿真验证了所提定理的正确性。
This paper studies and analyzes the tracking control problem of flexible hypersonic vehicle considering input saturation,actuator failure and state constraints.Firstly,the flexible modes,external disturbances and model parameter uncertainty are classified as a kind of system disturbance with unknown upper bound.Secondly,based on the passive fault tolerant ideas,the adaptive saturated fault-tolerant controller is designed for the velocity subsystem and altitude subsystem by use of the back-stepping method,adaptive technology and first-order filter,which can deal with the input saturation and state constraint problem by introducing the hyperbolic tangent function and new barrier Lyapunov function.Finally,the above controller is strictly proved by the Lyapunov function,which indicates that the system state is uniformly ultimately bounded,and the effectiveness of the proposed control scheme is alidated by simulation.
作者
陈峣
谭立国
魏毅寅
段广仁
CHEN Yao;TAN Li-guo;WEI Yi-yin;DUAN Guang-ren(Center for Control Theory and Guidance Technology,Harbin Institute of Technology,Harbin 150001,China;Research Center of Basic Space Science,Harbin Institute of Technology,Harbin 150001,China)
出处
《宇航学报》
CSCD
北大核心
2021年第7期850-861,共12页
Journal of Astronautics
基金
国家自然科学基金(61703126,6191101340),黑龙江省优秀青年基金(YQ2020F007)。
关键词
高超声速飞行器
容错控制
跟踪控制
输入饱和
Hypersonic vehicle
Fault-tolerant control
Tracking control
Input saturation
