中文摘要：

针对近空间飞行器的执行器故障，在考虑控制输入约束情况下，本文提出了一种基于模型预测控制思想的容错控制策略。该方法主要是结合线性状态反馈控制与非线性模型预测控制的优点，构成容错控制律，然后通过自适应观测器的方法进行故障估计，并将得到的故障信息反馈到系统，能够保证闭环系统的稳定性，而且在系统发生执行器故障的情况下能够跟踪给定的指令。最后在Matlab中针对X-33模型进行仿真，验证该容错控制算法的有效性。

英文摘要：

A fault-tolerant control scheme is proposed for near space vehicle to deal with actuator fault ac- cording to the consideration of control input constraints. The the advantages of the linear state feedback con- trol is combined with the nonlinear model predictive control to constitute a fault-tolerant control law in the control scheme, and then the adaptive observer is used to obtain the fault estimation and the fault informa- tion for feedback to the system. Moreover, the control scheme can guarantee the stability of closed-loop sys- tem and is capable of tracking command given in the case of actuator fault. Finally, the simulation results of a X-33 model verify the effectiveness of the proposed fault-tolerant control scheme.