研究了基于网络控制的航空器时变时滞横向动力学系统的容错控制问题。利用Lyapunov稳定性方法和LMI技术,综合网络的特点采用鲁棒完整性方法设计了针对执行器失效的客错控制器。首先给出了航空器横向动力学系统的时滞线性化一般模型,考虑到网络控制系统的运行特点以及网络中的诱导时延和数据包丢失现象,采用一种分段常值的控制器,设计了使系统对执行器失效故障具有容错性能的控制器。进行了仿真研究,仿真结果说明容错控制器作用下当出现执行器故障时系统仍可保持较好的性能,验证了提出的设计方法的有效性.
The fault-tolerant control problem of the spacecraft lateral dynamics system with time-varying delay states based on networked control is studied. Combining with the characteristics of the networked control system ( NCS), a controller to stabilize the system with actuator failure is proposed based on robust integrity method by using Lyapunov stabilization theory together with the LMI technique. The spacecraft dynamic system is modeled as a linearized plant with time-varying state delay. Then considering the characteristics of the NCS induced delay and the data dropout, a piecewise constant controller is adopted to design the controller against the actuator failure. Tile simulation results show that the system performance can be guaranteed well under the proposed fault tolerant controller when the actuator failure appears.