基于干扰信号引起数据包丢失的网络控制系统的最优预见控制

摘要

This paper is concerned with the preview control problem for a class of packet loss of network control system caused by interference signal. First of all, we put signal in discrete time linear system, and establish the model according to the characteris-tics of the actual problem. The packet loss information of system are fully included in the new model, thus we thoroughly realize mathematical description of the interference signal packet loss problem in the system. Then we apply the preview control theory to the new model, add the external disturbance to the original state variables to construct a expansion system(or augmented sys-tem), introduce the performance index. We obtain the complete optimal control model and realize the preview control. Finally, we use a disturbance signal model for numerical simulation, verify the validity of the theory in this paper.%该文研究的是一类干扰信号引起的系统丢包的预见控制问题。首先把干扰信号项加入离散时间线性系统，并根据实际问题的特点重新建立模型。系统丢包信息完全包含在新的模型里，这样就彻底实现了干扰信号引起系统丢包问题的数学描述。然后对新的模型应用预见控制理论，我们将外部干扰加入到原状态变量中构造出一个扩大系统（或称增广系统），引入性能指标函数，即可获得完全的最优控制模型并实现最优预见控制。最后对一个有干扰信号的模型进行数值仿真，验证了本文理论的正确性。