摘要
由于网络中数据包丢失的时变特性,网络控制系统的建模和控制器设计变得更加复杂。针对多包传输网络控制系统的包丢失问题,引入开关矩阵,利用容错的思想建立了多包传输网络控制系统的模型,更符合实际的包丢失特性。在此基础上,利用状态反馈自适应K调制的方法为该闭环网络控制系统设计了一种新型自适应控制器,使网络控制系统达到全局渐近稳定。与一般的控制器设计方法相比,该方法简单,并且能够根据包丢失的实时特性调整相应的控制器参数,从而提高要传输的信号的收敛速度,缩短稳定时间。最后仿真算例说明了该方法的有效性。
To the packet loss problems of networked control system with multi-packet transmission, the switching matrix is introduced to derive the model of the system based on the fault-tolerant method, which accord with the character of packet loss. An adaptive controller design method of networked control system is provided, based on the feedback adaptive K modulation. The networked control system is globally asymptotically stable. Comparing with the general method, this design method is very simple, can adjust the controller gains according to the real time characters of the packet loss, and can improve the convergence rate. A simulation experiment illustrates the effectiveness of the proposed method.
出处
《控制工程》
CSCD
北大核心
2010年第1期9-11,共3页
Control Engineering of China
基金
云南省应用基础研究基金资助项目(2009ZC051M)
关键词
网络控制系统
包丢失
自适K应调制
控制器设计
networked control system
packet loss
adaptive K modulation
controller design
