Optimal tracking performance and design of networked control systems with packet dropouts

Optimal tracking performance and design of networked control systems with packet dropouts
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具有丢包的网络控制系统的最佳跟踪性能和设计

DOI:
10.1016/j.jfranklin.2013.06.019
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发表时间:
2013-12
期刊:
Journal of The Franklin Institute
影响因子:
--
通讯作者:
Fu-Shun
Fu-Shun
中科院分区:
其他
文献类型:
--
作者:
Xi-Sheng Zhan;Zhi-Hong Guan;Xian-He Zhang;Fu-Shun

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研究了单输入单输出(SISO)网络控制系统在具有丢包的通信信道上的最优跟踪问题。跟踪性能通过被控对象的输出与参考信号之间的误差信号的能量来衡量。结果表明,最优跟踪性能受非最小相位零点、不稳定极点、参考信号特性和丢包概率的约束,并得到了最优控制器。它还表明,当通信约束不存在时,最优跟踪性能降低到现有的正常跟踪性能的控制系统没有通信信道。结果表明,数据包丢失概率的通信信道可能从根本上限制控制系统的跟踪能力。给出了一些典型的例子和仿真结果来说明理论结果。
The optimal tracking problem for single-input–single-output (SISO) networked control system over a communication channel with packet dropouts is studied in this paper. The tracking performance is measured by the energy of the error signal between the output of the plant and the reference signal. It is shown that the optimal tracking performance is constrained by nonminimum phase zeros, unstable poles, the characteristics of the reference signal and packet dropout probability, and the optimal controller is obtained. It is also shown that when the communication constraint does not exist, the optimal tracking performance reduces to the existing normal tracking performance of the control system without a communication channel. The result shows how the packet dropouts probability of a communication channel may fundamentally constrain a control system's tracking ability. Some typical examples and simulations are given to illustrate the theoretical results.
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