Optimal linear quadratic control for wireless sensor and actuator networks with random delays and packet dropouts
Optimal linear quadratic control for wireless sensor and actuator networks with random delays and packet dropouts
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DOI：
10.1177/1550147718779560
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发表时间：
2018-06
影响因子：
2.3
通讯作者：
Zhuwei Wang;Lihan Liu;Chao Fang;Xiaodong Wang;Pengbo Si;Hong Wu
中科院分区：
文献类型：
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作者：
Zhuwei Wang;Lihan Liu;Chao Fang;Xiaodong Wang;Pengbo Si;Hong Wu
研究了具有随机网络诱导时延和丢包的无线传感器和执行器网络的最优线性二次型控制问题。考虑事件驱动的中继节点，得到最优解，这是一个函数的当前对象的状态和所有过去的控制信号。结果表明，最优控制律是相同的控制器放置的所有位置。由于在传感器处可获得完美的对象状态信息，因此最优控制器应与传感器配置在一起。此外，还讨论了系统状态噪声和次优解等问题。通过在电网负荷频率控制系统中的应用，研究了该方案的性能。
In this article, the optimal linear quadratic control problem is considered for the wireless sensor and actuator network with stochastic network-induced delays and packet dropouts. Considering the event-driven relay nodes, the optimal solution is obtained, which is a function of the current plant state and all past control signals. It is shown that the optimal control law is the same for all locations of the controller placement. Since the perfect plant state information is available at the sensor, the optimal controller should be collocated with the sensor. In addition, some issues such as the plant state noise and suboptimal solution are also discussed. The performance of the proposed scheme is investigated by an application of the load frequency control system in power grid.