Optimal state feedback control for wireless networked control systems with decentralised controllers

Abstract

In this study, the design of the optimal decentralised full-state-feedback controllers is derived for wireless networked control systems with network-induced delays. In particular, the authors formulate the optimal decentralised control problem as a non-cooperative linear quadratic game. Then, the optimal control strategy of each controller is obtained that is based on the current plant state and the last control strategies of decentralised controllers. The proposed optimal decentralised controllers reduce to the known controller under certain conditions. Moreover, the authors illustrate the application of the proposed decentralised state feedback control to load frequency control in power grid systems.

WLAN interference self‐optimization using som neural networks

“…To simulate the power efficiency, we randomly choose six APs as the maximum power at a time, which is showed in Figure . Then we do the total energy efficiency and let the network be more efficient and available .…”

“…To simulate the power efficiency, we randomly choose six APs as the maximum power at a time, which is showed in Figure 12. Then we do the total energy efficiency and let the network be more efficient and available [21][22][23][24][25]. Here, as step 1 is showed in Figure 13, we can see that in the situation of the maximum power, one AP cannot guarantee its cellar normal communication, there has to be some neighborhood APs to help its communication.…”

Optimal linear quadratic control for wireless sensor and actuator networks with random delays and packet dropouts

“…6,7 Taking the delay into consideration, not only the plant state but also the previous control signals should be used in the design of the optimal controller. 4,5,20,21 In this article, we focus on the general case in which both the stochastic network-induced delays and the packet dropouts are considered, and the optimal control problem is investigated for a linear WSAN with event-driven relay nodes. Using the quadratic cost function, the optimal solution is derived as a function that is linear with the current plant state and all past control signals, and the corresponding suboptimal solution is also proposed.…”

Decentralised Stabilisation of Nonlinear Time Delay Interconnected Systems

“…Much existing work considers interconnected systems with either linear isolated subsystems or linear interconnections, and/or it is required that the nonlinearity or uncertainties satisfy linear growth conditions (Mahmoud, 2009;Ye et al, 2012;Wang et al, 2015). Time delay is another important factor which brings additional complexity to the study of large scale interconnected systems (Yan et al, 2013).…”