Joint Optimization of Control Law and Power Consumption for Wireless Sensor and Actuator Networks

Wireless sensor and actuator networks (WSANs), as the promising technologies to realize efficient and energy-saving control, recently have been one of the main research focuses in academic fields as well as in control applications. In this paper, considering the network-induced delays, the joint design of optimal control strategy and power consumption for WSANs is addressed. First, the WSAN system with multiple transmission paths is modeled as a linear system and the joint optimization problem is formulated by using a quadratic cost function. Then, a two-step control scheme is presented to realize the joint design of control law and power consumption. In particular, the optimal control strategy for each given path is iteratively derived, and then the optimal transmission path is selected with the minimum system cost. Finally, numerical simulations in both generic control systems and power grid systems demonstrate the effectiveness of the proposed control scheme.