Wireless Sensor Network based Control System - Trade off between sensor power saving and control performance -

This paper is discussed on some new control methodologies for wireless sensor network based closed loop control systems. Such a system is required to save battery energy consumption, which will be achieved by saving communication speed. Then some new control strategies considering communication interval, which corresponds to sampling period of discrete control system, are considered here. The communication saved control problems is defined. Then, some heuristic control methods are proposed. One of them is based on the optimization of a cost function including control performance and communication penally. Two types of control optimization problems are defined, which correspond to state observer problem and state feedback control problem. These wireless sensor network conscious control methods will meet industrial requirements.