New predictive PID controllers for packet dropouts in wireless networked control systems

Abstract

Four new predictive control algorithms are presented to compensate dropouts in wireless networked control systems. The control strategies are based on Model based predictive control (MBPC) with PID control structure. The control scheme is combined with a Kalman filter to achieve stability when the communication is subject to dropouts from sensor to controller. Notably, the proposed strategies are also applicable to compensate dropouts from controller to actuator. Several experiments using the TrueTime network simulator are provided to demonstrate the performance of the algorithms and their effectiveness.