Switched feedback control for wireless networked control system with adaptive sampling rate

The main challenge in wireless networked control systems (WNCS) is the pernicious influence on control performance due to uncertainty of channel condition and limited communication bandwidth. An adaptive sampling rate scheduling method is proposed to allocate the limited network resource based on the requirement of QoP (quality of performance) and QoS (quality of service). The closed-loop system with adaptive sampling rate is modeled as a discrete switched system with temporary uncertain switching signal. A stability condition and switched feedback controller design method are given using the switched system theory. The final numerical example shows the effectiveness of our method.