Title :
Switched feedback control for wireless networked control system with adaptive sampling rate
Author :
Yan, Wang ; Zhicheng, Ji
Author_Institution :
Electr. Inst. of Autom., Jiangnan Univ., Wuxi, China
Abstract :
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.
Keywords :
adaptive control; bandwidth allocation; closed loop systems; control system synthesis; discrete systems; feedback; networked control systems; performance index; quality of service; radio networks; resource allocation; sampling methods; stability; time-varying systems; uncertain systems; QoP requirement; QoS requirement; WNCS; adaptive sampling rate scheduling method; channel condition uncertainty; closed-loop system; communication bandwidth; control performance; discrete switched system; limited network resource allocation; numerical example; quality of performance; quality of service; stability condition; switched feedback controller design; switched system theory; temporary uncertain switching signal; wireless networked control system; Bandwidth; Closed loop systems; Monitoring; Quality of service; Schedules; Switches; networked control system; schedule; switched control; wireless network;
Conference_Titel :
Control Conference (CCC), 2012 31st Chinese
Conference_Location :
Hefei
Print_ISBN :
978-1-4673-2581-3
