A self-triggered sampling scheme for networked control systems with state quantization
会议名称：《2015全国嵌入式仪表及系统技术会议》
会议日期：2015年
学科分类：08[工学] 0835[工学-软件工程] 0802[工学-机械工程] 080201[工学-机械制造及其自动化]
关 键 词：Networked control systems state quantization self-triggered sampling scheme
摘 要：This paper proposes a self-triggered sampling(STS) scheme for networked control systems(NCSs) with state quantization. A novel STS scheme is firstly provided for NCSs to save the limited communication resources while preserving the desired control performance. Compared with the conventional event-triggered sampling scheme, continuous state measurement is no longer needed. Then, a state error model for an NCS is constructed under consideration of the effect of state quantization and the networkinduced delay in a unified framework. By use of the proposed STS scheme and Lyapunov method, one can i) guaranteeing the solution of the system is globally uniformly ultimately bounded;ii) improving the energy efficiency in energy-constrained NCSs by reducing the number of released packets;and iii) ensuring that there exist lower and upper bounds of sampling interval, thereby avoiding the Zeno behavior and infinity sampling. Finally, an example is given to illustrate the effectiveness of the proposed self-triggered sampling scheme.