Event-triggered dynamic output feedback control for networked control systems
Event-triggered dynamic output feedback control for networked control systems
复制标题
DOI：
10.1049/iet-cta.2013.0253
复制
发表时间：
2014-03
影响因子：
2.6
通讯作者：
Xianming Zhang;Q. Han
中科院分区：
文献类型：
--
作者：
Xianming Zhang;Q. Han
研究了基于动态输出反馈控制器（DOFC）的网络控制系统的事件触发控制问题。物理设备的输出测量信号被周期性地采样。一个基于输出的离散事件触发机制被引入到选择那些只有必要的采样数据包通过通信网络传输的控制器设计。在这种事件触发机制下，首先将所得到的闭环系统建模为具有区间时变时滞的线性系统。然后，利用Lyapunov-Krasovskii泛函方法建立了一个新的稳定性判据.基于此稳定性准则，一个新的充分条件推导出共同设计所需的自由度函数和事件触发参数。最后，以某卫星控制系统为例，验证了该方法的有效性.
This study is concerned with the event-triggered control for networked control systems via dynamic output feedback controllers (DOFCs). The output measurement signals of the physical plant are sampled periodically. An output-based discrete event-triggering mechanism is introduced to choose those only necessary sampled-data packets to be transmitted through a communication network for controller design. Under this event-triggering mechanism, the resultant closed-loop system is first modelled as a linear system with an interval time-varying delay. Then a novel stability criterion is established by employing the Lyapunov-Krasovskii functional approach. Based on this stability criterion, a new sufficient condition is derived to co-design both the desired DOFCs and the event-triggering parameters. Finally, a satellite control system is taken to show the effectiveness of the proposed method.