摘要
针对带宽资源有限、存在系统外部干扰以及参数不确定性的问题,提出了一种基于事件触发的网络化系统非脆弱耗散控制方案。首先,在网络化控制系统(NCS)模型的基础上,提出了一种非周期采样的事件触发方案,并建立一个时滞闭环系统模型;然后,利用锯齿波的结构特点构造新型双边李雅普诺夫泛函;最后,结合杰森不等式、自由权矩阵、凸组合等方法,导出保证系统稳定性的充分条件,并计算出反馈控制器的增益。数值仿真结果证明,所设计的双边泛函比用单边泛函具有更小的保守性,事件触发机制与普通采样机制相比能够节约带宽,且所设计出的控制器具有可行性。
For the problems of limited bandwidth resources,the existence of external disturbance and parameter uncertainty,a non-fragile dissipative control scheme for event-triggered networked systems was proposed.Firstly,based on the Networked Control System(NCS)model,a non-periodic sampling event-triggered scheme was proposed,and a delay closed-loop system model was established.Then,a novel bilateral Lyapunov functional was constructed by using the structure characteristics of sawtooth wave.Finally,the sufficient conditions to ensure the stability of the system were derived by using methods such as Jensen inequality,free weight matrix and convex combination,and the gain of the feedback controller was calculated.The results of numerical simulation show that the proposed bilateral functional is less conservative than the unilateral functional,the event-triggered mechanism can save bandwidth compared with the common sampling mechanism,and the proposed controller is feasible.
作者
葛超
张亚欣
刘月
王红
GE Chao;ZHANG Yaxin;LIU Yue;WANG Hong(College of Artificial Intelligence,North China University of Science and Technology,Tangshan Hebei 063210,China;College of Electrical Engineering,North China University of Science and Technology,Tangshan Hebei 063210,China)
出处
《计算机应用》
CSCD
北大核心
2023年第2期615-621,共7页
journal of Computer Applications
基金
河北省自然科学基金资助项目(F2021209006)。
关键词
事件触发机制
网络化控制系统
非脆弱性
耗散性能
双边泛函
event-triggered mechanism
Networked Control System(NCS)
non-fragility
dissipative performance
two-sided functional
