网络化控制系统改进事件触发机制与L_∞控制协同设计研究  

Co-design of improved event-triggered mechanism and L_∞ control for networked control systems

作　　者：李富强[1,2] 郜丽赛 张益维[1] Li Fuqiang;Gao Lisai;Zhang Yiwei(College of Sciences,Henan Agricultural University,Zhengzhou 450002,China;Shanghai Key Laboratory of Power Station Automation Technology,School of Mechatronics Engineering ＆ Automation,Shanghai University,Shanghai 200072,China;Zhengzhou Aerospace Electronic Technology Co.,LTD（693 Factory of 9th Institute of China Aerospace Science ＆ Technology Corporation）,Zhengzhou 450001,China)

机构地区：[1]河南农业大学理学院,郑州450002 [2]上海大学机电工程与自动化学院上海市电站自动化技术重点实验室,上海200072 [3]郑州航天电子技术有限公司(中国航天科技集团公司九院六九三厂),郑州450001

出　　处：《计算机应用研究》2018年第8期2492-2497,共6页Application Research of Computers

基　　金：国家自然科学基金资助项目(61703146);河南省高等学校重点科研项目(16B413002;15A510028);河南省科技攻关项目(172102210043;162102110108);河南农业大学科技创新基金资助项目(KJCX2016A09;KJCX2015A17;KJCX2015A19)

摘　　要：研究了网络诱导延时和外部干扰约束下,网络化控制系统的改进事件触发机制与L∞控制协同设计策略。为了克服相对(绝对)事件触发机制在系统接近(远离)平衡点运行时数据发送率较高的局限,提出了综合利用状态相关信息和状态无关信息的改进事件触发机制,其能够在系统整体运行期间获得较低数据发送率;然后,建立了同时刻画事件触发机制和网络诱导延时影响的闭环时滞系统模型,得到了系统最终有界稳定的充分条件,给出了事件触发机制与控制器的协同设计方法,比要求控制器预先给定的两步设计方法更方便。最后,仿真验证了所提方法的有效性。This paper studied co-design of improved event-triggered mechanism （ETM） and L ∞ control for networked control system with network-induced delays and external disturbances. To overcome drawbacks that transmission rate of relative ETM （absolute ETM） was high when system was running close to （far away from） the equilibrium point, the paper proposed an improved ETM by using both state-dependent and state-independent information, which could achieve low transmission rate du- ring the whole running time. Then, the paper established closed-loop time-delay system model, which characterized effects of ETM and network-induced delays in a unified framework. Furthermore, the paper derived sufficient conditions for ultimately bounded stability, and presented co-design scheme of the ETM and controller, which was more convenient than two-step design approach requiring controllers to be given a priori. Finally, examples confirm effectiveness of the proposed methods.

关 键 词：网络化控制系统 事件触发机制 网络诱导延时 协同设计 最终有界稳定 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]