摘要
针对受两种随机网络攻击影响的网络控制系统(Networked Control Systems,NCS),在分散事件触发机制下,考虑网络时延,通过选取适当的Lyapunov函数,得到了闭环NCS渐进稳定的充分条件,同时使系统具有混合H_(∞)及被动性能。其次,在稳定性判据下,给出控制器的设计方法。分散事件触发机制将传感器和事件触发器进行空间分布式设置,缓解了网络拥堵,攻击影响下混合H_(∞)及被动控制器的设计保证网络安全的同时增强了系统的抗干扰能力。最后,通过Matlab进行仿真,验证了所提方法的有效性。
Based on the decentralized event-triggered mechanism,for Networked Control Systems(NCS)affected by network-induced delay and two kinds of randomly occurred cyber-attacks,sufficient conditions of asymptotic stability and mixed H_(∞)and passive performance of the closed-loop NCS are obtained by selecting appropriate Lyapunov functions.Secondly,under the stability criterion,the design method of the controller is given.The sensors and event generators are spatially distributed in decentralized event-triggered mechanism to ease the network congestion.The design of mixed H_(∞)and passive controller subject to cyber-attacks ensures the network security and enhances the anti-interference performance of the system.Finally,the effectiveness of the proposed method is verified by Matlab simulation.
作者
韩晴
赵立英
白敬
HAN Qing;ZHAO Li-ying;BAI Jing(School of Mathematics and Physics,University of Science and Technology of Beijing,Beijing 100083,China)
出处
《计算技术与自动化》
2021年第2期1-7,共7页
Computing Technology and Automation
基金
国家重点研发计划重点专项(2017YFF0207400)。
关键词
混合H_(∞)及被动性能
随机网络攻击
分散事件触发
时延
mixed H_(∞)control and passive performance
stochastic cyber-attacks
decentralized event-trigger
time delay
