Research On Stabilization And Control Of Cyber-Physical Systems Under DoS Jamming Attacks

With the rapid development of computation,communication and control technology,Cyber-Physical Systems(CPSs)which integrate physical space,cyber space and social space emerge and are widely applied to various important infrastructures,and have of great significance in national security and social stability sustaining,economic promotion and life quality improvement.CPS employs an open access communication method to adapt for more complicated working environments and arduous tasks.In this case,global CPS security incidents caused by malicious network attacks occur frequently in recent time,causing tremendous negative impacts on society and economic losses.Great attentions have been paid to network attack caused CPS security issues by government,academia and industry in the scope of the whole world.Efforts have been made to solve these problems as well.As one of the Denial-of-Service(DoS)attacks,DoS jamming attacks can deteriorate the communication channel quality by jamming the network,and then affect the operation safety of CPS.Despite of that the CPS security issues caused by DoS jamming attacks have been deeply studied,and a lot of theoretical results have been researched,there are still many to be further explored.To solve the security issues of CPS under DoS jamming attacks further,this paper aims to establish attack strategy models of the DoS jammer and the attack tolerance mechanism,after considering the inherent factors of communication channel.Theoretical analyses combined with numerical simulations were utilized based on Markov jump system theory and stochastic system theory to investigate the stability and corresponding controller design of CPS under DoS jamming attacks.The main work is summarized as follows:(1)To address the DoS jamming attack issue suffered by the measurement channel in CPS,a periodic attack strategy model was proposed to study the state and output feedback stabilization of the CPS by considering the energy limitation of the DoS jammer and the inherent factors of the channel.The sufficient conditions which ensure the stability of the CPS and the design algorithm of the controller were deduced theoretically,and the correctness and effectiveness of the corresponding control strategies were verified by numerical simulations.(2)To address the DoS jamming attacks issue suffered by the measurement channel in CPS,the state and output feedback guaranteed cost control of the CPS under periodic DoS jamming attacks were studied by considering the energy limitation of the DoS jammer and the inherent factors of the channel.The correctness and effectiveness of the corresponding control strategies were verified by theoretical derivation and numerical simulations.(3)For two situations that the sensor which in CPS has a limited energy budget and the measurement channel in the CPS encounters stochastic DoS jamming attacks,and both the measurement and control channels in the CPS encounter DoS jamming attacks,the guaranteed cost control of the CPS under DoS jamming attacks were studied by proposing the DoS jammer's attack strategy model,considering the energy limitation of the DoS jammer and the inherent factors of the channels.The sufficient conditions which ensure the stability of the CPS and the design algorithm of the controllers were deduced theoretically,and the correctness and effectiveness of the corresponding guaranteed cost control strategies were verified by numerical simulations.(4)For three situations that the measurement channel in CPS encounters periodic DoS jamming attacks,the measurement and control channels in the CPS which employ time triggering mechanism encounter DoS jamming attacks,the measurement and control channels in the CPS which employ hybrid triggering mechanism encounter DoS jamming attacks,H? control of the CPS under DoS jamming attacks were studied by proposing the DoS jammer's attack strategy models,considering the energy limitation of the DoS jammer and the inherent factors of the channels.The sufficient conditions which ensure the stability of the CPS and the design algorithm of the controllers were deduced theoretically,and the correctness and effectiveness of the corresponding H? control strategies were verified by numerical simulations.