考虑量化不匹配问题的信息物理系统的安全控制  

Security control of cyber-physical systems considering quantization mismatch

作　　者：贾欣婷 郑柏超[1,2] 裴斌 Jia Xinting;Zheng Bochao;Pei Bin(School of Automation,Nanjing University of Information Science&Technology,Nanjing 210044,China;Jiangsu Collaborative Innovation Center on Atmospheric Environment&Equipment Technology,Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学自动化学院,南京210044 [2]南京信息工程大学江苏省大气环境与装备技术协同创新中心,南京210044

出　　处：《计算机应用研究》2020年第6期1808-1811,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(61573189,61403207);中国博士后科学基金资助项目(2015M580380)。

摘　　要：针对一类包含执行器攻击、外部干扰和编/解码器不匹配的信息物理系统(cyber-physical system,CPS),设计一种新型鲁棒控制器确保其安全稳定运行。控制器线性部分的增益由优化H2性能的线性矩阵不等式给出;控制器的非线性结构包含两部分,一部分用于消除外部干扰、量化误差,另一部分利用对未知执行器攻击参数的自适应估计来实现对攻击的补偿。最后,仿真算例结果表明控制器能保证闭环系统的一致最终有界性,说明了所提方法的有效性。This paper proposed a novel robust controller to ensure the security and stability for a class of cyber-physical systems subject to the effects including actuator attacks,external disturbances,and encoder/decoder mismatches. An optimized H2 performance in the form of linear matrix inequality solved the linear gain of the constructed controller. The nonlinear structure of the control included two parts: one aimed to eliminate the influence of external disturbance and quantization error,and the other part compensated the actuator attack by means of adaptive estimations of unknown actuator attack parameters. Finally,the simulation results show that the controller guarantees uniform ultimate boundedness of the closed-loop dynamical system,which shows the effectiveness of the proposed method.

关 键 词：信息物理系统 执行器攻击 编/解码器失配 一致最终有界 

分 类 号：TP273.3[自动化与计算机技术—检测技术与自动化装置]