DoS攻击下信息物理系统的无模型H∞控制  

Model-free H∞ control for cyber-physical systems under DoS attacks

作　　者：金丹 吴麒 陈博[1,2] 俞立[1,2] JIN Dan;WU Qi;CHEN Bo;YU Li(College of Information Engineering,Zhejiang University of Technology,Hangzhou 310023,China;Institute of Cyberspace Security,Zhejiang University of Technology,Hangzhou 310023,China)

机构地区：[1]浙江工业大学信息工程学院,杭州310023 [2]浙江工业大学网络空间安全研究院,杭州310023

出　　处：《控制与决策》2022年第10期2565-2574,共10页Control and Decision

基　　金：国家自然科学基金项目(61973277,62073292);浙江省自然科学基金项目(LR20F030004)。

摘　　要：针对动态模型未知的信息物理系统在拒绝服务(DoS)攻击下的安全控制问题,提出无模型的H控制方法,其中DoS攻击具有代价约束且连续攻击次数有界. 首先,利用量测数据设计丢包情形下的Smith预估器对当前状态进行预测,并给出了量测反馈H控制器的结构形式;其次,利用博弈论将H控制问题转化为二人零和博弈问题,从而给出控制器增益的设计方法;进一步,基于Q-learning方法设计模型未知下的控制器增益在线求解算法实现系统的安全H控制;最后,通过雕刻机平台的仿真和实验验证所提出方法的有效性.This paper is concerned with the model-free Hcontrol for cyber-physical systems with unknown dynamic models in the presence of denial-of-service(DoS) attacks, where DoS attacks are considered to be cost-constrained, and the number of successive attacks is bounded. Firstly, a Smith predictor with dropouts is designed to predict the current state using the measurement data, and the structure of the measurement feedback Hcontroller is given. Secondly, the Hcontrol problem is transformed into a two-player zero-sum game, and then the designing method of the controller gain is presented using the game theory. Furthermore, an online Q-learning algorithm is designed to solve the controller gain with unknown model parameters, and the secure Hcontrol of the system is realized. Finally, an experiment on the plat of Carving is given to demonstrate the effectiveness of the proposed methods.

关 键 词：信息物理系统 DOS攻击 无模型 H∞控制 博弈论 数据驱动 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]