考虑一类信息物理系统( CPS) 中传感器与控制器之间的通信信道遭受随机 DoS 攻击，建立了一种能同时反映随机 DoS 攻击和信道固有随机数据包丢失对通信质量影响 的统一随机干扰模型，采用基于观测器的输出反馈控制策略，研究了随机 DoS 攻击下 CPS 的保性能控制问题; 利用 Lyapunov 函数和线性矩阵不等式得到了实现 CPS 指数均方稳定 的充分条件，并将保性能控制器的设计转化为一个凸优化问题的求解． 理论推导和数值仿 真表明，文中提出的控制策略能够实现一类具有信道固有数据包丢失的 CPS 在 DoS 攻击 下的保性能控制． 

In the past decade, security issues of Cyber-Physical Systems (CPSs) have drawn enormous attention due to the wide spectrum of applications of CPSs and the serious impact of malicious cyber attacks on CPSs. In this paper, an observer-based feedback control method is used. The guaranteed cost control for a class of CPSs under stochastic DoS attacks on the channel between the sensor and the controller (S-C) is studied. A stochastic interference model is established within an unified framework to reflect the stochastic occuring behaviours of SINR-based DoS attacks and inherent packet dropouts. The guaranteed cost controller is designed to exponentially stabilize the CPS under stochastic DoS attacks in mean-square and the corresponding cost function is less than a specified upper bound. Simulation example is used to demonstrate the effectiveness of the guaranteed cost controll strategy.