This article focuses on observer-based state feedback $H_{\infty }$ control for a jacket structure against DoS attacks and external wave loads. First, a networked model of the structure is formulated as a switched delay system, in which DoS attacks and network-induced delays are considered simultaneously. A matching switched observer is developed for estimating states of the networked jacket structure system. Then, some new sufficient conditions are provided for the observer-based networked $H_{\infty }$ controller for the resultant switched system. Finally, it is shown from several case studies that the provided mechanism can maintain desired performance of the jacket structure against attacks and wave loads. In addition, the developed control schemes can save the control cost significantly.

本文重点介绍基于观察者的状态反馈 $H_{\infty }$控制导管架结构抵御 DoS 攻击和外部波浪载荷。首先，该结构的网络模型被表述为切换延迟系统，其中同时考虑 DoS 攻击和网络引起的延迟。一个匹配的切换观测器被开发用于估计网络导管架结构系统的状态。然后，为基于观察者的网络化提供了一些新的充分条件。$H_{\infty }$最终切换系统的控制器。最后，几个案例研究表明，所提供的机制可以保持导管架结构对攻击和波浪载荷的预期性能。此外，所开发的控制方案可以显着节省控制成本。