...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Automatic Control >Actuator Security Indices Based on Perfect Undetectability: Computation, Robustness, and Sensor Placement
【24h】

Actuator Security Indices Based on Perfect Undetectability: Computation, Robustness, and Sensor Placement

机译：基于完美未检测性的执行器安全指标：计算，鲁棒性和传感器放置

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

We propose an actuator security index that can be used to localize and protect vulnerable actuators in a networked control system. Particularly, the security index of an actuator equals to the minimum number of sensors and actuators that need to be compromised, such that a perfectly undetectable attack against that actuator can be conducted. We derive a method for computing the index in small-scale systems and show that the index can potentially be increased by placing additional sensors. The difficulties that appear once the system is of a large-scale are then outlined: The index is NP-hard to compute, sensitive with respect to system variations, and based on the assumption that the attacker knows the entire system model. To overcome these difficulties, a robust security index is introduced. The robust index can characterize actuators vulnerable in any system realization, can be calculated in polynomial time, and can be related to limited model knowledge attackers. Additionally, we analyze two sensor placement problems with the objective to increase the robust indices. We show that the problems have submodular structures, so their suboptimal solutions with performance guarantees can be computed in polynomial time. Finally, we illustrate the theoretical developments through examples.
机译：我们提出了一种执行器安全索引，可用于在网络控制系统中定位和保护易受攻击的执行器。特别地，致动器的安全指数等于需要损害的最小传感器和致动器的最小数量，使得可以进行对该致动器的完全无法检测的攻击。我们推出了一种用于计算小规模系统中的索引的方法，并显示通过放置额外的传感器可能会增加索引。然后概述了系统一旦大规模出现的困难：索引是NP - 难以计算，相对于系统变体敏感，并且基于攻击者知道整个系统模型的假设。为了克服这些困难，介绍了强大的安全指标。稳健的索引可以在任何系统实现中表征易受攻击的执行器，可以在多项式时间中计算，并且可以与有限的模型知识攻击者有关。此外，我们分析了两个传感器放置问题，目的是增加强大的指标。我们表明问题有子模块结构，因此可以在多项式时间内计算具有性能保证的次优解决方案。最后，我们通过示例说明了理论发展。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号