论文标题
合作网络控制系统中本地设计的隐私保护
Privacy Preservation by Local Design in Cooperative Networked Control Systems
论文作者
论文摘要
在本文中，我们研究了合作网络控制系统中的隐私保护问题，该系统为LQG控制任务工作。该系统由用户和服务器组成：用户拥有状态进程，服务器提供计算功能，并且用户使用服务器来计算其控制输入。为了启用服务器的计算，用户需要向服务器提供过程状态的测量。但是，用户将各州视为隐私，并希望服务器偏离状态估计的知识，而不是真实值。关于这一点，我们提出了一种新颖的隐私保护当地设计，该设计在服务器对国家估计与真实价值的估计中的知识造成了偏差。同时，我们提出了一个相关的隐私指标，以衡量偏差并相应地分析隐私绩效。此外，我们分析了由隐私方案引起的LQG控制性能的服务损失。最后，我们研究了隐私保存和LQG控制之间的性能权衡，其中提出的优化问题通过数值方法有效地解决。
In this paper, we study the privacy preservation problem in a cooperative networked control system working for the task of LQG control. The system consists of a user and a server: the user owns the state process, the server provides computation capability, and the user employs the server to compute control inputs for it. To enable the server's computation, the user needs to provide the measurements of the process states to the server. However, the user regards the states as privacy and wants the server to have deviated knowledge of the state estimates rather than the true value. Regarding that, we propose a novel local design of privacy preservation, which creates a deviation in the server's knowledge of the state estimates from the true value. Meanwhile, we propose an associated privacy metric to measure the deviation and analyze the privacy performance accordingly. Furthermore, we analyze the service loss in the LQG control performance caused by the privacy scheme. Finally, we study the performance trade-off between the privacy preservation and the LQG control, where the proposed optimization problems are solved by numerical methods efficiently.
