论文标题
在线状态估算对沟通延迟和损失的离散事件系统中主管合成的估计
Online State Estimation for Supervisor Synthesis in Discrete-Event Systems with Communication Delays and Losses
论文作者
论文摘要
在网络离散事件系统（DESS）的背景下，工厂与主管之间以及主管和执行器之间的沟通延迟和损失存在。在本文中，我们首先引入了一个新的框架，用于对网络迪斯的监督控制。在介绍的框架下，我们解决了与沟通延迟和损失的网络DESS合成的状态估计问题。估计算法考虑了对系统施加的控件的影响。此外，估计算法基于此刻可用的控制决策，并且所有未来的控制决策都被认为是不可知的。定义了两个用于跟踪观察延迟和损失的“观察通道配置”的概念，以及用于跟踪控制延迟和损失的“控制通道配置”。然后，我们引入了一种在线方法，以进行对受控系统的状态估算。与现有方法相比，介绍框架下的拟议方法可以更准确地估计受控系统的状态。作为提出方法的应用，我们最终表明，现有方法可以轻松地应用于最大程度允许且安全的网络主管。
In the context of networked discrete-event systems (DESs), communication delays and losses exist between the plant and the supervisor for observation and between the supervisor and the actuator for control. In this paper, we first introduce a new framework for supervisory control of networked DESs. Under the introduced framework, we address the state estimation problem for supervisor synthesis of networked DESs with both communication delays and losses. The estimation algorithm considers the effect of the controls imposed on the system. Additionally, the estimation algorithm is based on the control decisions available up to the moment, and all the future control decisions are assumed to be unknowable. Two notions, called "observation channel configuration" for tracking observation delays and losses and "control channel configuration" for tracking control delays and losses, are defined. Then, we introduce an online approach for state estimation of the controlled system. Compared with the existing approach, the proposed approach under the introduced framework can estimate the state of the controlled system more accurately. As an application of the proposed approach, we finally show that the existing methods can be easily applied to synthesize maximally permissible and safe networked supervisors.
