Control Communication Co-Design for Wide Area Cyber-Physical Systems

IF 2 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS ACM Transactions on Cyber-Physical Systems Pub Date : 2020-08-17 DOI:10.1145/3418528
Laksh Bhatia, Ivana Tomić, A. Fu, Michael J. Breza, J. Mccann
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引用次数: 13

Abstract

Wide Area Cyber-Physical Systems (WA-CPSs) are a class of control systems that integrate low-powered sensors, heterogeneous actuators, and computer controllers into large infrastructure that span multi-kilometre distances. Current wireless communication technologies are incapable of meeting the communication requirements of range and bounded delays needed for the control of WA-CPSs. To solve this problem, we use a Control Communication Co-design approach for WA-CPSs, that we refer to as the C3 approach, to design a novel Low-Power Wide Area (LPWA) MAC protocol called Ctrl-MAC and its associated event-triggered controller that can guarantee the closed-loop stability of a WA-CPS. This is the first article to show that LPWA wireless communication technologies can support the control of WA-CPSs. LPWA technologies are designed to support one-way communication for monitoring and are not appropriate for control. We present this work using an example of a water distribution network application, which we evaluate both through a co-simulator (modeling both physical and cyber subsystems) and testbed deployments. Our evaluation demonstrates full control stability, with up to 50% better packet delivery ratios and 80% less average end-to-end delays when compared to a state-of-the-art LPWA technology. We also evaluate our scheme against an idealised, wired, centralised, control architecture, and show that the controller maintains stability and the overshoots remain within bounds.
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广域网络物理系统的控制通信协同设计
广域网络物理系统(wa - cps)是一类控制系统,它将低功率传感器、异构执行器和计算机控制器集成到跨越数公里距离的大型基础设施中。目前的无线通信技术还不能满足无线无线通信系统控制所需的范围和有界延迟的通信要求。为了解决这个问题,我们使用了一种用于WA-CPS的控制通信协同设计方法,我们称之为C3方法,设计了一种新的低功耗广域(LPWA) MAC协议,称为Ctrl-MAC及其相关的事件触发控制器,可以保证WA-CPS的闭环稳定性。这是第一篇展示LPWA无线通信技术可以支持wa - cps控制的文章。LPWA技术旨在支持用于监控的单向通信,而不适合用于控制。我们使用一个配水网络应用程序的示例来展示这项工作,我们通过联合模拟器(对物理和网络子系统建模)和测试平台部署来评估该应用程序。我们的评估显示了完全的控制稳定性,与最先进的LPWA技术相比,数据包传输率提高了50%,平均端到端延迟减少了80%。我们还根据理想化的、有线的、集中式的控制体系结构评估了我们的方案,并表明控制器保持稳定,超调保持在界限内。
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来源期刊
ACM Transactions on Cyber-Physical Systems
ACM Transactions on Cyber-Physical Systems COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS-
CiteScore
5.70
自引率
4.30%
发文量
40
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