Topic
Cyber-physical system
About: Cyber-physical system is a research topic. Over the lifetime, 11096 publications have been published within this topic receiving 162489 citations. The topic is also known as: CPS.
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13 Apr 2010
TL;DR: This paper proposes a cyber-physical codesign approach to structural health monitoring based on wireless sensor networks that closely integrates flexibility- based damage localization methods that allow a tradeoff between the number of sensors and the resolution of damage localization, and an energy-efficient, multilevel computing architecture specifically designed to leverage the multiresolution feature of the flexibility-based approach.
Abstract: Our deteriorating civil infrastructure faces the critical challenge of long-term structural health monitoring for damage detection and localization. In contrast to existing research that often separates the designs of wireless sensor networks and structural engineering algorithms, this paper proposes a cyber-physical co-design approach to structural health monitoring based on wireless sensor networks. Our approach closely integrates (1) flexibility-based damage localization methods that allow a tradeoff between the number of sensors and the resolution of damage localization, and (2) an energy-efficient, multi-level computing architecture specifically designed to leverage the multi-resolution feature of the flexibility-based approach. The proposed approach has been implemented on the Intel Imote2 platform. Experiments on a physical beam and simulations of a truss structure demonstrate the system's efficacy in damage localization and energy efficiency.
74 citations
26 Oct 2015
TL;DR: An investigation of attacks against the manufacturing message specification of IEC 61850, which is expected to become one of the most widely used communication services in Smart Grids, is addressed to help understand the potential for attacks, and to aid the development and testing of cyber security solutions.
Abstract: Cyber-attacks against Smart Grids have been found in the real world. Malware such as Havex and BlackEnergy have been found targeting industrial control systems (ICS) and researchers have shown that cyber-attacks can exploit vulnerabilities in widely used Smart Grid communication standards. This paper addresses a deep investigation of attacks against the manufacturing message specification of IEC 61850, which is expected to become one of the most widely used communication services in Smart Grids. We investigate how an attacker can build a custom tool to execute man-in-the-middle attacks, manipulate data, and affect the physical system. Attack capabilities are demonstrated based on NESCOR scenarios to make it possible to thoroughly test these scenarios in a real system. The goal is to help understand the potential for such attacks, and to aid the development and testing of cyber security solutions. An attack use-case is presented that focuses on the standard for power utility automation, IEC 61850 in the context of inverter-based distributed energy resource devices; especially photovoltaics (PV) generators.
74 citations
TL;DR: In this paper, a Deep Q-Network (DQN) is used to solve the problem of remote state estimation of geographically distributed and remote physical processes, where the authors formulate an associated Markov decision process (MDP) to address this scheduling problem.
74 citations
TL;DR: The resilient control system is modelled as a multi-stage hierarchical game with a corresponding hierarchy of decisions made at cyber and physical layer, respectively, which demonstrates its effectiveness under denial-of-service attack launched by the intelligent attacker.
Abstract: This paper is concerned with the resilient control under denial-of-service attack launched by the intelligent attacker. The resilient control system is modelled as a multi-stage hierarchical game with a corresponding hierarchy of decisions made at cyber and physical layer, respectively. Specifically, the interaction in the cyber layer between different security agents is modelled as a static infinite Stackelberg game, while in the underlying physical layer the full-information H∞ minimax control with package drops is modelled as a different Stackelberg game. Both games are solved sequentially, which is consistent with the actual situations. Finally, the proposed method is applied to the load frequency control of the power system, which demonstrates its effectiveness.
74 citations
TL;DR: This paper considers the interplay between form and function of industrial components, at the light of their cyber-physical formulation, and addresses the system-level (de)composability and interaction design challenges that arise from the integration of modular CPPSs.
Abstract: The concept of Industry 4.0, or the Fourth Industrial Revolution, has the potential for radically increased system reconfigurability and flexibility. At its core, the notion of cyber-physical system, as the new generation of embedded systems with advanced artificial intelligence and improved communication capabilities, is seen as the key enabling concept that will render production activities more sustainable. The cyber-physical conceptualization dramatically reduces the integration effort by virtually eliminating the need, time, and cost for reprogramming. However, there are still important challenges that need to be addressed before one can start to design cyber-physical production systems consistently. These intertwine and are not as easily solvable as the popular science descriptions may suggest. This paper brings them forward and develops a critical comparative analysis between today's automation solutions and their potential cyber-physical counterparts. The analysis considers the technical and conceptual challenges that are included in the process of migrating today's, mostly bespoke, automation solutions to highly modularized, dynamic, and interactive cyber-physical production systems (CPPSs). In this context, this paper considers the interplay between form and function of industrial components, at the light of their cyber-physical formulation. At the same time, it addresses the system-level (de)composability and interaction design challenges that arise from the integration of modular CPPSs.
74 citations