@inproceedings{21ea03c735f74c108473f18e404879f5,
title = "Decentralized Real-Time Safety Verification for Distributed Cyber-Physical Systems",
abstract = "Safety-critical distributed cyber-physical systems (CPSs) have been found in a wide range of applications. Notably, they have displayed a great deal of utility in intelligent transportation, where autonomous vehicles communicate and cooperate with each other via a high-speed communication network. Such systems require an ability to identify maneuvers in real-time that cause dangerous circumstances and ensure the implementation always meets safety-critical requirements. In this paper, we propose a real-time decentralized safety verification approach for a distributed multi-agent CPS with the underlying assumption that all agents are time-synchronized with a low degree of error. In the proposed approach, each agent periodically computes its local reachable set and exchanges this reachable set with the other agents with the goal of verifying the system safety. Our method, implemented in Java, takes advantages of the timing information and the reachable set information that are available in the exchanged messages to reason about the safety of the whole system in a decentralized manner. Any particular agent can also perform local safety verification tasks based on their local clocks by analyzing the messages it receives. We applied the proposed method to verify, in real-time, the safety properties of a group of quadcopters performing a distributed search mission.",
author = "Tran, {Hoang Dung} and Nguyen, {Luan Viet} and Patrick Musau and Weiming Xiang and Johnson, {Taylor T.}",
note = "Publisher Copyright: {\textcopyright} 2019, IFIP International Federation for Information Processing.; 39th IFIP WG 6.1 International Conference on Formal Techniques for Distributed Objects, Components, and Systems, FORTE 2019 held as part of the 14th International Federated Conference on Distributed Computing Techniques, DisCoTec 2019 ; Conference date: 17-06-2019 Through 21-06-2019",
year = "2019",
doi = "10.1007/978-3-030-21759-4_15",
language = "English (US)",
isbn = "9783030217587",
series = "Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)",
publisher = "Springer Verlag",
pages = "261--277",
editor = "P{\'e}rez, {Jorge A.} and Nobuko Yoshida",
booktitle = "Formal Techniques for Distributed Objects, Components, and Systems - 39th IFIP WG 6.1 International Conference, FORTE 2019, held as part of the 14th International Federated Conference on Distributed Computing Techniques, DisCoTec 2019, Proceedings",
}