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Terminal Time-Constrained Nonlinear Interception Strategies Against Maneuvering Targets

JOURNAL OF GUIDANCE CONTROL AND DYNAMICS 2021年第1期44卷 200-209页

作者： Kumar, Shashi Ranjan Mukherjee, Dwaipayan Indian Inst Technol Intelligent Syst & Control Lab Dept Aerosp Engn Mumbai 400076 Maharashtra India Indian Inst Technol Dept Elect Engn Mumbai 400076 Maharashtra India

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Blockchain and cooperative game theory for peer-to-peer energy trading in smart grids

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INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS 2023年第1期151卷

作者： Moniruzzaman, Md Yassine, Abdulsalam Benlamri, Rachid Lakehead Univ Dept Elect & Comp Engn 55 Oliver Rd Thunder Bay ON P7B 5E1 Canada Lakehead Univ Dept Software Engn 55 Oliver Rd Thunder Bay ON P7B 5E1 Canada

Peer-to-peer energy trading allows smart grid-connected parties to trade renewable energy among each other. It is widely considered as a scheme to mitigate the supply-demand imbalances during peak-hour. However, the main challenge of such a scheme is the lack of secure, efficient, and transparent systems that foster economic incentives for users. This paper proposes a novel system that combines cooperative game theory and blockchain technology to stimulate users to maximize their profit and trade energy securely. In our model, users can store renewable energy credits as assets in the blockchain and trade them with others. We also develop a modified version of Proof of Energy Generation (PoEG) by including distribution line loss as a consensus mechanism among blockchain energy trading members. Then, we propose a coalition formation algorithm based on PoEG protocol and optimization technique to determine the winning coalition as block miners. The system is validated through comprehensive theoretical analysis and simulation experiments utilizing a standard IEEE 14-bus system and a real-life dataset (Ausgrid). Also, the developed model is implemented on the Avalanche blockchain platform. The test results show that the proposed scheme improves prosumers' financial benefits by 6.5% in terms of energy savings compared to the baseline model. The experiments demonstrate the effectiveness, capabilities, and robustness of the proposed system.

关键词： Blockchain consensus algorithm Cooperative game theory Peer-to-peer energy trading Smart grid

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Distributed Detection of Malicious Attacks on consensus algorithms with Applications in Power Networks

Distributed Detection of Malicious Attacks on Consensus Algo...

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International Conference on Control, Decision and Information Technologies (CoDIT)

作者： Sourav Patel Vivek Khatana Govind Saraswat Murti V. Salapaka University of Minnesota Minneapolis USA National Renewable Energy Laboratory Golden CO USA

ISBN: (数字)9781728159539

ISBN: (纸本)9781728159546

consensus-based distributed algorithms are well suited for coordination among agents in a cyber-physical system. These distributed schemes, however, suffer from their vulnerability to cyber attacks that are aimed at manipulating data and control ow. In this article, we present a novel distributed method for detecting the presence of such intrusions for a distributed multi-agent system following ratio consensus. We employ a Max-Min protocol to develop low cost, easy to implement detection strategies where each participating node detects the intrusion independently, eliminating the need for a trusted certifying agent in the network. The effectiveness of the detection method is demonstrated by numerical simulations on a 1000 node network to demonstrate the efficacy and simplicity of implementation.

关键词： Directed graphs Cyber-physical systems consensus algorithm Government Distributed algorithms Topology Multi-agent systems

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The Security Ingredients for Correct and Byzantine Fault-tolerant Blockchain consensus algorithms

The Security Ingredients for Correct and Byzantine Fault-tol...

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International Symposium on Networks, Computers and Communications (ISNCC)

作者： Amani Altarawneh Anthony Skjellum SimCenter & Computer Science and Engineering University of Tennessee at Chattanooga Chattanooga TN USA

ISBN: (数字)9781728156286

ISBN: (纸本)9781728156293

The blockchain technology revolution and the use of blockchains in various applications have resulted in many companies and programmers developing and customizing specific fit-for-purpose consensus algorithms. Security and performance are determined by the chosen consensus algorithm; hence, the reliability and security of these algorithms must be assured and tested, which requires an understanding of all the security assumptions that make such algorithms correct and byzantine *** paper studies the "security ingredients" that enable a given consensus algorithm to achieve safety, liveness, and byzantine fault tolerance (BFT) in both permissioned and permissionless blockchain systems. The key contributions of this paper are the organization of these requirements and a new taxonomy that describes the requirements for security. The CAP Theorem is utilized to explain important tradeoffs between consistency and availability in consensus algorithm design, which are crucial depending on the specific application of a given algorithm. This topic has also been explored previously by De Angelis. However, this paper expands that prior explanation and dilemma of consistency vs. availability and then combines this with Buterin's Trilemma to complete the overall exposition of tradeoffs.

关键词： Blockchain consensus algorithm Security Peer-to-peer computing Fault tolerant systems Fault tolerance Safety

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Trust Model for Effective consensus in Blockchain

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EAI ENDORSED TRANSACTIONS ON SCALABLE INFORMATION SYSTEMS 2022年第5期9卷

作者： Shalini, R. Manoharan, R. Pondicherry Engn Coll Dept Comp Sci & Engn Pondicherry India Pondicherry Engn Coll Comp Sci & Engn Pondicherry India

Blockchain technology is a revolution started as a new economy with an alternative currency namely Bitcoin. Besides the economical aspect, the technological capabilities of Blockchain such as distributed computing, record keeping, irrecoverability of transactions, reliability and etc., are harnessed by variety of real-world applications. Blockchain is a rising pool of records known as blocks linked using security procedure. It is typically managed by a group of nodes in a distributed network technology which integrates technologies such as distributed ledger, security and consensus algorithm to ensure reliability and immutability. In Blockchain, the access privileges are determined by a set of nodes called miners, which run the consensus algorithm mechanism to ensure the trust and robustness of the miners and eliminate the malicious miners which runs the consensus algorithm. Therefore, this paper proposes a trust model with an objective of eliminating untrusted nodes from the mining process to enhance the reliability and security of the Blockchain. Further, the proposed trust model is suitably analysed for transaction rate, efficiency and scalability with Hyper Ledger framework to ensure the robustness.

关键词： Trust Model Blockchain consensus algorithm BFT Scalability

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A randomized algorithm based approach to fault detection for uncertain systems subject to deception attack

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Journal of the Franklin Institute 2024年第18期361卷

作者： Zhao, Zhen Liu, Peter Xiaoping Gao, Jinfeng School of Mechanical Engineering Zhejiang Sci-Tech University Hangzhou310018 China School of Information Science and Engineering Zhejiang Sci-Tech University Hangzhou310018 China Department of Systems and Computer Engineering Carleton University OttawaON K1S 5B6 Canada

This paper presents a fault detection strategy for discrete uncertain systems subject to deception attack based on the probabilistic framework. Probabilistic parameter models are utilized for characterizing model uncertainties, multiplicative faults and additive faults. An observer-based fault detection filter is constructed to generate fault information under deception attack. A randomized algorithm based approach is developed to determine the observer gain and threshold for attaining a trade-off between the false alarm rate (FAR) and fault detection rate (FDR). Simulation of an unmanned surface vehicle (USV) system and comparison against existing work are performed to illustrate the effectiveness of the proposed scheme. © 2024

关键词： consensus algorithm

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consensus Tracking Control of Switched Stochastic Nonlinear Multiagent Systems via Event-Triggered Strategy

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IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS 2020年第3期31卷 1036-1045页

作者： Zou, Wencheng Shi, Peng Xiang, Zhengrong Shi, Yan Nanjing Univ Sci & Technol Sch Automat Nanjing 210094 Peoples R China Univ Adelaide Sch Elect & Elect Engn Adelaide SA 5005 Australia Victoria Univ Coll Engn & Sci Melbourne Vic 8001 Australia Tokai Univ Grad Sch Sci & Technol Kumamoto 8628652 Japan

In this paper, the consensus tracking problem is investigated for a class of continuous switched stochastic nonlinear multiagent systems with an event-triggered control strategy. For continuous stochastic multiagent systems via event-triggered protocols, it is rather difficult to avoid the Zeno behavior by the existing methods. Thus, we propose a new protocol design framework for the underlying systems. It is proven that follower agents can almost surely track the given leader signal with bounded errors and no agent exhibits the Zeno behavior by the given control scheme. Finally, two numerical examples are given to illustrate the effectiveness and advantages of the new design techniques.

关键词： Multi-agent systems Switches Protocols consensus algorithm Nonlinear dynamical systems Learning systems consensus tracking event-triggered control multiagent systems stochastic systems switched systems

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Robust consensus-Based Distributed Energy Management for Microgrids With Packet Losses Tolerance

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IEEE TRANSACTIONS ON SMART GRID 2020年第1期11卷 281-290页

作者： Duan, Jie Chow, Mo-Yuen North Carolina State Univ Dept Elect & Comp Engn Adv Diag Automat & Control Lab Raleigh NC 27606 USA

The well-developed consensus algorithm provides an elegant distributed way for solving the energy management problem. The convergence of the consensus-based distributed approach depends on the reliable exchange of the information with neighbors. This assumption might be violated in practice due to inevitable and random packet losses. In this paper, the impact of packet losses on the consensus-based distributed approach is analyzed. We show the iterative calculation converges to an incorrect solution in the presence of packet losses, where the power supply could not meet with the demand. More importantly, we find the error in the final result is accumulated over every packet loss event, and we identify the critical information that cause the error. Based on the analysis, a corrective method is proposed to assure convergence to the right schedule. The corrective method has two features: 1) it uses the original consensus network, and no communication reconfiguration is needed;and 2) no retransmissions for the lost packets are needed, instead, the errors are compensated by a new variable introduced in the update rule. We show that the proposed algorithm could achieve the optimal solution in the presence of packet losses. Numerical simulation results are used to validate the proposed algorithm.

关键词： consensus algorithm energy management distributed control packet losses smart grid

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Fixed-Time Leader-Follower consensus of Networked Nonlinear Systems via Event/Self-Triggered Control

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IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS 2020年第11期31卷 5029-5037页

作者： Liu, Jian Zhang, Yanling Yu, Yao Sun, Changyin Southeast Univ Sch Automat Nanjing 210096 Peoples R China Univ Sci & Technol Beijing Sch Automat & Elect Engn Beijing 100083 Peoples R China

This brief addresses the fixed-time event/self-triggered leader-follower consensus problems for networked multi-agent systems subject to nonlinear dynamics. First, we present an event-triggered control strategy to achieve the fixed-time consensus, and a new measurement error is designed to avoid Zeno behavior. Then, two new self-triggered control strategies are presented to avoid continuous triggering condition monitoring. Moreover, under the proposed self-triggered control strategies, a strictly positive minimal triggering interval of each follower is given to exclude Zeno behavior. Compared with the existing fixed-time event-triggered results, we propose two new self-triggered control strategies, and the nonlinear term is more general. Finally, the performances of the consensus tracking algorithms are illustrated by a simulation example.

关键词： consensus algorithm Learning systems Heuristic algorithms Topology Measurement errors Nonlinear systems Fixed-time consensus tracking multi-agent system (MAS) nonlinear dynamics self-triggered control

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Twisting-Based Finite-Time consensus for Euler-Lagrange Systems With an Event-Triggered Strategy

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IEEE TRANSACTIONS ON NETWORK SCIENCE AND ENGINEERING 2020年第3期7卷 1007-1018页

作者： Jin, Xin Du, Wei He, Wangli Kocarev, Ljupco Tang, Yang Kurths, Juergen East China Univ Sci & Technol Key Lab Adv Control & Optimizat Chem Proc Minist Educ Shanghai 200237 Peoples R China Macedonian Acad Sci & Arts Skopje 1000 North Macedonia Univ Sv Kiril & Metodij Fac Comp Sci & Engn Skopje 1000 North Macedonia Univ Calif San Diego BioCircuits Inst La Jolla CA 92093 USA Potsdam Inst Climate Impact Res Potsdam Germany Humboldt Univ Inst Phys D-10099 Berlin Germany Saratov NG Chernyshevskii State Univ Saratov 410000 Russia

In this paper, a twisting-based consensus algorithm is put forward to deal with the event-triggered finite-time consensus for networked Lagrangian systems with directed graphs. First, a fully distributed event-triggered finite-time protocol is considered, for which we can show that each agent can achieve the consensus after a settling time. In order to remove the requirement of continuous monitoring, a pull-based triggering mechanism is employed. Simultaneously, the Zeno-behavior can be excluded under a finite-time dynamic condition. Then, due to the advantages of non-chattering behaviors and finite-time convergence, a twisting-based consensus algorithm based on homogeneous techniques is developed to drive the Euler-Lagrange systems to the consensus value in a settling time. By means of Polya's theorem and Sum of Squares tools, a polynomial Lyapunov function is constructed to verify our criteria. At last, we give a numerical example for 2-DOF prototype manipulators to verify the validity of the theoretical results.

关键词： Protocols consensus algorithm Multi-agent systems Laplace equations Manipulators Mathematical model Eigenvalues and eigenfunctions Twisting control finite-time consensus event-triggered Euler-Lagrange systems

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