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检索条件"主题词=Consensus algorithm"

共 2595 条记录，以下是171-180 订阅

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Incremental Cost consensus algorithm in a Smart Grid Environment

Incremental Cost Consensus Algorithm in a Smart Grid Environ...

引用

General Meeting of the IEEE-Power-and-Energy-Society (PES)

作者： Zhang, Ziang Chow, Mo-Yuen N Carolina State Univ Dept Elect & Comp Engn Raleigh NC 27606 USA

ISBN: (纸本)9781457710018

In a next generation power system, effective distributed control algorithms could be embedded in distributed controllers to properly allocate electrical power among connected buses autonomously. In this paper, we present a novel approach to solve the economic dispatch problem. By selecting the incremental cost of each generation unit as the consensus variable, the algorithm is able to solve the conventional centralized control problem in a distributed manner. The row-stochastic matrices have been used to indicate the different topologies of distribution systems and their configuration properties, such as convergence speeds. The simulation results of several case studies are provided to verify the algorithm.

关键词： Distributed control consensus algorithm quantized consensus economic dispatch multi-agent system smart grid

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A Weak consensus algorithm and Its Application to High-Performance Blockchain 40

A Weak Consensus Algorithm and Its Application to High-Perfo...

引用

40th IEEE Conference on Computer Communications (IEEE INFOCOM)

作者： Wang, Qin Li, Rujia Southern Univ Sci & Technol Shenzhen 518055 Peoples R China Swinburne Univ Technol Melbourne Vic 3122 Australia Univ Birmingham Edgbaston B15 2TT England HPB Fdn DUO Tower Singapore 189352 Singapore

ISBN: (纸本)9780738112817

A large number of consensus algorithms have been proposed. However, the requirement of strict consistency limits their wide adoption, especially in high-performance required systems. In this paper, we propose a weak consensus algorithm that only maintains the consistency of relative positions between the messages. We apply this consensus algorithm to construct a high-performance blockchain system, called Sphinx. We implement the system with 32k+ lines of code including all components like consensus/P2P/ledger/etc. The evaluations show that Sphinx can reach a peak throughput of 43k TPS (with 8 full nodes), which is significantly faster than current blockchain systems such as Ethereum given the same experimental environment. To the best of our knowledge, we present the first weak consensus algorithm with a fully implemented blockchain system.

关键词： consensus algorithm Blockchain Performance

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Distributed Control Method for Multi-user Side Energy Storage SOC Based On consensus algorithm 9

Distributed Control Method for Multi-user Side Energy Storag...

引用

9th International Conference on Power and Renewable Energy

作者： Zhang, Haijing Wang, Xin Lu, Yuan Jiang, Yuan Feng, Yankun Guo, Tianan State Grid Shandong Elect Power Supply Co Mkt Serv Ctr Metrol Ctr Jinan Shandong Peoples R China State Grid Zibo Power Supply Co Zibo Shandong Peoples R China Comprehens Energy Technol Co Ltd Hebei Xiongan Xuji Elect Technol Henan Peoples R China

ISBN: (纸本)9798350377477;9798350377460

In recent years, user-side energy storage has developed rapidly and is widely used to save electricity costs for industrial and commercial users. Compared with source-side and grid-side centralised energy storage, user-side energy storage is more decentralised, with smaller single capacity and larger quantity, which is not easy to carry out centralised regulation and control. In contrast, the distributed control method has the characteristics of strong control robustness and stability, which is more suiTABLE as the SOC coordinated control of a large number of distributed energy storage. In this paper, a distributed energy storage SOC coordinated control algorithm based on improved consensus algorithm is designed, which can achieve SOC consensus control of multiple user-side energy storage, and compared with the centralised control scheme, it has the features of small computation amount of the central controller and strong robustness of the controller. Simulation results show that the distributed energy storage SOC coordinated control algorithm based on the improved consensus algorithm designed in this paper can effectively achieve the consistent control of multiple user-side energy storage in the station area.

关键词： User-side energy storage consensus algorithm SOC coordination SOC estimation Distributed control scheme

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A New consensus algorithm for Multi-Agent Systems via Dynamic Output Feedback Control

A New Consensus Algorithm for Multi-Agent Systems via Dynami...

引用

IEEE International Conference on Control Applications/International Symposium on Intelligent Control

作者： Zhai, Guisheng Okuno, Shohei Imae, Joe Kobayashi, Tomoaki Osaka Prefecture Univ Dept Mech Engn Osaka 5998531 Japan

ISBN: (纸本)9781424446018

In this paper, we study a consensus problem for multi-agent systems via dynamic output feedback control. The entire system is decentralized in the sense that each agent can only obtain output information from its neighbor agents. In contrast to the existing graph Laplacian based algorithm, we propose to reduce the consensus problem on hand to solving a strict matrix inequality using appropriate coordinate transformation, and also propose a homotopy-based method for solving the matrix inequality. It turns out that our algorithm includes the existing graph Laplacian based algorithm as a special case, and can deal with various additional control requirements such as convergence rate specification and actuator limitations.

关键词： Multi-agent systems consensus algorithm dynamic output feedback graph Laplacian matrix inequality homotopy method LMI

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Constrained Distributed Estimation Based on consensus algorithm for Mobile Robots Tracking 4

Constrained Distributed Estimation Based on Consensus Algori...

引用

4th IEEE International Conference on Control System Computing and Engineering (ICCSCE 2014)

作者： Yousefi, Zeinab R. Menhaj, Mohammad B. Amirkabir Univ Technol Dept Elect Engn Tehran Iran

ISBN: (纸本)9781479956869

We are presenting a distributed algorithm for tracking a moving target using mobile robots, each equipped with sensors. In this work, to cope with the constraints on the noise and states of the target, we employ a distributed estimation algorithm which is based on the concept of moving horizon estimation (MHE). A consensus process in this algorithm guarantees all the mobile robots asymptotically converge to a common value for the estimate of the moving target states. Furthermore, the movement decision of the mobile robots is based on the flocking algorithm.

关键词： Distributed moving horizon estimation consensus algorithm flocking mobile robots target tracking

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MSig-BFT: A Witness-Based consensus algorithm for Private Blockchains 24

MSig-BFT: A Witness-Based Consensus Algorithm for Private Bl...

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24th IEEE International Conference on Parallel and Distributed Systems (ICPADS)

作者： Chen, Chun-Wei Su, Jian-Wei Kuo, Tung-Wei Chen, Kung Natl Chengchi Univ Dept Comp Sci Taipei Taiwan

ISBN: (纸本)9781538673089

In this paper, we focus on the design of consensus algorithms for permission-based blockchains, i.e., private blockchains. In most consensus algorithms, blocks are proposed by a specific role called "leader". hi this paper, we introduce a new role called "witness" to supervise the leader. The presence of the witness facilitates the design of the consensus algorithm. We propose a witness-based consensus algorithm that guarantees safety and liveness. We implemented this consensus algorithm on Go Ethereum. The experimental result shows that in a blockchain where four nodes participate in the consensus process, we can achieve a throughput of 1000 transactions per second (TPS). Even if these four nodes are located on different continents, and one of them is faulty, we can still achieve a throughput of 300 TPS. Finally, we find that during the experiment, a significant portion of time (>50%) is spent on activities other than the consensus task. The result suggests that to further increase the throughput of a private blockchain, the consensus task and non-consensus activities should be considered jointly.

关键词： Private blockchain consensus algorithm Byzantine fault tolerance

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A Decentralized Architecture and Simple consensus algorithm for Autonomous Agents 18

A Decentralized Architecture and Simple Consensus Algorithm ...

引用

12th European Conference on Software Architecture (ECSA)

作者： Meyer, Ole Hesenius, Marc Gries, Stefan Wessling, Florian Gruhn, Volker Univ Duisburg Essen Duisburg Germany

ISBN: (纸本)9781450364836

Autonomous agents not only need to make decisions, but also might need to negotiate situations with other autonomous systems and arrange how to proceed. Architecting such systems requires developers to weigh several options and decide, whether a central authority is beneficial or if consensus can be delegated to the agents themselves. We present a decentralized architecture accompanied by a simple consensus algorithm for autonomous agents and demonstrate its application within a simulated traffic system with model cars. We furthermore compare this concept with an older, centralized incarnation, and elaborate advantages and disadvantages.

关键词： Autonomous Agents Decentralized Architecture consensus algorithm Traffic Control Autonomous Driving

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A Dynamic consensus algorithm based Low-Voltage Ride-Through Operation of Power Converters in Grid-Interactive Microgrids 42

A Dynamic Consensus Algorithm based Low-Voltage Ride-Through...

引用

42nd Annual Conference of the IEEE-Industrial-Electronics-Society (IECON)

作者： Zhao, Xin Meng, Lexuan Savaghebi, Mehdi Vasquez, Juan C. Guerrero, Josep M. Wu, Xiaohua Aalborg Univ Dept Energy Technol Aalborg Denmark Northwestern Polytech Univ Sch Automat Xian Peoples R China

ISBN: (纸本)9781509034741

The possibility of increasing penetration level of grid-interactive microgrids (MGs) has gained a great interest over the past decade. Thus, it is critical to investigate the performance of the MGs under voltage sags, since it may induce instability to the power grid. Negative sequence droop control based voltage support strategy has been proposed to aid MGs riding through three phase asymmetrical voltage sags. However, since the line impedance from each converter to the point of common coupling (PCC) is not identical, both positive sequence and negative sequence output current of the converters cannot be equally shared if no extra current balancing loop is added. Accordingly, a dynamic consensus algorithm (DCA) based negative/positive sequence current sharing scheme is proposed in this paper. Finally, a lab-scale AC microgrid was designed and tested in the lab to validate the feasibility of the proposed control method.

关键词： grid-interactive microgrid low-voltage ride-through hierarchical control consensus algorithm

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Task Scheduling System Based on consensus algorithm in P2P Network 21

Task Scheduling System Based on Consensus Algorithm in P2P N...

引用

21st Asia-Pacific Network Operations and Management Symposium (APNOMS)

作者： Jiao, Chenhang Wang, Yun Tu, Jinbin Southeast Univ Sch Comp Sci & Engn Nanjing 211189 Peoples R China

ISBN: (纸本)9788995004388

Centralized networks can perform task scheduling readily because they can easily collect system information and manage tasks. However, due to the existence of the central nodes, centralized networks have low fault tolerance. On the contrary, peer-to-peer(P2P) networks have higher fault tolerance, but they do not have global information without central nodes. Therefore, how to schedule tasks in a P2P network has become a problem and a challenge. This paper proposes a consensus algorithm to maintain task information in the P2P network and implements a scheduling system to solve this problem. At the same time, it combines the ease of container deployment and migration to improve the efficiency of task scheduling. Besides, the heartbeat mechanism between nodes achieves fault tolerance for nodes. The system can be used in network environments without central nodes, such as mobile Ad hoc networks.

关键词： peer-to-peer network task scheduling consensus algorithm container

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A Modified Blockchain DPoS consensus algorithm Based on Anomaly Detection and Reward-Punishment 13

A Modified Blockchain DPoS Consensus Algorithm Based on Anom...

引用

13th IEEE International Conference on Communication Software and Networks (ICCSN)

作者： Wei, Yaxing Liang, Liang Zhou, Bo Feng, Xinsong Chongqing Univ Sch Microelect & Commun Engn Chongqing Peoples R China

ISBN: (纸本)9781665431828

The blockchain consensus algorithm can be leveraged to enhance IoT security and promote the efficiency of collaboration among IoT nodes. Delegated Proof of Stake (DPoS) can simultaneously meet the low-cost and high-efficiency requirements and improve the service quality of node collaboration. However, the malicious attacks, selfishness and insufficient enthusiasm of collaborative nodes can affect DPoS consensus process. In view of these challenges, we modify DPoS consensus algorithm, and design a self-selecting abnormal data detection algorithm to identify abnormal data from malicious attacks and selfishness behavior of nodes. Meanwhile, a game theory-based reward and punishment incentive mechanism is proposed to improve the voting enthusiasm of nodes. Simulation results show that the proposed mechanism can effectively reduce the effect of malicious attacks and nodes selfishness in DPoS consensus process.

关键词： blockchain consensus algorithm game theory internet of things

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