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IEEE International Conference on Communications in China Workshops (ICCC)

作者： Fanwei Huang Yingxuan Guo Longxia Liao Junhui Zhao School of Information Engineering East China Jiaotong University Nanchang China School of Electronic and Information Engineering Beijing Jiaotong University Beijing China

ISBN: (数字)9798350377675

ISBN: (纸本)9798350377682

In this paper, a blockchain consensus algorithm tailored to Internet of Vehicles (IoV) environment is proposed to solve the deficiencies of traditional consensus algorithms such as high latency, low throughput and excessive resource consumption. The proposed approach adopts a hybrid consensus algorithm, which combines the Delegated Proof of Stake (DPoS) algorithm with the Practical Byzantine Fault Tolerance (PBFT) algorithm. This hybrid algorithm elects representative nodes via a voting mechanism to execute the verification process. Simulation results demonstrate that the consensus algorithm delineated in this paper outperforms traditional consensus algorithms in terms of latency and throughput, rendering it better suited for IoV-related scenarios.

关键词： Proof of stake Fault tolerance Simulation Conferences Fault tolerant systems consensus algorithm Throughput Rendering (computer graphics) Internet of Vehicles

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A Pattern for Proof of Stake consensus algorithm in Blockchain 22

A Pattern for Proof of Stake Consensus Algorithm in Blockcha...

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Proceedings of the 27th European Conference on Pattern Languages of Programs

作者： Madiha Syed Zain Ul Abadin Institute of Information Technology Quaid-i-Azam University Pakistan Institute of Information Technology Quaid-i-Azam University Pakistan and Ascertia (Pvt) Ltd. United Kingdom

ISBN: (纸本)9781450395946

Blockchain is a distributed ledger technology that has recently gained widespread popularity. Many industries have started to implement blockchain solutions for their application and services. Blockchain provides immutability, privacy, security, and transparency. There is no central authority to validate and verify the transactions, still, every transaction in the Blockchain is considered secure and verified. This is made possible by the use of a consensus algorithm which is a core part of any Blockchain network. Different consensus algorithms exist and the selection of appropriate consensus algorithms can affect the performance of the blockchain. This paper presents a pattern for one of the most commonly used blockchain consensus algorithms, which is the Proof of Stake (PoS) algorithm. This pattern describes its architecture, including its structure and dynamics.

关键词： Architectural pattern consensus algorithm Security Energy efficiency Blockchain validation mechanism

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Evaluation Model-Based Hybrid consensus algorithm for Blockchain in Automated Natural Gas Trading

Evaluation Model-Based Hybrid Consensus Algorithm for Blockc...

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Computer Information Science and Application Technology (CISAT), International Conference on

作者： Junji Li Li Yang Gaimei Gao Jiaqi Zhang Department of Computer Science and Technology Taiyuan University of Science and Technology Taiyuan China

ISBN: (数字)9798350375107

ISBN: (纸本)9798350375114

In natural gas automated trading, transaction efficiency of the whole trading system will inevitably be affected with the expansion of network size and the increase of transaction volume. In order to improve the timeliness of the consensus algorithm, a hybrid consensus algorithm PoE (Proof of Evaluation) which combines proof-of-work and proof-of-stake based on evaluation model is proposed. Firstly, the nodes are randomly and uniformly grouped, and each group performs the selection of candidate nodes in a PoW manner, which divides the nodes into candidate nodes and normal nodes, and reduces the difficulty of hash computation, thus reducing the arithmetic resources consumed in finding random numbers. Secondly, the upper limit of the entitlement value is set, which solves the problem of infinite growth of the entitlement. The credit mechanism is introduced to obtain the credit evaluation of the nodes. And lastly, the candidate nodes are evaluated by the evaluation model with a weight val-ue evaluation, and the candidate node with the largest weight value obtains the block bookkeeping right. Theoretical studies and simulation experiments show that our algorithm can reduce the waste of arithmetic resources, balance the competition for bookkeeping rights, and improve the security while reducing the delay and increasing the throughput. It provides new ideas to enhance the function of blockchain system, and also meets the basic technical standards of natural gas automated transactions, effectively solving the problems of transaction processing inefficiency in natural gas automated transactions.

关键词： Proof of stake Scalability Evaluation models consensus algorithm Throughput Robustness Security Natural gas Standards Arithmetic

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Architecture Design of Intelligent Blockchain consensus algorithm in Digital Development of Sports Industry Chain

Architecture Design of Intelligent Blockchain Consensus Algo...

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Knowledge Engineering and Communication Systems (ICKECS), International Conference on

作者： Zhong Wu Chuan Zhou Physical Education School Wuhan Business University Wuhan China Institute of Machanical Engineering Wuhan Institute of Shipbuilding Technology Wuhan China

Blockchain has become a new technology development trend, and consensus algorithm, as the core technology of blockchain, has also received more and more attention and attracted extensive interest in the academic community. In order to solve the shortcomings of the existing research on the digital development of the sports industry chain, this paper discusses the concept of the sports industry, the composition of the sports industry chain, the blockchain architecture and the RDPoS consensus algorithm, and then investigates and discusses the consensus algorithm computing platform and node evaluation. The digital platform of sports industry chain is designed. And the application scheme of the intelligent blockchain consensus algorithm in the fund side privacy protection of the sports product industry chain sales system was designed. Through the experimental analysis of the algorithm throughput in the transaction process, the experimental data showed that the RDPoS algorithm throughput reached 1000 when the number of nodes was 100 and 125, which was better than the other two consensus algorithms. Therefore, the application of this algorithm in the framework of digital development of sports industry chain has a good effect.

关键词： Industries Privacy consensus algorithm Computer architecture Throughput Reliability engineering Market research

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Distributed consensus Based algorithm for Economic Dispatch in a Microgrid

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IEEE TRANSACTIONS ON SMART GRID 2019年第4期10卷 3630-3640页

作者： Wang, Rui Li, Qiqiang Zhang, Bingying Wang, Luhao Shandong Univ Sch Control Sci & Engn Jinan 250061 Shandong Peoples R China

Economic dispatch problem (EDP) is a fundamental optimization problem of power systems. With the penetration of renewable energy sources in microgrids, this paper proposes a distributed algorithm based on consensus theory to solve the EDP with a quadratic cost function. The method takes advantage of the fact that incremental costs need to be equal for all buses at optimal output power values. Thus, the incremental cost of each bus is selected as a consensus variable and the local mismatch between total demand and generation is assigned as a feedback variable to meet demand constraints. Unlike the existing related works, the feedback gains for the feedback variables are different and time-varying. Using multi-parameter perturbation theory and graph theory, the convergence of the algorithm is proved. Furthermore, the upper bounds of the feedback gains are given theoretically, and we obtain that the algorithm converges to the optimal solution at a rate governed by the second largest eigen-value of the system matrix. Meanwhile, the algorithm is a fully distributed algorithm without a leader or a virtual command node. The simulation results illustrate the effectiveness of the algorithm even though there is a demand change and generator damage. Some simulation results intuitively illustrate how the convergence speed changes with the feedback gains.

关键词： Economic dispatch problem distributed algorithm consensus algorithm multi-agent system microgrid

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An Improved Prescribed-Time Privacy-Preserving Average consensus algorithm for First-Order Multi-Agent Systems

An Improved Prescribed-Time Privacy-Preserving Average Conse...

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Chinese Automation Congress (CAC)

作者： Bowen Chen Jiangfeng Yue Mengji Shi Weihao Li Boxian Lin Linggong Zhao Kaiyu Qin School of Aeronautics and Astronautics University of Electronic Science and Technology of China Chengdu China Key Laboratory of Sichuan Province Aircraft Swarm Intelligent Sensing and Cooperative Control Chengdu China Chinese Aeronautical Establishment Beijing China

ISBN: (数字)9798350368604

ISBN: (纸本)9798350368611

Privacy issues, communication constraints and convergence performance are key factors for expanding applications of multi-agent systems, but considering the above three factors simultaneously has not been well addressed. In order to extend the practical application scenarios and fill such gaps, the paper proposes an improved prescribed-time privacy-preserving consensus method based on event-triggered mechanism. Unlike the traditional privacy protection scheme, proposed method adopts a decentralized (executed separately by every agent), time-varying transformation to encrypt the information. Agents encode their true states in virtue of independent key before transmitting them, which makes the agents' internal states indecipherable from others. On this basis, the prescribed-time theory is introduced to achieve convergence at any specified time within the range allowed by the actuator performance. In addition, event-triggered mechanism can effectively relieve the actuator pressure caused by frequent updates and reduce computational resource consumption. Finally, the validity of theoretical results is verified by numerical simulation experiments.

关键词： Actuators Privacy Data privacy Event detection consensus algorithm Numerical simulation Cryptography Protection Convergence Multi-agent systems

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Privacy-preserving Average consensus algorithm with Beaver Triple

Privacy-preserving Average Consensus Algorithm with Beaver T...

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IEEE Conference on Decision and Control

作者： Peng Wang Yang Lu Jianming Lian Lulu Pan Haibin Shao Ning Li Department of Automation Shanghai Jiao Tong University Shanghai China School of Computing and Communications Lancaster University

ISBN: (数字)9798350316339

ISBN: (纸本)9798350316346

A privacy-preserving average consensus algorithm is designed based on the Beaver triple technique against passive adversaries. The Beaver triple technique is integrated into a restructure of the discrete-time average consensus algorithm to preserve the privacy of initial values of agents in a multiagent system. The performance of the algorithm is theoretically analyzed.

关键词： Privacy consensus algorithm Optimization Multi-agent systems

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Distributed optimal dispatching of AC/DC hybrid microgrid based on consensus algorithm

Distributed optimal dispatching of AC/DC hybrid microgrid ba...

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Power and Electrical Engineering (ACPEE), 5th Asia Conference on

作者： Lingxiao Li Xin Bai Yaosong Guo Jun Zhang Cai Chen Yapeng Yi Aiping Wang NARI Technology Co. LTD NARI Group Corporation(State Grid Electric Power Research Institute) Nanjing China

ISBN: (纸本)9781728191591;9781728191607

With the increasing of DC load and the maturity of power electronics technology, AC/DC hybrid microgrid (HMG), as a new form of microgrid, has been widely concerned. The optimal dispatching method has become a key technology for the rapid development of AC/DC HMG. Based on the consensus algorithm, a distributed optimal dispatching method is proposed in this paper. Firstly, a convex optimization model about AC/DC HMG is established. Secondly, based on the multi-agent system, a distributed control framework is presented. The "Leader-Follow" consensus algorithm is the solution of optimization model, and the incremental cost of distributed generator (DG) and energy storage is selected as the consensus variable. The solution process is divided into two stages to meet AC and DC load respectively for reducing the energy conversion loss. Finally, the results of an example prove the feasibility of the presented distributed optimal dispatching method.

关键词： consensus algorithm Microgrids Dispatching Hybrid power systems Convex functions Power electronics Power generation

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PBFT consensus algorithm Based on Quality of Service Improvement

PBFT Consensus Algorithm Based on Quality of Service Improve...

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International Conference on Applied Machine Learning (ICAML)

作者： Shiyong Xiong Xiaohang Mou Rongsen Wu Software Engineering Chongqing University of Posts and Telecommunications Chongqing China

A consortium chain is a type of blockchain that is only open to some groups. The Practical Byzantine Fault Tolerance (PBFT) algorithm is commonly used in the consortium chain. However, there are problems with the simple selection of primary nodes and complicated communication processes. Given the above problems, this paper proposes to improve PBFT algorithm combined with node quality of service. The node quality of service model is established through multiple indicators of nodes, and nodes are divided into consistency nodes and light nodes according to the priority of service quality to ensure that the consensus process consists of nodes with higher priority are completed. Through the experimental results of this paper, it can be see that the improved scheme can significantly lessen the number of communications, improve the system throughput, and has good fault tolerance and security.

关键词： Fault tolerance Fault tolerant systems Quality of service Machine learning consensus algorithm Throughput Blockchains

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Cooperative transport of quad-rotor by consensus algorithm

Cooperative transport of quad-rotor by consensus algorithm

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Asian Control Conference

作者： Kento Kotani Toru Namerikawa Department of System Design Engineering Keio University Kohoku-ku Yokohama-shi Japan

ISBN: (纸本)9781728102634

At present, UAV is common to use as a single unit, but by operating as multi-agent system, it is possible to possibly be able to carry out more sophisticated tasks. For example, it may be possible to realize long-distance transportation with heavy object which impossible by a single drone. Therefore, we propose a control method to achieve cooperative transport so that the payload follows the virtual leader. We assume the transporting problem connected payload and multiple quad-rotors with cable. In this research, we treated quad-rotor as a model regarded as a linear secondary system and used consensus algorithm to achieve the purpose. Finally we verified its usefulness by simulation.

关键词： Payloads Mathematical model Force consensus algorithm Drones Rotors

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