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arXiv 2020年

作者： Cao, Zhu Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and Technology Shanghai200237 China Shanghai Institute of Intelligent Science and Technology Tongji University Shanghai200092 China

One of the central themes in classical cryptography is multi-party computation, which performs joint computation on multiple participants’ data while maintaining data privacy. The extension to the quantum regime was proposed in 2002, but despite two decades of research, the current state-of-the-art multi-party quantum computation protocol for a fixed number of parties (even 2 parties) requires unbounded rounds of communication, which greatly limit its practical usage. In this work, we propose the first constant-round multi-party quantum computation protocol for a fixed number of parties against specious adversaries, thereby significantly reducing the required number of rounds. Our work constitutes a key step towards practical implementation of secure multi-party quantum computation, and opens the door for practitioners to be involved in this exciting field. The result of our work has wide implications to quantum fidelity evaluation, quantum machine learning, quantum voting, and distributed quantum information processing. © 2020, CC-BY.

关键词： Quantum optics

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Self-triggered consensus control for multi-agent systems

Self-triggered consensus control for multi-agent systems

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International Conference on Information and Automation (ICIA)

作者： Yanchao Shen Huaicheng Yan Gang Feng Hao Zhang Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and Technology Shanghai China Department of Mechanical and Biomedical Engineering City University of Hong Kong Kowloon Hong Kong

ISBN: (纸本)9781479913329;9781479940998

In this paper, self-triggered consensus control problem is investigated for a class of multi-agent systems. Each agent computes its next update time instance at the predefined time. This control strategy extends substantially the existing work on event-triggered control, because in the self-triggered deployment the agents have no need to maintain the track of the state error that triggers the actuation between continuous update instants. A distributed self-triggered control procedure is presented for a special first-order multi-agents and is shown to achieve the rendezvous objective. The effectiveness of the proposed control method is illustrated by a numerical example.

关键词： Multi-agent systems Measurement errors Decentralized control Laplace equations Educational institutions Topology

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Discrete-phase-randomized measurement-device-independent quantum key distribution

arXiv

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arXiv 2020年

Measurement-device-independent quantum key distribution removes all detector-side attacks in quantum cryptography, and in the meantime doubles the secure distance. The source side, however, is still vulnerable to various attacks. In particular, the continuous phase randomization assumption on the source side is normally not fulfilled in experimental implementation and may potentially open a loophole. In this work, we first show that indeed there are loopholes for imperfect phase randomization in measurement-device-independent quantum key distribution by providing a concrete attack. Then we propose a discrete-phase-randomized measurement-device-independent quantum key distribution protocol as a solution to close this source-side loophole. Copyright © 2020, The Authors. All rights reserved.

关键词： Quantum cryptography

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Partition mutation PSO for welding robot path optimization

Advances in Intelligent Systems and Computing

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Advances in Intelligent Systems and Computing 2015年 363卷 77-86页

作者： Wang, Xue-Wu Shi, Ying-Pan Gu, Xing-Sheng Ding, Dong-Yan Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and Technology Shanghai200237 China Institute of Microelectronic Materials and Technology School of Materials Science and Engineering Shanghai Jiao Tong University Shanghai200240 China

Many solder joints usually have to be traversed for spot welding robots, and reasonable welding sequence will improve welding efficiency. Intelligent optimization algorithms have been used to study path optimization problems in these years because of their effective optimization abilities. Due to its simplicity, high search accuracy and fast convergence rate, the particle swarm optimization (PSO) algorithm was used to study welding robot path planning. A novel hybrid discrete PSO algorithm was proposed to improve the basic PSO after the partition operation, mutation strategy were combined. Then, the optimization performance of the algorithm was used to solve 3-dimensional welding path planning problem. © Springer International Publishing Switzerland 2015.

关键词： Spot welding

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Coordinated Optimization Method of Dual Head Gasoline Blending Under Strict Constraint Conditions

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Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) 2019年第2期35卷 337-347页

作者： He, Renchu Chen, Haiquan Zhang, Weidong Zhu, Wenqi Key Laboratory of Advanced Control and Optimization Technology for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai200237 China Shanghai Key Laboratory of Intelligent Manufacturing and Robotics Shanghai University Shanghai200072 China Information and Measurement Center Jinling Company SINOPEC Nanjing210033 China Storage and Transportation Department Zhenhai Refining&Chemical Company SINOPEC Ningbo315207 China

For the upcoming China Ⅵ gasoline standard with much more strictly controlled properties, and high requirements for blending efficiency, a blending process and coordinated optimization algorithm for blending multiple brands of gasoline at the same time were developed. Octane number model, vapor pressure model, density model, distillation range model and content attribute model were established. The calculation process of octane number model and distillation range model have been improved, and 12 quality indicators of gasoline can be precisely monitored during the blending process. Considering the actual accumulative blending process, the properties of gasoline in the tank during the blending process should be converted into instantaneous properties zone at the blending head. The optimized properties of the blending head are used to compensate the properties deviation of the amount of blending and the tank bottom oil. Meanwhile, a reasonable and efficient coordination optimization algorithm is used to coordinate the upper limit of the common component oil, which solves the problem of scramble for the common component oil flow in the double blending head in the blending process. The simulation results show that the design method can be applied to the gasoline blending of double head in the field, and can also provide technical support for the upgrading of gasoline blending process under the China Ⅵ gasoline standard. © 2019, Editorial Office of Acta Petrolei Sinica(Petroleum Processing Section). All right reserved.

关键词： Gasoline

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Distributed event triggered H∞ filtering with nonhomogeneous Markov switching topologies

Distributed event triggered H∞ filtering with nonhomogeneou...

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UKACC International Conference on control (control)

作者： Wen Song Hao Zhang Huaicheng Yan Chen Peng Department of Control Science and Engineering Tongji University Shanghai China Key Laboratory of Advanced Control and Optimization for Chemical Processes of Ministry of Education East China University of Science and Technology Shanghai China School of Mechatronic Engineering and Automation Shanghai University Shanghai China

The distributed H ∞ state estimation problem over a filtering network with Markov switching topology is studied in this paper by employing event-triggered strategy. The strategy at each node is built on the output estimation error of its own and those received from its neighbours. Based on the communication uncertainty of practical networks, switching topology which subjects to a heterogeneous Markov chain is considered in filter design. By utilizing stochastic Markov stability theory, switching topology-dependent filters are designed such that the underlying error system is stochastically stable in mean square and the disturbance rejection attenuation level guarantees an H ∞ performance bound. An illustrative example is presented to show the applicability of the obtained results.

关键词： Network topology Switches Topology Symmetric matrices Markov processes Estimation error Attenuation

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Distributed link removal strategy for networked Meta-Population epidemics and its application to the control of the COVID-19 pandemic

arXiv

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arXiv 2020年

作者： Liu, Fangzhou Chen, Yuhong Liu, Tong Zhou, Zibo Xue, Dong Buss, Martin Department of Electrical and Computer Engineering Technical University of Munich Theresienstr. 90 Munich80333 Germany Key Laboratory of Advanced Control and Optimization for Chemical Processes East China University of Science and Technology Shanghai200237 China

In this paper, we investigate the distributed link removal strategy for networked meta-population epidemics. In particular, a deterministic networked susceptible-infected-recovered (SIR) model is considered to describe the epidemic evolving process. In order to curb the spread of epidemics, we present the spectrum-based optimization problem involving the Perron-Frobenius eigenvalue of the matrix constructed by the network topology and transition rates. A modified distributed link removal strategy is developed such that it can be applied to the SIR model with heterogeneous transition rates on weighted digraphs. The proposed approach is implemented to control the COVID-19 pandemic by using the reported infected and recovered data in each state of Germany. The numerical experiment shows that the infected percentage can be significantly reduced by using the distributed link removal strategy. Copyright © 2020, The Authors. All rights reserved.

关键词： Eigenvalues and eigenfunctions

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Process Design and Analysis of a Novel Heat Recovery Energy System for an Aromatics Complex

SSRN

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SSRN 2022年

作者： Liu, Yurong Yang, Minglei Ding, Yuxing Wang, Meihong Qian, Feng Key Laboratory of Advanced Control and Optimisation for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai200237 China Department of Chemical and Biological Engineering The University of Sheffield SheffieldS1 3JD United Kingdom

The aromatics complex is an energy-intensive process. Heat exchanger network (HEN) is one of the most effective ways for energy saving. It has been applied in existing aromatics complex. However, a large amount of low grade heat is still wasted. Therefore, there is a motivation to use organic Rankine cycle (ORC) to recover low grade heat so that the energy efficiency of the whole plant can be further improved. This study aims to propose a new low grade heat recovery energy system for the aromatics complex by integrating the ORC with HEN. An extended mixed-integer nonlinear programming (MINLP) model is first developed for the proposed system. The energy, exergy, and economic (3E) analysis are performed to evaluate the whole system performance and verify the technical and economic feasibility. The results show that the optimised proposed energy system performs with 9.05 % of ORC energy efficiency, 380.95 MW of recovered heat from the process streams, 82.13 % of the overall exergy efficiency, and -155.30 k$/year of the total annual cost. These results reveal the significant potential in energy savings and provide guidance to the aromatics complex needing to be retrofitted or to a new plant. © 2022, The Authors. All rights reserved.

关键词： Waste heat

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Techno-Economic Assessment of Modified Fischer-Tropsch Synthesis Process for Direct Co2 Conversion into Jet Fuel

SSRN

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SSRN 2023年

作者： Han, Yide Kamkeng, Ariane D.N. Otitoju, Olajide Ding, Yuxing Wang, Meihong Department of Chemical and Biological Engineering The University of Sheffield SheffieldS1 3JD United Kingdom Key Laboratory of Advanced Control and Optimisation for Chemical Processes Ministry of Education East China University of Science and Technology Shanghai200237 China

Direct use of CO2 through modified Fischer-Tropsch synthesis (FTS) process presents a viable approach for the production of carbon-neutral jet fuel. However, achieving high performance for the CO2-FTS process remains a significant challenge. Current technology can only achieve low CO2 conversion and low jet fuel yield using tailored catalysts, which hinders the commercial deployment of direct CO2-FTS process. This paper presents a techno-economic assessment (TEA) of jet fuel production via CO2-FTS process at commercial-scale. Two ex-situ water removal configurations: (a) multi-stage CO2-FTS process and (b) CO2-FTS with tail gas recycle process were conducted to assess their potential for performance improvement. Process performance was evaluated using a model developed in Aspen Plus® linking with Aspen Custom Modeller®, while economic evaluation was carried out in Aspen Process Economic Analyzer®. The CO2-FTS model was based on first principles and modified Anderson-Schulz-Flory (ASF) distribution. Results indicated that both ex-situ water removal configurations can significantly improve the process performance. CO2-FTS process with 90% tail gas recycle has the best performance for both technical and economic analysis. The process achieved 85.8% CO2 conversion and 35.6% jet fuel yield with the lowest energy demand of 5.30 MWh per tonne of produced jet fuel. Moreover, it boasts the lowest minimum selling price (MSP) of jet fuel at $2.6/kg despite incurring the second-highest capital expenditure cost of M$ 451.3. A comparison of the two ex-situ water removal configurations at 61.9% and 76.5% CO2 conversion, suggests that both processes exhibit comparable technical performances, yet the recycling of tail gas holds the potential to reduce economic costs. Consequently, this study will inspire researchers on process improvement and cost reduction of the commercial-scale CO2-FST jet fuel production. © 2023, The Authors. All rights reserved.

关键词： Carbon dioxide

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Enhancing Adaptive Event-Triggered Protocols for Multi-Agent Consensus with External Disturbances

Enhancing Adaptive Event-Triggered Protocols for Multi-Agent...

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International Conference on control, Automation, Robotics and Vision (ICARCV)

作者： Xianwei Li Yang Tang Bing Zhu Shaoyuan Li Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Ministry of Education of China Shanghai China Key Laboratory of Advanced Control and Optimization for Chemical Processes East China University of Science and Technology Shanghai China Seventh Research Division School of Automation Science and Electrical Engineering Beihang University Beijing China

ISBN: (数字)9781728177090

ISBN: (纸本)9781728177106

This paper studies the design of adaptive event-triggered protocols for consensus of linear multi-agent systems (MASs) with external disturbances. Different from most of the existing results that deal with undirected graphs, this paper addresses directed graphs, specifically graphs that are assumed to be strongly connected. Inspired by a recent development [1], this paper devises novel adaptive event-triggered protocols for linear MASs with all agents subject to external disturbances. Two specific designs of composite triggering conditions are analysed and discussed. Compared with the disturbance-free case, additional constraints need to be introduced to deal with external disturbances and moreover the time-dependent terms are allowed to take any finite functions, rather than a class of L1 functions.

关键词： Protocols Eigenvalues and eigenfunctions Laplace equations Directed graphs Symmetric matrices Closed loop systems Automation

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