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arXiv 2024年

作者： Carnerero, A. Daniel Tanaka, Taichi Li, Mengmou Hatanaka, Takeshi Wasa, Yasuaki Hirata, Kenji Ushifusa, Yoshiaki Ida, Takanori Department of Systems and Control Engineering School of Engineering Tokyo Institute of Technology Tokyo152-8550 Japan Graduate School of Advanced Science and Engineering Hiroshima University Higashi-Hiroshima739-0046 Japan Department of Electrical Engineering and Bioscience School of Advanced Science and Engineering Faculty of Science and Engineering Waseda University Tokyo169-8555 Japan Department of Electrical and Electronic Engineering School of Engineering University of Toyama Toyama930-8555 Japan Faculty of Economics and Business Administration The University of Kitakyushu Fukuoka802-8577 Japan Graduate School of Economics Kyoto University Kyoto606-8501 Japan

The global drive towards carbon neutrality has led to a significant increase in the number of power plants based on renewable energy sources (RES). Concurrently, numerous households are adopting RES to generate their own energy, aiming to decrease both electricity costs and carbon footprints. To support these users, many papers have been devoted to developing optimal investment strategies for residential energy systems. However, there is still a significant gap as these studies often neglect important aspects like carbon neutrality. For this reason, in this paper, we explore the concept of net-zero energy houses (ZEHs)—houses designed to have an annual net energy consumption around zero—by presenting a constrained optimization problem to find the optimal number of photovoltaic panels and the optimal size of the battery system for home integration. Solving this constrained optimization problem is difficult due to its nonconvex constraints. Nevertheless, by applying a series of transformations, we reveal that it is possible to find an equivalent linear programming (LP) problem which is computationally tractable. The attainment of ZEH can be tackled by introducing a single constraint in the optimization problem. Additionally, we propose a sharing economy approach to the investment problem, offering a strategy that could potentially reduce investment costs and facilitate the attainment of ZEH more efficiently. Finally, we apply the proposed frameworks to a neighborhood in Japan as a case study, demonstrating the potential for long-term ZEH attainment. The results show that, under the right incentive, users can achieve ZEH, reduce their electricity costs and have a minimal impact on the main grid. Copyright © 2024, The Authors. All rights reserved.

关键词： Linear programming

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Predicting and reducing "hospital-acquired infections" using a knowledge-based e-surveillance system

Predicting and reducing "hospital-acquired infections" using...

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作者： Noaman, Amin Y. Ragab, Abdul Hamid M. Al-Abdullah, Nabeela Jamjoom, Arwa Nadeem, Farrukh Ali, Anser G. Department of Computer Science Faculty of Computing and Information Technology King Abdulaziz University Jeddah Saudi Arabia Department of Information Systems Faculty of Computing and Information Technology King Abdulaziz University Jeddah Saudi Arabia Clinical Epidemiology and Infection Control Faculty of Nursing King Abdulaziz University Jeddah Saudi Arabia

The use of automated computer methods when detecting hospital-acquired infections (HAIs) enhances the validity of the surveillance in an effective manner. This is because manual infection control systems used by hospitals are time consuming and are often restricted to intensive care units. This paper proposes a new knowledge-based electronic surveillance system to predict and reduce HAIs. The system can gather patient-associated data from hospital databanks to automatically predict patient injury based on the standard central line-associated bloodstream infection algorithm for HAI detection rules. The application of the proposed electronic system reduces the number of central lines associated with infection of the bloodstream and reduces the length of stay for patient treatment and thus reduces costs. The proposed system has several advantages: (a) It is a web-based system that collects actual data from patients from several IT sources, which will help collect patient data safely and quickly, thereby predicting HAIs effectively. (b) It has an integrated simulator to generate patient records, providing the ability to train medical personnel and nurses to enhance their skills. (c) It is a multimedia-based system to improve patient health reporting. (d) It assists policymakers in reviewing and approving control plans and policies to reduce and prevent hospital injuries. (e) The investigational results of the system showed an enhancement value equal to 87%. © 2019 John Wiley & Sons, Ltd

关键词： Patient treatment

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Verification framework for control system functionality of unmanned aerial vehicles

arXiv

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arXiv 2020年

作者： Jasim, Omar A. Veres, Sandor M. Department of Automatic Control and Systems Engineering University of Sheffield Amy Johnson Building Mappin Street S1 3JD United Kingdom

A control system verification framework is presented for unmanned aerial vehicles using theorem proving. The framework’s aim is to set out a procedure for proving that the mathematically designed control system of the aircraft satisfies robustness requirements to ensure safe performance under varying environmental conditions. Extensive mathematical derivations, which have formerly been carried out manually, are checked for their correctness on a computer. To illustrate the proceedures, a higher-order logic interactive theorem-prover and an automated theorem-prover are utilized to formally verify a nonlinear attitude control system of a generic multi-rotor UAV over a stability domain within the dynamical state space of the drone. Further benefits of the proceedures are that some of the resulting methods can be implemented onboard the aircraft to detect when its controller breaches its flight envelop limits due to severe weather conditions or actuator/sensor malfunction. Such a detection procedure can be used to advise the remote pilot or an onboard intelligent agent to decide on some alterations of the planned flight path or to perform emergency landing. Copyright © 2020, The Authors. All rights reserved.

关键词： Unmanned aerial vehicles (UAV)

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Three-Dimensional Electro-Fenton System with Steel-Slag Based Particle Electrode for the Treatment of Refinery Spent Caustic

SSRN

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SSRN 2023年

作者： Chen, Fu Hua, Ziyi Zhu, Yanfeng Jiang, Feifei Wang, Liping Ma, Jing Liang, Huagen Tsiakaras, Panagiotis School of Public Administration Hohai University Nanjing211100 China Engineering Research Center of Ministry of Education for Mine Ecological Restoration China University of Mining and Technology Xuzhou221000 China Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization Carbon Neutrality Institute China University of Mining and Technology Xuzhou221008 China Laboratory of Alternative Energy Conversion Systems Department of Mechanical Engineering School of Engineering University of Thessaly Pedion Areos 38834 Greece School of Environment Science and Spatial Informatics

Refinery spent caustic (RSC) is a highly contaminated wastewater from the petroleum refining industry with complicated chemistry and high toxicity. In this work, a novel three-dimensional electro-Fenton (3DEF) system assisted by electromagnetic induction was developed to an actual RSC with a chemical oxygen demand (COD) concentration of 27000–33000 mg/L. Industrial waste steel slag was used as both the particle electrode and the Fenton’s catalyst. At optimal conditions, COD removal reached 93.6% within 90 min. Electromagnetic induction significantly enhanced COD degradation by promoting the corrosion of steel slag and the thermal activation of hydrogen peroxide. The reusability of steel slag particles was also enhanced by electromagnetic induction. Radical quenching tests demonstrate that hydroxyl radicals (•OH) played a main role in the pollutant degradation of RSC. The system shows good economic and environmental benefits with a total treatment cost of about 1.015 $/m3, achieving the objective of "treating waste with waste". © 2023, The Authors. All rights reserved.

关键词： Chemical oxygen demand

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Designing Method of Information-control systems Realization for Visual Programming Robotic Manipulators

Designing Method of Information-Control Systems Realization ...

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International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM)

作者： Dmitry Yukhimets Andrey Sakhnenko Alexander Sych Laboratory of Robotic Systems Institute of Automation and Control Processes FEB RAS Vladivostok Russia Laboratory of Intelligent Control Systems Institute of Marine Technology Problems FEB RAS Vladivostok Russia Department of Automation and Control Far Eastern Federal University Vladivostok Russia

ISBN: (数字)9781728145907

ISBN: (纸本)9781728145914

The paper considers a universal approach to the design and implementation of information control systems (ICS) that use a human-machine interface for interaction with automatic control systems (ACS) of robotic manipulators. The proposed approach allows you to create and edit control program of manipulator's movements, as well as to simulate its execution regardless of the hardware implementation of the control object. It is assumed that the system implemented in accordance with this approach can be implemented in the control of various industrial robotic manipulators and is considered as a highly effective alternative to the common control tools for manipulators and their working tools, thus representing a universal control panel for robotic complexes. Moreover, the use of such a universal remote control can occur autonomously from existing robots, this is significant advantage over popular alternatives. An example and effectiveness of such an implementation are considered.

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Waves in weakly ionised solar plasmas

arXiv

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arXiv 2022年

作者： Alharbi, Abdulaziz Ballai, I. Fedun, V. Verth, G. Plasma Dynamics Group School of Mathematics and Statistics University of Sheffield Hounsfield Road Hicks Building SheffieldS3 7RH United Kingdom Department of Mathematics Jamoum University College Umm Al-Qura University Jamoum Makkah25375 Saudi Arabia Plasma Dynamics Group Department of Automatic Control and Systems Engineering The University of Sheffield Mappin Street SheffieldS1 3JD United Kingdom

Here we study the nature and characteristics of waves propagating in partially ionised plasmas in the weakly ionised limit, typical for the lower part of the solar atmosphere. The framework in which the properties of waves are discussed depends on the relative magnitude of collisions between particles, but also on the relative magnitude of the collisional frequencies compared to the gyro-frequency of charged particles. Our investigation shows that the weakly ionised solar atmospheric plasma can divided into two regions and this division occurs, roughly, at the base of the chromosphere. In the solar photosphere the plasma is non-magnetised and the dynamics can described within the three-fluid framework where acoustic waves associated to each species can propagate. Due to the very high concentration of neutrals, the neutral sound waves propagates with no damping, while for the other two modes the damping rate is determined by collisions with neutrals. The ion and electron-related acoustic modes propagate with a cut-off determined by the collisional frequency of these species with neutrals. In the weakly ionised chromosphere only electrons are magnetised, however, the strong coupling of charged particles reduces the working framework to a two-fluid model. The disassociation of charged particles creates electric currents that can influence the characteristic of waves. The propagation properties of waves with respect to the angle of propagation are studied with the help of polar diagrams. Copyright © 2022, The Authors. All rights reserved.

关键词： Damping

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Symposium for combustion control 2017 and 2018 special issue

Symposium for combustion control 2017 and 2018 special issue

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作者： Andert, Jakob Pischinger, Stefan Pitsch, Heinz Abel, Dirk Albin, Thivaharan VKA - Institute for Combustion Engines RWTHAachen University Aachen Germany Institute for Combustion Technology RWTH Aachen University Germany IRT - Institute of Automatic Control RWTH AachenUniversity Aachen Germany Institute for Dynamic Systems and Control ETHZurich Zurich Switzerland

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Design of a Novel Autonomous Docking System With a Supporting Robotic Fish

Design of a Novel Autonomous Docking System With a Supportin...

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IEEE International Conference on Real-time Computing and Robotics (RCAR)

作者： Huijie Dong Chunyang Zhao Tiezhu Qiao Jian Wang Di Chen Yan Meng Junzhi Yu Ministry of Education Key Laboratory of Advanced Transducers and Intelligent Control System Taiyuan University of Technology Taiyuan China Institute of Automation Laboratory of Cognitive and Decision Intelligence for Complex System Chinese Academy of Sciences Beijing China Department of Advanced Manufacturing and Robotics College of Engineering State Key Laboratory for Turbulence and Complex Systems Peking University Beijing China College of Electronics and Information Engineering Guangdong Ocean University Zhanjiang China

Underwater supporting robots serving as a relay of energy supplements and communication for other underwater equipment are promising for ocean exploration, development, and protection. This paper proposes a novel autonomous docking system centered on a designed supporting robotic fish named ‘CourierFish’. Specifically, CourierFish is capable of docking with a surface dock station for supplying itself and docking with a seafloor platform for supporting equipment in the platform. A visual navigation scheme integrating LED and ArUco markers is presented for accurate localization. The control approach for docking motion is also illustrated. Simulations and aquatic experiments are performed to verify the feasibility of the proposed docking system. The obtained results lay a solid foundation for the construction of various underwater equipment and robot networks.

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A Time-Series Higher-Order Network Hierarchical Evolution Model for Dynamic Interaction of Nodes

SSRN

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SSRN 2022年

作者： Yang, Xiaoteng Wu, Zhenqiang Zhang, WenBo Javaid, Shumaila School of Computer Science Shaanxi Normal University Xi’an710119 China Key Laboratory of Modern Teaching Technology Ministry of Education Xi’an710062 China Department of Control Science and Engineering College of Electronics and Information Engineering Tongji University Shanghai201804 China Frontiers Science Center for Intelligent Autonomous Systems Shanghai201210 China

The evolution of hierarchies in complex systems is an exciting phenomenon since hierarchies exist in many social and biological networks. So far, many approaches have been proposed, however, they are either based on the locality of the nodes or the cluster relationships between networks. These approaches often use traditional time-series network modeling methods that focus only on local static relationships between different nodes but ignore the dynamic interactions between real network nodes. Local static and dynamic global relationships should be considered to understand better the generation and maintenance of hierarchical phenomena in networks. To address this problem, we propose a long-term, flexible hierarchical evolution model for explaining the hierarchical phenomena arising in networks. Our model can integrate both local static and dynamic global information in the network and use time and higher-order inter-node interactions to integrate static and dynamic relationships. New interactions in the network are formed based on preference information between nodes, while old links fade out over time. In addition, we derive critical points for the hierarchical evolution of the system over long periods. Importantly, our model allows the comparison of network rank formation across different data as a way to perform rank evolution studies. © 2022, The Authors. All rights reserved.

关键词： Time series

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Distributed Model Predictive control with Asymmetric Adaptive Terminal Sets for the Regulation of Large-scale systems

arXiv

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arXiv 2020年

作者： Aboudonia, Ahmed Eichler, Annika Lygeros, John Automatic Control Laboratory Department of Electrical Engineering and Information Technology ETH Zurich Switzerland Deutsches Elektronen-Synchroton DESY Hamburg22607 Germany

In this paper, a novel distributed model predictive control (MPC) scheme with asymmetric adaptive terminal sets is developed for the regulation of large-scale systems with a distributed structure. Similar to typical MPC schemes, a structured Lyapunov matrix and a distributed terminal controller, respecting the distributed structure of the system, are computed offline. However, in this scheme, a distributed positively invariant terminal set is computed online and updated at each time instant taking into consideration the current state of the system. In particular, we consider ellipsoidal terminal sets as they are easy to compute for large-scale systems. The size and the center of these terminal sets, together with the predicted state and input trajectories, are considered as decision variables in the online phase. Determining the terminal set center online is found to be useful specifically in the presence of asymmetric constraints. Finally, a relaxation of the resulting online optimal control problem is provided. The efficacy of the proposed scheme is illustrated in simulation by comparing it to a recent distributed MPC scheme with adaptive terminal sets. Copyright © 2020, The Authors. All rights reserved.

关键词： Adaptive control systems

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