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DeCASA in AgriVerse: Parallel Agriculture for Smart Villages in Metaverses

IEEE/CAA Journal of Automatica Sinica 2022年第12期9卷 2055-2062页

作者： Xiujuan Wang Mengzhen Kang Hequan Sun Philippe de Reffye Fei-Yue Wang The State Key Laboratory for Management and Control of Complex Systems Chinese Academy of SciencesBeijing 100190 Beijing Engineering Research Center of Intelligent Systems and Technology Beijing 100190China School of Artificial Intelligence University of Chinese Academy of SciencesBeijing 100190 Department of Chromosome Biology Max Planck Institute for Plant Breeding ResearchBeijing 100049China Faculty of Biology LMU MunichGroßhaderner Str.2Planegg-Martinsried D-82152Germany AMAP Univ MontpellierCIRADCNRSINRAEIRDMontpellier F-34398France IEEE Macao Institute of Systems Engineering Macao University of Science and TechnologyMacao 999078China

The demand for food is tremendously increasing with the growth of the world population,which necessitates the development of sustainable agriculture under the impact of various factors,such as climate *** fulfill this challenge,we are developing Metaverses for agriculture,referred to as Agri Verse,under our Decentralized Complex Adaptive systems in Agriculture(De CASA)project,which is a digital world of smart villages created alongside the development of Decentralized sciences(De Sci)and Decentralized Autonomous Organizations(DAO)for Cyber-Physical-Social systems(CPSSs).Additionally,we provide the architectures,operating modes and major applications of De CASA in *** achieving sustainable agriculture,a foundation model based on ACP theory and federated intelligence is ***,we discuss the challenges and opportunities.

关键词： Parallel Agriculture Management and control AgriVerse Agriculture CPSS ACP DAO-Based Platform Precision Agriculture

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Reliability-Aware Vehicular Communication and Mobility Optimization: Joint Data Transmission Scheduling and Motion Planning

Reliability-Aware Vehicular Communication and Mobility Optim...

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2022 IEEE International Conference on Unmanned systems, ICUS 2022

作者： Xu, Gangchuan Zhou, Jianshan Tian, Daxin Ren, Chenghao Duan, Xuting Sheng, Zhengguo School of Transportation Science and Engineering Beihang Beijing Key Laboratory for Cooperative Vehicle Infrastructure Systems and Safety Control Beijing100191 China Zibo Vaucrefly Intelligent Technology Co. Ltd. Zibo255000 China University of Sussex Department of Engineering and Design Richmond United Kingdom

ISBN: (数字)9781665484565

ISBN: (纸本)9781665484565

Motion planning and vehicular communication are two enabling technologies for the practical realization of connected autonomous vehicles (CAVs), However, few studies have recently provided an effective systematic design from a joint optimization perspective. In our research, we present an optimization system that joins the reliability-oriented cellular vehicle-to-infrastructure communication (V2I) and the multi-objective motion planning into a model predictive control (MPC) model. We propose a stochastic model characterizing the V2I communication reliability and an optimization cost function for the motion planning of a CAV regarding control energy consumption, mobility efficiency, and smoothness. The system model is to maximize the V2I communication reliability meanwhile minimizing the motion cost by jointly optimizing the velocity and data transmission of the vehicle. Using an E-constraint method, we transform the multi-objective optimization model into a tractable problem and propose a numerical optimization algorithm to solve it. Simulation results demonstrate the validity of our joint optimization method for reliability-guaranteed vehicular communication and optimal motion planning and its performance outperforms several baselines. © 2022 IEEE.

关键词： Motion planning

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Microstructure of Ni-based hard facing alloy and its polarization behavior in aqueous solution with different pH and chloride concentration

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Corrosion Communications 2021年第3期3卷 1-9页

作者： Rongguang Wang Yasunori Satake Yunhui Li Tian Xiao Masaharu Honda Hideki Fukuhara Seiya Hiramatsu Department of Mechanical Systems Engineering Hiroshima Institute of Technology Graduate School of Science and Technology Hiroshima Institute of Technology Nikko Kosan Co. Ltd. Technical Development Department The Japan Steel Works Ltd.Aki-Ku

To clarify the corrosion behavior of Ni-based hard facing alloy Colmonoy 56 and the preferential dissolution detail at the micrometer scale, the microstructure and the elemental distribution of a rod were analyzed, followed with the polarization measurement in aqueous solution with different p H and Na Cl concentrations. This rod has Fe-, Si-, and Cr-solutioned [Ni] matrix with heterogeneously dispersed secondary phases of Cr23C6, CrB, Cr2B, and Cr5B3. The polarization curve largely changed with different p H: active in acid solution and passive in neutral and alkaline solution. The strongest passivation appeared at p H = 11. Cl-promoted the corrosion attack to the [Ni] matrix. In the case of pH = 11, Cl-caused the fast climb of anodic current from passivation at a less noble potential. Preferential dissolution of the [Ni] matrix occurred in most solutions, except in the case of pH = 14 without Na Cl, in which the secondary phases preferably dissolved.

关键词： Ni-based hard facing alloy Colmonoy 56 Microstructure Polarization pH Chloride concentration

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Turbocharger rotor vibration reduction methodology with an active control scheme

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Noise and Vibration Worldwide 2021年第11期52卷 347-355页

作者： Mutra, Rajasekhara Reddy Srinivas, J. Shaik, Jakeer Hussain Chinna Obaiah, Maddela Balamurali, Gunji Kumar, Puneet Noise Vibration Harshness Lab School of Mechanical Engineering Vellore Institute of Technology VelloreTamil Nadu India RourkelaOdisha India Department of Mechanical Engineering Malla Reddy Engineering College SecunderabadTelangana India Control Systems Lab School of Electrical Engineering Vellore Institute of Technology VelloreTamil Nadu India Machine Dynamics Lab School of Mechanical Engineering Vellore Institute of Technology VelloreTamil Nadu India Department of Aerospace Engineering Karunya Institute of Technology and Science CoimbatoreTamil Nadu India

The turbocharger rotors are often supported on the dual film floating ring bearings that are meant for high-speed applications. The damping ability of these bearings is relatively high. However, due to highly nonlinear bearing forces, often system instability occurs. The present work focuses on the dynamic analysis and active vibration control studies of a practical turbocharger rotor system with the use electromagnetic actuator (EMA) system. Initially, the system is analyzed using the finite element approach. The inner and outer film forces are considered along with rotor imbalance forces. The dynamic responses at the critical operating speeds are obtained numerically. To minimize the vibration amplitudes, a tiny EMA system is installed at one of the nodes along the shaft. The effect of the EMA parameters such as the number of turns of winding coil around a pole (Nc) and pole-face area (Aa) on the response of the system is studied. Further, an open-loop control configuration is practically studied by using a vibration shaker at the bearing node under different operating speeds, and the percentage reduction in critical vibration amplitudes is recorded. The EMA system is effectively controlling the high-speed rotor system vibrations. The EMA parameters Nc and Aa are influencing the system vibration response. Further, an experimental result has given considerable vibration reduction with the present approach. © The Author(s) 2021.

关键词： System stability

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Information Presentation Strategies to Promote Pedestrian Behavior Change in Mixed Spaces with Automated Vehicle

Information Presentation Strategies to Promote Pedestrian Be...

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IEEE/SICE International Symposium on System Integration

作者： Yuki Nishiura Hiroyuki Yamada Ryo Kurazume Graduate School of Information Science and Electrical Engineering Kyushu University Japan Autonomous Control Research Department Center for Sustainability - Connective Automation Hitachi Ltd. Research and Development Group Ibaraki Japan Faculty of Information Science and Electrical Engineering Kyushu University Fukuoka Japan

This paper introduces an information presentation strategy for pedestrians, aiming to enhance traffic efficiency in a mixed pedestrian-automated vehicle environment, such as a public road. While automated driving technology has made remarkable progress, interactions with pedestrians on regular roads have mostly been studied in virtual environments using virtual reality goggles. According to these studies, potential traffic efficiency and safety issues arise from pedestrians' limited understanding of automated vehicle behavior. To address this, we propose a human-machine interface employing a head-mounted display (HMD) to mitigate traffic efficiency degradation caused by pedestrians. The proposed system draws upon behavioral economics principles to encourage pedestrians to modify their behavior and develop better interactions with automated vehicles. Simulations were conducted to identify an information presentation strategy that strongly supports learning, and its effectiveness was further validated through experiments involving a real vehicle. Notably, the experimental results confirmed that the information presentation strategies proven effective in simulations also facilitated pedestrian learning during real-world interactions.

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Fixed-time neuroadaptive formation control for multiple QUAVs with external disturbance

Advanced Control for Applications: Engineering and Industria...

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advanced control for Applications: engineering and Industrial systems 2024年第3期6卷

作者： Cheng, Shuai Xin, Bin Du, Zhaofeng Chen, Jie School of Automation Beijing Institute of Technology Beijing China The National Key Lab of Autonomous Intelligent Unmanned Systems Beijing Institute of Technology Beijing China The Department of Control Science and Engineering Shanghai Research Institute for Intelligent Autonomous Systems Tongji University Shanghai China

This paper studies the formation control of multiple quadrotor unmanned aerial vehicle systems (MQUAVSs) with external disturbance. A new adaptive fixed-time cooperative control protocol is designed for MQUAVSs. A fixed-time command filtered compensation control technology is presented to overcome the "explosion of complexity" issue, and a new fixed-time error compensation signal is designed to compensate the filtering error, which improves the convergence speed of the system. Adaptive neural network technology is introduced to deal with unknown nonlinear functions in the system. A fixed-time stability theorem is presented for MQUAVSs to ensure that MQUAVSs can reach the predetermined formation and the formation tracking errors converge to the neighborhood of the origin in a fixed time. Finally, the effectiveness of the proposed method is verified by the formation simulation of MQUAVs. © 2024 John Wiley & Sons Ltd.

关键词： Error compensation

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Blow‑Spun Si_(3)N_(4)‑Incorporated Nanofibrous Dressing with Antibacterial,Anti‑Inflammatory,and Angiogenic Activities for Chronic Wound Treatment

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advanced Fiber Materials 2024年第2期6卷 543-560页

作者： Pengchao Ma Chun‑Yi Yang Chengli Li Peilun Hu Fang Yang Jiaju Lu Yin‑Yuan Huang Hui Wu Qiong Wu Yongwei Pan Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced MaterialsSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Orthopedics School of Clinical MedicineBeijing Tsinghua Changgung HospitalTsinghua UniversityBeijing 102218China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018China MOE Key Laboratory of Bioinformatics Center for Synthetic and Systems BiologySchool of Life SciencesTsinghua UniversityBeijing 100084China Center for Biomaterials and Regenerative Medicine Wuzhen LaboratoryTongxiang 314500China

The effective and safe healing of chronic wounds,such as diabetic ulcers,presents a significant clinical challenge due to the adverse microenvironment in the wound that hinders essential processes of wound healing,including angiogenesis,inflammation resolution,and bacterial ***,there is an urgent demand for the development of safe and cost-effective multifunctional therapeutic *** nitride,with its distinctive antibacterial properties and bioactivities,shows great potential as a promising candidate for the treatment of chronic *** this study,a silicon nitride-incorporated collagen/chitosan nanofibrous dressing(CCS)were successfully fabricated using the solution blow spinning technique(SBS).SBS offers compelling advantages in fabricating uniform nanofibers,resulting in a three-dimensional fluffy nanofibrous scaffold that creates an optimal wound healing *** blow-spun nanofibrous dressing exhibits excellent hygroscopicity and breathability,enabling effective absorption of wound ***,the incorporated silicon nitride within the fibers triggers surface chemical reactions in the aqueous environment,leading to the release of bioactive ions that modulate the wound ***,the CCS demonstrated exceptional capabilities in absorbing wound exudate,facilitating water vapor transmission,and displaying remarkable antibacterial properties in vitro and in a rat infected wound model(up to 99.7%,4.5×10^(7)CFU/cm^(2)for Staphylococcus aureus).Furthermore,the CCS exhibited an enhanced wound closure rate,angiogenesis,and anti-inflammatory effects in a rat diabetic wound model,compared to the control group without silicon nitride incorporation.

关键词： Chronic wound Antibacterial dressing Silicon nitride Solution blow spinning Angiogenesis

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A Formation control for Multi-Agent systems for Event-Trigger-Based Variable Gain controllers

A Formation Control for Multi-Agent Systems for Event-Trigge...

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Annual Conference of Industrial Electronics Society

作者： Daiki Asada Takuya Nakagawa Yoshikatsu Hoshi Hidetoshi Oya Shunya Nagai Graduate School of Integrative Science and Engineering Tokyo City University Tokyo Japan The Department of Computer Science Tokyo City University Tokyo Japan Department of Electronics and Control Engineering National Institute of Technology (KOSEN) Niihama College Ehime Japan

This paper deals with a design problem for a new event-trigger-based variable gain controller which achieves consensus for multi-agent systems (MASs) with the leader-follower structure. The proposed variable gain controller consists of stabilizing state feedback laws, state feedback inputs for consensus, and compensation inputs with adjustable parameters, and is designed by taking relative positions into account explicitly. In this paper, we show that sufficient conditions for the existence of the proposed formation control system are given in terms of Linear Matrix Inequalities (LMIs).

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Growth and magnetoelectric effect of epitaxial Co3Mn films on piezoelectric Pb(Mg1/3Nb2/3)O3-PbTiO3(001)

Growth and magnetoelectric effect of epitaxial Co3Mn films o...

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Magnetic Conference - Short Papers (INTERMAG Short Papers), IEEE International

作者： Yuichi Murakami Takamasa Usami Yu Shiratsuchi Yuya Sanada Shinya Yamada Ryoichi Nakatani Kohei Hamaya Department of Systems Innovation Graduate School of Engineering Science Osaka University Toyonaka Osaka Japan Center for Spintronics Research Network Graduate School of Engineering Science Osaka University Toyonaka Osaka Japan Division of Materials and Manufacturing Science Graduate School of Engineering Osaka University Suita Osaka Japan Spintronics Research Network Division Institute for Open and Transdisciplinary Research Initiatives Osaka University Suita Osaka Japan

We explore epitaxial growth of metastable ferromagnetic Co 3 Mn films on piezoelectric Pb(Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 (001) (PMN-PT) substrates by molecular beam epitaxy. By tuning the termination of the PMN-PT surface and the growth temperature, thermodynamically metastable bcc and stable fcc/hcp phases can be distinctively formed. We find that the bcc-Co 3 Mn/PMN-PT structure expresses a relatively large converse magnetoelectric (CME) coupling coefficient (α E ) of 8 × 10 -6 s/m while the fcc/hcp-Co 3 Mn/PMN-PT one shows a small value less than 1 × 10 -6 s/m. This provides a possibility for achieving simultaneous demonstration of large CME effect and tunneling magnetoresistance one.

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Mitigating Undesirable Oscillatory Behavior in Barge-type Floating Offshore Wind Turbines through Oscillating Water Columns

Mitigating Undesirable Oscillatory Behavior in Barge-type Fl...

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IEEE PES Asia-Pacific Power and Energy engineering Conference (APPEEC)

作者： Payam Aboutalebi Dong Trong Nguyen Aitor J. Garrido Izaskun Garrido Department of Automatic Control and Systems Engineering Engineering School of Bilbao - EIB/BIE Automatic Control Group - ACG University of the Basque Country - UPV/EHU Bilbao Spain Department of Marine Technology Norwegian University of Science and Technology (NTNU) Trondheim Norway

ISBN: (数字)9798350318098

ISBN: (纸本)9798350318104

This paper addresses the challenge of reducing undesired oscillations in barge-type floating wind turbines (FWTs) caused by wind and wave forces, which result in fluctuations in generator power and system oscillations. These oscillations can negatively impact the system’s lifespan, power generation, maintenance costs, and component stress. To mitigate these issues, oscillating water columns (OWCs) are integrated within the FWT substructure. A control strategy is proposed for the OWCs based on response amplitude operators, aiming to minimize oscillations in a 5 MW wind turbine structure. A considered case study is conducted for above-rated wind speeds to evaluate the effectiveness of the controllers and to compare the performance of an uncontrolled FWT against a controlled FWT integrated with OWCs. The findings demonstrate the efficacy of the control strategy in pitch oscillations reducing for 29.9% and generated power fluctuations reducing for 23.03% and highlight the advantages of integrating OWCs in floating offshore wind turbines.

关键词： Vibrations Fluctuations Wind speed Switches Wind power generation Valves control systems

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