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UNIfied Conference of International Workshop on Defence Applications of Multi-Agent Systems, DAMAS 2023, International Conference on Maintenance engineering, IncoME-V 2023, International conference on the Efficiency and Performance engineering Network, TEPEN 2023

作者： Ma, Zeyu Wang, Hongjun Zhang, Mingliang Jiang, Fan Li, Bin School of Mechanical Electrical Engineering Beijing Information Science and Technology University Beijing100192 China Beijing International Science Cooperation Base of High-End Equipment Intelligent Perception Beijing100192 China Key Laboratory of Modern Measurement and Control Technology Ministry of Education Beijing100192 China Beijing Institute of Radio Measurement Beijing100854 China School of Information Management Beijing Information Science and Technology University Beijing100192 China

ISBN: (纸本)9783031494208

Considering issues such as low assembly efficiency and the inability of the assembly process index and product characteristics to be fully reflected in the traditional construction mechanical arm assembly process, the concept of a digital twin was introduced. The study involved the modeling and simulation technology of the construction mechanical arm assembly process based on the digital twin, and included some path optimization. Furthermore, according to the virtual model, a genetic algorithm was employed to optimize the path in Matlab. Additionally, the Hamiltonian cycle algorithm was utilized to enhance the efficiency of the robot and decrease the working time. Taking the assembly line of a screw arm as an example, it was demonstrated that the assembly simulation based on digital twinning can monitor the assembly process in real time. It can also optimize its configuration to improve assembly efficiency and implement an effective closed-loop feedback mechanism to enhance production efficiency, improve production quality, and reduce production cost. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： Cyber Physical System

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Ultrafast Metaphotonics

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Ultrafast Science 2024年第5期4卷 1-27页

作者： Tianyue Li Haotian Xu Mingcheng Panmai Tianhua Shao Geze Gao Fei Xu Guangwei Hu Shuming Wang Zhenlin Wang Shining Zhu National Laboratory of Solid-State Microstructures School of PhysicsCollege of Engineering and Applied SciencesNanjing UniversityNanjing 210093China School of Electrical and Electronic Engineering Nanyang Technological UniversitySingapore 639798Singapore Collaborative Innovation Center of Advanced Microstructures Nanjing 210093China Key Laboratory of Intelligent Optical Sensing and Manipulation Ministry of Education Nanjing 210093China

The exploration of optical and photonic phenomena,particularly the modulation of pulse signals and the ultrafast control of light fields at extreme temporal and spatial scales,substantially enhances our understanding of light-matter interactions and broadens the scope of potential applications inspired by metamaterials and *** this perspective,we highlight advancements in ultrafast metaphotonics by introducing ultrafast pulse shaping and control using *** begin with a detailed exposition of the principles of metasurfaces and evaluate their role in manipulating light fields in high-frequency and terahertz bands,emphasizing the importance of metasurfaces in ultrafast *** then present several methods for controlling the output response of metadevices using external physical fields or phase-change materials to achieve active ***,we anticipate the prospects of this field in terms of fundamental research and practical *** integration of these 2 disciplines will drive vibrant developments across multiple fields,including biology,chemistry,and materials science.

关键词： optical photonic phenomenaparticularly photonic phenomena modulation pulse signals ultrafast metaphotonics optical phenomena control light fields pulse signal modulation ultrafast pulse shaping

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Collaborative Fall Detection and Response Using Wi-Fi Sensing and Mobile Companion Robot

Collaborative Fall Detection and Response Using Wi-Fi Sensin...

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IEEE International Conference on Robotics and Biomimetics

作者： Yunwang Chen Yaozhong Kang Ziqi Zhao Yue Hong Lingxiao Meng Max Q.-H. Meng Shenzhen Key Laboratory of Robotics Perception and Intelligence Southern University of Science and Technology Shenzhen China Department of Electrical and Electronic Engineering SUSTech Shenzhen China School of System Design and Intelligent Manufacturing SUSTech Shenzhen China

ISBN: (数字)9798331509644

ISBN: (纸本)9798331509651

This paper presents a collaborative fall detection and response system integrating Wi-Fi sensing with robotic assistance. The proposed system leverages channel state information (CSI) disruptions caused by movements to detect falls in non-line-of-sight (NLOS) scenarios, offering non-intrusive monitoring. Besides, a companion robot is utilized to provide assistance capabilities to navigate and respond to incidents autonomously, improving efficiency in providing assistance in various environments. The experimental results demonstrate the effectiveness of the proposed system in detecting falls and responding effectively.

关键词： Navigation Biomimetics Collaboration Robot sensing systems Sensors Fall detection Wireless fidelity Monitoring Injuries Channel state information

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Digital Twin-Based Service System Platform

Digital Twin-Based Service System Platform

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TEPEN International Workshop on Fault Diagnostics and Prognostics, TEPEN-IWFDP 2024

作者： Ma, Zeyu Wang, Hongjun Zhang, Mingliang School of Mechanical Electrical Engineering Beijing University of Information Science and Technology Beijing100192 China Beijing International Science Cooperation Base of High-End Equipment Intelligent Perception Beijing100192 China Key Laboratory of Modern Measurement and Control Technology Ministry of Education Beijing100192 China Beijing Institute of Radio Measurement Beijing100854 China School of Information Management Beijing Information Science and Technology University Beijing100192 China

ISBN: (纸本)9783031702341

This paper discusses the integration and application of digital twin technology within the manufacturing sector, underscoring its pivotal role in advancing the Industry 4.0 revolution. Digital twin technology, which creates dynamic virtual replicas of physical systems, facilitates enhanced simulation, analysis, and optimization of real-world processes. The implementation of this technology, illustrated through examples from NASA and the U.S. Air Force Research laboratory, demonstrates its significant contributions across the entire product lifecycle, including design, manufacturing, service operation, and maintenance. The paper introduces a comprehensive framework for a digital twin-based production line service system, leveraging the Internet of Things (IoT) technology and flexible simulation to enable real-time user-application interaction, front-end operation responsiveness, and efficient data management. This system enhances operational efficiency, reduces time-to-market, and improves issue prediction and mitigation through virtual-real mapping and debugging. An application case using MongoDB highlights the technology's adaptability and effectiveness in managing complex data structures. The study concludes that digital twin technology is instrumental in driving smart manufacturing, innovation, and maintaining a competitive advantage in the evolving industrial landscape. key references provide a foundation for understanding the technology's development and application, reinforcing the digital twin's role as a transformative element in manufacturing. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2024.

关键词： NASA

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Dynamical Modeling and Dynamic Characteristics Analysisof a Coaxial Dual-Rotor System

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Journal of Dynamics, Monitoring and Diagnostics 2024年第2期3卷 99-111页

作者： Yubin Yue Hongjun Wang Shenglun Zhang China Academy of Machinery Science and Technology Group Co. Ltd.BeijingChina School of Mechanical and Electrical Engineering Beijing Information Science and Technology UniversityBeijingChina Key Laboratory of Modern Measurement and Control Technology Ministry of EducationBeijing Information Science and Technology UniversityBeijingChina Beijing International Science and Technology Cooperation Base of High-end Equipment Intelligent Perception and Control Beijing Information Science and Technology UniversityBeijingChina

The dual-rotor structure serves as the primary source of vibration in aero-engines. Understanding itsdynamical model and analyzing dynamic characteristics, such as critical speed and unbalanced response, arecrucial for rotor system dynamics. Previous work introduced a coaxial dual-rotor-support scheme for aeroengines,and a physical model featuring a high-speed flexible inner rotor with a substantial length-to-diameter ratiowas designed. Then a finite element (FE) dynamic model based on the Timoshenko beam elements and rigid bodykinematics of the dual-rotor system is modeled, with the Newmark method and Newton–Raphson method used forthe numerical calculation to study the dynamic characteristics of the system. Three different simulation models,including beam-based FE (1D) model, solid-based FE (3D) model, and transfer matrix model, were designed tostudy the characteristics of mode and the critical speed characteristic of the dual-rotor system. The unbalancedresponse of the dual-rotor system was analyzed to study the influence of mass unbalance on the rotor system. Theeffect of different disk unbalance phases and different speed ratios on the dynamic characteristics of the dual-rotorsystem was investigated in detail. The experimental result shows that the beam-based FE model is effective andsuitable for studying the dual-rotor system.

关键词： coaxial dual-rotor system dynamical modeling dynamic characteristics analysis rotor dynamics

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Multimodal Emotion Recognition Based on Multi-Scale Facial Features and Cross-Modal Attention 26

Multimodal Emotion Recognition Based on Multi-Scale Facial F...

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26th International Conference on Industrial Technology, ICIT 2025

作者： Bao, Chengao Chen, Luefeng Li, Min Wu, Min Pedrycz, Witold Hirota, Kaoru School of Automation China University of Geosciences Wuhan430074 China School of Automation Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education China University of Geosciences Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan430074 China University of Alberta Department of Electrical and Computer Engineering EdmontonABT6R 2G7 Canada Tokyo Institute of Technology Yokohama226-8502 Japan Tokyo Institute of Technology Tokyo226-8502 Japan

ISBN: (纸本)9798331521950

A multi-modal emotion recognition method based on facial multi-scale features and cross-modal attention (MS-FCA) network is proposed. The MSFCA model improves the traditional single-branch ViT network into a two-branch ViT architecture by using classification tokens in each branch to interact with picture embeddings in the other branch, which facilitates effective interactions between different scales of information. Subsequently, audio features are extracted using ResNet18 network. The cross-modal attention mechanism is used to obtain the weight matrices between different modal features, making full use of inter-modal correlation and effectively fusing visual and audio features for more accurate emotion recognition. Two datasets are used for the experiments: eNTERFACE'05 and REDVESS dataset. The experimental results show that the accuracy of the proposed method on the eNTERFACE'05 and REDVESS datasets is 85.42% and 83.84% respectively, which proves the effectiveness of the proposed method. © 2025 IEEE.

关键词： Modal analysis

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Control strategy for the rotor position angle of permanent magnet synchronous motor based on error extended state observer

Control strategy for the rotor position angle of permanent m...

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Chinese Control and Decision Conference, CCDC

作者： Lixiang Ma Susu Yu Bingyou Liu Anhui Institute of Information Technology Wuhu China College of Electrical Engineering Anhui Polytechnic University Key Laboratory of Advanced Perception and Intelligent Control of High-End Equipment Ministry of Education Wuhu China

In order to solve the problems of strong coupling, variable parameters and nonlinearity of permanent magnet synchronous motor (PMSM), an expanded state observer based on error is proposed in this paper to achieve fast response, accurate tracking and strong anti-disturbance control performance of the rotor position and angle of PMSM. Firstly, a new nonlinear function is designed to replace the nonlinear function of the extended state observer (ESO) in the traditional active disturbance rejection controller (ADRC). Secondly, based on the improved nonlinear function, the structure of ESO is improved according to the error principle. Finally, the position and Angle control system based on PMSM is simulated. Simulation results show that the ADRC based on error ESO has better response speed, tracking accuracy and anti-disturbance performance than the traditional ADRC.

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Design and Research on Flapping Mechanism of Biomimetic Albatross 2

Design and Research on Flapping Mechanism of Biomimetic Alba...

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2022 2nd International Conference on advanced Materials and Mechatronics, ICAMM 2022

作者： Zhang, Haiming Liu, Zhenzhong Tianjin Key Laboratory for Advanced Mechatronic System Design and Intelligent Control School of Mechanical Engineering Tianjin University of Technology Tianjin300384 China National Demonstration Center for Experimental Mechanical and Electrical Engineering Education Tianjin University of Technology China

In order to solve the problems of low flying efficiency, poor aerodynamic performance of wing and short flying time distance existing in the research of flapping wing aircraft, a kind of albatron-like flapping wing structure with higher flying efficiency is proposed in this paper. The functions of bird wing flutter, folding and gliding are realized by two degrees of freedom control respectively. First, the flying characteristics of albatross are analyzed and the flying characteristics suitable for albatross are summarized. Propose design requirements for bionic design objectives;The bionic structure design is carried out by referring to the physical structure of wing and the flight motion law, and the key parameters such as the size and angle of connecting rod mechanism are analyzed, calculated and optimized. A clamping mechanism is designed to achieve gear stuck in order to achieve gliding kinetic energy. The three-dimensional model of the flapping wing mechanism is built by solid works, and the motion analysis is carried out by using Motion plug-in. The analysis results of key-point parameters are output, which verifies the movement law and requirements of the mechanism to achieve the design objectives. © 2022 Institute of Physics Publishing. All rights reserved.

关键词： Wings

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Adaptive Virtual Synchronous Generator Control Strategy with Inertia Supporting Ability Assessment 10

Adaptive Virtual Synchronous Generator Control Strategy with...

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10th International Conference on Information Technology, Computer, and electrical engineering, ICITACEE 2023

作者： Song, Min Zhang, Jieming Ke, Song Liang, Zhu Gao, Yifan Yang, Jun Lin, Xiaoming Tang, Jianlin Zhaoqing Power Supply Bureau Guangdong Power Grid Co. Ltd Zhaoqing China Wuhan University School of Electrical Engineering and Automation Wuhan China Electric Power Research Institute CSG Guangdong Provincial Key Laboratory of Intelligent Measurement and Advanced Metering of Power Grid Guangzhou China

ISBN: (纸本)9798350322729

The frequency response of the power system is changing because of the inverter-based generator connection. To depict a more realistic frequency characteristic, an adaptive virtual synchronous generator (VSG) control strategy including the inertia supporting assessment index is proposed. The virtual inertia in VSG can be adjusted according to the frequency response process. And the droop coefficient is changed proportionally. Besides, the inertia supporting assessment index Fd is introduced to judge the FR results so that the operator can choose the optimal control parameter sets. The simulation results verified the accuracy and applicability of the proposed method. The method can also help to research on the frequency response and inertia estimation in the power system with high proportion power electronics. © 2023 IEEE.

关键词： Frequency response

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Robust Control of Feeding Speed in Coal Seam Drilling Process Considering Borehole Friction

Robust Control of Feeding Speed in Coal Seam Drilling Proces...

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2024 China Automation Congress, CAC 2024

作者： Liu, Xiao Chen, Luefeng Lu, Chengda Fan, Haipeng Wu, Min Pedrycz, Witold School of Automation The Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems The Engineering Research Center of Intelligent Technology for Geo-Exploration Ministry of Education China University of Geosciences Wuhan430074 China Department of Electrical and Computer Engineering University of Alberta EdmontonABT6G 2R3 Canada Systems Research Institute Polish Academy of Sciences Warsaw00-901 Poland Department of Computer Engineering Istinye University Sariyer Istanbul34396 Turkey

ISBN: (纸本)9798350368604

During the coal seam drilling process, the drill string is subject to compressive deformation, compounded by unpredictable variations in formation hardness and borehole wall friction, leading to challenges in maintaining a stable feeding speed. This paper presents a novel approach by introducing uncertain parameters to describe the effects of formation hardness and borehole wall friction. Drill string axial movement model is modeled as a polyhedral system based on a lumped parameter representation. To meet industrial performance requirements, we design a robust H∞ controller to achieve consistent feeding speed control. Our simulation results demonstrate the controller’s effectiveness in ensuring system stability despite fluctuations in formation hardness and drill string friction. © 2024 IEEE.

关键词： Coal deposits

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