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6th IEEE Conference on Energy Internet and Energy System Integration, EI2 2022

作者： Yang, Huan Cai, Dongsheng Bamisile, Olusola Li, Jian Zhang, Zhenyuan Huang, Qi Chengdu University of Technology School of Nuclear Technology and Automation Engineering Chengdu China University of Electronic Science and Technology of China Sichuan Provincial Key Lab of Power System Wide-Area Measurement and Control Chengdu China

ISBN: (纸本)9798350347159

In the context of carbon neutrality, the power industry is becoming the main battlefield of carbon emission reduction. However, the low-carbon transformation of energy structure is a complex long-term task, it needs to be analyzed in combination with the actual situation. This paper is based on the microgrid in the grid connection mode, considering microgrid power output and carbon emission constraints. An optimal model is proposed to reduce carbon emission cost, the optimal economic operation, and build a low-carbon scheduling model of a microgrid system. In this paper, the improved multi-objective particle swarm optimization algorithm is used to solve the problem. Finally, the simulation results verify the effectiveness of the model and the superiority of the improved algorithm. © 2022 IEEE.

关键词： Emission control

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Bayesian Framework for Multi-User Cooperative Radio SLAM 35

Bayesian Framework for Multi-User Cooperative Radio SLAM

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35th IEEE International Symposium on Personal, Indoor and Mobile Radio communications, PIMRC 2024

作者： Que, Hang Yang, Jie Du, Tao Xia, Shuqiang Wen, Chao-Kai Jin, Shi Southeast University National Mobile Communications Research Laboratory Nanjing211189 China Southeast University Frontiers Science Center for Mobile Information Communication and Security Nanjing210096 China Southeast University Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education Nanjing210096 China Zte Corporation Shenzhen518001 China State Key Laboratory of Mobile Network and Mobile Multimedia Technology Shenzhen518001 China Institute of Communications Engineering National Sun Yat-sen University Kaohsiung804 Taiwan

ISBN: (纸本)9798350362244

The advancement of millimeter-wave communication technology heralds new sensing capabilities. By leveraging channel multipath parameter estimates, we can harness simultaneous localization and mapping (SLAM) for precise user equipment (UE) localization and radio map construction in 6 G communication systems. Particularly in multi-UE scenarios, SLAM empowers base stations to amalgamate the local radio maps of various UEs efficiently. This study introduces a novel Bayesian framework specifically designed for multi-UE SLAM, complemented by a tailored factor graph. We also unveil a two-stage multi-UE SLAM algorithm. Our simulation results reveal that this algorithm substantially enhances radio map construction accuracy by 4 8. 5 % and UE localization accuracy by 13.5 %, outperforming single-UE cases. Moreover, the algorithm demonstrates remarkable adaptability to environmental changes, showcasing its potential for long-term evolution in dynamic settings. © 2024 IEEE.

关键词： Long Term Evolution (LTE)

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Structural design and performance test of venturi steam trap with flow rate adaptive adjustment

Structural design and performance test of venturi steam trap...

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2022 International Conference on Intelligent Transportation, Big Data and Smart City, ICITBS 2022

作者： Li, Meifang Lu, Xuxiang Liu, Rui Hu, Qingyun Ding, Haixia Changsha University of Science and Technology School of Energy and Power Engineering Changsha410114 China Changsha Yie Measurement and Control Equipment Co. Ltd Changsha410023 China

ISBN: (纸本)9781665497213

Aiming at the shortcomings of existing venturi steam traps in practical application, a new type of venturi steam trap with self-adaptive flow rate was proposed. The structure of the venturi steam trap has the characteristics of automatic drainage and good drainage effect, small size, low failure rate and long service life. Of venturi steam hydrophobic internal parts structure design theory, the new type of venturi tube throat diameter was determined and the expansion period of Angle and length, using FLUENT software to the new designed venturi steam trap are simulated, and compared with the original venturi steam drain structure carries out a comparative analysis on the simulation results, the simulation results show that: The effect of hydrophobicity is more obvious when the venturi tube is extended. The new venturi steam trap was cast and tested on the spot. The test results showed that the experimental results were highly consistent with the theoretical results, and the new Venturi steam trap could meet the technological requirements. © 2022 IEEE.

关键词： Steam separators and traps

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Asynchronous State Estimator Design for Markov Switched Systems with Incomplete Probabilities and Redundant Channels

Asynchronous State Estimator Design for Markov Switched Syst...

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第42届中国控制会议

作者： Haiyang Chen Fangzheng Gao Xueyi Mao School of Control Science and Engineering Tiangong University School of Automation Nanjing Institute of Technology Publicity Department Nanjing Communications Institute of Technology

This paper is concerned about the H∞ asynchronous state estimator design for Markov switched systems(MSSs)with incomplete transition probabilities and redundant channels.A hidden Markov chain(HMC) is introduced to characterize the asynchronous degree between the state estimator mode and the system *** an asynchronous full-order state estimator is devised for the ***,by Lyapunov functional and stochastic analysis,new criteria are derived such that the augmented system consisting of the target system and state estimator is H∞ stochastically finite-time *** that,with matrix decoupling technique,a design algorithm is obtained in form of linear matrix inequalities(LMIs).Finally,the practical one-link robotic manipulator is utilized to validate the developed results.

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A Static Feature Point Extraction Algorithm for Visual-Inertial SLAM

A Static Feature Point Extraction Algorithm for Visual-Inert...

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2022 Chinese Automation Congress, CAC 2022

作者： Zhang, Hanxuan Huo, Ju Sun, Wei Xue, Muyao Zhou, Jianbao Harbin Institute of Technology School of Electrical Engineering and Automation Harbin China Technology Research Institute Shanghai Space Propulsion Shanghai China Harbin Nuoxin University of Technology Measurement and Control Technology Co. Ltd Harbin China

ISBN: (纸本)9781665465335

Aiming at the fact that most simultaneous localization and mapping (SLAM) methods are fragile in dynamic environment, a static feature point extraction algorithm for visual-inertial SLAM is proposed. Firstly, the distance from feature matching to transformation matrix is calculated by cleverly combining inertial measurement unit (IMU) data and visual information. Secondly, a static probability model for distinguishing feature point categories is established based on the binomial logistic regression model. These categorical feature points are used in subsequent algorithms to select more stable data associations. Finally, the algorithm is integrated into the ORBSLAM-3 system, and extensive experiments are performed on the OpenLORIS-Scene public dataset and real world to verify the performance of the integrated system. The results show our algorithm not only maintains the high-precision localization performance of the original system in the static environment, but also improves the localization accuracy of the original system in the dynamic environment. © 2022 IEEE.

关键词： Extraction

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Investigation into phantom downlinks and development of a prevention algorithm in rotary steerable system

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Petroleum 2021年第3期7卷 349-355页

作者： Fei Li Shaanxi Key Laboratory of Measurement and Control Technology for Oil and Gas Wells Xi’an Shiyou UniversityXi’an710065China School of Electronic Engineering Xi’an Shiyou UniversityXi’an710065China

This paper investigated the failure cause of phantom downlinks of a flow rate detection mechanism in a rotary steerable system and developed a prevention *** is the process of controlling a drilling tool from the surface by sending commands to *** drillers send downlinks to the rotary steerable system to adjust steering parameters to achieve the desired well *** downlink demodulation of downhole tools is achieved through the measurement of flow rate and correlation of waveform with predefined command models;downlink acceptance is based on the correlation *** case study revealed that phantom downlinks were due to the variation of turbine rotation speed,which was the result of alternator load changes.A prevention algorithm of conducting a signal energy check was proposed and *** algorithm can successfully prevent phantom downlinks that are usually of low-level energy and only accept authentic *** work improved the downlinking reliability of the rotary steerable *** methodology can be further applied to other downlink demodulation mechanisms using collar speed or pressure measurement.

关键词： Downlink Demodulation Drilling Rotary steerable system Energy check

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Joining Edge-Enabled Metaverse Services with Network Externality: A Stackelberg Game Approach

Joining Edge-Enabled Metaverse Services with Network Externa...

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2023 IEEE International Conference on Metaverse Computing, Networking and Applications, MetaCom 2023

作者： Jiang, Yuna Kang, Jiawen Niyato, Dusit Ge, Xiaohu Xiong, Zehui Xu, Minrui Deng, Ruilong Huazhong University of Science and Technology School of Electronic Information and Communications Wuhan China Guangdong University of Technology School of Automation Guangzhou China Nanyang Technological University School of Computer Science and Engineering Singapore Singapore University of Technology and Design Pillar of Information Systems Technology and Design Singapore Zhejiang University State Key Laboratory of Industrial Control Technology Hangzhou China Shenzhen Huazhong University of Science and Technology Research Institute China

ISBN: (纸本)9798350333336

The metaverse is defined as a three-dimensional virtual-real fusion network focused on social connection. Edge computing can empower the metaverse by providing computing resources to realize real-time motion tracking, visual or auditory rendering and virtual scene dynamic change at the edge of networks. Users enjoy the immersive experience provided by the Metaverse Service Provider (MSP), and interact through digital avatars in the virtual world by requesting metaverse services. In this paper, we formulate the edge computing resources pricing, metaverse service rendering bitrate pricing and request problem in the metaverse. Especially, we model the interactions among edge servers, the MSP and Metaverse Service Users (MSUs) as a hierarchical three-stage Stackelberg game. The problem of joining edge-enabled metaverse services is also studied with the consideration of network externality, including the network effect and congestion effect. Based on the backward induction method, we derive the optimal computing resources pricing of edge servers, rendering bitrate pricing of the MSP, and rendering bitrate requests of MSUs. We also prove the existence and uniqueness of the Stackelberg game equilibrium. Simulation results show that the network effect can bring more positive utilities to entities when the social tie coefficient among MSUs is higher. Besides, all entities in the edge-enabled metaverse are affected negatively by the congestion effect. © 2023 IEEE.

关键词： Edge computing

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Rydberg-Atom Terahertz Heterodyne Receiver with Ultrahigh Spectral Resolution

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Chinese Physics Letters 2024年第8期41卷 17-21页

作者： Zhenyue She Xiaojie Zhu Yayi Lin Xianzhe Li Xiaolin Yang Yanfei Shang Yuqin Teng Haitao Tu Kaiyu Liao Caixia Zhang Xiaohong Liu Jiehua Chen Wei Huang Key Laboratory of Atomic and Subatomic Structure and Quantum Control(Ministry of Education) School of PhysicsSouth China Normal UniversityGuangzhou 510006China Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials South China Normal UniversityGuangzhou 510006China Guangdong-Hong Kong Joint Laboratory of Quantum Matter Frontier Research Institute for PhysicsSouth China Normal UniversityGuangzhou 510006China GPETR Center for Quantum Precision Measurement South China Normal UniversityGuangzhou 510006China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430071China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Atomic Frequency Standards Innovation Academy for Precision Measurement Science and TechnologyChinese Academy of SciencesWuhan 430071China Wuhan Institute of Quantum Technology Wuhan 430206China

Terahertz heterodyne receivers with high sensitivity and spectral resolution are crucial for various ***,we present a room-temperature atomic terahertz heterodyne receiver that achieves ultrahigh sensitivity and frequency *** a signal frequency of 338.7 GHz,we obtain a sensitivity of 2.88±0.09V·cm^(−1)·Hz^(−1/2) for electric field *** calibrated linear dynamical range spans approximately 89 dB,ranging from−110 dBV/cm to−21 dBV/*** demodulate a 400 symbol stream encoded in 4-state phase-shift keying,demonstrating excellent phase detection *** scanning the frequency of the local oscillator,we realize a terahertz spectrometer with Hz level frequency *** resolution is more than two orders of magnitude higher than that of existing terahertz *** demonstrated terahertz heterodyne receiver holds promising potential for working across the entire terahertz spectrum,significantly advancing its practical applications.

关键词： magnitude holds resolution

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Dual-Band Flexible Terahertz Sensor Based on Rotated Metamaterial Structure

Dual-Band Flexible Terahertz Sensor Based on Rotated Metamat...

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2023 IEEE MTT-S International Wireless Symposium, IWS 2023

作者： Wang, Dongxu Xu, Kai-Da School of Information and Communications Engineering Xi'an Jiaotong University Xi'an China Science and Technology on Electromechanical Dynamic Control Laboratory Xi'an China East China Normal University State Key Laboratory of Precision Spectroscopy Shanghai200241 China

ISBN: (纸本)9798350336535

In this article, a terahertz flexible metamaterial sensor with dual-band operating characteristics is introduced. The gold metamaterial array is arranged on the top surface of a polyimide film, while the structure is made up of a rotated structure with spiral-shaped strips. Two resonances occur at 0.37 and 1.13 THz with outstanding polarization insensitivity. The metamaterial sensor also has sensitive refractive index sensing properties, with sensitivities of 0.1 THz/RIU and 0.3 THz/RIU, respectively, at the two operating bands. This work shows potential applications in refractive index and nesticide sensing. © 2023 IEEE.

关键词： Metamaterials

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Lightweight Vision Transformer for Small Data Sets 38

Lightweight Vision Transformer for Small Data Sets

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38th Youth Academic Annual Conference of Chinese Association of Automation, YAC 2023

作者： Fang, Wenxing Su, Yanxu Institutes of Physical Science and Information Technology Anhui University Hefei China School of Artificial Intelligence Anhui University Hefei230601 China Southeast University Key Laboratory of Measurement and Control of Complex System of Engineering Ministry of Education Nanjing210096 China

ISBN: (纸本)9798350303636

With the rapid development of Transformers in the field of computer vision, models based on Transformers have become highly competitive architectures in the area. Although variants of Transformer models have achieved increasing accuracy on image classification tasks, the size of the training set and the number of parameters required by the models have increased dramatically. When dealing with small datasets, such models face problems such as overfitting and undergeneralization, leading to poor accuracy on the test set. We propose a new lightweight vision transformer (LVT) to address these issues. We reconstructed the backbone network, which learns the relationship between pixels through local window self-attention and global self-attention computation. We also use the attention pooling approach to fuse the token sequences generated by the backbone network more meticulously. We trained on the CIFAR-10 and CIFAR-100 datasets from scratch and compared them with a modern convolutional neural network. The experimental results show that LVT outperforms the modern convolutional neural network in terms of accuracy and efficiency. On the test set of CIFAR-10, we have obtained an accuracy of 96.83%, which indicates that our model can effectively solve the problems facing the training of small datasets and has a wide range of application prospects. © 2023 IEEE.

关键词： lightweight pooling self-attention windows

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