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International Conference on Signal Processing Proceedings (ICSP)

作者： Yan Tang Zhijin Zhao Xueyi Ye Shilian Zheng Lijun Wang School of Communication Engineering Hangzhou Dianzi University Hangzhou China State Key Lab of Information Control Technology in Communication System The 36th Research Institute of China Electronics Technology Group Corporation Jiaxing China

ISBN: (数字)9781728144801

ISBN: (纸本)9781728144818

To solve the performance deterioration of jamming recognition method based on deep learning in the case of small sample set, a jamming recognition method based on AC-VAEGAN is presented. Interference signal time-frequency diagrams are used as the small sample training set. AC-VAEGAN network is designed by modifying the structure of ACGAN network, that is, adding the core idea of VAE in the ACGAN network, so that the latent space of a continuous and meaningful sample set can be obtained through the encoder. By combining of regularization loss, reconstruction loss, source loss and classification loss, loss functions of three parts of AC-VAEGAN are obtained, and the three parts are trained to make the AC-VAEGAN network more efficient. The simulation results show that when the jamming-to-noise ratio is -10dB~10dB, the AC-VAEGAN network has a higher correct recognition rate for the five kinds of jamming than ACGAN and CNN networks in the case of small sample datasets.

关键词： Jamming Interference Time-frequency analysis Convolution Feature extraction Training Deep learning

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Simulation and analysis of high-reliability braking system of aircraft based on self-feed energy nonsimilar margin

Simulation and analysis of high-reliability braking system o...

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CSAA/IET International Conference on Aircraft Utility systems 2020, AUS 2020

作者： Wang, Xiyu Shang, Yaoxing Hu, Haiying Qiu, Binghui Teng, Fengjian Zhang, Hao Jiao, Zongxia Liu, Xiaochao School of Automation Science and Electrical Engineering Beihang University Beijing100191 China AVIC Jiangxi Hongdu Aviation Industry Group Company Ltd Nanchang330000 China Beijing Aeronautical Technology Research Center Beijing100076 China Aerospace System Engineering Shanghai Shanghai201109 China Research Institute for Frontier Science Beihang University Beijing100191 China Science and Technology on Aircraft Control Laboratory Beihang University Beijing100191 China Ningbo Institute of Technology Beihang University Ningbo315800 China

ISBN: (纸本)9781839535635

As one of the key and important airborne systems, aircraft braking systems mostly use traditional centralized hydraulic sources. With the new concept of "multi-electric aircraft", the aircraft energy supply system has further branched. This article introduces an integrated hydraulic brake device. It does not require an on-board hydraulic source, and can directly convert the energy of the wheel rotation when the aircraft lands, to complete the braking function. Using Simulink/SimHydraulics module, a corresponding model of aircraft brake integrated hydraulic device was established. The function of this self-feeding hydraulic brake device was verified through simulation and analysis. This method provides a new way to further study the braking system. © 2020 Institution of Engineering and technology. All rights reserved.

关键词： Electric aircraft

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Integrated carbon and nitrogen management for cost-effective environmental policies in China

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Science (New York, N.Y.) 2025年第6751期388卷 1098-1103页

作者： Xin Xu Xiuming Zhang Yiyang Zou Tianrun Chen Jingfang Zhan Luxi Cheng Wilfried Winiwarter Shaohui Zhang Peter M Vitousek Wim de Vries Baojing Gu State Key Laboratory of Soil Pollution Control and Safety Zhejiang University Hangzhou China. College of Environmental and Resource Sciences Zhejiang University Hangzhou China. International Institute for Applied Systems Analysis Laxenburg Austria. Ministry of Education Key Laboratory of Environment Remediation and Ecological Health Zhejiang University Hangzhou China. College of Computer Science and Technology Zhejiang University Hangzhou China. Policy Simulation Laboratory Zhejiang University Hangzhou China. Institute of Environmental Engineering University of Zielona Góra Zielona Góra Poland. School of Economics and Management Beihang University Beijing China. Department of Earth System Science Stanford University Stanford CA USA. Wageningen University and Research Earth Systems and Global Change Group Wageningen Netherlands. Zhejiang Provincial Key Laboratory of Agricultural Resources and Environment Zhejiang University Hangzhou China.

Carbon and nitrogen are central elements in global biogeochemical cycles. To effectively manage carbon and nitrogen in China, we developed a comprehensive model for quantifying their fluxes, investigating their interplay across 16 human and natural subsystems. Between 1980 and 2020, nitrogen losses in China increased 2.3-fold and carbon emissions surged 6.5-fold. Integrated carbon and nitrogen management holds the potential for a 74% reduction in nitrogen losses to air and water and a 91% decrease in carbon emissions to the atmosphere by 2060. Compared with separate control of carbon or nitrogen, integrated management delivers an additional reduction of 1.8 million tons of nitrogen and 26.5 million tons of carbon by 2060, bringing out a 37% decrease in unit abatement cost and a net societal benefit of 1384 billion USD.

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Intelligent controller Design for MIMO systems using Model-Free control and LMI Approaches Applied on a Twin Rotor MIMO system

Intelligent Controller Design for MIMO Systems using Model-F...

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2019 Advances in Science and Engineering technology International Conferences, ASET 2019

作者： Younes, Younes Al Rabhi, Abdelhamid Al-Wedyan, Hussien Mechanical Engineering Faculty Higher Colleges of Technology Al Ain United Arab Emirates Modeling Information System Lab Control Vehicle Group University of Picardie Amiens France Higher Colleges of Technology Al Ain United Arab Emirates

ISBN: (纸本)9781538682715

This paper presents a restructured intelligent Model-Free control (MFC) algorithm that is designed for Multi-Input-Multi-Output (MIMO) system. In the literature, MFC is designed for Single-Input-Single-Output (SISO) system, where MIMO system is controlled by decomposing it into multi-SISO systems, and then MFC controller is applied on each one of them. The complexity of implementing multi-MFC controllers can be reduced by using the proposed MIMO-MFC controller. Moreover, the ultra-local model gain matrix in the MIMO-MFC structure will be computed using Linear Matrix Inequality (LMI) to ensure the system stability, while in the classical MFC technique, the controller gain is found empirically by the means of trial and error. The unmodeled system dynamics and the different uncertainties can be compensated by the MIMO-MFC where various feedback controllers are failing to cope with. A real-time comparison between the PID controller and the proposed MIMO-MFC controller will be implemented and tested on a Twin Rotor MIMO system (TRMS).The robustness of the proposed algorithm will be tested against an actuator-fault and induced-disturbance during the real-time tests to validate the claims about the control performance enhancements. © 2019 IEEE.

关键词： controllers

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Deep neural network based interpolation of sparse samples for time-dense power load forecasting

Deep neural network based interpolation of sparse samples fo...

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International Conference on Computer Engineering and Applications (ICCEA)

作者： Bo Li Ruifeng Zhao Jiangang Lu Kuo Xin Jinhua Huang Guanqiang Lin Jinrong Chen Xueyue Pang Shunxin Wu Electric Power Dispatching and Control Center of Guangdong Power Grid Co. Ltd. Guangzhou Guangdong China Electric Power Dispatching and Control Center of China Southern Power Grid Co. Ltd. Guangzhou Guangdong China Electric Power Research Institute of Guangdong Power Grid Co. Ltd. Guangzhou Guangdong China Huizhou Power Supply Bureau of Guangdong Power Grid Co. Ltd. Huizhou Guangdong China Foshan Power Supply Bureau of Guangdong Power Grid Co. Ltd. Foshan Guangdong China China Energy Engineering Group Guangdong Electric Power Design Institute Co. Ltd. Guangzhou Guangdong China State Key Laboratory of Power Equipment & System Security and New Technology School of Electrical Engineering Chongqing University Chongqing China

Large amount of power load data with high-sampling rate plays a crucial role in the training of time-dense power load forecasting network. However, in many cases, there is a large amount of data with low-sampling rate, which can't directly train a time-dense forecasting network. Therefore, this paper proposes a deep learning based dataset interpolation method, which uses the available high-sampling rate power load datasets to train a dataset interpolation network, then interpolates the low--sampling rate datasets with trained network to obtain high-sampling rate datasets, and finally uses the interpolated datasets for time-dense forecasting network training. The results show that the data obtained based on the method proposed in this paper fits the ground-truth closer than the traditional interpolation, and the results of the network trained based on this dataset are more accurate in the subsequent forecasting tasks.

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The benefit of Simulation Test Application on the Development of Autonomous Driving system

The benefit of Simulation Test Application on the Developmen...

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International Automatic control Conference

作者： Chien-Hung Yu Yi-Zhao Chen I-Chun Kuo Mechatronics and System Integration Technology Group Automotive Research and Testing Center (ARTC) Changhua County Taiwan(R.O.C) Electronic Control Technology Gourp Automotive Research and Testing Center (ARTC) Changhua County Taiwan(R.O.C)

ISBN: (数字)9781728171982

ISBN: (纸本)9781728171999

Advanced Driving Assistance system (ADAS) & Autonomous Driving system (ADS) are promptly developed as the demands on intelligent & secure transportation rise. For the mentioned system to get complex, the way to verify the function and evaluate the performance of it requires rigorous and comprehensive arrangement on test scenario settings. Meanwhile, the cost to build up the mentioned tests and the risks that the test personnel take may reach a new level if applying real car tests. To deal with these mentioned issues, the X-in-the-Loop(XiL) simulation test is adopted. In this paper, the benefit to apply simulation tests for ADS development will be introduced through the discussion about driving simulator appliance and test scenario construction. An ADS equipped with path following system and Automated Emergency Braking (AEB) system is set as a sample to be tested in the settled XiL to determine its efficacy of driving safety. According to the results, the requirements of ADS Development are met quite well - The system functionality is determined through each proposed tests. The cost of test equipment and hazards during the tests can thus be reduced.

关键词： Analytical models Transportation Hazards Personnel Automobiles Test equipment Autonomous vehicles

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Harmonic Current Detection and Reactive Power Compensation Method for Photovoltaic system Based on FBD Method 3

Harmonic Current Detection and Reactive Power Compensation M...

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3rd IEEE Conference on Energy Internet and Energy system Integration, EI2 2019

作者： Liu, Lifeng Xie, Dong Zhao, Duo Jia, Yanbing Yu, Yongjun Fan, Qiang Shen, Yong Qi, Weiwen State Grid Shaoxing Power Supply Company Shaoxing China Taiyuan University of Technology Shanxi Key Lab. of Power System Operation and Control Taiyuan China Shaoxing Jianyuan Power Group Co. Ltd Shaoxing China

ISBN: (纸本)9781728131375

In order to improve the equipment utilization of distributed photovoltaic power generation system, the harmonic and reactive currents generated by grid-connected photovoltaic system can be accurately detected and compensated. A phase-locked loop based on second-order generalized integrator (SOGI-PLL) is introduced into the traditional FBD current detection method to separate the positive and negative sequence components of unbalanced voltage and detect the phase and frequency of reference voltage more accurately. The simulation results show that the algorithm can reduce the computational complexity and increase the detection accuracy and steady-state performance. © 2019 IEEE.

关键词： Phase locked loops

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Research on Monitoring of Information Equipment Based on Zabbix for Power Supply Company

Research on Monitoring of Information Equipment Based on Zab...

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International Conference on Applied Machine Learning (ICAML)

作者： Yang Guo Shan Liu Chao Guo Guangjian Feng Gao State Grid Gansu Electric Power Economic Technology Research Institute Gansu La nzhou China Wuhan Maritime Communication Research Institute Wuhan China State Grid BaiYin Electric Power Supply Company Baiyin China Nari Group(State Grid Electric Power Research Institute) Nanjing China Beijing Kedong Electric Power Control System Co. Ltd Beijing China

ISBN: (纸本)9781665421263

In order to cope with the new challenges brought by the construction of the energy Internet to the information equipment operation and maintenance personnel of power supply companies, in this paper, combined with the current situation of power supply company informatization, an information equipment monitoring solution based on Zabbix open source architecture is proposed. Based on the Zabbix open source architecture, the first step is to design an example diagram of the Zabbix architecture. The second step is to determine the key points of monitoring and show the installation and deployment process. In the third step, we summarize the idea of applying Zabbix monitoring device configuration. The experimental results show that the method in this paper does provide an effective open source tool for the lean management of information equipment operation and maintenance.

关键词： Power supplies Urban areas Companies Production Machine learning Maintenance engineering Internet

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The importance of horizontal Poynting flux in the solar photosphere

arXiv

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arXiv 2022年

作者： Silva, Suzana S.A. Murabito, Mariarita Jafarzadeh, Shahin Stangliani, Marco Verth, Gary Ballai, Istvan Fedun, Viktor Plasma Dynamics Group Department of Automatic Control and Systems Engineering University of Sheffield Sheffield United Kingdom Department of Physics Aeronautics Institute of Technology São José dos Campos Brazil INAF - Osservatorio Astronomico di Roma Via Frascati33 Monte Porzio Catone RM 00078 Italy Max Planck Institute for Solar System Research Justus-von-Liebig-Weg 3 Göttingen37077 Germany Rosseland Centre for Solar Physics University of Oslo P.O. Box 1029 Blindern OsloNO-0315 Norway ASI Italian Space Agency Via del Politecnico snc Rome00133 Italy Plasma Dynamics Group School of Mathematics and Statistics University of Sheffield Sheffield United Kingdom

The electromagnetic energy flux in the lower atmosphere of the Sun is a key tool to describe the energy balance of the solar atmosphere. Current investigations on energy flux in the solar atmosphere focus primarily on the vertical electromagnetic flux through the photosphere, ignoring the Poynting flux in other directions and its possible contributions to local heating. Based on a realistic Bifrost simulation of a quiet-Sun (coronal hole) atmosphere, we find that the total electromagnetic energy flux in the photosphere occurs mainly parallel to the photosphere, concentrating in small regions along intergranular lanes. Thereby, it was possible to define a proxy for this energy flux based on only variables that can be promptly retrieved from observations, namely, horizontal velocities of the small-scale magnetic elements and their longitudinal magnetic flux. Our proxy accurately describes the actual Poynting flux distribution in the simulations, with the electromagnetic energy flux reaching 1010 erg cm−2 s−1. To validate our findings, we extended the analysis to SUNRISE/IMaX data. First, we show that Bifrost realistically describes photospheric quiet-Sun regions, as the simulation presents similar distributions for line-of-sight magnetic flux and horizontal velocity field. Second, we found very similar horizontal Poynting flux proxy distributions for the simulated photosphere and observational data. Our results also indicate that the horizontal Poynting flux in the observations is considerably larger than the vertical electromagnetic flux from previous observational estimates. Therefore, our analysis confirms that the electromagnetic energy flux in the photosphere is mainly horizontal and is most intense in localized regions along intergranular lanes. Copyright © 2022, The Authors. All rights reserved.

关键词： Magnetohydrodynamics

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Summary of Energy Storage systems and Renewable Energy Participation in AGC Research 3

Summary of Energy Storage Systems and Renewable Energy Parti...

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3rd IEEE Conference on Energy Internet and Energy system Integration, EI2 2019

作者： Yang, Caiming Tao, Hongfei Song, Xinrui Jia, Yanbing Xie, Dong Qi, Weiwen Yu, Yongjun Zhao, Feng State Grid Shaoxing Power Supply Company Shaoxing China Shaoxing Jianyuan Power Group Co. Ltd. Shaoxing China Taiyuan University of Technology Shanxi Key Lab. of Power System Operation and Control Taiyuan China

ISBN: (纸本)9781728131375

With the scarcity of fossil energy, the development of renewable energy is becoming more and more rapid. However, when new energy is integrated into the power grid, the inertia of the system is reduced and the stability of the system is lowered. This also poses a new challenge to frequency control, and energy storage as a technology that can quickly respond to system frequency changes is now widely concerned. This paper summarizes the domestic and international research status of energy storage and AGG capacity allocation and coordinated control through the influence of renewable energy on AGC. Finally, the development prospects of energy storage and participation in new energy integration into the power grid are prospected. © 2019 IEEE.

关键词： Energy storage

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