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2nd International Conference on Smart Vehicular Technology, Transportation, Communication and Applications, VTCA 2018

作者： Liu, Ling Wang, Ping Zhang, Bo Wei, Wei School of Software and Microelectronics Peking University Beijing102600 China Beijing National Railway Research and Design Institute of Signal and Communication Group Co. Ltd. Beijing100070 China Beijing Engineering Technology Research Center of Operation Control Systems for High Speed Railways Beijing100070 China National Engineering Research Center for Software Engineering Peking University Beijing102600 China Key Laboratory of High Confidence Software Technologies Peking University Beijing102600 China

ISBN: (纸本)9783030045814

As China has become the country with the longest operating mileage and largest construction scale of high-speed railway (HSR) in the world, how to improve the operational excellence and customer satisfaction draws increasing attention. In order to further optimize the allocation of transport resource and improve the transportation efficiency of HSR, a coordinated control method using the idea of virtual coupling (VC) based on multi agent system (MAS) is proposed in this paper firstly. At last, the efficiency and feasibility of proposed model and method are demonstrated using a simulation case, which shows that the coordinated control model based on MAS can not only ensure the safety of operation, but also improve the efficiency of a whole train group. © Springer Nature Switzerland AG 2019.

关键词： Multi agent systems

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Photovoltaic active power control based on BESS smoothing

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IFAC-PapersOnLine 2019年第4期52卷 443-448页

作者： Linjun Shi Ladier Fa Haoqing Zhu Jiangfeng Shi Feng Wu Weiguo He Chun Wang Kwang Y. Lee Keman Lin College of Energy and Electrical Engineering Hohai University Nanjing Jiangsu 211100 CHINA State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems China Electric Power Research Institute Nanjing Jiangsu 210024 CHINA Department of Electrical Engineering Baylor University Waco TX 76798 USA

The power fluctuation of photovoltaic (PV) is harmful to power systems, so the battery energy storage system (BESS) was applied to smooth power fluctuation in PV. At present, the main ways to get configuration of BESS are low-pass filter and spectrum compensation, which have some drawbacks. In this paper, a method that combines empirical mode decomposition (EMD) with wavelet analysis (WA) is proposed to get grid-connected active power expectation of PV properly. Based on simulation of PV output, the minimum sizing of BESS is determined by different batteries’ state-of-charging (SOC) and efficiency. Comparing traditional low-pass filter and spectrum compensation, this method not only acquires the capacity of BESS accurately, but also improves the effect to smoothing power fluctuation of PV effectively. Finally, a case is proposed to verify correctness of the theory.

关键词： Photovoltaic output Sizing energy storage capacity Empirical mode decomposition (EMD) Wavelet analysis

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Reliability Analysis of Manufacturing Machine with Degradation and Low-quality Feedstocks

Reliability Analysis of Manufacturing Machine with Degradati...

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Advanced Reliability and Maintenance Modeling (APARM), Asia-Pacific International Symposium on

作者： Zhenggeng Ye Zhiqiang Cai Hui Yang Department of Industrial Engineering Northwestern Polytechnical University Xi’an China School of Mechanical Engineering Northwestern Polytechnical University Xi’an P.R. China Ministry of Industry and Information Technology Key Laboratory of Industrial Engineering and Intelligent Manufacturing Northwestern Polytechnical University Xi’an P.R. China Complex Systems Monitoring Modeling and Control Laboratory in the Harold Pennsylvania State University (University Park) State College PA USA The Harold and Inge Marcus Department of Industrial and Manufacturing Engineering The Pennsylvania State University (University Park) State College USA Department of Industrial and Manufacturing Engineering Pennsylvania State University (University Park) State College PA USA

ISBN: (数字)9781728171029

ISBN: (纸本)9781728171036

Machine reliability is one major concern in manufacturing industries, which is affected by interior degradation and outside shocks simultaneously. Low-quality feedstocks, as one typical kind of shocks, may arrive randomly during the operation of a machine. However, due to the instability of environment and manufacturing factors, low-quality feedstocks may arrive in clusters in some specific batches. In this paper, we first proposed a reliability evaluation model for the repairable machine, accounting for machine degradation and shocks caused by low-quality feedstocks. Then, the cluster arrival of low-quality feedstocks is modeled by the Hawkes point process with the properties of self-exciting and history dependent. Moreover, considering the degradation and shocks, the mixture failure rate of a machine is modeled. Further, the expectation of remaining lifetime is derived. Finally, the simulation experiment is implemented to compare the performance between the machine when the arrival intervals of low-quality feedstocks follow the Poisson point process and the Hawkes point process. Experimental results show the effectiveness of the proposed model for machine reliability analysis.

关键词： Electric shock Degradation Maintenance engineering Mathematical model Manufacturing Reliability engineering

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Anomaly Detection of Predicted Frames Based on U-Net Feature Vector Reconstruction

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Journal of Physics: Conference Series 2020年第1期1627卷

作者： Yong Qiang Shumin Fei Yiping Jiao Liuwen Li Key Laboratory of Measurement and Control of CSE (Ministry of Education) School of Automation Southeast University Nanjing 210096 China School of Computer Engineering Jinling Institute of Technology Nanjing 211169 China

Anomaly detection in surveillance video scenes is one of the current research hotspots. Due to the small sample collection of anomalous events, the lack of negative sample labeling data training in anomaly detection research adds a lot of difficulties. Therefore, we adopt the method of unsupervised training and improve the method of anomaly detection based on the reconstruction of the potential features of the predicted frame and ground truth based on u-net. We reduce the reconstruction error between the potential features of u-net in the predicted frame and the potential features of the real frame. Then through other constraints, the reconstruction error of the entire predicted frame is minimized according to the generative adversarial training. Due to the use of normal behavior sample training, when the abnormal behavior is detected, the reconstruction error value exceeds the set threshold to judge whether abnormal behavior occurs in the surveillance video. Experiments prove that our improved method is effective and accurate.

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Design of wireless mobile environment monitoring system based on spherical amphibious robots 15

Design of wireless mobile environment monitoring system base...

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15th IEEE International Conference on Mechatronics and Automation, ICMA 2018

作者： Guo, Shuxiang Yang, Xujie Guo, Jian Li, Chunying Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems and Biomedical Robot Laboratory Tianjin University of Technology Binshui Xidao Tianjin391 China Intelligent Mechanical Systems Engineering Department Faculty of Engineering Kagawa University 2217-20 Hayashi-cho Takamatsu761-0396 Japan

ISBN: (纸本)9781538660720

A wireless mobile environmental monitoring system based on spherical amphibious robots is proposed in this paper, which is used to monitor environmental data in *** control interface is designed by using labVIEW to display the collected environmental *** XBee module is used to realize the wireless communication between robot and PC. The robot is equipped with temperature and humidity sensors, pressure sensors and high-definition cameras to collect environmental information. An adaptive weighted fusion algorithm is proposed for deal with the multi source data collected by multiple robots and improve the accuracy of *** this paper, the underwater kinematic model of amphibious robot is established, and the proportional-integral-derivative(PID) controller is designed to control the depth of spherical amphibious robot. The simulation and experimental results verified the effectiveness of the system. © 2018 IEEE.

关键词： Robots

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Abnormal Behavior Detection Based on the Potential Field Forces in Surveillance Scenarios

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Journal of Physics: Conference Series 2020年第1期1487卷

作者： Yong Qiang Shumin Fei Liuwen Li Key Laboratory of Measurement and Control of CSE (Ministry of Education) School of Automation Southeast University Nanjing 210096 China School of Computer Engineering Jinling Institute of Technology Nanjing 211169 China

In a social environment, there is a natural mutual force between people. This paper proposes a method for detecting group abnormal behavior based on the potential field method. The movement of a pedestrian is described as the movement towards the target under the combined action of several forces. Forces on pedestrians include the attractive force for themselves and the repulsive force between pedestrians. By calculating the resultant force between them, the behavior of pedestrians is judged according to a set threshold. It is verified through experiments on public data sets that our method has high accuracy and robustness.

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A design scheme of adaptive switching neural control with uncertain nonlinearity and external disturbance

A design scheme of adaptive switching neural control with un...

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Chinese Intelligent systems Conference, CISC 2018

作者： Yu, Lei Hou, Junyi Huang, Jun Zhang, Yongju Zhang, Wei School of Mechanical and Electric Engineering Soochow University Suzhou China Collaborative Innovation Center of Industrial Energy-Saving and Power Quality Control Anhui University Hefei China Key Laboratory of Intelligent Perception and Systems for High-Dimensional Information of Ministryof Education Nanjing University of Science and Technology Nanjing China Special Equipment Safety Supervision Inspection Institute of Jiangsu Province Wujiang Branch Wujiang China

ISBN: (纸本)9789811322877

In this paper, we concern with the robust adaptive tracking control problem using neural networks for switched nonlinear systems with uncertain nonlinearity and external disturbance. The hypothesis condition that the sign of control gain is known has been relaxed by the proposed control strategy. RBF neural networks (NNs) are utilized to model the unknown nonlinear functions and a robust adaptive neural tracking control method is recommended to enhance the switching the system robustness. Based on switched multiple Lyapunov function strategy, we have derived the adaptive updated control law and the appropriate switching law. It is shown that the technique proposed is able to guarantee that the resulting closed-loop system is asymptotically stable in the Lyapunov sense such that the system output tracking error performance can be well obtained. The effectiveness of the presented control method is demonstrated by the simulation results. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Radial basis function networks

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Smart home system based on open source hardware development platform

Smart home system based on open source hardware development ...

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Chinese Intelligent systems Conference, CISC 2018

作者： Yu, Lei Li, Changdi Ji, Haina Miao, Tianyuan Zhang, Yongju Zhang, Wei School of Mechanical and Electric Engineering Soochow University Suzhou China Key Laboratory of Intelligent Perception and Systems for High-Dimensional Information of Ministry of Education Nanjing University of Science and Technology Nanjing China Collaborative Innovation Center of Industrial Energy-Saving and Power Quality Control Anhui University Hefei China Special Equipment Safety Supervision Inspection Institute of Jiangsu Province Wujiang Branch Wujiang China

ISBN: (纸本)9789811322877

Smart home products have quickly integrated into our lives. The smart home comprehensively utilizes advanced various hybrid smart technologies to organically combine home electrical devices related to the home life field and regards each electrical device as a subsystem. This article selected an open source hardware platform to design a smart home system. It combines long-distance communication and short-distance communication, and wired communication and wireless communication combine to enable mobile phones to control home appliances anytime and anywhere. This set of smart home control management system has the characteristics of low price, superior performance, and has a very large market size and potential. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Domestic appliances

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Vibrational relaxation in compressible isotropic turbulence with thermal nonequilibrium

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Physical Review Fluids 2020年第4期5卷 044602-044602页

作者： Qinmin Zheng Jianchun Wang Bernd R. Noack Hui Li Minping Wan Shiyi Chen Shenzhen Key Laboratory of Complex Aerospace Flows Center for Complex Flows and Soft Matter Research Department of Mechanics and Aerospace Engineering Southern University of Science and Technology Shenzhen 518055 China School of Power and Mechanical Engineering Wuhan University Wuhan 430072 China Institute for Turbulence-Noise-Vibration Interaction and Control Harbin Institute of Technology (Shenzhen) Shenzhen 518055 China LIMSI CNRS Université Paris-Saclay Bât 507 rue du Belvédère Campus Universitaire F-91405 Orsay France Institut für Strömungsmechanik und Technische Akustik Technische Universität Berlin Müller-Breslau-Straße 8 D-10623 Berlin Germany State Key Laboratory of Turbulence and Complex Systems Peking University Beijing 100871 China

As pioneered by Donzis and Maqui [J. Fluid Mech. 797, 181 (2016)] and Khurshid and Donzis [Phys. Fluids 31, 015103 (2019)], the compressible isotropic turbulence in thermal nonequilibrium is drawing attention in the fluid dynamics community. In the present study, the vibrational rate and the dissipation or production of vibrational energy fluctuation of compressible isotropic turbulence with solenoidal forcing in vibrational nonequilibrium are investigated using numerical simulations. The turbulent Mach number (Mt) is set to be 0.44 and 1.09, and the Taylor Reynolds number (Reλ) equals 98.58 approximately. The focus is on the effect of the normalized vibrational relaxation time (Kτ) and characteristic temperature (θv) on statistical features of the vibrational rate and the dissipation or production components of vibrational energy fluctuation. When Kτ is small (≲1.0), the average of normalized vibrational rate conditioned on the normalized dilatation is positive in the compression region and negative in the expansion region, enhanced with increase of compression and expansion level, respectively. It indicates that, on average, the energy transfers from translational-rotational to vibrational modes in the compression region and in the inverse direction in the expansion region. The conditional average of the normalized vibrational rate reduces with increase of Kτ, and is insensitive to θv. The joint probability density functions (PDFs) and conditional PDFs of the normalized vibrational rate are also analyzed, to reveal the effect of compression and expansion motions on the internal energy exchange between the translational-rotational and vibrational modes. The dissipation or production of vibrational energy fluctuation can result from effects of dilatation, thermal diffusion, and vibrational relaxation. The dissipation component due to thermal diffusion always weakens the vibrational energy fluctuation in both compression and expansion regions for the weakly and highl

关键词： Compressible flows Nonequilibrium & irreversible thermodynamics Turbulence

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Study on anode material of CoδFe1-δOx-Sm0.2Ce0.8O1.9 for solid oxide fuel cell

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Journal of Physics: Conference Series 2021年第1期2076卷

作者： Runze Dong Pu Yang Tianqi Shao Ruochen Wang Ping Li Dong Fu Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control Department of Environmental Science and Engineering North China Electric Power University Baoding 071003 PR China MOE Key Laboratory of Resources and Environmental Systems Optimization North China Electric Power University Beijing 102206 P.R. China

This paper mainly explores the anode properties of CoδFe1-δOx-Sm0.2Ce0.8O1.9 (SDC) (δ=0, 0.2, 0.5, 0.8, and 1) for solid oxide fuel cell (SOFC). The composite anode materials were synthesized by sol-gel method, and the XRD technique was used to characterize structural properties. After H2 reduction at 700 oC, the CoδFe1-δOx oxides were reduced to Co, Fe metal or Co-Fe alloy. The symmetric cells were fabricated with CoδFe1-δOx-SDC as the electrodes and SDC-carbonate as the electrolyte. At 700 oC, the symmetric cell with Co0.5Fe0.5Ox-SDC electrodes showed the lowest polarization resistance and the symmetric cell with Co0.2Fe0.8Ox-SDC showed the largest polarization resistance.

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