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3rd Asian Conference on Artificial Intelligence Technology, ACAIT 2019

作者： Shi, Hengliang Zheng, Lintao Sun, Shibao Zhang, Lei Wang, Lei Postdoctoral Station of Control Science and Engineering of Henan University of Science and Technology Kaiyuan Avenue 263# Luoyang China Computer Department School of Information Engineering Henan University of Science and Technology Kaiyuan Avenue 263 Luoyang China Safety Testing Center Luoyang Branch of Henan Research Institute of Safety Testing for Special Equipment Wangcheng Avenue 40# Luoyang China

In lifting equipment, the quality of wire rope is directly related to production safety. In this study, infrared image of wire rope is captured by industrial camera, and the background modelling method based on location binary pattern is proposed to extract foreground of moving wire rope. Then the outline of wire rope is extracted by Canny edge detection, and the diameter of wire rope is corrected by one-dimensional measuring method and direction fitting. Experiments show that this method can accurately extract the moving wire rope and can detect the diameter of the wire rope and locate abrasion. © 2020 Institution of engineering and Technology. All rights reserved.

关键词： Computer vision

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Effective presenting method for different driving styles based on hexagonal eye diagram applied in pay-how-you-drive vehicle insurance

Effective presenting method for different driving styles bas...

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IEEE International Conference on Big Data Analysis (ICBDA)

作者： Wei Nai Yijun Chen Yi Yu Fangqi Zhang Decun Dong Wenyi Zheng Postdoctoral Research Station of Control Science and Engineering Tongji University Shanghai China The Cooperative Center for Maglev and Rail Transit Operation Control System Tongji University Shanghai China Ministry of Education Tongji University Shanghai China School of Computer Science and Communication Engineering Jiangsu University Zhenjiang Jiangsu China

ISBN: (纸本)9781467395922

Pay-how-you-drive (PHYD), which is an advanced product form in usage based insurance (UBI) for vehicle, takes not only driving habit and behavior into consideration in its actuary process, but geographical factors, sociological factors, psychological factors, and even meteorological factors as well. PHYD insurance product is supported by refinement and analysis based on raw driving data of insured vehicles, and the very analysis process, which is based on big data algorithms, helps to recognize the risk level of each driving behavior by finding the relationship between them. Even if studies on risk level determination have been done adequately, research on feedback and presenting of risk evaluation results for the drivers of insured vehicles have not been reported much. In this paper, an effective presenting method for different driving styles based on hexagonal eye diagram which can be applied in PHYD insurance based driver vehicle interface (DVI) has been proposed, six key style evaluation indices have been chosen in such eye diagram. Evaluation examples have shown that by employing different colors which represent the occurrence frequency of certain evaluation results in such eye diagram, the hexagonal eye diagram proposed can describe the most representative driving style for a certain insured vehicle, even if there might be style changing from time to time.

关键词： Vehicles Insurance Indexes Acceleration Smart phones Mathematical model Color

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Analysis on impact factors of travel speed and their countermeasures for Shanghai urban rail transit network

Analysis on impact factors of travel speed and their counter...

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International Conference on Wavelet Active Media Technology and Information Processing (ICWAMTIP)

作者： Jie Zhang Ying-Hui Fan Wei Nai Yi Yu Shanghai Shentong Metro Group Corporation Limited Shanghai China The Cooperative Center for Maglev and Rail Transit Operation Control System Tongji University Shanghai China Key Laboratory of Road and Traffic Engineering Tongji University Shanghai China Postdoctoral Research Station of Control Science and Engineering Tongji University Shanghai China

ISBN: (纸本)9781467382670

Urban rail transits in major cities in China are now forming complex networks due to the rapid development of themselves. Travel speed of urban rail transit network, which is an important index reflecting the service quality, has attracted much attention by those operation companies. Higher travel speed can surely lead to higher inventory turnover and less usage of trains. Till now, most related research have been only focused on the energy consumption oriented travel speed control or optimization. In this paper, based on a most representative case - Shanghai urban rail transit network which has more than 10 lines in it, the impact factors of travel speed has been comprehensively analyzed, including the performance of signal system and operation organization of all the lines; moreover, their countermeasures has also been proposed in detail.

关键词： Rails Energy consumption Organizations Acceleration Automobiles Velocity control Optimization

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Improved adaptive genetic algorithm and its application in function optimization

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Harbin Gongcheng Daxue Xuebao/Journal of Harbin engineering University 2007年第8期28卷 875-879页

作者： Chen, Ming-Jie Liu, Sheng Postdoctoral Research Station of Control Science and Engineering Harbin Institute of Technology Harbin 150001 China School of Automation Harbin Engineering University Harbin 150001 China

To speed up convergence rates and resolve local convergence issues in traditional adaptive genetic algorithms, an improved adaptive genetic algorithm was developed. According to the concentrating degree of fitness of the populations, a kind of adaptive crossover probability and mutation probability were designed in terms of three variables of maximal fitness, minimal fitness and average fitness of the populations, whereby the crossover probabilities and mutation probabilities of the whole populations could be adjusted.. Based on this, an improved adaptive genetic algorithm was developed. Simulation results prove that the new adaptive algorithm can converge faster than the unimproved algorithm and is highly effective at avoiding the premature convergence of the adaptive genetic algorithm.

关键词： Genetic algorithms

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Electromagnetic Protection Optimization of the Intelligent Electronic Devices Based on the Passive EMI Filter Design

Electromagnetic Protection Optimization of the Intelligent E...

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IEEE Conference on Energy Internet and Energy System Integration (EI2)

作者： Guanchen Liu Jintao Zhang Jianping Yuan Junjie Yang Weizhong Gao Qiang Yang Postdoctoral Research Station Cocultured by Zhejiang University and Powerchina Huadong Engineering Corporation Ltd. Hangzhou China Hangzhou Huachen Electric Power Control Co. Ltd. Powerchina Huadong Engineering Corporation Ltd. Hangzhou China College of Electrical Engineering Zhejiang University Hangzhou China

ISBN: (纸本)9781665434263

Passive EMI filter is an effective way to suppress high-frequency electromagnetic interference(EMI). This work takes the electronic current transformer acquisition card as the research prototype. In order to suppress the electrical fast transient/burst (EFT/B) applied at the signal input port of the acquisition card, this work proposed an optimal index to design a specific topology of the filter. Based on the high-frequency EFT/B, the optimal parameters of the EMI filter are calculated by applying nonlinear programming theory, and the designed EMI filter is verified through experiments.

关键词： Passive filters Electromagnetic interference Prototypes System integration Programming Information filters Filtering theory

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Alleviating effects and mechanisms of action of large-leaf yellow tea drinking on diabetes and diabetic nephropathy in mice

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Food Science and Human Wellness 2023年第5期12卷 1660-1673页

作者： Guangshan Zhao Jianyuan Teng Ruixia Dong Qiuyan Ban Lian Yang Kang Du Yifei Wang Hanlin Pu Chung S.Yang Zhe Ren Innovation Team of Food Nutrition and Safety Control College of Food Science&TechnologyHenan Agricultural UniversityZhengzhou 450002China Biology Postdoctoral Research Station Department of Cell BiologyCollege of Life Science and TechnologyJinan UniversityGuangzhou 510632China College of Horticulture Jinling Institute of TechnologyNanjing 211169China Department of Forestry and Technology Lishui Vocational and Technical CollegeLishui 323000China Department of Tea Science College of HorticultureHenan Agricultural UniversityZhengzhou 450002China Guangdong Provincial Engineering Center of Topical Precise Drug Delivery System School of PharmacyGuangdong Pharmaceutical UniversityGuangzhou 510006China Department of Chemical Biology Ernest Mario School of PharmacyRutgersThe State University of New JerseyPiscataway 08901USA International Joint Research Laboratory of Tea Chemistry and Health Effects Anhui Agricultural UniversityHefei 230036China

Our previous study found that large-leaf yellow tea(LYT)had interesting hypoglycemic activity in high-fat diet-induced obese mice and highly safety in healthy mice. To study the anti-diabetic potential of LYT, the present study further investigated the preventive effects and mechanisms of action of LYT administration on diabetes and diabetic nephropathy in high-fat diet plus streptozotocin-induced diabetic mice. Results showed that LYT infusions(1/100 and 1/50, m/V)as drinking fluid for 4 weeks reduced diabetic polydipsia and polyuria, enhanced glucose tolerance and insulin sensitivity, and lowered fasting blood glucose level. The underlying mechanisms involve downregulation of gluconeogenesis(lower protein levels of TXNIP and FBP and enzyme activity of FBP), upregulation of lipid catabolism(higher protein levels of CPT-1α and PPARα), downregulation of lipogenesis(lower protein level of SREBP-1), and modification of the structure and abundance of gut microbiota to modulate metabolic homeostasis. Moreover, LYT administration prevented diabetic nephropathy, possibly due to reduced glucose-caused osmotic diuresis and lowered levels of renal PKC-β2, NLRP3 as well as membrane PKC-α, AQP2 and glycosylated AQP2 proteins. Taken together, LYT exhibits the activities in alleviating diabetic symptoms, ameliorating glucose and lipid dysmetabolism and fatty liver, and preventing diabetic nephropathy in diabetic mice. These activities may be explored for the prevention and treatment of diabetes in humans.

关键词： Diabetes Glucose and lipid metabolism Gut microbiota Diabetic nephropathy Large-leaf yellow tea

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Review on simulated micro-gravity experiment systems of space robot

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Jiqiren/Robot 2009年第1期31卷 88-96页

作者： Xu, Wen-Fu Liang, Bin Li, Cheng Liu, Yu Qiang, Wen-Yi Institute of Space Intelligent System Harbin Institute of Technology Harbin 150001 China Postdoctoral Work-station Research Institute in Shenzhen Harbin Institute of Technology Shenzhen 518057 China Department of Control Science and Engineering Harbin Institute of Technology Harbin 150001 China

The characteristics of the simulated micro-gravity experiment system (SMGES) are introduced and the key problems are summarized. Six main realization methods for SMGES are introduced, including the experiment systems based on free falling objects, parabolic flight, air-bearing table, neutral buoyancy, suspension system and hardware-in-loop (HIL) simulator. The application scopes, advantages and disadvantages of each method are discussed and compared. Then we propose two realization concepts based on dynamic emulation and kinematic equivalence, and set up an experiment system to test and evaluate the key algorithms for path planning and control of space robot.

关键词： Motion planning

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Numerical Investigation of Flow Field Near the Exhaust Opening Indoor

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IOP Conference Series: Earth and Environmental Science 2019年第3期267卷

作者： Chanjun Meng Bo Yuan Chuan He Chunfu Xi Liangming Pan Key Laboratory of Low-grade Energy Utilization Technologies and Systems Chongqing University Chongqing 400044 China State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University Chongqing 400044 China Postdoctoral Research Station of Power Engineering & Engineering Thermophysics Chongqing University Chongqing 400044 China

Airflow field and effective region for pollution discharge were predicted around a circular flanged exhaust opening, three different turbulent models were employed to simulate airflow field near the exhaust opening indoor. Numerical results show that air velocity decreases gradually in radial direction and axis direction away from origin, and changes most dramatically at corner of the opening. The projection of velocity contour is similar to a semi-ellipse, but when the air velocity decreases, it gradually changes the hemisphere with larger outer radius. When the velocity is 2 m/s, the long axis of the semi-ellipse is 0.70 times the diameter of the exhaust port and the short axis is 0.45 times the diameter of the exhaust port. When the velocity is 0.3m/s, the diameter of the outlet is 1.60 times of that of the long axis and 1.55 times of that of the short axis. The effective area of pollutant emission is similar to the equivalent surface with velocity of 0.3m/s, and its shape is semi-elliptic.

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Numerical investigating flow characteristic of swirling turbulent round jet

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IOP Conference Series: Earth and Environmental Science 2019年第9期240卷

作者： B Yuan S Jia L M Pan Q L Wang J X Li J R Li Key Laboratory of Low-grade Energy Utilization Technologies and Systems Chongqing University Ministry of Education of PRC Chongqing 400044 State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University Chongqing 400044 Postdoctoral Research Station of Power Engineering & Engineering Thermophysics Chongqing University Chongqing 400044

Swirling waterjet, using swirling and cutting capacity of high velocity waterjet beam, is a kind of technology widely applied in foundation processing, tunnelling, coalbed methane mining, and etc. It is extremely complicated because the existence of high velocity gradient and swirling, nevertheless, knowing unsteady interior flow characteristic and flow pattern which tremendously affects cutting capacity of waterjet is what we concern about. In this article, computational fluid dynamics is utilized to study flow characteristics of swirling turbulent waterjet, convergent nozzle structure with swirling is chosen as prototype and investigational region is selected as waterjet flow could be fully developed, structured mesh and grid number independent is obtained, Reynolds stress turbulence model is employed and standard wall functions is chosen as the near-wall treatment, pressure boundary conditions are applied on inlet and outlet boundaries, the SIMPLE algorithm is employed to couple the pressure and velocity, and time step size and number is selected reasonably. According to numerical simulation results, statistical analysis method, comparative analysis method and dimensionless analysis method is used to analyse central line velocity attenuation, velocity profile of different axial and radial position, flow pattern and vorticity characteristics, influence of different swirling velocity is also investigated, cutting capacity and influence factor of high pressure swirling water jet is evaluated. It is valuable for application of CFD in swirling waterjet field and helpful for understanding interior filed of swirling waterjet flow, meanwhile, this work could also provide reference for further investigation and application about swirling waterjet.

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Analysis and reconstruction of waterjet characteristics in double-side wall confinement

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Journal of Physics: Conference Series 2018年第1期1064卷

作者： Bo Yuan Shuai Jia Quanlin Wang Changjun Meng Jiaxuan Li Liangming Pan Key Laboratory of Low-grade Energy Utilization Technologies and Systems Chongqing University Ministry of Education of PRC Chongqing China. State Key Laboratory of Coal Mine Disaster Dynamics and Control Chongqing University Chongqing China. Postdoctoral Research Station of Power Engineering & Engineering Thermophysics Chongqing University Chongqing China.

Water jet flow characteristics in double-side wall confined space is investigated, two-dimensional particle image velocimetry is performed on confined plane and unconfined plane, and using Proper orthogonal decomposition to perform dimensionality analysis, extract large-scale coherent structure and reconstruct flow field. Results illustrate that velocity and vorticity fluctuation distribution, mainly reflected in low-order modes, is seriously affected on account of a symmetrical double-wall existence; Reconstruction instantaneous velocity field by the first m modes saving 70% of turbulent kinetic energy, indicating that reconstructed velocity fluctuation fields can truly reflect original fields.

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