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Deep Learning Based Automatic Charging Identification and Positioning Method for Electric Vehicle

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Computer Modeling in Engineering & Sciences 2023年第9期136卷 3265-3283页

作者： Hao Zhu chao sun Qunfeng Zheng Qinghai Zhao School of Mechanical and Electrical Engineering Qingdao UniversityQingdao266071China School of Mechanical Engineering Beijing Institute of TechnologyBeijing100081China National Engineering Research Center for Intelligent Electrical Vehicle Power System Qingdao UniversityQingdao266071China

Electric vehicle charging identification and positioning is critically important to achieving automatic *** terms of the problem of automatic charging for electric vehicles,a dual recognition and positioning method based on deep learning is *** method is divided into two parts:global recognition and localization and local recognition and *** the specific implementation process,the collected pictures of electric vehicle charging attitude are classified and *** is trained with the improved YOLOv4 networkmodel and the corresponding detectionmodel is *** contour of the electric vehicle is extracted by the BiSeNet semantic segmentation *** minimum external rectangle is used for positioning of the electric *** on the location relationship between the charging port and the electric vehicle,the rough location information of the charging port is *** automatic charging equipment moves to the vicinity of the charging port,and the camera near the charging gun collects pictures of the charging *** model is detected by the Hough circle,the KM algorithmis used for featurematching,and the homography matrix is used to solve the *** results show that the dual identification and location method based on the improved YOLOv4 algorithm proposed in this paper can accurately locate the charging *** accuracy of the charging connection can reach 80%.It provides an effective way to solve the problems of automatic charging identification and positioning of electric vehicles and has strong engineering practical value.

关键词： Electric vehicle automatic charging identification and positioning deep learning

Analysis and evaluation of electromagnetic vibration and noise in permanent magnet synchronous motor with rotor step skewing

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Science China(Technological Sciences) 2019年第5期62卷 839-848页

作者： DONG Qichao LIU XinTian QI HongZhong sun chao WANG YanSong School of Mechanical and Automotive Engineering Shanghai University of Engineering Science Guangzhou Automobile Group CO. LTD Automotive Engineering Institute

In this paper, a multi-physics simulation model capable of electromagnetic noise prediction is established, and the effectiveness of the established simulation model in predicting and evaluating electromagnetic noise is verified. Based on the verified motor model, a rotor step skewing model which can affect electromagnetic noise is proposed, and the influence of the skewing angle on electromagnetic noise is investigated in detail. By studying the spectral characteristics of the low-order radial magnetic force which has a great influence on electromagnetic noise, the distribution of electromagnetic noise characteristics of the permanent magnet synchronous motor(PMSM) with or without the rotor step skewing is compared and analyzed. Therefore, it lays a technological foundation for predicting and suppressing the electromagnetic vibration noise of electric vehicle(EV) driving motor in the electromagnetic design.

关键词： PMSM electromagnetic noise step skewing multi-physics simulation model spectrum analysis

Automatic Navigation for Rat-Robots with Modeling of the Human Guidance

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Journal of Bionic Engineering 2013年第1期10卷 46-56页

作者： chao sun Nenggan Zheng Xinlu Zhang Weidong Chen Xiaoxiang Zheng Qiushi Academy for Advanced Studies (QAAS) Zhejiang University Hangzhou 310027 P. R. China College of Computer Science and Technology Zhejiang University Hangzhou 310027 P. R. China Department of Biomedical Engineering Zhejiang University Hangzhou 310027 P. R. China

A bio-robot system refers to an animal equipped with Brain-Computer Interface （BCI）, through which the outer stimulation is delivered directly into the animal＇s brain to control its behaviors. The development ofbio-robots suffers from the dependency on real-time guidance by human operators. Because of its inherent difficulties, there is no feasible method for automatic con- trolling of bio-robots yet. In this paper, we propose a new method to realize the automatic navigation for bio-robots. A General Regression Neural Network （GRNN） is adopted to analyze and model the controlling procedure of human operations. Com- paring to the traditional approaches with explicit controlling rules, our algorithm learns the controlling process and imitates the decision-making of human-beings to steer the rat-robot automatically. In real-time navigation experiments, our method suc- cessfully controls bio-robots to follow given paths automatically and precisely. This work would be significant for future ap- plications of bio-robots and provide a new way to realize hybrid intelligent systems with artificial intelligence and natural biological intelligence combined together.

关键词： bio-robot rat-robots brain-computer interface automatic navigation

Sea Cucumber-like Polyaniline Nanofibers Synthesized by Aqueous Solution Method

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Journal of Materials Science & Technology 2010年第1期26卷 39-44页

作者： Baoyun Liu Li Liu Nanlin Shi Jun Gong chao sun State Key Laboratory for Corrosion and Protection Institute of Metal Research Chinese Academy of Sciences 72 Wenhua Road Shenyang 110016 China Graduate School of Chinese Academy of Sciences Beijing 100039 China

The preparation of polyaniline nanofibers in aqueous solution was studied as functions of the concentrations and ratios of reactants. The morphology and microstructure of polyaniline nanofibers are affected by the concentrations and proportions of the reactants. A special kind of sea cucumber-like polyaniline nanofibers can be prepared under control of reaction conditions. Secondary growth is the formation mechanism. In addition, the bulk electrical conductivity of these sea cucumber-like polyaniline nanofibers was higher than that of other common polyaniline nanofibers.

关键词： Polyaniline Nanofiber Aqueous solution method Morphology Electrical conductivity

Effect of Heat Treatment on the Microstructure and Residual Stresses in (Ti,Al)N Films

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Journal of Materials Science & Technology 2011年第5期27卷 385-392页

作者： Ving Yang Shengsheng Zhao Jun Gong Xin Jiang chao sun State Key Laboratory of Corrosion and Protection Institute of Metal Research Chinese Academy of SciencesShenyang 110016 China Instituteof Materials Engineering University of Siegen Paul-Bonatz-Str. 9-11 Siegen 57076 Germany

（Ti,AI）N films were fabricated by arc ion plating （ALP） and then annealed within a range of temperatures from 200 to 500℃ for 30 rain in vacuum. The results indicate that the average residual stresses decrease slightly from -5.84 to -4.98 GPa with increasing annealing temperature. The stress depth distribution evolves from a sharp ＂bell＂ shape to a mild ＂bell＂ shape, suggesting a more uniform stress state in the annealed films. The microstructure of the films was also investigated in detail. The as-deposited film consists of fine columnar crystals with an amorphous phase at the interface. During heat treatment, the columnar subgrain growth was observed; meanwhile, the phenomenon of crystallization has been identified at the interface. Further more, the relationship between the residual stresses and the microstructure of the films was explored and highlighted. In addition, there is no hardness degradation of the films during heat treatment.

关键词： Arc ion plating Heat treatment Microstructure Stress distribution (Ti,AI)N

TiAlN/Cu Nanocomposite Coatings Deposited by Filtered Cathodic Arc Ion Plating

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Journal of Materials Science & Technology 2017年第1期33卷 111-116页

作者： Lei Chen Zhiliang Pei Jinquan Xiao Jun Gong chao sun institute of metal research chinese academy of sciencesShenyang 110016China

TiAIN]Cu nanocomposite coatings with Cu concentration of 0-1.4 at.% were deposited on the high- speed steel （HSS） substrates by filtered cathodic arc ion plating technique. The chemical composition, microstructure, morphology, adhesion strength, mechanical and tribological properties of the TiAIN/Cu coatings were characterized and analyzed. The results reveal that the coating structure and properties depend on not only the Cu concentration, hut also the deposition condition. The addition of Cu significantly decreases the grain size and weakens the texture in the TiAlN/Cu coatings. With increasing the Cu concentration, the coating hardness decreases slightly from 30.7 GPa of the pure TiAlN coating to 28.5 GPa of the TiAlN/Cu coating with 1.4 at,% Cu. All the TiAlN/Cu coatings present sufficient adhesion strength. In addition, the existing state of additive Cu in the TiAlN/Cu coatings is also investigated.

关键词： TiAlN TiAIN/Cu Nanocomposite coating Filtered cathodic arc ion plating Co-deposition

Low complexity MIMO sonar imaging using a virtual sparse linear array

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Journal of Systems Engineering and Electronics 2016年第2期27卷 370-378页

作者： Xionghou Liu chao sun Yixin Yang Jie Zhuo Yina Han School of Marine Science and Technology Northwestern Polytechnical University State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences

A multiple-input multiple-output（MIMO） sonar can synthesize a large-aperture virtual uniform linear array（ULA） from a small number of physical elements. However, the large aperture is obtained at the cost of a great number of matched filters with much heavy computation load. To reduce the computation load, a MIMO sonar imaging method using a virtual sparse linear array（SLA） is proposed, which contains the offline and online processing. In the offline processing, the virtual ULA of the MIMO sonar is thinned to a virtual SLA by the simulated annealing algorithm, and matched filters corresponding to inactive virtual elements are removed. In the online processing, outputs of matched filters corresponding to active elements are collected for further multibeam processing and hence, the number of matched filters in the echo processing procedure is effectively reduced. Numerical simulations show that the proposed method can reduce the computation load effectively while obtaining a similar imaging performance as the traditional method.

关键词： multiple-input multiple-output(MIMO) sonar simulated annealing sonar imaging sparse arrays

Ptpn22 Arg>Trp Polymorphism Improves Macrophage-Mediated Adipocyte Homeostasis

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Biomedical and Environmental Sciences 2021年第3期34卷 241-246页

作者： LI Mei Hang sun chao sun Yuan chao NIU Yu Juan WU Chuan Hong POLYCHRONAKOS Constantin The Biomedical Sciences Institute of Qingdao University(Qingdao Branch of SJTU Bio-X Institutes) Qingdao UniversityQingdao 266000ShandongChina Endocrine Genetics Laboratory Research Institute of the McGill University Health CentreMontreal H4A 3J1QCCanada Animal Science Department Northwest A&F UniversityYangling 712100ShaanxiChina Zhejiang MaiDaGene Technology Cov Ltd. Zhoushan 316100ZhejiangChina

Protein tyrosine phosphatase nonreceptor type22(PTPN22),which encodes an intracellular phosphatase protein Lyp,is preferentially expressed in hematopoietic and immune cells.

关键词： PTPN22 hematopoietic stasis

Hot Corrosion Behavior of a Cr-Modified Aluminide Coating on a Ni-Based Superalloy

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Acta Metallurgica Sinica(English Letters) 2014年第4期27卷 627-634页

作者： Duoli Wu Sumeng Jiang Qixiang Fan Jun Gong chao sun State Key Laboratory of Corrosion and Protection Institute of Metal ResearchChinese Academy of Sciences

A Cr-modified aluminide coating is prepared on a Ni-based superalloy using arc ion plating and subsequent pack cementation *** corrosion behavior of the Cr-modified aluminide coating exposed to molten Na2SO4/K2SO4（3：1） or Na2SO4/NaCl（3：1） salts at 900 °C in static air are evaluated as well as the aluminide *** results indicate that compared with the aluminide coating,the anti-corrosion properties of the Cr-modified aluminide coating in the both salts are improved,which should be attributed to the beneficial effect of the Cr in the *** corrosion mechanism of the Cr-modified aluminide coating,especially the role of Cr in the mixture salt corrosion,is discussed.

关键词： Arc ion plating Pack cementation aluminizing Superalloy Cr-modified aluminide coating Hot corrosion