检索结果-内蒙古大学图书馆

2nd International Conference on Automation, robotics and Computer Engineering, ICARCE 2023

作者： Yang, Chengxu Sun, Xiangyu Liu, Gangfeng School of Mechatronics Engineering Harbin Institute of Technology Harbin China Harbin Institute of Technology State Key Laboratory of Robotics and System Harbin China

ISBN: (纸本)9798350308341

In this paper, for the requirements of image recognition and localization of the obstacles existing on the moving path in the inspection task of FAST cable inspection robot, the deep learning method is used to realize the recognition of multi-kind and multi-scale obstacles. The obstacles on FAST wire rope have not been identified before. By enhancing the data set and improving the network model, the recognition accuracy and speed are both improved, which meets the efficiency and accuracy requirements of obstacle detection on the wire rope, and provides help for the subsequent robot pace planning and overhaul tasks. © 2023 IEEE.

关键词： Inspection

来源：评论

学校读者我要写书评

暂无评论

A Comprehensive Vulnerable Line Identification Method for Distribution Network Consider-ing Cyber-physical Coupling 8

A Comprehensive Vulnerable Line Identification Method for Di...

引用

8th International Conference on Electrical, Mechanical and Computer Engineering, ICEMCE 2024

作者： Huang, Fei Mo, Fan Ouyang, Jinxin Dai, Jian Liu, Hongzhi Zhao, Junguang State Grid Chongqing Power Company Power Science Research Institute Power System Technology Department Chongqing400044 China Chongqing University State Key Laboratory of Power Transmission Equipment Technology Chongqing China State Grid Chongqing Electric Power Company Power System Technology Department Chongqing China

ISBN: (纸本)9798331506230

By identifying the key lines of the network and assessing the vulnerability of the distribution network, so as to effectively allocate security resources, the power supply reliability of the distribution network can be effectively improved. However, the definition of vulnerability assessment of the existing distribution network is relatively simple, and the high degree of interconnection between the information network and the physical network is not considered, and there is a lack of reliable indicators and methods for the identification of vulnerable lines in the cyber-physical system of the distribution network. Therefore, considering the energy supply characteristics of physical nodes to in-formation nodes, a cyber-physical system model of distribution network with distributed generators is established. In this paper, three kinds of vulnerable line identification indexes of the cyber-physical system of distribution network, namely line comprehensive degree, line comprehensive load impact vulnerability and line comprehensive fault vulnerability, are proposed. The example shows that the proposed method can consider the coupling characteristics of the cyber-physical system and the influence of distributed power generation, and can more comprehensively identify the vulnerable lines of the distribution network. © 2024 IEEE.

关键词： Power distribution networks

来源：评论

学校读者我要写书评

暂无评论

A Data-Driven Method for Ship Collision Risk Detection in Heavy Traffic Waters 14

A Data-Driven Method for Ship Collision Risk Detection in He...

引用

14th International Conference on Information Science and technology, ICIST 2024

作者： Lv, Haoran Mou, Junmin Zhang, Liang Li, Mengxia Chen, Pengfei School of Navigation Wuhan University of Technology Wuhan China State Key Laboratory of Maritime Technology and Safety Wuhan China Intelligent Transportation System Research Center Wuhan University of Technology Wuhan China

ISBN: (纸本)9798350353334

Intended to solve the problem of poor generalization of complex collision risk model, this paper proposes a novel collision risk model based on data-driven. Firstly, the main traffic pattern is clustered by Ordering Points to Identify the Clustering Structure algorithm. Afterwards, using probability statistics and mining the altering behaviors identify the abnormal behavior. And then, encounter situation and avoidance behaviors are identified by analyzing the relative motion characteristics of the two ships. Finally, by Kullback-Leibler dispersion and kernel density estimation methods, the key parameters are extracted from encounter data with avoidance behaviors. The collision risk model based on data-driven is constructed. To verify the effectiveness of the proposed method, the method is used in a heavy traffic area, the mouth of Yangtze River, China. The results show that the collision risk model based on data-driven can be more accurate. © 2024 IEEE.

关键词： Ships

来源：评论

学校读者我要写书评

暂无评论

Research on active equalization technology and simulation of battery modules 4

Research on active equalization technology and simulation of...

引用

4th International Conference on Electrical Engineering and Control Science, IC2ECS 2024

作者： Zhang, Qingjie Li, Xin Shao, Xuming Nari Technology Co. Ltd Nanjing China Nari Technology Co. Ltd State Key Laboratory of Technology and Equipment for Defense Against Power System Operational Risks Nanjing China

ISBN: (纸本)9798331510107

The principles and current situation of the active balancing technology between modules in the Battery Management system (BMS) of the energy storage power station is researched in this article. A typical solution for Matlab/Simulink simulation is used to verify and evaluate advantages and disadvantages of inter-module active balancing strategy. Through the simulation, the best inter-module balancing solution is determined, and the size of the balancing current is established. © 2024 IEEE.

关键词： MATLAB

来源：评论

学校读者我要写书评

暂无评论

Contact optimisation strategy for wafer-scale field-effect transistors based on two-dimensional semiconductors

引用

Journal of Materials Science & technology 2023年第2期133卷 230-237页

作者： Ling Tong Xiaojiao Guo Zhangfeng Shen Lihui Zhou Jingyi Ma Xinyu Chen Honglei Chen Yin Xia Chuming Sheng Saifei Gou Die Wang Xinyu Wang Xiangqi Dong Yuxuan Zhu Xinzhi Zhang David Wei Zhang Sheng Dai Xi Li Peng Zhou Yangang Wang Wenzhong Bao State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghai 200433China College of Biological Chemical Science and EngineeringJiaxing UniversityJiaxing 314001China Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center Institute of Fine ChemicalsSchool of Chemistry&Molecular EngineeringEast China University of Science and TechnologyShanghai 200237China State Key Laboratory of Surface Physics and Department of Physics Fudan UniversityShanghai 200433China

Two-dimensional(2D)semiconductors can be utilized to continually miniaturize nanoscale electronic ***,achieving a practical solution for satisfying electrical contact with 2D semiconductors remains *** this study,we developed a novel contact structure with transferred multilayer(t-ML)MoS 2 by integrating both edge and top *** in-situ plasma treatment for the edge of the MoS 2 channel and successive metal deposition,we achieved 16 times lower contact resistivity(22.8 kΩμm)than that of the top contacted *** thickness-dependent electrical measurement indicates that edge contact is highly effective with thick MoS 2 due to the alleviated current-crowding effect re-sulting from the small contact *** temperature-dependent transport measurement further confirms the effective minimization of the influence from the Schottky barrier and tunnelling ***,the simplified resistor network model and energy-band diagram were proposed to understand the carrier transport *** work provides a practical strategy for achieving excellent electrical contact between bulk metals and 2D semiconductors,paving the way for future large-scale 2D electronic devices.

关键词： Edge contact 2D materials Field-effect transistors Schottky barrier Contact resistance

来源：评论

学校读者我要写书评

暂无评论

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

引用

Frontiers of Mechanical Engineering 2021年第4期16卷 711-725页

作者： Yiwei LIU Shipeng CUI Yongjun SUN State Key Laboratory of Robotics and System Harbin Institute of TechnologyHarbin 150001China

The safety of human-robot interaction is an essential requirement for designing collaborative ***,this paper aims to design a novel variable stiffiiess actuator(VSA)that can provide safer physical human-robot interaction for collaborative *** A follows the idea of modular design,mainly including a variable stiffiiess module and a drive *** variable stiffiiess module transmits the motion from the drive module in a roundabout maimer,making the modularization of VS A *** the key component of the variable stiffiiess module,a stiffness adjustment mechanism with a symmetrical structure is applied to change the positions of a pair of pivots in two levers linearly and simultaneously,which can eliminate the additional bending moment caused by the asymmetric *** design of the doubledeck grooves in the lever allows the pivot to move freely in the groove,avoiding the geometric constraint between the ***,the VSA stiffiiess can change from zero to infinity as the pivot moves from one end of the groove to the *** facilitate building a manipulator in the future,an expandable electrical system with a distributed structure is also *** calibration and control experiments are performed to evaluate the physical performance of the designed *** results show that the VSA stiffiiess is close to the theoretical design ***,the VSA with a proportional-derivative feedback plus feedforward controller exhibits a fast response for stiffiiess regulation and a good performance for position tracking.

关键词： variable stiffiiess actuator variable stiffness module drive module symmetrical structure doubledeck grooves expandable electrical system

来源：评论

学校读者我要写书评

暂无评论

An integrated micromachined flexible ultrasonicinductive sensor for pipe contaminant multiparameter detection

引用

Microsystems & Nanoengineering 2024年第4期10卷 271-283页

作者： Zheng Yuan Xiaoyu Wu Zhikang Li Jiawei Yuan Yihe Zhao Zixuan Li Shaohui Qin Qi Ma Xuan Shi Zilong Zhao Jiazhu Li Shiwang Zhang Weixuan Jing Xiaozhang Wang Libo Zhao State Key Laboratory for Manufacturing Systems Engineering International Joint Laboratory for Micro/Nano Manufacturing and Measurement TechnologiesXi’an Jiaotong University(Yantai)Research Institute for Intelligent Sensing Technology and SystemXi’an Jiaotong UniversityXi’an 710049China School of Mechanical Engineering Xi’an Jiaotong UniversityXi’an 710049China School of Instrument Science and Technology Xi’an Jiaotong UniversityXi’an 710049China Shandong Laboratory of Yantai Advanced Materials and Green Manufacturing Yantai 265503China

Pipe contaminant detection holds considerable importance within various industries,such as the aviation,maritime,medicine,and other pertinent *** capability is beneficial for forecasting equipment potential failures,ascertaining operational situations,timely maintenance,and lifespan ***,the majority of existing methods operate offline,and the detectable parameters online are relatively *** constraint hampers real-time on-site detection and comprehensive assessments of equipment *** address these challenges,this paper proposes a sensing method that integrates an ultrasonic unit and an electromagnetic inductive unit for the real-time detection of diverse contaminants and flow rates within a *** ultrasonic unit comprises a flexible transducer patch fabricated through micromachining technology,which can not only make installation easier but also focus the sound ***,the sensing unit incorporates three symmetrical solenoid *** a comprehensive analysis of ultrasonic and induction signals,the proposed method can be used to effectively discriminate magnetic metal particles(e.g.,iron),nonmagnetic metal particles(e.g.,copper),nonmetallic particles(e.g.,ceramics),and *** inclusive categorization encompasses nearly all types of contaminants that may be present in a ***,the fluid velocity can be determined through the ultrasonic Doppler frequency *** efficacy of the proposed detection principle has been validated by mathematical models and finite element *** contaminants with diverse velocities were systematically tested within a 14mm diameter *** experimental results demonstrate that the proposed sensor can effectively detect contaminants within the 0.5−3mm range,accurately distinguish contaminant types,and measure flow velocity.

关键词： inductive holds ultrasonic

来源：评论

学校读者我要写书评

暂无评论

4D printing of direct-driven deformable wheel with multiple programmable configurations

引用

International Journal of Extreme Manufacturing 2025年第3期7卷 369-381页

作者： Huichun Tian Guanghao Chu Bin Zhou Dekai Zhou Jing Qiao Longqiu Li State Key Laboratory of Robotics and System Harbin Institute of TechnologyHarbin 150001People’s Republic of China Avic Shenyang Aircraft Corporation Shenyang 110850People’s Republic of China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001People’s Republic of China Zhengzhou Research Institute Harbin Institute of TechnologyZhengzhouHenan 450000People’s Republic of China

Conventional deformable wheel systems in robots and other mechatronic systems face significant challenges in achieving miniaturization,intelligence,and *** address these issues,we propose a novel integrated structural design method and four-dimensional printing strategy for deformable wheels capable of shaping among multiple programmable direct-driven deformation *** load-bearing capacity of the printed wheel is strengthened by employing deformed components in various locations and actuated ***,a novel analytical design method is presented to determine the structure,actuation,and deformation parameters of each component under complex coupled *** findings reveal that the designed wheel can transform into three different configurations,exhibiting desired deformations of 12.5%in the radial direction and 19.6%in the axial *** also demonstrates robust deformation behavior and structural stability under multi-directional *** integrating a terrain sensing system,the designed wheel exhibits highly adaptive deformation capabilities on various terrains,showing great potential for exploring complex environments.

关键词： 4D printing deformable wheel continuous fiber multifunctional structure system integration

来源：评论

学校读者我要写书评

暂无评论

A Multi-Source Domain Generalization Method for Bearing RUL Prediction Based on Time-Variant and Time-Invariant Feature Extraction 5

A Multi-Source Domain Generalization Method for Bearing RUL ...

引用

5th International Conference on Sensing, Measurement and Data Analytics in the Era of Artificial Intelligence, ICSMD 2024

作者： Deng, Zhengyu Xu, Zhen Xu, Juan Chen, Xing Ren, Qile School of Computer and Information Hefei University of Technology Hefei China State Key Laboratory of High-end Compressor and System Technology Hefei China Co. Ltd Shanghai China

ISBN: (纸本)9798331529192

Deep learning-based remaining useful life (RUL) prediction methods have demonstrated significant advantages due to their powerful feature representation capabilities. Although existing learning models have made progress in distinguishing between the time-varying and time-invariant characteristics of vibration signals, challenges remain in fully capturing these aspects, which can hinder their generalization performance. To address this issue, we propose a domain generalization method based on the extraction of time-varying and time-invariant features, tailored to the characteristics of bearing vibration time series signals. Firstly, Fourier transform and inverse Fourier transform are employed to isolate high-frequency features, obtaining both time-varying and time-invariant signals. The time-varying signals are then processed using an attention mechanism to extract time-varying features and learn the bearing degradation trend. Concurrently, the time-invariant signals are fed into an encoder-decoder structure to extract their invariant features. Finally, both sets of features are input into a Gate Recurrent Unit (GRU) module for RUL prediction. Experimental results across three tasks demonstrate that our model achieves excellent generalization capabilities. © 2024 IEEE.

关键词： Inverse transforms

来源：评论

学校读者我要写书评

暂无评论

Multi-physical Finite Element Modeling and Influencing Factor Analysis for Solder Layer Failure of SiC MOSFET Device 17th

Multi-physical Finite Element Modeling and Influencing Facto...

引用

17th Annual Conference of China Electrotechnical Society, CES 2022

作者： Yao, Ran Li, Hui Lai, Wei Li, Hanrui Duan, Zeyu Chen, Siyu Chen, ZhongYuan Li, Yaosheng State Key Laboratory of Advanced Power Transmission Technology Beijing Institute of Smart Energy Beijing102209 China State Key Laboratory of Power Transmission Equipment and System Security and New Technology Shapingba District Chongqing400044 China

ISBN: (纸本)9789819904075

Solder layer failure is one of the main failure modes of SiC MOSFET devices within To packaging. In this paper, the solder layer failure simulation and influencing factor analysis of SiC MOSFET devices are carried out based on the multi-physical field finite element modeling method. Firstly, the SiC MOSFET device multi-physical field simulation model is established based on the packaging structure of To-247–3, and the Computed Tomography test obtains the hole distribution of the SiC MOSFET device solder layer. Secondly, The stress distribution of the solder layer during the aging process of SiC MOSFET devices is analyzed, and the failure mechanism of the solder layer of the SiC MOSFET device is studied. Finally, the effect of different solder layer hole sizes on device performance is simulated, and the impact of different ambient temperatures and current levels on the failure performance of the solder layer failure of the SiC MOSFET device is analyzed. © 2023, Beijing Paike Culture Commu. Co., Ltd.

关键词： Failure (mechanical)

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：