检索结果-内蒙古大学图书馆

design and Control of a Coupling Mechanism-Based Prosthetic Hand

Journal of Shanghai Jiaotong university(science) 2010年第5期15卷 571-577页

作者：王新庆刘伊威姜力杨大鹏李楠刘宏黄海 State Key Laboratory of Robotics and System Harbin Institute of Technology Institute of Robotics and Mechatronics German Aerospace Center Key Laboratory of Science and Technology for National Defence of Autonomous Underwater Vehicle Harbin Engineering University

A five-fingered,multi-sensory and biomimetic hand is *** cambered palm is specially designed by utilizing the knowledge of *** position of each finger is arranged according to human hand *** finger with three phalanges could fulfill flexion-extension movement *** the fingers are designed using coupling link *** location of the thumb is designed by maximizing interaction area between the thumb and other *** opposite thumb could grasp along a cone surface,while maintaining its *** hardware architecture is divided into control system and human-machine interaction *** mechanical parts,sensors and motion control systems are integrated in the hand *** addition,a skin-like glove is designed,which makes the hand more *** to our primary experimental results,the hand can accomplish several grasp modes by applying an intuitive surface electromyography control *** success rate of 10 modes is up to 90%.

关键词： prosthetic hand coupling mechanism electromyography control support vector machine (SVM)

来源：评论

学校读者我要写书评

暂无评论

Effects of Inlet Conditions on the Two-Phase Flow Water Hammer Transients in Elastic Tube 23rd

Effects of Inlet Conditions on the Two-Phase Flow Water Hamm...

引用

23rd Pacific Basin Nuclear Conference, PBNC 2022

作者： Zhao, Zixiang Duan, Zhongdi Xue, Hongxiang Yuan, Yuchao Liu, Shiwen State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai China Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China Chengdu China

ISBN: (纸本)9789819910229

Two-phase flow water hammer events occur in the pipelines of the nuclear power systems and lead to transient and violent pressure shock to tube structures. For the sake of operation safety, the occurrence and severity of the two-phase water hammer should be carefully assessed. This paper presents a parameter analysis of the inlet conditions on the two-phase flow water hammer transients, with considering the elastic effect of the tube walls. A numerical model is established for the vapor-liquid two-phase flow based on the two-fluid six-equation modelling approach, with incorporating correlations and criterions for two-phase flow regime, interfacial interactions and heat transfer. The governing equations are transformed to matrix form expressed by characteristic variables, and solved using the splitting operator method and the total variation diminishing scheme. The accuracy of the model is verified against the experimental data in open literature. Then, the model is applied to investigate the effect of inlet velocity and inlet water temperature on the two-phase flow water hammer transients. The simulation results show that the increase of inlet velocity increases the pressure peak values and brings forward the onset of water hammer, and the increase of inlet temperature decreases the pressure shock. A comparison of the water hammer results between the elastic tube and rigid tube is further presented, and the effect of the elastic modulus on the water hammer is analyzed. The results also show that the pressure peak is largely affected by the tube diameter. © 2023, The Author(s).

关键词： Condensation

来源：评论

学校读者我要写书评

暂无评论

Stretchable multifunctional wearable system for real-time and on-demand thermotherapy of arthritis

引用

Microsystems and Nanoengineering 2025年第1期11卷 1-12页

作者： Liu, Zehan Wang, Xihan He, Yiyang Hong, Weiqiang Sun, Peng Liu, Weitao Ye, Dong Yang, Zhuoqing Wang, Xuewen Wu, Mengxi Wang, Liding Liu, Junshan State Key Laboratory of High-performance Precision Manufacturing Dalian University of Technology Liaoning Dalian116024 China Key Laboratory for Micro/Nano Technology and System of Liaoning Province Dalian University of Technology Liaoning Dalian116024 China State Key Laboratory of Digital Manufacturing Equipment and Technology Huazhong University of Science and Technology Wuhan430074 China National Key Laboratory of Science and Technology on Micro and Nano Fabrication School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai200240 China Institute of Flexible Electronics Northwestern Polytechnical University Xi’an710072 China

Thermotherapy is a conventional and effective physiotherapy for arthritis. However, the current thermotherapy devices are often bulky and lack real-time temperature feedback and self-adjustment functions. Here, we developed a multifunctional wearable system for real-time thermotherapy of arthritic joints based on a multilayered flexible electronic device consisting of homomorphic hollow thin-film sensors and heater. The kirigami−serpentine thin-film sensors provide stretchability and rapid response to changes in environmental temperature and humidity, and the homomorphic design offers easy de-coupling of dual-modal sensing signals. Based on a closed-loop control, the thin-film Joule heater exhibits rapid and stable temperature regulation capability, with thermal response time © The Author(s) 2025.

关键词：

来源：评论

学校读者我要写书评

暂无评论

A DTW based automatic transient identification method in nuclear power plants

A DTW based automatic transient identification method in nuc...

引用

2018 Transactions of the American Nuclear Society, ANS 2018 and Embedded Topical Meeting Nuclear Fuels and Structural Materials

作者： Bai, Xiaoming Ai, Honglei Wang, Xinjun Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China No.328 Changshu Avenue Chengdu610213 China

来源：评论

学校读者我要写书评

暂无评论

A DTW based automatic transient identification method in nuclear power plants

A DTW based automatic transient identification method in nuc...

引用

AISTech 2018 Iron and Steel technology Conference and Exposition

作者： Bai, Xiaoming Ai, Honglei Wang, Xinjun Science and Technology on Reactor System Design Technology Laboratory Nuclear Power Institute of China No.328 Changshu Avenue Chengdu610213 China

来源：评论

学校读者我要写书评

暂无评论

All-Electric Aircraft Nose Wheel Steering system with Two Worm Gears

引用

Transactions of Nanjing University of Aeronautics and Astronautics 2018年第1期35卷 170-180页

作者： Zhang Ming Li Chuang Wu Xin Zhu Yin Key Laboratory of Fundamental Science for National Defense-Advanced Design Technology of Flight Vehicle Nanjing University of Aeronautics&AstronauticsNanjing 210016P.R.China Shanghai Aircraft Design and Research Institute Shanghai 201210P.R.China Aviation Key Laboratory of Science and Technology on Aero Electromechanical System Integration Nanjing 211106P.R.China

As all-electric aircraft has many advantages,an aircraft nose wheel steering system would be developed to the all-electric *** the control demand of the nose wheel steering system,based on the basic principles of nose wheel steering system and the design technique of mechanotronics,an all-electric aircraft nose wheel steering system,composed of a nose wheel steering mechanism of two worm gear and a control servo system of fly-by-wire with both steering and anti-shimmy functions is designed to meet the demand for operation control in the nose wheel steering ***,based on the LMS-AMESim software,the simulation model of the system is established to simulate the dynamics for the verification of its steering *** simulation results indicate that the nose wheel steering system is reasonable,and can meet the requirements of the general ***,the prototypes of the steering mechanism and control system are studied to validate the design,and the steering test bench is prepared to test the designed *** test results,such as steer angle,rotate speed of motor are analyzed in details and compared with the theoretical *** analysis and comparison results show that the design is reasonable and the property of the prototype can achieve the design objectives.

关键词： mechanotronics design nose wheel steering system all-electric aircraft design landing gear

来源：评论

学校读者我要写书评

暂无评论

Large eddy simulation of turbulent flow in the rod bundle with different spacer grids 23

Large eddy simulation of turbulent flow in the rod bundle wi...

引用

23rd International Conference on Nuclear Engineering: Nuclear Power - Reliable Global Energy, ICONE 2015

作者： Wei, Zonglan Yu, Zhang Liu, Songtao Science and Technology on Reactor System Design Technology Laboratory NPIC Chengdu Sichuan China Nuclear Power Design and Research Sub-Institute NPIC Chengdu Sichuan China

ISBN: (纸本)9784888982566

Large eddy simulation(LES) of the swirling flow in the rod bundle subchannels with spacer grids are presented. According to the rod bundle flow benchmark experiment, the 5×5 rod bundle with a split-type spacer grid is simulated by this transient simulation with a fine hybrid mesh. Mean velocity components, RMS (root mean square) velocity components and turbulent kinetic energy profiles at different locations downstream the mixing vanes are compared between the experiment and simulation results. LES results can reproduce the mixing turbulent flow velocity field well. We also have studied the influence of the mixing vanes' bending degree on the subchannel flow structures by using LES to simulate the 3×3 rod bundle with the typical PWR spacer grid. The mixing vanes' bending degree is modified to 35°and 40°based on the original spacer grid, whose mixing vanes' bending degree is 30°. The larger bending degree produces a stronger mean coolant mixing effect, while larger pressure loss and fluctuation come together with this effect. The increased pressure loss would generate additional flow resistance, and larger fluctuation of coolant flow would make the mixing effect unstable, as well as would cause flow-induced vibration and grid-to-rod fretting phenomena. The LES method is a viable tool to optimize the spacer grid design and provide transient flow field data for mechanical analysis. Copyright © 2015 by JSME.

关键词： Mixing

来源：评论

学校读者我要写书评

暂无评论

A dual-perspective joint domain generalization network for bearing fault diagnosis under unseen working conditions

引用

Advanced Engineering Informatics 2025年 66卷

作者： Kai Huang Zhijun Ren Tantao Lin Yongsheng Zhu Linbo Zhu Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System Xi’an Jiaotong University Xi’an China Frontier Institute of Science and Technology Xi’an Jiaotong University Xi’an China School of Chemical Engineering and Technology Xi’an Jiaotong University Xi’an China

Domain generalization methods hold significant promise for bearing fault diagnosis under unseen working conditions. By learning cross-domain invariant fault representations from multiple source domains, recent domain generalization fault diagnosis (DGFD) methods have achieved remarkable progress. However, when domain discrepancies are substantial, learning cross-domain invariant representations becomes challenging, severely limiting the applicability of current DGFD approaches. To address this issue, this study proposes a Dual-Perspective Joint Domain Generalization Network (DPJDG) that integrates class-level invariance and cross-domain invariance. Specifically, considering that all source domains share the same label space, a data augmentation strategy with semantic consistency is developed. This strategy enhances feature diversity and connects discrete subdomains of the same class. As a result, a unified domain is constructed, enabling smooth extraction of class-invariant features within the domain. For inter-domain invariance, cross-domain invariant features are extracted by minimizing the maximum mean discrepancy (MMD) loss among source domains. Furthermore, a dual-confidence weighting strategy, applied at both instance and domain levels, is introduced to quantify the generalizability of features from different attributes and source domains. Finally, supervised contrastive learning is employed to ensure effective fusion of class-invariant and domain-invariant features, thereby enhancing diagnostic performance. Experimental results on six diverse datasets validate the effectiveness and superiority of the proposed method in improving generalization performance across various diagnostic tasks.

关键词： Contrastive Learning

来源：评论

学校读者我要写书评

暂无评论

Modeling of Electronic Attenuator in Adaptive Interference Cancellation systems 5

Modeling of Electronic Attenuator in Adaptive Interference C...

引用

The 5th International Symposium on Electromagnetic Compatibility

作者： Yang Li Fangmin He Jin Meng Yi Li Qing Wang National Key Laboratory of Science and Technology on Vessel Integrated Power System Naval University of Engineering

ISBN: (纸本)9781509051861;9781509051854

In the design of adaptive interference cancellation systems(AICSs),the simulation model plays an important ***,accurate modeling of the response of electronic attenuator is crucial but is usually a difficult task since it relies on the exact fitting of the response of real PIN *** this paper,the PIN diode response characteristics are firstly measured with ***,the key parameters of the model are extracted by fitting the experiment data with the output of the *** feasibility of this approach is examined with three levels of experiments and simulations,i.e.,the response of the PIN diode and the electronic attenuator,as well as the performance of the *** results show that our proposed method is feasible and effective.

关键词： PIN diode electronic attenuator modeling interference cancellation

来源：评论

学校读者我要写书评

暂无评论

Formation and mechanism of carbon coating on carbon fibers through glucose-to-carbon conversion and its effect on the mechanical properties of C f /ZrB 2 -SiC composites

引用

Journal of the European Ceramic Society 2025年第15期45卷

作者： Huiyi Fang Zonghao Sheng Wenxia Wang Chuncheng Wei Shuang Li Xin Geng Xiaowei Li Nannan Zhu Guangwu Wen Shun Dong Peng Wang School of Materials Science and Engineering Shandong University of Technology Zibo 255000 China School of Resources and Environmental Engineering Shandong University of Technology Zibo 255000 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Harbin Institute of Technology Harbin 150001 China Science and Technology on Advanced Ceramic Fibers and Composites Laboratory National University of Defense Technology Changsha 410073 China Shandong Industrial Ceramics Research & Design institute Co. Ltd Zibo 255000 China

The protection for carbon fibers is crucial for carbon fiber-reinforced materials. Carbon coatings were prepared on carbon fibers through gelation, hydrothermal caramelization and pyrolysis, with glucose as precursor of carbon. The glucose-to-carbon conversion mechanism was explored, as well as the effect of high pressure in hydrothermal reactor and the catalytic role of KCl. The high pressure suppressed gas escape and was beneficial to the formation of dense carbon coating. The KCl promoted the generation of 5-HMF, thereby accelerated the glucose-to-caramel conversion. C f /ZrB 2 -SiC composites were prepared by introducing ZrB 2 -SiC slurry into the carbon fiber preform and hot press sintering. The carbon coating protected the carbon fibers from damage during sintering at high temperature. The carbon coating significantly improved the flexural strength, fracture toughness, and fracture work of C f /ZrB 2 -SiC composites from 122 MPa, 3.24 MPa‧m 1/2 , and 231.6 J/m 2 to 321 MPa, 5.87 MPa‧m 1/2 , and 567.1 J/m 2 , respectively.

关键词：

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：