检索结果-内蒙古大学图书馆

IEEE International Conference on Autonomous Robot Systems and Competitions (ICARSC)

作者： Omuzi A. Hudson Mohamed Fanni Sabah M. Ahmed Ahmed Sameh Mechatronics and Robotics Engineering Department Egypt-Japan University of Science and Technology New Borg El Arab City Egypt Production Eng. & Mechanical Design Department Mansoura University Mansoura Egypt Department of Electrical Engineering Assiut University Assiut Egypt

This paper presents the design and simulation of a jumping mechanism as a means of flight initiation in Flapping Wing Micro Air Vehicles (FWMAV) inspired by birds. Most flying birds take off for flight from standing or perching position at low air speed. A lightweight 4-bar leg mechanism has been designed using dimensional synthesis by motion generation. Graphical and analytical methods are established to determine the kinematic dimensions that fulfill some prescribed take-off maneuvers. Link cross sections have been optimized to reduce weight. The jumping leg has been tested with an efficient aerodynamic model that accurately predicts unsteady flapping wing aerodynamic characteristics just after launching. Transition of forces from leg to wings has been analyzed. For a jumping angle of about 50 degrees at 10m/s the 33.3 g ornithopter model gains momentum and reaches steady state flight at a velocity close to the initial value.

关键词： Conferences Autonomous robots

来源：评论

学校读者我要写书评

暂无评论

RoboFDM: A robotic system for support-free fabrication using FDM

RoboFDM: A robotic system for support-free fabrication using...

引用

2017 IEEE International Conference on robotics and Automation, ICRA 2017

作者： Wu, Chenming Dai, Chengkai Fang, Guoxin Liu, Yong-Jin Wang, Charlie C.L. TNList Department of Computer Science and Technology Tsinghua University Beijing China Department of Design Engineering and TU Delft Robotics Institute Delft University of Technology Netherlands

ISBN: (纸本)9781509046331

This paper presents a robotic system - RoboFDM that targets at printing 3D models without support-structures, which is considered as the major restriction to the flexibility of 3D printing. The hardware of RoboFDM consists of a robotic arm providing 6-DOF motion to the platform of material accumulation and an extruder forming molten filaments of polylactic acid (PLA). The fabrication of 3D models in this system follows the principle of fused decomposition modeling (FDM). Different from conventional FDM, an input model fabricated by RoboFDM is printed along different directions at different places. A new algorithm is developed to decompose models into support-free parts that can be printed one by one in a collision-free sequence. The printing directions of all parts are also determined during the computation of model decomposition. Experiments have been successfully taken on our RoboFDM system to print general freeform objects in a support-free manner. © 2017 IEEE.

关键词： Fabrication

来源：评论

学校读者我要写书评

暂无评论

Micro/macro-positioning control of a novel contactless active robotic joint using active magnetic bearing

Micro/macro-positioning control of a novel contactless activ...

引用

2017 IEEE International Conference on Industrial Technology, ICIT 2017

作者： Selmy, Mohamed Fanni, Mohamed Mohamed, Abdelfatah M. Mechatronics and Robotics Engineering Department School of Innovative Design Engineering Egypt-Japan University of Science and Technology E-JUST New Borg El Arab City Alexandria Egypt

ISBN: (纸本)9781509053209

In this paper the micro/macro-positioning control of a novel contactless active robotic joint using active magnetic bearing (AMB) is presented. In clean environments, such as surgery or clean rooms, the use of robots with this novel joint is useful to avoid friction, dust generation, and oil lubrication. Moreover, this kind of robots can be used in the applications that need high precision micropositioning control such as semiconductor wafers manipulation to form semiconductor devices. The novel robotic joint used in this paper is designed using finite element method. This joint has 6 degrees-of-freedom (DOFs), 1-DOF for robot joint roll angle and 5-DOF for AMB. The robot joint roll angle is controlled in macro-scale accuracy. The macro-scale positioning of the joint roll angle is needed for gross motion like normal robot revolute joint. The other 5-DOF of the joint are controlled like AMB with the different that the target pitch and yaw angles as well as the axial, vertical and horizontal movements are different than zero but in micro-scale range. The robot joint roll angle is controlled using a PID-based Feedback linearization controller, while a state feedback controller with integral term is used for controlling the AMB 5-DOFs. The micro/macro-positioning control of the novel robotic joint is implemented using MATLAB/Simulink. The robustness of the controllers is tested against payload variations. The results demonstrate that the proposed novel robotic joint is feasible and valid in the applications that need high precision micro-macro-positioning control. © 2017 IEEE.

关键词： Controllers

来源：评论

学校读者我要写书评

暂无评论

Correlation between acute phase head injury to cyclists and consciousness disturbance: A case study in reconstruction of single-cyclist accident

引用

Journal of Biomechanical Science and engineering 2019年第1期14卷 18-00143-18-00143页

作者： Oikawa, Shoko Matsui, Yasuhiro Gomei, Sayaka Konno, Tomoe Ueno, Takahiro Nakadate, Hiromichi Aomura, Shigeru Graduate School of System Design Tokyo Metropolitan University 6-6 Asahigaoka Hino-shi Tokyo191-0065 Japan Vehicle Safety Research Department National Traffic Safety and Environment Laboratory 7-42-27 Jindaiji-Higashi-machi Chofu-shi Tokyo182-0012 Japan Dokkyo Medical University Koshigaya Hospital 2-1-50 Minami-Koshigaya Koshigaya-shi Saitama343-8555 Japan Department of Mechanical Engineering and Robotics Shinshu University 3-15-1 Tokida Ueda-shi Nagano386-8567 Japan

This study first examined the correlation between types of acute phase head injuries to cyclists and consciousness disturbance by using data from patients at the emergency room of Dokkyo Medical University Koshigaya Hospital in Japan. The injuries were compared for cases where the cyclists experienced consciousness disturbance and otherwise. The results showed that skull fractures and brain contusions were the most frequent consequences of head injuries to cyclists in general. However, the average number of head injuries by types for cyclists suffering consciousness disturbance was higher than that for cyclists who had not experienced it, for both head fractures (0.9 versus 0.7) and brain injuries (1.9 versus 0.5). This implies that head fractures and brain injuries may increase the probability of consciousness disturbance. Next, considering a cyclist who had sustained a head injury and suffered acute consciousness disturbance in an accident while not wearing a helmet, a case study was conducted to quantify the effectiveness of a bicycle helmet in reducing the intensity of traumatic head injuries by using a whole-body model, a finite element model of the human head, and a model of the bicycle helmet on a mathematical dynamic modeling software. A comparison of the peak values computed for cases of cyclists with and without a helmet showed that in the former, strain on the skull was reduced by 95.9% in cases of skull fractures, and the von Mises stress on the brain was reduced by 23.3% for cases of brain contusions. The results suggest that helmet use reduces the risk of skull fracture and brain contusions in cyclists because it considerably reduces the impact. Moreover, the use of helmets can reduce the probability of consciousness disturbance. © 2019 The Japan Society of Mechanical Engineers.

关键词： Fracture

来源：评论

学校读者我要写书评

暂无评论

A Study of Optical Flow in Peripheral Vision Area While Vehicle Cornering

A Study of Optical Flow in Peripheral Vision Area While Vehi...

引用

International Symposium on Soft Computing and Intelligent Systems (SCIS)

作者： Yusuke Nagai Hiroyuki Masuta Tatsuo Motoyoshi Kei Sawai Takumi Tamamoto Ken’Ichi Koyanagi Toru Oshima dept. Intelligent Systems Design Engineering Toyama Prefectural University Kurokawa Imizu-shi Toyama Japan dept. Department of Intelligent robotics Toyama Prefectural University Kurokawa Imizu-shi Toyama Japan

ISBN: (纸本)9781538626344;9781538626337

This research focuses on the ecological study on the human visual perception to develop the vehicle control system in the cornering. We express the human visual information using the gaze direction and the optical flow. We suggest acquiring the optical flow on the peripheral vision area by using image processing. In this paper, we explain the trend of the optical flow in the peripheral vision area. First, we simulated the optical flow on the peripheral vision area in vehicle cornering. For the result, the optical flow in the peripheral vision area radiates outward from the gaze center. Next, we perform the real driving experiment. For the result, the optical flow in the peripheral vision area radiates outward from the gaze center in the real driving data.

关键词： Optical flow Image motion analysis Computer vision Cameras Control systems Visualization

来源：评论

学校读者我要写书评

暂无评论

Continuum-micromechanical modeling of microcapsules-based composites 5th

Continuum-micromechanical modeling of microcapsules-based co...

引用

5th Asia Conference on Mechanical and Materials engineering, ACMME 2017

作者： Ahmed, Abdalla Sanada, Kazuaki Fanni, Mohamed Abd El-Moneim, Ahmed Department of Materials Science and Engineering Egypt-Japan University of Science and Technology Egypt Department of Mechanical Systems Engineering Toyama Prefectural University Japan Department of Mechatronics and Robotics Engineering Egypt-Japan University of Science and Technology Egypt Department of Production Engineering and Mechanical Design Faculty of Engineering Mansoura University Egypt

ISBN: (纸本)9783035712919

Microcapsules are used in a wide range of applications, especially in self-healing composite materials and phase change materials. There is a growing body of literature that recognizes the importance of reinforcement on the mechanical properties of composites, however the effect of microcapsules during service needs to be further investigated. In this study, numerical investigations were conducted to examine the effects of the various geometric parameters on the mechanical behavior of microcapsules-based composites. The effective Young’s modulus and Poisson’s ratio of core-shell microcapsules distributed in a continuous matrix were predicted. A detailed three-dimensional finite element modeling (FEM) was presented. The numerical results were compared with a hierarchical proposed analytical model for three-constituent composites. Good agreements were achieved. © 2017 Trans Tech Publications, Switzerland.

关键词： Phase change materials

来源：评论

学校读者我要写书评

暂无评论

New Subspace-Based Method for Localization of Multiple Near-Field Signals and Statistical Analysis 52

New Subspace-Based Method for Localization of Multiple Near-...

引用

52nd Asilomar Conference on Signals, Systems and Computers, ACSSC 2018

作者： Zuo, Weiliang Xin, Jingmin Zheng, Nanning Sano, Akira Institute of Artificial Intelligence and Robotics Xi'An Jiaotong University Xi'an710049 China National Engineering Laboratory for Visual Information Processing and Applications Xi'an Jiaotong University Xi'an710049 China Department of System Design Engineering Keio University Yokohama223-8522 Japan

ISBN: (纸本)9781538692189

This paper investigates the localization of multiple near-field narrowband signals impinging on a symmetrical uniform linear array (ULA), and a new computationally efficient subspace-based method is proposed. The directions-of-arrival (DOAs) and ranges are estimated separately with a one-dimensional (1-D) subspaced-based estimation technique without eigendecomposition, where the null spaces are obtained through a linear operation of the matrices formed from the anti-diagonal elements of the noiseless array covariance matrix, and the estimated DOAs and ranges are automatically paired without any additional processing. Furthermore, the statistical analysis of the proposed method is studied, and the asymptotic mean-square-error (MSE) expressions of the estimation errors are derived. The effectiveness and the theoretical analysis of the proposed method are verified through numerical examples, and the simulation results show that our method provides good estimation performance for both the DOAs and ranges. © 2018 IEEE.

关键词： Covariance matrix

来源：评论

学校读者我要写书评

暂无评论

Weight estimation system using surface EMG armband

Weight estimation system using surface EMG armband

引用

2017 IEEE International Conference on Industrial Technology, ICIT 2017

作者： Oboe, Roberto Tonin, Alessandro Yu, Koyo Ohnishi, Kouhei Turolla, Andrea Department of Management and Engineering Univerisity of Padova Vicenza Italy Laboratory of Kinematics and Robotics .R.C.C.S. Fondazione Ospedale San Camillo Venice Italy Department of Information Engineering University of Padova Padova Italy Department of System Design Engineering Keyo University Hiyoshi Kouhoku Yokohama Japan

ISBN: (纸本)9781509053209

Knowing the force exerted by a human operator while he/she is performing a specific task is important in many different field. For instance, limiting or optimizing the effort in sport activities allows for the development of specific training patterns for athletes, while knowing the effort made by a worker when he/she lifts a weight is important from the point of view of the safety. The effective effort is not only related to the net force/torque generated, but also to the force generated by each muscle. This aspect is the most crucial to be evaluated, as a non properly designed/handled exercise/task can lead to an excessive muscle strain and, in turn, to injuries. In this paper we report some preliminary results obtained by using low-cost wearable sensors in the estimation of the weight lifted by a human operator, through the simultaneous measurement of motion (via inertial sensors) and the muscles activations (via surface ElectroMyoGraphy - sEMG). The armband has 8 sEMG sensors and a 9-DoF inertial sensor, it has electrically safe setup with low voltage battery and Bluetooth protocol. The relationship between the EMG and inertial signals and the exerted force was made using a biarticular model of the arm. The model was used in order to have a theoretical value of the shoulder and elbow torques performing a weightlifting standardized tests. The value was then compared with the one estimated by the identification of a model and by means of a neural network. In both cases, the results show the relationship between signals and torque, but, in both cases, the results are affected by error. Nevertheless, even if it doesnt accurately estimate the weight lifted, both the presented techniques highlight the possibility of developing a classification of the exerted force that, calibrating the system for each person, can identify whether the weight lifted is light or heavy. © 2017 IEEE.

关键词： Wearable sensors

来源：评论

学校读者我要写书评

暂无评论

Stretchable Hybrid Electronics: Soft Modular Electronic Blocks (SMEBs): A Strategy for Tailored Wearable Health-Monitoring Systems (Adv. Sci. 5/2019)

引用

Advanced Science 2019年第5期6卷 1970025-1970025页

作者： Jaeyoung Yoon Yunsik Joo Eunho Oh Byeongmoon Lee Daesik Kim Seunghwan Lee Taehoon Kim Junghwan Byun Yongtaek Hong Department of Electrical and Computer Engineering Inter University Semiconductor Research Center (ISRC) Seoul National University Seoul 08826 Republic of Korea Department of Mechanical and Aerospace Engineering Institute of Advanced Machines and Design (IAMD) Soft Robotics Research Center (SRRC) Seoul National University Seoul 08826 Republic of Korea

来源：评论

学校读者我要写书评

暂无评论

P-12.1: Lighting effects, light distribution matters

引用

SID Symposium Digest of Technical Papers 2019年第S1期50卷

作者： Ling Xia Tingting Zhang Xiaofeng Liu Sylvia C. Pont College of IoT Engineering Hohai University Changzhou Key Laboratory of Robotics and Intelligent Technology Jiangsu Key laboratory of Special Robot Technology Changzhou China Department of Industrial Design Perceptual Intelligence lab Delft University of Technology Delft The Netherlands

The interaction between light and its surroundings (i.e. the geometry and materials) shapes the lighting distribution and determines the appearance of scenes and its visual experiences. In this study, we introduced the concept of light distribution solids by distinguishing luminance distribution solids and illuminance distribution solids. It is helpful to understand the spatial and form-giving lighting effects on objects' appearance. Furthermore, this study together with our previous study (Xia, Pont et al. 2016, Xia, Pont et al. 2016) provide theoretical basis for the exploration of extracting photometry parameters out of HDR panoramic photographs of scenes.

关键词： Lighting effects lighting distribution luminance distribution solids illuminance distribution solids light density light diection light diffuseness HDR panoramic photogrphs

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：