检索结果-内蒙古大学图书馆

International Conference on Advanced Mechatronic Systems (ICAMechS)

作者： Luige Vladareanu Cristian Spirleanu Mihaiela Iliescu Hongnian Yu Mingcong Deng Weizhong Guo Feng Gao Dept. Robotics and Mechatronics Institute of Solid Mechanics of Romanian Academy IMSAR Bucharest Romania The Graduate School of Engineering Tokyo University of Agriculture and Technology Tokyo Japan School of Design Engineering and Computing Bournemouth University UK School of Mechanical Engineering Shanghai Jiao Tong University Shanghai China

The paper studies the flexible robotic cells in cooperation with automated guided vehicle (AGV), in the presence of obstacles, at constant or variable speed and variable load, aiming to optimizing the interaction between AGV and flexible robotic cell components. Overall system performance is analyzed by using modeling tools for discrete event systems like Generalized Stochastic Petri Net (GSPN). The interaction between AGV and flexible robotic cell components is implemented through communication messages using serial data received from an optical XY encoder, communication protocol receive function is modeled with GSPN. Improving of the stability performances and real time motion control are analyzed and the virtual projection method is adopted using the Versatile Intelligent Portable Robot Platform VIPRO. The obtained results, validated on the experimental RTOS robotic platform and DMQX language extension for robotic applications, lead to higher performance in relation to interaction optimization, decrease the flexible cell's cycle time, increase mobility and stability of the AGV and also the development of new technological capabilities of the control systems.

关键词： Decision support systems Silicon mechatronics Intelligent control Real-time systems Robot control Vehicles

来源：评论

学校读者我要写书评

暂无评论

A novel intention prediction strategy for a shared control tele-manipulation system in unknown environments

A novel intention prediction strategy for a shared control t...

引用

International Conference on mechatronics (ICM)

作者： Haitham El-Hussieny Samy F. M. Assal A. A. Abouelsoud Said M. Megahed Mechatronics and Robotics Engineering Department Egypt-Japan University of Science and Technology (E-JUST) Egypt Department of Production Engineering and Mechanical Design Tanta University Egypt Electronics and Communications Eng. Dept. Cairo University Egypt Mechanical Design and Production Engineering Department Cairo University Egypt

This paper addresses the problem of controlling a slave robot with a shared control scheme of a tele-manipulation system in unknown environments. Shared control schemes may be useful for reducing the communication delay in time-critical tele-manipulation systems. Shared control scheme consists of two key components: intention prediction and command arbitration. An intuitive and novel strategy under which the human operator intention could be extracted seamlessly from the hand point to point path during the tele-manipulation process is developed in this paper. The new strategy is based on the environment scene awareness conducted at the remote side at the beginning of the tele-manipulation task. The developed strategy is tested experimentally with a simulation of a robot model in several remote environments to verify its accuracy and effectiveness. The results confirmed significant performance improvement in terms of reduced time using the proposed shared control scheme compared to the direct tele-manipulation scheme.

关键词： Manipulators Trajectory Service robots Accuracy Master-slave Three-dimensional displays

来源：评论

学校读者我要写书评

暂无评论

Process knowledge representation of aircraft assembly based on ontology 4

Process knowledge representation of aircraft assembly based ...

引用

4th International Workshop of Advanced Manufacturing and Automation, IWAMA 2014

作者： Yu, Ting Ting Cai, Hong Xia Shanghai Key Laboratory of Intelligent Manufacturing and Robotics School of Mechatronics Engineering and Automation Shanghai University Shanghai China

ISBN: (纸本)9783038352532

In aviation industry, it’s urgent to build a scientific and effective knowledge system with high scalability to change the fact that the data is rich while the knowledge is deficient. We constructed the knowledge ontology of aircraft assembly with cyclic acquisition and seven step methods based on ontology thought. Then, we obtained the potential relationship related to process and abstract process ontology through logic reasoning. Finally, OWL is applied for ontology formal description to realize knowledge standardization and normalization. It’s meaningful to reuse, share the assembly process knowledge and further reasoning in the aviation field. © (2014) Trans Tech Publications, Switzerland.

关键词： Knowledge representation

来源：评论

学校读者我要写书评

暂无评论

Multi-material optimization of a mid-size city bus for nvh improvements 1

Multi-material optimization of a mid-size city bus for nvh i...

引用

1st International Conference on engineering and Applied Sciences Optimization, OPT-i 2014

作者： Korta, Jakub Uhl, Tadeusz AGH University of Science and Technology Faculty of Mechanical Engineering and Robotics Department of Robotics and Mechatronics al. A. Mickiewicza 30 Krakow30-059 Poland

ISBN: (纸本)9789609999465

This article describes a multi-material optimization of a mid-size city bus, for the NVH and weight improvements. Structural modifications were applied to the vehicle by material and geometry alterations. Due to the contradictions between the objective functions, it was a multi-objective problem, which was solved using a genetic algorithm in conjunction with the response surface method. The curb weight of the analyzed vehicle was kept at the lowest possible level, which due to anticorrelation between this and the other objectives was not a trival task. Additionally, the paper demonstrates a global approach to the vehicle vibroacoustics, by analyzing the whole considered frequency spectrum at once. This can be attained by using a generalized mean estimator, capable of interpretation of the spectral signal in a desirable manner. It has been shown that the presented optimization tool is suitable for an early stage (conceptual) design, when most of the structural parameters can be modified.

关键词： Multiobjective optimization

来源：评论

学校读者我要写书评

暂无评论

Surface roughness of titanium alloys TA2 and TC4 in high-speed cylindrical grinding

Surface roughness of titanium alloys TA2 and TC4 in high-spe...

引用

2013 3rd International Conference on Advanced Materials and Information Technology Processing, AMITP 2013

作者： Shen, Nanyan Jia, Yakai Li, Jing Shanghai Key Laboratory of Mechanical Automation and Robotics School of Mechatronics Engineering and Automation Shanghai University Shanghai China

ISBN: (纸本)9781845648534

The grindability of titanium alloys that are classified as "hard-to-machine" materials is studied in high-speed cylindrical grinding by cubic boron nitride (CBN) grinding wheel. The research emphasis is surface roughness, including the simulation of empirical model of surface roughness and the orthogonal experiments using CBN grinding wheel with the speed from 45 to 150 m/s. The results of surface roughness obtained by the grinding experiments and the simulation analysis under nine groups of grinding parameters are compared, which show that the empirical model is partially applicable for titanium (TA2) and titanium alloy (TC4) under the grinding conditions in this paper. To make the calculation results of empirical model close to the actual measurement results, the modified empirical model which illustrates the relationship between surface roughness and three key grinding parameters under the certain grinding conditions is built up by experimental data fitting. © 2014 WIT Press.

关键词： Surface roughness

来源：评论

学校读者我要写书评

暂无评论

Simultaneous kinesthetic teaching of positional and force requirements for sequential in-contact tasks

Simultaneous kinesthetic teaching of positional and force re...

引用

IEEE-RAS International Conference on Humanoid Robots

作者： Franz Steinmetz Alberto Montebelli Ville Kyrki experiments described in this paper as part of his Master's Thesis at Aalto University Institute of Robotics and Mechatronics Oberpfaffenhofen-Wefilinz Germany Hogskolan i Skovde Skovde SE Department of Electrical Engineering and Automation Aalto Univeristy Aalto Finland

This paper demonstrates a method for simultaneous transfer of positional and force requirements for in-contact tasks from a human instructor to a robotic arm through kinesthetic teaching. This is achieved by a specific use of the sensory configuration, where a force/torque sensor is mounted between the tool and the flange of a robotic arm endowed with integrated torque sensors at each joint. The human demonstration is modeled using Dynamic Movement Primitives. Following human demonstration, the robot arm is provided with the capacity to perform sequential in-contact tasks, for example writing on a notepad a previously demonstrated sequence of characters. During the reenactment of the task, the system is not only able to imitate and generalize from demonstrated trajectories, but also from their associated force profiles. In fact, the implemented framework is extended to successfully recover from perturbations of the trajectory during reenactment and to cope with dynamic environments.

关键词： Robot sensing systems Force Dynamics Impedance Trajectory Robot kinematics

来源：评论

学校读者我要写书评

暂无评论

Research on the impact of needle valve orifice chamfering on the performance based on fluent 4

Research on the impact of needle valve orifice chamfering on...

引用

4th International Workshop of Advanced Manufacturing and Automation, IWAMA 2014

作者： Tao, Yong Cai, Hong Xia Bai, Yu Jie Yu, Ting Ting Shanghai Key Laboratory of Mechanical Automation and Robotics School of Mechatronics Engineering and Automation Shanghai University Shanghai China

ISBN: (纸本)9783038352532

Needle valve is the key component of diesel engine cylinder. Changing the nozzle Orifice chamferinging will influence the flow coefficient and spray performance. Firstly, we proposed a physical model of abrasive flow field inside the needle valve based on computational fluid dynamics technology. Then, we set the computing method and boundary type. Finally, we simulated the abrasive flow field using fluent software. The result is useful for guidance in the actual grinding process. © (2014) Trans Tech Publications, Switzerland.

关键词： Grinding (machining)

来源：评论

学校读者我要写书评

暂无评论

Realization of online measurement technology and its application in the intelligent machining cell 4

Realization of online measurement technology and its applica...

引用

4th International Workshop of Advanced Manufacturing and Automation, IWAMA 2014

作者： Yu, Zhi Xiang Shen, Nan Yan Li, Jing Jia, Ya Kai Shanghai Key Laboratory of Mechanical Automation and Robotics School of Mechatronics Engineering and Automation Shanghai University Shanghai China

ISBN: (纸本)9783038352532

In view of the continuous unmanned machining of revolving workpiece, this paper has integrated the industrial robot with machine vision, mill-turning center and trigger online measurement systems into an intelligent machining cell. It has achieved the automatic loading and unloading material, automatic adjustment of the Machine Coordinate System (MCS) of workblank, automatic compensation of machining errors and workpiece diameter and roundness of the on-machine inspection. In order to ensure the accuracy of continuous unmanned machining of the intelligent machining cell, the main factors that affect the accuracy of online measurement system and the corresponding solutions are analyzed. On this basis, a machining instance is made to verify the validity of the trigger online measurement technique's application in continuous unmanned machining of the revolving workpiece. The results of this study show that the intelligent machining cell can ensure stable unmanned machining with high precision for several hours. © (2014) Trans Tech Publications, Switzerland.

关键词： Cells

来源：评论

学校读者我要写书评

暂无评论

Tunable interdigital transducer for lamb waves 7

Tunable interdigital transducer for lamb waves

引用

7th European Workshop on Structural Health Monitoring, EWSHM 2014

作者： Maka, Micha Rosiek, Mateusz Martowicz, Adam Stepinski, Tadeusz Uhl, Tadeusz AGH University of Science and Technology Faculty of Mechanical Engineering and Robotics Department of Robotics and Mechatronics al. A. Mickiewicza 30 Krakow30-059 Poland

In this paper a novel concept of a tunable transducer for exciting and sensing Lamb waves is presented. The proposed transducer is an extension of the Interdigital Transducer (IDT), which main advantage is mode selectivity. In the proposed transducer, further referred to as the Tunable IDT (T-IDT), comb electrodes with fixed pitch are replaced by a series of densely distributed discrete electrodes. They can be easily interconnected in different configurations to match required wavelength, which makes possible matching to different wavelengths without a need of physical changes of the electrodes layout. In order to verify the properties of the T-IDT, numerical simulations and experimental tests were performed and their results compared to the ones obtained with a traditional IDT. Both the numerical and experimental results show that the T-IDT generates beampatterns similar to those generated by the conventional IDT. The preliminary results presented in the paper prove that the proposed T-IDT can be easily tuned to various wave modes and show the performance similar to the one observed for the conventional IDT. Copyright © Inria (2014).

关键词： Surface waves

来源：评论

学校读者我要写书评

暂无评论

Characterizing the human-robot haptic dyad in robot therapy of stroke survivors

引用

International Journal of Intelligent Computing and Cybernetics 2014年第3期7卷 267-288页

作者： Dalia De Santis Jacopo Zenzeri Maura Casadio Lorenzo Masia Valentina Squeri Pietro Morasso Robotics Brain and Cognitive Sciences DepartmentIstituto Italiano di TecnologiaGenoaItaly Department of Informatics BioengineeringRobotics and Systems EngineeringUniversity of GenoaGenoaItaly Robotic Research Center Division of Mechatronics&DesignSchool of Mechanical&Aerospace EngineeringNanyang Technological UniversitySingaporeSingapore

Purpose–The working hypothesis,on which this paper is built,is that it is advantageous to look at protocols of robot rehabilitation in the general context of human-robot interaction in haptic *** purpose of this paper is to propose a new method to detect and evaluate an index of active participation(AC index),underlying the performance of robot-assisted *** is important for avoiding the slacking phenomenon that affects robot ***/methodology/approach–The evaluation of the AC index is based on a novel technique of assistance which does not use constant or elastic forces but trains of small force impulses,with amplitude adapted to the level of impairment and a frequency of 2 Hz,which is suggested by recent results in the field of intermittent motor control.A preliminary feasibility test of the proposed method was carried out during a haptic reaching task in the absence of visual feedback,for a group of five stroke patients and an equal group of healthy ***–The AC index appears to be stable and sensitive to training in both populations of ***/value–The main original element of this study is the proposal of the new AC index of voluntary control associated with the new method of pulsed haptic interaction.

关键词： Human-robot haptic interaction Robot therapy Stroke survivors

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：