检索结果-内蒙古大学图书馆

ASPE 2014 Spring Topical Meeting: Dimensional Accuracy and Surface Finish in Additive Manufacturing

作者： Uhlmann, Eckart Hein, Christoph Bergmann, André Oberschmidt, Dirk Institute for Machine Tools and Factory Management IWF Technical University Berlin Berlin Germany Institute for Production Systems and Design Technology IPK Fraunhofer-Gesellschaft Berlin Germany

来源：评论

学校读者我要写书评

暂无评论

Stabilisation and manoeuvre of electrically powered pedestrian controlled uniaxial vehicles for goods transport

Stabilisation and manoeuvre of electrically powered pedestri...

引用

UKACC International Conference on Control (CONTROL)

作者： Matthias Brüning Werner Schönewolf Jörg Krüger Fraunhofer Institute for Production Systems and Design Technology IPK Berlin Germany

Uniaxial vehicles for goods transport such as hand trucks are popular with many transport tasks. They offer intuitive manoeuvrability with little space requirements. The disadvantage of this class of pedestrian controlled means of transportation is the need for the user to apply force for stabilisation and propulsion. To eliminate this disadvantage a solution approach is to equip the vehicle with a controlled drive system providing force for both balancing and propulsion. To make possible stabilisation of a uniaxial vehicle for goods transport without need for external support the frame's pitch angle must be adapted with every change of load, which is a fundamental difference to uniaxial vehicles without payload or for passenger transportation. To make possible intuitive and convenient pedestrian controlled manoeuvre even with high payload the controller must set translational and rotational speed based on low interaction forces applied by the user going along. To allow for cheap production we developed a balance and manoeuvre controller not requiring sensor information of both load's absolute weight and user interaction forces. Main components of the concept are a balance controller including a Kalman state estimator for identification of frame's and load's combined centre of gravity's pitch angle, a manoeuvre controller based on state space control and a sophisticated program sequence switching automatically between operating modes for reload and manoeuvre. The control concept was designed and implemented using our new uniaxial vehicle system for urban goods transport. This vehicle is the first electrically powered hand truck that both balances adaptive to changing payload and allows for pedestrian controlled manoeuvre without need to operate control levers for setting speed or steering angle. The experimental results presented in this paper show the correct operation of the approach.

关键词： Vehicles Force Acceleration Aerospace electronics Switches Estimation

来源：评论

学校读者我要写书评

暂无评论

Cutting Edge Preparation of Micro Milling Tools

引用

Procedia CIRP 2014年 14卷 349-354页

作者： E. Uhlmann D. Oberschmidt Y. Kuche A. Löwenstein Institute for Machine Tools and Factory Management Technische Universität Berlin Pascalstraße 8-9 10587 Berlin Germany Fraunhofer Institute for Production Systems and Design Technology (IPK) Pascalstraße 8-9 10587 Berlin Germany

Micro milling is commonly used industrially for the production of precision components. Premature tool wear is usually the reason for a short tool life of cemented carbide end mills. An approach to improve the tool wear behavior is the defined cutting edge preparation. In this contribution, experimental investigations on the formation of cutting edge geometry during immersed tumbling of micro milling tools are presented and discussed. It could be shown that it is possible to prepare end mills with a diameter D = 1 mm and to generate edge radii of 4.0 μm ≤ rβ ≤ 31.2 μm. Investigations about the correlations between the cutting edge geometry and the tool wear behavior in micro milling operations showed decreased flank and crater wear as a result of an appropriate cutting edge preparation.

关键词： Immersed Tumbling Micro Milling Cutting Edge Geometry

来源：评论

学校读者我要写书评

暂无评论

Welding Simulation in Car Body Construction

引用

PhotonicsViews 2015年第2期12卷

作者： Raphael Thater Dr. Philipp Wiethop Michael Rethmeier Fraunhofer Institute for Production Systems and Design Technology (IPK) Joining and Coating Technology Pascalstraße 8-9 10587 Berlin Germany Tel.: +49 (0)30 / 3 90 06-375 Philipp Wiethop Audi AG I/PG-A3I 85045 Ingolstadt Germany Audi AG I/PG-A3I 85045 Ingolstadt Germany Raphael Thater Fraunhofer Institute for Production Systems and Design Technology (IPK) Joining and Coating Technology Pascalstraße 8-9 10587 Berlin Germany Tel.: +49 (0)30 / 3 90 06-375

Laser remote welding is a dynamic and flexible joining technology which enables various new approaches in welding sequence and weld position planning. However, the challenge is to find the optimal set-up within this large parameter space. In this article, numerical welding simulation is used to deal with this challenge. For a car door, different welding sequences and weld positions were numerically analyzed and compared with respect to its welding distortion behavior.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The industrial robot as intelligent tool carrier for human-robot interactive artwork

The industrial robot as intelligent tool carrier for human-r...

引用

IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： Axel Vick Dragoljub Surdilovic Ajit Kai Dräger Jörg Krüger Department of Industrial Automation Technology Technische Universität Berlin Germany Department of Automation and Robotics Fraunhofer Institute for Production Systems and Design Technology IPK Berlin Germany Atelier Kai Dräger Berlin Germany

This paper gives an introduction to the process of an experimental project in pertaining to the planning and integrating of a human-robot interactive stone carving system. The process includes an analysis of manual stone carving by a professional sculptor, a risk assessment of the projected robotic assistant system resulting in the safety concepts, a design of a tool carrier with force sensors and the human-machine interface. A standard industrial robot was selected and enhanced with extensive periphery to build up the intelligent tool carrier. Besides scientific results regarding work space and contact force suitable for human-robot collaboration, this paper presents the sculptural aspects within the experiment project. The professional scluptor evaluated the results as beyond manual processing.

关键词： Service robots Robot sensing systems Force Impedance Control systems

来源：评论

学校读者我要写书评

暂无评论

Enterprise Inter- and Intra-Organizational Integration: Building International Consensus

引用

2013年

作者： Kurt Kosanke Roland Jochem James G Nell Angel Ortiz Bas

ISBN: (纸本)9781475751512

The new organizational paradigms of global cooperation and collaboration require new ways and means for their support. Information and Communication technology (ICT) can and will play a significant role in this support. However, the many currently available and seemingly conflicting solutions, the confusing terminology, the lack of business justification, and last but not least the insufficient understanding of the technology by the end user community has significantly hampered the large scale application of the relevant ICT support and thereby the acceptance of the new paradigms. Many of these issues have been addressed in the workshops of the international initiative on Enterprise Inter- and Intra-Organizational Integration, which has been supported by the European IST Programme and NIST. The main subjects of the initiative: relations between knowledge management and business process modeling, interoperability of business processes and process models, enterprise engineering and integration, and representation of process models. Ontologies and agent technologies - the latter with their relations to ontologies and models - have been further subjects of discussions in several workshops. Results of the initiative are reported in this volume, which comprises the proceedings of the International Conference on Enterprise Integration and Modeling technology (ICEIMT'02). The conference was sponsored by the International Federation for Information Processing (IFIP) and held in Valencia, Spain in April 2002. Enterprise Inter- and Intra-Organizational Integration: Building International Consensus provides not only a wealth of information on the state of the art of the subjects of the initiative, it also identifies opportunities for research and development. Potential projects are identified in the work group reports and some of those will be taken up by organizations involved.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Vision based fire detection using colour variance

Vision based fire detection using colour variance

引用

IASTED International Conference on Signal Processing, Pattern Recognition and Applications, SPPRA 2013

作者： Ajami, Mohamad Menevidis, Zaharya Fraunhofer IPK Institute for Production Systems and Design Technology Pascalstrasse 8-9 D-12384 Berlin Germany

In recent years, there have been a variety of attempts in research and industry to solve various problems by using the non-contact detection and interpretation possibilities of computer vision, as one image offers the floor to analyse different causes and sources in parallel. It is logical to apply an integrated approach via image and video not only to venture into new and innovative fields, but also to optimize and improve existing solutions with other sensors and to solve contemporary problems. In this paper, we will deal with the integrated approach for optimizing and improving fire detection. The detection path is going to be solely based on the colour features of household fires in addition to a colour independent feature of fire that owes to enhance the detection result. The end goal is to achieve real time fire detection and obtain a low false positive rate.

关键词： Fires

来源：评论

学校读者我要写书评

暂无评论

Reference Ontologies to Support the Development of New Product-Service Lifecycle systems

Reference Ontologies to Support the Development of New Produ...

引用

IFIP WG 5.7 International Conference on Advances in Production Management systems, APMS 2014

作者： Palmer, Claire Urwin, Esmond Neil Pinazo-Sánchez, Jose Miguel Cid, Francisco Sánchez Pajkovska-Goceva, Sonja Young, Robert Ian Marr Wolfson School of Mechanical and Manufacturing Engineering Loughborough University Loughborough Leicestershire United Kingdom Ainia centro tecnológico Parque tecnológico de Valencia Avinguda de Benjamin Franklin 5-11 46980 Paterna Valencia Spain Instituto Tecnológico de Informática Camino de Vera s/n Edif. 8G Acceso B CP 46022 Valencia Spain Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstraße 8-9 10587 Berlin Germany

ISBN: (纸本)9783662447352

In competitive and time sensitive market places, organisations are tasked with providing Product Lifecycle Management (PLM) approaches to achieve and maintain competitive advantage, react to change and understand the balance of possible options when making decisions on complex multi-faceted problems, Global Production Networks (GPN) is one such domain in which this applies. When designing and configuring GPN to develop, manufacture and deliver product-service provision, information requirements that affect decision making become more complex. The application of reference ontologies to a domain and its related information requirements can enhance and accelerate the development of new product-service lifecycle systems with a view towards the seamless interchange of information or interoperability between systems and domains. This paper presents (i) preliminary results for the capture and modelling of end-user information and (ii) an initial higher level reference core ontology for the development of reference ontologies to ameliorate product-service lifecycle management for GPN. © IFIP International Federation for Information Processing 2014.

关键词： Interoperability

来源：评论

学校读者我要写书评

暂无评论

MRO – Challenge and Chance for Sustainable Enterprises

引用

Procedia CIRP 2013年 11卷 239-244页

作者： Eckart Uhlmann Martin Bilz Jeannette Baumgarten Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstr. 8-9 10587 Berlin Germany

Maintenance, Repair and Overhaul (MRO) is acquiring increasing commercial and socio-economic significance. For products and goods with high investment costs and a long lifespan, especially in the sectors of energy and transport, a considerable portion of commercial profits are generated by after-sales services. The field has a limited scientific background, despite a high potential in the business sector for technological and scientific optimization. This is also shown in the Market and Trend Study: Maintenance, Repair and Overhaul conducted by the fraunhofer ipk in 2011. This study provides number-based and significant information about the market size, the competitive situation and future trends. This is where the fraunhofer innovation cluster MRO in Energy and Transport were applied. Technologies and solutions for the optimization of MRO processes were developed in four different fields of innovation.

关键词： Maintenance Repair Cleaning Overhaul MRO Trends Condition Monitoring Planning Processes Technologies

来源：评论

学校读者我要写书评

暂无评论

Safe Physical Human-Robot Interaction with Industrial Dual-Arm Robots

Safe Physical Human-Robot Interaction with Industrial Dual-A...

引用

Workshop on Robot Motion and Control

作者： A. Vick D. Surdilovic J. Kruger Fraunhofer Institute for Production Systems and Design Technology IPK-Berlin Department Automation and Robotics

ISBN: (纸本)9781467355094

This paper presents methodologies and tests for the safe physical human-robot interaction in conventional position controlled and non-back driveable industrial robotic systems. The developed algorithms are based on a simplified sensor-less estimation of external forces and saturation of joint control torques to keep the effective external forces under safety level. To cope with non-linear saturation phenomena, position control compensators and path error governor have been implemented and designed to ensure smooth behaviour and preserved control performance. Being able to stop the robot arm motion when applying risky forces, as recommended by ISO 10218, the human feels subjective safe in the robot vicinity. Experiments with the PISA Workerbot dual-arm robot system illustrate feasibility and robustness of the developed algorithms.

关键词： dual-arm robot Human machine interaction joint control robotic arm control performance Safes Robot System Force Industrial

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：