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Procedia CIRP 2015年 38卷 53-57页

作者： E. Uhlmann A. Laghmouchi E. Hohwieler C. Geisert Machine Tools and Manufacturing Technology Institute for Machine Tools and Factory Management IWF TU Berlin Production Machines and System Management Department Production System Devision Fraunhofer Institute for Production Systems and Design Technology IPK

Due to the very high demands on availability and efficiency of production systems and industrial systems, condition-based maintenance is becoming increasingly important. The use of condition monitoring approaches to increase the machine availability and reduce the maintenance costs, as well as to enhance the process quality, has increased over the last years. The installation of industrial sensors for condition monitoring reasons is complex and cost-intensive. Moreover, the condition monitoring systems available on the market are application specific and expensive. The aim of this paper is to present the concept of a wireless sensor network using Micro-Electro-Mechanical systems – MEMS sensors and Raspberry Pi 2 for data acquisition and signal processing and classification. Moreover, its use for condition monitoring applications and the selected and implemented algorithm will be introduced. This concept realized by fraunhofer institute for Production systems and design technology ipk, can be used to detect faults in wear-susceptible rotating components in production systems. It can be easily adapted to different specific applications because of decentralized data preprocessing on the sensor nodes and pool of data and services in the cloud. A concrete example for an industrial application of this concept will be represented. This will include the visualization of results which were achieved. Finally, the evaluation and testing of this concept including. implemented algorithms on an axis test rig at different operation parameters will be illustrated.

关键词： Condition monitoring algorithms wireless sensor network classification

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Standard semantic models to support the configuration of global production networks 6

Standard semantic models to support the configuration of glo...

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6th Workshops of the IWEI 2015 Conference, IWEI-WS 2015 - co-located with the 6th International IFIP Working Conference on Enterprise Interoperability IWEI 2015

作者： Palmer, Claire Urwin, Esmond N. Rodríguez, Ester P. Cid, Francisco S. Pinazo-Sánchez, Jose M. Pajkovska-Goceva, Sonja Cutting-Decelle, Anne-Françoise Young, Robert Loughborough University-Wolfson School of Mechanical and Manufacturing Engineering Loughborough Leicestershire United Kingdom Instituto Tecnológico de Informática Spain Ainia Centro Tecnológico Spain Fraunhofer Institute for Production Systems and Design Technology IPK Germany Ecole Centrale de Lille France and University of Geneva CUI Switzerland

The configuration and deployment of global production networks, raises questions about the interchange of data and information between varied and different organisations, domains and systems. Standards should be an instrumental part of forming a basis to enable seamless interoperability, yet there is no clear support for global production networks. This paper sets out a reference ontology for global production networks being developed as a basis for interoperability between systems, with the potential for it to be developed as a standard. Copyright © 2015 by the paper's authors. Copying permitted only for private and academic purposes.

关键词： Interoperability

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Robot control as a service - Towards cloud-based motion planning and control for industrial robots 10

Robot control as a service - Towards cloud-based motion plan...

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10th International Workshop on Robot Motion and Control, RoMoCo 2015

作者： Vick, Axel Vonásek, Vojtěch Pěnička, Robert Krüger, Jörg Department of Industrial Automation Technology Institute for Machine Tools and Factory Management Technische Universität Berlin Pascalstr. 8-9 Berlin10587 Germany Czech Technical University in Prague Faculty of Electrical Engineering Technicka 2 Prague16627 Czech Republic Department of Robotics and Automation Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstr. 8-9 Berlin10587 Germany

ISBN: (纸本)9781479970438

This paper introduces a new concept for flexible motion planning and control of industrial robots. Instead of a closed monolithic architecture, an open service-based framework is proposed. The services can be run hardware-independent on a decentralized IT infrastructure (Cloud) allowing a fast reconfiguration of control modules and their multiple usage in different tasks. The services can be run on a dedicated PC or on individual virtual machines inside a single computing cluster. The proposed service-based framework was implemented and tested for the motion planning of a robotic manipulator. Effects on control performance, availability and scalability are investigated and documented. © 2015 IEEE.

关键词： Motion planning

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The Secure Information Society: Ethical, Legal and Political Challenges

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2014年

作者： Jörg Krüger Bertram Nickolay Sandro Gaycken

ISBN: (纸本)9781447158417

In our modern information societies, we not only use and welcome computers; we are highly dependent upon them. There is a downside of this kind of progress, however. Computers are not 100% reliable. They are insecure. They are vulnerable to attackers. They can either be attacked directly, to disrupt their services, or they can be abused in clever ways to do the bidding of an attacker as a dysfunctional ***-makers and experts alike always struggle with the amount of interdisciplinary knowledge needed to understand the nuts and bolts of modern information societies and their relation to security, the implications of technological or political progress or the lack thereof. This holds in particular for new challenges to come. These are harder to understand and to categorize; their development is difficult to predict. To mitigate this problem and to enable more foresight, The Secure Information Society provides an interdisciplinary spotlight onto some new and unfolding aspects of the uneasy relationship between information technology and information society, to aid the dialogue not only in its current and ongoing struggle, but to anticipate the future in time and prepare perspectives for the challenges ahead.

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HEPHESTOS: Hard Material Small-Batch Industrial Machining Robot

HEPHESTOS: Hard Material Small-Batch Industrial Machining Ro...

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ISR/Robotik 2014;41st International Symposium on Robotics

作者： Gerhard Schreck Dragoljub Surdilovic Joerg Krueger Fraunhofer Institute for Productions Systems and Design Technology IPK

In September 2012 a European collaborative project was launched entitled "Hard Material Small-Batch Industrial Machining Robot (HEPHESTOS)". HEPHESTOS' main objective is to develop novel technologies for the robotic hard material removal that will provide standard industrial robots with advanced techniques in machining planning, programming and real-time control. Hard materials machining has recently attracted great attentions from the advanced industries, in particular, the European automotive, the aerospace and the biomedical industries. However, the existing technology failed to provide these industries with a cost efficient solution to cope with small-batch production of large and complex-shaped products. The project HEPHESTOS, with its focus on developing sophisticated methods in robotic manufacturing, shall give rise to a cost-efficient solution in hard materials machining for this small-batch production of highly customized products through the application of industrial robots.

关键词： Hard materials batch production industrial robots industrial machining Robot machining industries

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design and concept of a haptic robotic telerehabilitation system for upper limb movement training after stroke

Design and concept of a haptic robotic telerehabilitation sy...

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IEEE International Conference on Rehabilitation Robotics (ICORR)

作者： Ekaterina Ivanova Jörg Krüger Robert Steingräber Simone Schmid Henning Schmidt Stefan Hesse Rehabilitation Robotics Group (IPK/TUB) Itechnische Universität Berlin Berlin Germany Rehabilitation Robotics Group (IPK/TUB) Fraunhofer Institute for Production Systems and Design Technology (IPK) Berlin Germany Rehabilitation Robotics Group (IPK/TUB) Technische Universität Berlin Berlin Germany Center for Stroke Research Berlin Charité - Universitätsmedizin Berlin Berlin Germany

Robotic therapy devices have been an important part of clinical neurological rehabilitation for several years. Until now such devices are only available for patients receiving therapy inside rehabilitation hospitals. Since patients should continue rehabilitation training after hospital discharge at home, intelligent robotic rehab devices could help to achieve this goal. This paper proposes a novel multimodal home therapy concept and robot based system for motor telerehabilitation which is currently being further developed. The system is based on two haptic rehabilitation devices i) the Bi-Manu-Track (BMT) 2×1 DOF robotic haptic rehabilitation device with assist-as-needed control algorithms and ii) an enhanced version of the 3 DOF passive Reha-Slide system. The paper describes the technical system setup as well as user centered design aspects.

关键词： Medical treatment Haptic interfaces Training Visualization Rehabilitation robotics Games

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Microcrack Formation During Gas Metal Arc Welding of High-Strength Fine-Grained Structural Steel

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Acta Metallurgica Sinica(English Letters) 2014年第1期27卷 140-148页

作者： Christoph Heinze Thomas Michael Andreas Pittner Michael Rethmeier Division 9.3 "Welding Technology" BAM Federal Institute for Materials Research and TestingUnter den Eichen 8712205 BerlinGermany Joining and Coating Technology Fraunhofer-Institute for Production Systems and Design Technology IPKPascalstraβe 8-910587 BerlinGermany

The recent development of high-performance-modified spray arc processes in gas metal arc welding due to modern digital control technology and inverter power sources enables a focused spray arc, which results in higher penetration depths and welding speed. However, rnicrocracks occurred in the weld metal while approaching the process limits of the modified spray arc, represented by a 20-mm double layer DV-groove butt-weld, These cracks were detected in structural steel exhibiting a yield strength level of up to 960 MPa and are neither dependent on the used weld power source nor a consequence of the modified spray arc process itself. The metallographic and fractographic investigations of the rather exceptional fracture surface lead to the classification of the microcracks as hot cracks, The effects of certain welding parameters on the crack probability are clarified using a statistical design of experiment. However, these microcracks do not impact the design specification for toughness in the Charpy V-notch test （absorbed energy at -40 ℃ for the present material is 30 J）.

关键词： High-strength low-alloy steel Welding Fracture design of experiments Microcracking

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Robot control as a service — Towards cloud-based motion planning and control for industrial robots

Robot control as a service — Towards cloud-based motion pla...

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International Workshop on Robot Motion and Control (RoMoCo)

作者： Axel Vick Vojtěch Vonásek Robert Pěnička Jörg Krüger Department of Industrial Automation Technology Technische Universität Berlin Berlin Germany Faculty of electrical engineering Czech Technical University in Prague Prague Czech Republic Department of Robotics and Automation Fraunhofer Institute for Production Systems and Design Technology IPK Berlin Germany

关键词： Planning Collision avoidance Service robots Robot kinematics Robot sensing systems Interpolation

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Strategies to improve the measuring time for industrial X-ray 3D Computed Tomography 14

Strategies to improve the measuring time for industrial X-ra...

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14th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2014

作者： Uhlmann, E. Oberschmidt, D. Sawczyn, N. Institute for Machine Tools and Factory Management Technische Universität Berlin Germany Fraunhofer IPK Institute for Production Systems and Design Technology Germany

ISBN: (纸本)9780956679031

The measuring time tm is a limiting factor for the application of industrial X-ray 3D Computed Tomography (CT) as a test method for measuring tasks, especially in technical application areas with varying components [1]. The paper shows the influence of the number of projections np and the rotation technique on the image quality in dependence of the geometry and material of test objects for industrial X-ray 3D CT.

关键词： Computerized tomography

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Additive Manufacturing of Titanium Alloy for Aircraft Components

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Procedia CIRP 2015年 35卷 55-60页

作者： Eckart Uhlmann Robert Kersting Tiago Borsoi Klein Marcio Fernando Cruz Anderson Vicente Borille Fraunhofer Institute for Production Systems and Design Technology IPK Pascalstr. 8-9 10587 Berlin Germany Embraer S/A Avenida Brigadeiro Faria Lima 2170 São José dos Campos 12227-901 São Paulo Brazil Aeronautical Institute of Technology CCM/ITA Praça Marechal Eduardo Gomes 50 São José dos Campos 12228-900 São Paulo Brazil

Selective Laser melting (SLM) is an additive manufacturing technology that uses laser as a power source to sinter powdered metals to produce solid structures. The application of SLM permits engineers to develop and implement components with topologically optimized designs and resultant material properties in comparison to conventionally produced casting parts. Current aviation programs as ACARE 2020 (Advisory Council for Aviation Research and Innovation in the EU) and Flightpath 2050 request a reduction of fuel consumption as well as CO 2 and NOx emissions in the next years. To meet these requirements there is a clear trend to produce light-weight components for engines and structural parts of aircrafts through SLM. Since SLM process is a key technology for aeronautical application, this paper focusses on the qualification of a high performance titanium alloy as well as on the investigation of optimized process parameters and positioning strategies of the structures produced in the SLM machine.

关键词： additive manufacturing titanium alloy light-weight components aircraft

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