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Multidimensional Analysis of Process Chains Regarding the Resource-efficient Manufacturing of Hybrid Structures

Procedia CIRP 2015年 26卷 595-600页

作者： C. Fanghänel A. Rautenstrauch C. Symmank J. Katzenberger M. Putz V. Kräusel U. Götze B. Awiszus Fraunhofer Institute for Machine Tools and Forming Technology Reichenhainer Straße 88 09126 Chemnitz Germany Technische Universität Chemnitz Professorship for Machine Tools and Forming Technology Reichenhainer Straße 70 09126 Chemnitz Germany Technische Universität Chemnitz Professorship Management Accounting and Control Thüringer Weg 7 09126 Chemnitz Germany Technische Universität Chemnitz Professorship Virtual Production Engineering Reichenhainer Straße 70 09126 Chemnitz Germany

One of the leading topics in the automotive industry as well as in the aircraft and aerospace sector is the use of lightweight structures for weight reduction. For this purpose, hybrid materials, e.g. metal-plastic structures, are of essential importance. Despite the high technological challenge, the manufacturing techniques still provide versatile development potential. Especially the integration of separate production techniques in one single tool opens new possibilities of successfully designing a resource-efficient process chain for hybrid components, suitable for series production. Within the Cluster of Excellence “MERGE Technologies for Multifunctional Lightweight Structures”, a modelling approach for the resource-efficient process design of the manufacturing of hybrid structures, which is based on a multidimensional analysis, will be developed. Besides the technical optimisation, the energy efficiency, the cost-effectiveness, the robustness of process chains as well as the maturity regarding series production will be considered during the entire development process. The paper will present main features of this modelling approach including a proposal for a systematic and structured procedure of a multidimensional analysis.

关键词： cost-effectiveness energy efficiency hybrid components maturity analysis resource-efficient process chain robustness

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Efficient Combination of Topology and Parameter Optimization

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Open Journal of Optimization 2014年第3期3卷 19-25页

作者： Yusheng Lin Zheng Sun Alexandru Dadalau Alexander Verl Institute for Control Engineering of Machine Tools and Manufacturing Units (ISW) University of Stuttgart Stuttgart Germany

This paper presents a combination method of Particle Swarm Optimization (PSO) and topology optimization. With this method a better result can be achieved compared with the sequential application of these two optimization methods. It inherits the ability in finding global optimum from PSO and also suits for discretized design domain. Some special schemes are used in order to provide higher computation efficiency. This method has only been tested with a convex optimization problem. The application in case of a concave problem will be a future study.

关键词： Topology Optimization Parameter Optimization Combination Optimization PSO Structure Design

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Aspects concerning the modeling of robots with increased dexterity 45

Aspects concerning the modeling of robots with increased dex...

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Joint Conference of ISR 2014 - 45th International Symposium on Robotics and Robotik 2014 - 8th German Conference on Robotics, ISR/ROBOTIK 2014

作者： Lapusan, C. Fodor, F. Csiszar, A. Verl, A. Brisan, C. Department of Mechatronics and Machine Dynamics Technical University of Cluj-Napoca Cluj-Napoca Romania Graduate School of Excellence Advanced Manufacturing Engineering University of Stuttgart Germany Institute for Control Engineering of Machine Tools and Manufacturing Units University of Stuttgart Stuttgart Germany

ISBN: (纸本)9783800736010

Robotic structures have been a subject to continuous innovation since their presence. This paper presents a new approach to solve the inverse kinematics problem of the "HIDRA" (HIghDexterityRoboticArm). A SimMechanics trunk model has been developed based on which a position control algorithm will be developed. The published experimental results, coming from numerical simulations, validate the similarity of our kinematic model, and our new approach of determining the lengths of the bellows. This new approach presents the correlation between the physical characteristics and the elongation provided by variable air pressure. © VDE VERLAG GMBH Berlin Offenbach.

关键词： Inverse problems

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Autonomous Systems for Maintenance Tasks – Requirements and Design of a control Architecture

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Procedia Technology 2014年 15卷 595-604页

作者： Christian Friedrich Armin Lechler Alexander Verl Institute for Control Engineering of Machine Tools and Manufacturing Units Seidenstraße 36 Stuttgart 70174 Germany

The technological change of the maintenance process from reactive to preventive methods correlates with the awareness, that maintenance is not only a cost factor but a business process, which is part of the added value of a company. The automation of maintenance tasks allows to plan the operation optimally and fast. This creates a significant economic advantage for the manufacturing industry and is the opportunity for autonomous systems to show their potential. The following work gives an introduction into the possibilities to automate the maintenance process, suggestions and a probable concept architecture for automated services and maintenance.

关键词： Automated maintenance condition monitoring autonomous systems control architecture

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Automatic Conformance Test Generation Based on a Verified Model of a Bus System Standard

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Procedia CIRP 2014年 25卷 305-312页

作者： Armin Lechler Tomas Macias Agus Atmosudiro Institute for Control Engineering of Machine Tools and Manufacturing Units Seidenstr. 36 Stuttgart 70174 Germany

In automation domain, the conformance of field bus devices in regard to the corresponding bus system standard is ensured by deploying conformance tests. The correctness of the tests is therefore decisive. A common practice to develop conformance test manually is fault-prone due to the fact that the test engineer can misinterpret the standard or the standard itself has defects. Therefore, in this present work we argue that a conformance test development should be based on formally verified requirements and propose an approach to automatically generate conformance tests based on the verified model of a bus system standard in order to assure the test correctness.

关键词： Model-based engineering Automatic test generation Conformance test

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Aspects concerning kinetostatic properties of parallel robots 45

Aspects concerning kinetostatic properties of parallel robot...

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Joint Conference of ISR 2014 - 45th International Symposium on Robotics and Robotik 2014 - 8th German Conference on Robotics, ISR/ROBOTIK 2014

作者： Brisan, Cornel Boanta, Catalin Csiszar, Akos Verl, Alexander Department of Mechatronics and Machine Dynamics Technical University of Cluj-Na-poca Cluj-Napoca Romania Graduate School of Excellence Advanced Manufacturing Engineering University of Stuttgart Stuttgart Germany Institute for Control Engineering of Machine Tools and Manufacturing Units University of Stuttgart Stuttgart Germany

ISBN: (纸本)9783800736010

This paper presents a factorial analysis of the compensation of dynamic characteristics of a special class of reconfigurable haptic device. The haptic device is a reconfigurable parallel structure with having a revolute joint as actuated joint. In order to decrease the inertia and the moving mass of the mechanism this actuated joint is attached to the fixed platform of the mechanism. The haptic device interacts with a human operator by the means of its end effector. The dynamic compensation takes in consideration the mechanical properties of the robot in order to achieve a "transparent" mechanical structure. A "transparent" mechanical structure implies that forces or movements rendered through a haptic device remain unaltered due to friction, inertia or gravity (i.e. dynamic behavior) of the structure. Interaction with a virtual world has to be an immersive experience. The 'transparent' mechanical structure achieved by dynamic compensation facilitates the immersiveness of the haptic experience. © VDE VERLAG GMBH Berlin Offenbach.

关键词： Fixed platforms

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Communication Mechanisms for Cloud based machine controls

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Procedia CIRP 2014年 17卷 830-834页

作者： Jan Schlechtendahl Felix Kretschmer Armin Lechler Alexander Verl Institute for Control Engineering of Machine Tools and Manufacturing Units (ISW) Seidenstr.36 70174 Stuttgart Germany

Current machine tool controls are limited from a technical viewpoint in different areas like scalability, start-up and reconfiguration time and security of the process knowledge against unwanted access, to only name some of them. These limitations demand for a radically new concept for machine controls addressing current and future requirements. The chosen approach is to split the physical location of the machine tool control from the machine tool and move the control in a cloud providing machine control as a service (MCaaS). This paper presents the concept of how the communication between machine and cloud-based control could be realized.

关键词： cloud based manufacturing cyber physical system realtime communication

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Flexible, Self-configuring control System for a Modular Production System

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Procedia Technology 2014年 15卷 398-405页

作者： Stefan Scheifele Jens Friedrich Armin Lechler Alexander Verl Institute for Control Engineering of Machine Tools and Manufacturing Units (ISW) University of Stuttgart Seidenstr. 36 70174 Stuttgart Germany

This paper presents a control concept of a modular manufacturing system (MPS). Having exchangeable process modules, the system can produce a wide range of products. For process modules a new concept for a Configuration and Information Memory (CIMory) is proposed. The CIMory provides a description of the module and its capabilities. Based on this information the control system, as well as the guidance system configures itself. The control follows a holistic approach with a hybrid structure to support both, modules with internal intelligence or with a simple command executing I/O unit. A Workflow Manager (WFM) organizes the production processes and the data exchange between all modules and the human-machine interface (HMI).

关键词： Modular Production System (MPS) Configuration and Information Memory (CIMory) Workflow Manager (WFM) self-configuration

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A Model- and Signal-based Power Consumption Monitoring Concept for Energetic Optimization of machine tools

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Procedia CIRP 2014年 15卷 44-49页

作者： Philipp Eberspächer Philipp Schraml Jan Schlechtendahl Alexander Verl Eberhard Abele Institute for Control Engineering of Machine Tools and Manufacturing Units (ISW) Seidenstraße 36 70174 Stuttgart Germany Institute of Production Management Technology and Machine Tools (PTW) Otto-Berndt-Str. 2 64287 Darmstadt Germany

As energy consumption is one of the main drivers for production and operational cost of a product, it is necessary to make operators of manufacturing units and machine tools aware of the current power consumption of their operating equipment. However, it is not sufficient to provide the current overall power consumption but to give different levels of detail. This paper presents an approach to combine power measurements, control signals and information with consumption simulation models to provide the operators with highly detailed power consumption data and how it is distributed over the components of their machine tools. An implementation of the monitoring approach on a HSC milling machine is presented in detail, followed by an overview of its use for energetic optimization.

关键词： energy efficiency consumption modeling energy monitor ECOMATION energy optimization machine tools

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A robust algorithm for autotuning controllers in mechatronic modules

A robust algorithm for autotuning controllers in mechatronic...

引用

WGP Congress 2014

作者： Friedrich, Christian Stanicki, Andreas Bröcker, Markus Lechler, Armin Verl, Alexander Universität Stuttgart Institute for Control Engineering of Machine Tools and Manufacturing Units Seidenstraße 36 Stuttgart Germany Schunk GmbH and Co. KG R and D Automation and Mechatronics Bahnhofstraße 106-134 Lauffen/Neckar Germany Hochschule Heilbronn Laboratory for Control Engineering and System Simulation Max-Planck-Straße 39 Heilbronn Germany

ISBN: (纸本)9783038352457

Electric actuators are an important part of every manufacturing system. Often it is a problem to get a good motion control configuration which allows high performance tasks. This contribution shows how the mechanical load and the self-dynamics of the system associate. Based on this, it is possible to formulate an identification algorithm to estimate the mechanical load. Now all system parameters are known and the controller can be computed automatically. Therefore we show the results in an experiment with a classic cascaded and a flatness-based controller. © (2014) Trans Tech Publications, Switzerland.

关键词： Actuators

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