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检索条件"机构=The Institute for Control Engineering of Machine Tools and Manufacturing Units"

共 337 条记录，以下是1-10 订阅

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Interoperable Digital Product Passports: An Event-Based Approach to Aggregate Production Data to Improve Sustainability and Transparency in the manufacturing Industry

Interoperable Digital Product Passports: An Event-Based Appr...

引用

2024 IEEE/SICE International Symposium on System Integration, SII 2024

作者： Ajdinović, Samed Strljic, Matthias Lechler, Armin Riedel, Oliver Institute for Control Engineering of Machine Tools and Manufacturing Units University of Stuttgart Germany

ISBN: (纸本)9798350312072

The manufacturing industry is increasingly focused on sustainability, requiring greater product transparency to meet sustainability targets. Digital Product Passports (DPPs) have emerged as a potential solution to improve recyclability and inform consumer purchasing decisions. However, there is a lack of methodology and digital representation for building DPPs, which hinders data linkage and sharing. In this paper, we propose an approach based on standardised data models and event sourcing to aggregate production data, using energy consumption as an example. We present a concept that captures and stores process information using event sourcing in Asset Administration Shells (AAS), and evaluate its feasibility through a manufacturing demonstrator. The results show that event-based aggregation facilitates the creation of DPPs, allowing different actors in the value chain to participate in an interoperable way. By leveraging a standardised and interoperable common data space, this approach improves product transparency, promotes recyclability and enables informed consumer choice in line with sustainability goals. © 2024 IEEE.

关键词： Transparency

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Remote Power control and Monitoring of Cross-Platform Devices Using Magic Packets Across Network Boundaries 3

Remote Power Control and Monitoring of Cross-Platform Device...

引用

3rd IEEE Industrial Electronics Society Annual On-Line Conference, ONCON 2024

作者： Von Arnim, Christian Dalkowski, Evelyn Bodamer, Tobias Selim, Ziya Ellwein, Carsten Wortmann, Andreas Institute for Control Engineering of Machine Tools and Manufacturing Units University of Stuttgart Germany

ISBN: (纸本)9798331540319

This paper compares online device discovery and remote startup and shutdown solutions for an enterprise network. As some of for these solutions do only work in a local network and the enterprise network consists of several subnetworks with different firewalls setting, a concept to communicate securely across subnetworks is required. For an evaluation, a prototype is implemented using Wake-on-Lan for startup, Address Resolution Protocol for online detection and Secure Shell for shutting down. Bridged MQTT-brokers are used to communicate across subnetwork with a service in every subnetwork. The central hosted prototype is able to switch on or off computers remotely in every subnetwork. © 2024 IEEE.

关键词： Remote control

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Cobot for Automated Vision Data: Streamlining Production with Automated Annotations for machine Learning

Cobot for Automated Vision Data: Streamlining Production wit...

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2024 International Conference on Artificial Intelligence, Computer, Data Sciences, and Applications, ACDSA 2024

作者： Zurn, Manuel Dzubba, Marcel Reiff, Colin Ajdinovic, Samed Lechler, Armin Verl, Alexander University of Stuttgart Institute for Control Engineering Machine Tools and Manufacturing Units Stuttgart Germany

ISBN: (纸本)9798350394528

Robotic vision tasks require a large amount of annotated data for effective training and performance. However, the manual creation of such datasets is a complex and time-consuming process. Particularly for smaller companies or those with high product variability, there is a need to optimise the resources dedicated to creating datasets for machine vision applications. This paper investigates novel ways to acquire annotated vision data through the integration of collaborative robots. Two methods are outlined to streamline the generation of annotated datasets. One of these methods is then used to construct a dataset tailored for 6D robotic gripping of an automotive connector. The effectiveness of automated annotated dataset generation is demonstrated by training a deep learning model to accurately estimate the orientation of the automotive connector. © 2024 IEEE.

关键词： Computer vision

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Methods for Localization in Multi-Scale Material Flow Simulation for Virtual Commissioning 4

Methods for Localization in Multi-Scale Material Flow Simula...

引用

4th International Conference on Electrical, Computer, Communications and Mechatronics engineering, ICECCME 2024

作者： Kienzlen, Annika Verl, Alexander Institute for Control Engineering of Machine Tools and Manufacturing Units University of Stuttgart Stuttgart Germany

ISBN: (纸本)9798350391183

While the importance of virtual commissioning is increasing and not only individual machines but also production lines are being simulated, the simulation of material flow for numerous piece goods is still a challenge. Combining models in a multi-scale simulation can exploit their advantages. The macroscopic flow model excels at modeling the behavior of large quantities of piece goods, however, it cannot provide information about individual piece goods. This led to the approach of the combination with a microscopic physics-based model in a multi-scale material flow simulation. To switch between models, the coordinates of the positions (microscopic) have to be translated in one direction into the material description of the macroscopic flow model (the density distribution). In the other direction, the density distribution has to be translated into the coordinates of the positions, leading to a computationally intensive optimization problem. This paper develops various methods for finding a start solution and compares them to a method of the state of the art. The evaluation is based on their accuracy with reference to various parameters of the data set. The results show the best accuracies for the method which traverses the density distribution and calculates the sum of the densities until it matches a single piece good. Depending on the accuracy required, it may be possible to use the start solution directly without further optimization. © 2024 IEEE.

关键词： Digital elevation model

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Towards an Implementation of Simulation Based Digital Twins in Cyber-Physical Production Systems Environments 28

Towards an Implementation of Simulation Based Digital Twins ...

引用

28th IEEE International Conference on Emerging Technologies and Factory Automation, ETFA 2023

作者： Fur, Shan Ajdinović, Samed Lechler, Armin Verl, Alexander Institute for Control Engineering of Machine Tools and Manufacturing Units University of Stuttgart Germany

ISBN: (纸本)9798350339918

The increasing digitization of the manufacturing industry offers a wide range of opportunities for the effective use of production data, which can lead to significant time and cost savings. One promising approach is the use of synchronous simulations during the actual operation of cyber-physical production systems (CPPS) to provide valuable insights into possible performance improvements and at the same time reduce the risk of costly downtime. This paper presents a novel concept that enables structured storage of CPPS production data as part of a digital twin that serves as a virtual replica of the physical production environment. In particular, this approach is based on the Asset Administration Shell (AAS), which provides a comprehensive framework for the management of production data and allows for a seamless integration with simulation models. Storing production data in a structured and standardized format can make data queries efficient, facilitate data processing, and provide a solid foundation for simulation model development, calibration, and validation. These simulation models can then be used to identify potential process improvements and test different scenarios, minimizing the risk of disruption to actual production. © 2023 IEEE.

关键词： Digital storage

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Cloud vs. peer-to-peer manufacturing: a comparative case study 33

Cloud vs. peer-to-peer manufacturing: a comparative case stu...

引用

33rd CIRP Design Conference

作者： Ellwein, Carsten Jainczyk, Björn Alexander Riedel, Oliver Institute for Control Engineering of Machine Tools and Manufacturing Units University of Stuttgart Stuttgart Germany

Cloud manufacturing (CM) applies the concept of manufacturing-as-a-service and offers access to production resources over web-based platforms. Besides centralized CM platforms, the manufacturing-as-a-service principle has been proposed to be integrated in production planning and control systems, creating a decentralized peer-to-peer (P2P) manufacturing paradigma. This paper applies the case study methodology to deduce procurement processes via cloud or P2P manufacturing and to compare them in regard of cost, quality and time. It can be shown that decentralized approaches can outperform centralized CM implementations and that a higher degree of integration into the office floor is mostly beneficial. © 2023 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (https://***/licenses/by-nc-nd/4.0)

关键词： Enterprise resource planning

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Automated manufacturing Toolchain using Skill-based Digital Twins 34

Automated Manufacturing Toolchain using Skill-based Digital ...

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34th CIRP Design Conference, CIRP 2024

作者： Dietrich, David Neubauer, Michael Lechler, Armin Verl, Alexander Institute for Control Engineering of Machine Tools and Manufacturing Units University of Stuttgart Seidenstr. 36 Stuttgart70174 Germany

Digital twins with a skill-based description are increasingly finding their way into industrial production. Their models link properties of a product with available process capabilities that are realized by resource skills. A matchmaking derives capable resources, e.g. for modular assembly systems. For capability-based planning in manufacturing, integration with computer-aided design (CAD) and computer-aided manufacturing (CAM) programs is missing. This paper presents an automated toolchain with focus on subtractive manufacturing using skill-based digital twins. Product-Process-Resource (PPR) models are used and enriched with subtractive manufacturing information and further relations. A configurator allows the design of the individual digital product twin, which can synchronously be generated as a 3D model using a CAD service. Necessary subtractive manufacturing steps including capable resources are then determined in a planning environment and fed into the CAM system. This allows an individual generation of machining code based on PPR information, which can be validated on a simulation model. The result is an automated tool chain of different software services, which are composed by a common description of the PPR model and the software services themselves. By defined models and interfaces the toolchain is not restricted to subtractive manufacturing but enables the integration of computer-aided everything (CAx) services. © 2024 The Authors. Published by Elsevier B.V.

关键词： Smart manufacturing

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Case Study on using Layer Laminate manufacturing for Large Lightweight Parts with high Structural Damping 57

Case Study on using Layer Laminate Manufacturing for Large L...

引用

18th IFAC Workshop on Time Delay Systems, TDS 2024

作者： Helfesrieder, Nico Furcoi, Florentin Jud, Oliver Lechler, Armin Verl, Alexander University of Stuttgart Institute for Control Engineering of Machine Tools and Manufacturing Units Seidenstraße 36 Stuttgart70174 Germany

Layer Laminated manufacturing (LLM) enables the inner optimization of parts through the joining of individually structured layers. Particularly for high-volume metal parts, for which structural optimization and additive manufacturing is possible but typically too expensive, LLM can offer a good alternative. Using adhesive bonding to join the layers, stiffness is expected to decrease, but part damping may be increased strongly. These effects have already been shown individually, but using scientific examples rather than real world examples. Therefore, this paper presents a case study that investigates the extent to which lightweight design and damping can be applied specifically by LLM with adhesive bonding. For this, a machine table of a feed axis is topology optimized, manufactured using the LLM-method, and examined experimentally. The validation includes experimental modal analysis, static bending tests and damping identification in the installation situation. The results indicate high design freedom and lightweight potential for large metallic parts. Additionally, the damping is significantly increased in the isolated examination, but only minor improvements are recognizable in the actual installation situation. © 2024 The Authors.

关键词： Bending tests

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RTNNIgen - An Open-Source PLC Library and Python Generator Converting Keras Models to Realtime Capable Structured Text 50

RTNNIgen - An Open-Source PLC Library and Python Generator C...

引用

50th Annual Conference of the IEEE Industrial Electronics Society, IECON 2024

作者： Hinze, Christoph Zhou, Zexu Xu, Haijia Lechler, Armin Verl, Alexander Institute for Control Engineering of Machine Tools and Manufacturing Units University of Stuttgart Seidenstr. 36 Stuttgart70174 Germany

ISBN: (纸本)9781665464543

Recent advances in AI research are boosting the relevance of realtime neural networks in automation technology. To facilitate the deployment of trained neural networks for realtime applications, where hard limits on upper cycle time are required, this paper contributed a two-fold approach: A Python library for parsing Keras sequential models to structured text using a single function-call, which can be run directly on industrial PLCs and a structured text library to encapsulate reoccurring code and to provide a readable, tested interface for the generated code. The resulting models are experimentally validated regarding their inference time and precision of the outputs. © 2024 IEEE.

关键词： Python

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Properties of a Double Nut Ball Screw with a Passive Spring-Loaded Mechanism for Preload Adjustment 57

Properties of a Double Nut Ball Screw with a Passive Spring-...

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18th IFAC Workshop on Time Delay Systems, TDS 2024

作者： Jud, Oliver Steinle, Lukas Lechler, Armin Verl, Alexander University of Stuttgart Institute for Control Engineering of Machine Tools and Manufacturing Units Seidenstr. 36 Stuttgart70174 Germany

Preloaded ball screws are the preferred choice for high-precision linear motion of feed axes in machine tools. In order to compensate for the loss of preload over the service life and to maintain the typical operating characteristics such as zero backlash and high rigidity, ball screw drives are commonly provided with an excessively high initial preload. However, this leads to increased wear and friction. In this paper, an approach for a spring-loaded mechanism for automatic preload adjustment is presented and investigated in order to keep the required preload approximately constant during operation over the entire service life. © 2024 The Authors.

关键词： Ball screws

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