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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Jens Ziegler Sebastian Heinze Leon Urbas Chair of Process Control Systems Engineering Technische Universität Dresden

This paper presents a study on the potential of today's smartwatches as a complementary user interface to mobile support systems for industrial maintenance tasks. Starting from challenges, usage scenarios and use cases for the valuable use of smartwatches in an industrial context, the various possibilities of information delivery, task support and process control using smartwatches are evaluated and checked against basic ergonomic requirements on data pre-processing, user interface design and the hardware equipment. A prototypical implementation of a support system for industrial maintenance tasks illustrates the applicability of the derived interaction concepts and design guidelines for smartwatch-equipped mobile support systems.

关键词： Mobile communication Maintenance engineering User interfaces Context Androids Humanoid robots Navigation

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Towards an integrated use of simulation within the life-cycle of a process plant: A prototypical implementation

Towards an integrated use of simulation within the life-cycl...

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IEEE Conference on Emerging Technologies and Factory Automation

作者： Mathias Oppelt Gerrit Wolf Leon Urbas Siemens AG Technische Universitat Dresden Chair for Process Control Systems Engineering

ISBN: (纸本)9781467379304

Modern process plants are becoming more and more complex with high demands placed on design, engineering and operation. Throughout the life-cycle of process plants there is always the typical conflict involving costs, time and quality. One way of resolving this conflict is to employ simulation technology as it can be used to answer questions relating to engineering and operation earlier and with lower risks. In 2014, the authors conducted a global online survey investigating the current and future role of simulation within the life-cycle of a process plant. Based on the responses of more than 200 participants, fields of action and requirements have been drawn up to help reach the goal of continuously using simulation in the future. A first prototypical implementation towards concurrently using simulation within the life-cycle of a process plant is presented in this paper. This prototype uses tools for simulation, plant design and process automation that are available today and focuses on the engineering and operational phase of the life-cycle.

关键词： Simulation process automation Plant design Virtual commissioning Operator training Optimization

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Towards Collaborative Plant control using a Distributed Information and Interaction Space

Towards Collaborative Plant Control using a Distributed Info...

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IEEE Conference on Emerging Technologies and Factory Automation

作者： Johannes Pfeffer Markus Graube Patrick Reipschlaeger Stephan Arndt Leon Urbas Raimund Dachselt Ralph Stelzer Chair of Process Control Systems Engineering Technische Universitat Dresden Interactive Media Lab Dresden Technische Universitat Dresden Chair of Engineering Design and CAD Technische Universitat Dresden

ISBN: (纸本)9781467379304

As Smart Manufacturing, Industrial Internet, Industrie 4.0, and Cyber-Physical Production System (CPPS) are becoming reality, the way process and manufacturing plants are operated has to change. Additionally, these developments - constituting the pervasive digitalisation of industry - have a profound effect on the way human workers and machines interact. This paper contrasts the current state of the art in plant control with a vision for the future. The scenario is illustrated by a realistic problem-solving process in a chemical plant. It describes an integrated industrial information and interaction space that leverages emerging technologies to enable plant operators to remain in control of future flexible modularised process plants. Our approach shows the advantages of an integrated information space which feeds interaction and collaboration using Virtual Reality (VR), novel display technologies and mobile devices.

关键词： Plant control interaction space information space Manufacturing plants chemical plant Leverage DISPLAYING Mobile devices state of the art current status machine Arts Sight

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Integrated Virtual Commissioning an essential Activity in the Automation engineering process: From virtual commissioning to simulation supported engineering

Integrated Virtual Commissioning an essential Activity in th...

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Annual Conference of the IEEE Industrial Electronics Society

作者： Mathias Oppelt Leon Urbas Siemens AG Technische Universitat Dresden Chair of Process Control Systems Engineering

ISBN: (纸本)9781479940318

Production plants within manufacturing and process industries are becoming more and more complex systems. For a safe and demand sufficient production the automation system of a production plant is mission critical. Therefore the correct functioning and engineering of the automation system is essential. Nowadays the use of a virtual commissioning step before deploying the automation software on the real production plant is used more often. Within the virtual commissioning the automation software is tested against a virtual plant model, sufficient to check out the correct functioning of the automation system. Usually virtual commissioning is used as a step at the end of the automation engineering, as proposed by VDI 4499. Within this paper an integrated virtual commissioning is proposed, where the automation software is continuously tested against a virtual plant model during the overall engineering phase. The virtual plant is growing together with the automation software and thus enables simulation supported automation engineering. Benefits of the proposed workflow are that errors can be detected immediately after the implementation and the use of the virtual plant model could be extended to various stages of the engineering workflow.

关键词： Virtual commissioning Simulation Automation engineering Simulation supported testing

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Modular and active learning to support asynchronous learning in automation engineering

Modular and active learning to support asynchronous learning...

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International Conference on Information Technology Based Higher Education and Training, ITHET

作者： Annett Krause Leon Urbas Technische Universität Dresden Chair for Process Control Systems Engineering Dresden Germany

This paper discusses the application of modular and active learning concepts to courses in automation engineering for both vocational training and higher education. In the implemented concept, a course consists of several modular learning units that address different aspects of a single automation engineering process. To realize the complete cycle of activities every learning unit consists of a defined sequence of chapters, namely objectives, theoretical concepts, task definition, planning, and exemplary solution. The objective describes the contents so that the learner can decide if it matches his own objectives. Afterwards, theoretical concepts relevant to the objectives are presented to impart the basic knowledge. Now the definition of the tasks follows to realize the phase “recognition”. To combine the theory and the task the next part is planning to implement the phase “thinking”. Despite the fact that this phase is extremely important in the context of automation engineering, analysis of other course material and feedback from experienced trainers show that it is often skipped and is available only implicitly. By presenting one part of the solution the learner is led to a first solution. The presentation is done by structured step by step instructions so the learner can either follow every single item or only the main steps depending on his own level of knowledge. Eventually learners may evaluate a checklist to gain feedback which parts they managed and which ones they might want to repeat. After having finished the guided part successfully learners can switch to the exercises. Here they will get a task and need to plan their activities themselves. First evaluation results gained in a workshop with teachers support the hypothesis that the implemented concept is highly supportive.

关键词： Automation Programming Hardware Periodic structures Training process control

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Triangular Fuzzy Number Representation of Relations in Fuzzy Cognitive Maps

Triangular Fuzzy Number Representation of Relations in Fuzzy...

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IEEE International Conference on Fuzzy systems

作者： Engin Yesil M. Furkan Dodurka Leon Urbas Control and Automation Engineering Department Istanbul Technical University Istanbul Turkey Chair of Process Control Systems Engineering Technology University of Dresden Germany

In this paper, the conventional Fuzzy Cognitive Maps (FCMs), which has already achieved success in many fields, are extended by using triangular fuzzy numbers (TFNs). The advantage of FCMs is that they are relatively easy to construct and parameterize and are capable of handling the full range of system feedback structure, including density-dependent effects. However, it is a well-known fact that there are some limitations inherent in FCM, such as lack of adequate capability to handle uncertain information and lack of enough ability to aggregate the information from different sources. Triangular fuzzy numbers which are represented by a triplet has the capacity to represent the uncertain relations between the concepts. In this context, the weight matrix representing the causal relations are enhanced to a fuzzy weight matrix that has TFNs as element. As a result of this improvement, the dynamic reasoning algorithm of the conventional FCM is improved for the use of the proposed novel FCM. The proposed FCM is presented via four simulations and the results are discussed. The results of the simulation study shows how easily the uncertain information can be represented and interpreted by the proposed FCM design methodology.

关键词： Uncertainty Vectors Cognition Fuzzy sets Pragmatics Fuzzy cognitive maps Modeling

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App-based system diagnosis using mobile information systems

App-based system diagnosis using mobile information systems

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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Jens Ziegler Leon Urbas Henning Lenz Hermann Richter Chair of Process Control Systems Engineering Technische Universität Dresden Industry Sector Siemens AG Karlsruhe

This paper presents a study of the potential of integrated services for app-based system diagnosis using mobile information systems. First, a task and context analysis is provided for the application of integrated system diagnosis in the context of plant asset management (PAM). Second, exemplary scenarios are presented which demonstrate IT services for system analysis based on self-organizing maps, system diagnosis with a graph-based approach and support for therapeutic measures on defective assets. Third, a mobile information system is presented that allows users to list, describe, filter, and select assets, to browse through available diagnoses, and to follow step-by-step instructions for recommended therapeutic measures. The mobile information system provides a graphical representation, description, and selection of assets by using a P&I diagram as well as a chart visualization of process values. The system further provides access to both static and transient data sources such as engineering data of the plant, process data of the technical process and the results of complex analysis services. This mobile information system demonstrates the suitability of the proposed app-based approach. Finally, the results of a focus group workshop are summarized, showing the potential of mobile information systems in an industrial setting, barriers that still remain.

关键词： Mobile communication Information systems Medical treatment Monitoring Maintenance engineering Industries Context

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Flexibility vs. security in linked enterprise data access control graphs

Flexibility vs. security in linked enterprise data access co...

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International Symposium on Information Assurance and Security (IAS)

作者： Markus Graube Patricia Ortiz Manuel Carnerero Oscar Lázaro Mikel Uriarte Leon Urbas Chair for Process Control Systems Engineering Technische Universität Dresden Germany R&D Innovalia Association S.A Bilbao Spain R&D Nextel S.A Bilbao Spain Technische Universitat Dresden Dresden Sachsen DE

Linked Data offers easy extensibility and interoperability of information spaces. This provides a great potential for industrial companies allowing to share information with partners in a virtual enterprise. Hence, together they can become faster and more flexible which results in an advantage in the market. However, there is still the barrier to protect own information with a fine grain. Access control graphs are an approach for this issue. Information is put into different views by executing infer mechanisms on role-based policy rules. Afterwards queries are automatically rewritten at runtime in order to match the generated views and provide only data from views that should be accessible by the authenticated role. This paper demonstrates the balance between flexibility and security using this approach. The amount and complexity of the policy rules are highly dependent on the information model used. However, a moderate restriction of the huge flexibility in the information modelling allows for few rules but those are powerful ones. Additionally, the approach allows can also be leveraged for consistency checking of Linked Data data structures. Thus, clients can rely on these information invariants and the information provider can rely on the fact that fine grained access is granted.

关键词： Irrigation Companies Semantics Servers Standards Maintenance engineering

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Formal Models for High Performance HMI engineering

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IFAC Proceedings Volumes 2012年第2期45卷 854-859页

作者： Leon Urbas Michael Obst Markus Stöss Chair of Process Control Systems Engineering Technische Universität Dresden Dresden Germany

Abstract engineering of Human Machine Interfaces for supervisory control in process industries can be characterized as an information integration task. This is particularly true for configural displays that are the core element of high performance HMI. Design and parameterization of these display units requires a large amount of data, usually readily available in the process design databases but missing in the engineering systems for the automation systems. This class of displays also requires further information that is not yet made available in any database or is not formal enough to provide a base for model driven HMI engineering approaches. We therefore designed a formal model of a computer aided engineering system of human-machine-interaction in supervisory control in process industries and added it to a computer aided engineering system to overcome the restrictions of the approach presented in Urbas and Doherr (2011). The model now addresses the abstraction-decomposition space of ecological interfaces by a simple hierarchical HMI level model and a method to efficiently collect information from P&IDs. This allows for task specific assemblies of process data and provides basic means to integrate standard mimics and complex displays. However, because the information integration is the core feature of configural displays, the formal basis for model based HMI engineering needed to be enhanced substantially. This paper presents the resulting core model and a graph-based search algorithm. The algorithm makes it possible to parameterize a certain set of configural displays directly from engineering data.

关键词： Human-machine interface supervisory control model driven software development computer-aided engineering graph theoretic models process automation model driven ecological interface engineering

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Beyond app-chaining: Mobile app orchestration for efficient model driven software generation

Beyond app-chaining: Mobile app orchestration for efficient ...

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International Conference on Emerging Technologies and Factory Automation (ETFA)

作者： Jens Ziegler Markus Graube Johannes Pfeffer Leon Urbas Chair of Process Control Systems Engineering Technische Universität Dresden Germany

Mobile apps are a success story for mobile devices, particularly in the consumer sector. Tailored to a specific task, they offer optimal usability for a defined class of devices. However, today's apps are neither designed to collaborate with complex workflows nor to support these. To overcome this limitation, we developed the concept of Mobile App Orchestration. This pragmatic model driven software generation approach makes it possible to use mobile apps even in complex industrial workflows. We demonstrate the entire development process in a use case and explain solutions and challenges of our approach. An experimental evaluation of a manually conducted orchestration with 11 participants supports our design hypothesis that the proposed approach can deliver usable mobile support systems for Virtual Factories.

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