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23rd IEEE International Conference on Emerging Technologies and Factory Automation, ETFA 2018

作者： Malakuti, Somayeh Bock, Jurgen Weser, Michael Venet, Pierre Zimmermann, Patrick Wiegand, Mathias Grothoff, Julian Wagner, Constantin Bayha, Andreas ABB Corporate Research Center Ladenburg Germany RD Corporate Research KUKA Deutschland GmbH Augsburg Germany Digital Engineering Fraunhofer IGCV Augsburg Germany Advanced Product Engineering Festo AG Co. KG Esslingen Germany Department of Process Control Engineering RWTH Aachen University Aachen Germany Model-based Systems Engineering Fortiss GmbH Munich Germany

ISBN: (纸本)9781538671085

Skill-based engineering is gaining attention as a means to increase flexibility and changeability in engineering industrial automation systems. This paper proposes the Skill-based engineering Model (SEM), which formally describes the core entities that play a role in skill-based engineering. Accordingly, we propose a four dimensional classification scheme for skills, and assess the suitability of a property model and OWL ontologies to describe and match skills. For each case, we identify a list of challenges that must be addressed to make skill-based engineering a reality in industrial automation systems. We believe that this paper can guide researchers to study various open aspects of skill-based engineering to make it feasible in complex industrial automation systems. © 2018 IEEE.

关键词： Ontology

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Lyapunov Equation Based Stability Mapping Approach: A MIMO Case Study

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IFAC-PapersOnLine 2016年第9期49卷 130-135页

作者： Mutlu, Ilhan Schrödel, Frank Bajcinca, Naim Abel, Dirk Söylemez, M. Turan Control and Automation Engineering Department Istanbul Technical University Istanbul Turkey Institute of Automatic Control RWTH Aachen University Aachen52074 Germany Department of Mechanical and Process Engineering Technical University of Kaiserslautern Kaiserslautern Germany

In this study, a Lyapunov Equation based stability mapping approach is proposed for MIMO systems in order to determine stability regions. Since the proposed approach is independent of the controller type and the number of the control variables, it is also applicable for SISO systems. In standard Lyapunov Equation approach, the designer should solve 2n equations to calculate the stabilizing parameter sets. However, it is necessary and sufficient to solve at most two equations in order to determine the stability boundaries in the proposed approach. Moreover, frequency sweeping that is required in most of the frequency domain based approaches is omitted in this approach since the stability problem is defined in the time domain. Several case studies are discussed within the scope of this study to verify the effectiveness of the derived theoretical results. © 2016

关键词： Lyapunov functions Convergence of numerical methods Frequency domain analysis Lyapunov methods Mapping MIMO systems Time domain analysis control variable Frequency domains Frequency sweeping Lyapunov equation Stability analysis Stability boundaries Stability problem Stability regions

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An engineerable procedure description method for industrial automation

An engineerable procedure description method for industrial ...

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2013 IEEE 18th International Conference on Emerging Technologies and Factory Automation, ETFA 2013

作者： Yu, Liyong Grüner, Sten Epple, Ulrich Department of Process Control Engineering RWTH Aachen University 52064 Aachen Germany

ISBN: (纸本)9781479908622

Describing procedures is essential for modeling and controlling technical processes. Although various procedure description methods are available from computer science, system theory and industrial automation, they are only partially suitable as a generic method for engineering automation procedures. In order to close this gap, we propose a procedure description formalism together with a concept of its integration into existing automation systems. By utilizing of the proposed means we obtain an engineerable, generic and user accepted procedure description method. © 2013 IEEE.

关键词： Automation

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Laying a basis for service systems in process control

Laying a basis for service systems in process control

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2013 IEEE 18th International Conference on Emerging Technologies and Factory Automation, ETFA 2013

作者： Evertz, Lars Epple, Ulrich Department of Process Control Engineering RWTH Aachen University Turmstraße 46 52064 Aachen Germany

ISBN: (纸本)9781479908622

To meet the flexibility demands introduced by modern markets, process plants have to become more flexible themselves. To tackle this issue and to ease vertical integration of IT-systems in enterprises a service-oriented approach is promising. Despite the developments concerning service-oriented architectures there is no standardized interface for service systems in process control systems. Therefore, in this paper we lay a basis for service systems in process control. We propose a message format and a way to describe services. We show which actions of a service interaction sequence have to be done in the engineering phase and which can be done at runtime. This is needed to meet non-functional requirements of control applications. The overall aim of the service system is to enhance flexibility without creating new dependencies. © 2013 IEEE.

关键词： Information services

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Symbolic model-based testing for industrial automation software

Symbolic model-based testing for industrial automation softw...

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9th Haifa Verification Conference, HVC 2013

作者： Von Styp, Sabrina Yu, Liyong Software Modeling and Verification Department of Computer Science Germany Process Control Engineering RWTH Aachen University Germany

ISBN: (纸本)9783319030760

In industrial automation software controls systems whose failure can be critical and expensive. Testing this software is very crucial but so far done manually, an expensive and not very thorough method. Model-based testing is an emerging concept in computer science for automatically testing a real implementation. It uses a formal specification describing the system behaviour. This specification is the blue print against which an implementation is tested. This paper presents how to use model-based testing in industrial automation. In detail it shows how the known concepts such as sequential function charts, used in industrial automation to describe a system, can be translated to a format that is required for model-based testing, including an automatic derivation of test-cases and its execution. A concrete case study illustrates the strength of this approach. © 2013 Springer International Publishing Switzerland.

关键词： Formal specification

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On the way to autonomous model predictive control: A distillation column simulation study

On the way to autonomous model predictive control: A distill...

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10th IFAC Symposium on Dynamics and control of process Systems, DYCOPS 2013

作者： Annergren, M. Kauven, D. Larsson, C.A. Potters, M.G. Tran, Q. Özkan, L. Automatic Control Lab. and ACCESS School of Electrical Engineering KTH SE-100 44 Stockholm Sweden RWTH Aachen University AVT - Process Systems Engineering Turmstr. 46 52064 Aachen Germany Delft Center for Systems and Control Delft University of Technology Mekelweg 2 2628 CD Delft Netherlands Department of Electrical Engineering Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven Netherlands

ISBN: (纸本)9783902823595

Model Predictive control (MPC) is a powerful tool in the control of large scale chemical processes and has become the standard method for constrained multivariable control problems. Hence, the number of MPC applications is increasing steadily and it is being used in application domains other than petrochemical industries. A common observation by the industrial practitioners is that success of any MPC application requires not only efficient initial deployment but also maintenance of initial effectiveness. To this end, we propose a novel high level automated support strategy for MPC systems. Such a strategy consists of components such as performance monitoring, performance diagnosis, least costly closed loop experiment design, re-identification and autotuning. This work presents the novel technological developments in each component and demonstrates them on a distillation column case study. We show that automated support strategy restores nominal performance after a performance drop is detected and takes the right course of action depending on its cause. © IFAC.

关键词： Model predictive control

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A model-based implementation of function block diagram

A model-based implementation of function block diagram

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Dagstuhl-Workshop MBEES: Modellbasierte Entwicklung eingebetteter Systeme VIII - 8th Workshop on Model-Based Development of Embedded Systems, MBEES 2012

作者： Grüner, Sten Kampert, David Epple, Ulrich Department of Process Control Engineering RWTH Aachen University Germany

The process industry is a special application domain for embedded systems with demands emphasizing flexibility, reliability and long-term runtime. One of the programming languages applied in this domain is the IEC-standardized language FBD (Function Block Diagram). In this paper, an object-oriented model-based implementation of FBD is introduced and its architecture and runtime-behavior are presented. Main features of the framework are function block engineering at runtime, multiplatform support, C99-compliance and support of object-oriented distributed communication. Finally, example use-cases of automation systems from research projects and education are discussed.

关键词： Embedded systems

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Rule-based adaption of distributed automation systems at operation time

Rule-based adaption of distributed automation systems at ope...

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14th IFAC Symposium on Information control Problems in Manufacturing, INCOM'12

作者： Krausser, Tina Mersch, Henning Epple, Ulrich Department of Process Control Engineering RWTH Aachen University 52056 Aachen Germany

ISBN: (纸本)9783902661982

Automation systems are not monolithic systems. Rather the functionality of an automation systems is normally distributed on a wide set of different components. Such a distribution of automation system functionality raises particular challenges for system-modifications at operation time, especially the consistency along all distributed components has to be guaranteed. In this paper a framework for the automated broadcasting of modifications and the rule-based adaption of related automation functions is presented. The constraints for such an automatic adaption are illustrated and especially the challenges that come along with the adaption at operation time are elucidated. The paper proposes a service-oriented rule-based approach towards the automatic adaption. The developed concept is evaluated with the help of a prototype implementation and with the application of the prototype to a demonstration pumping plant. Further investigations, especially in the domain of formal engineering guidelines, are elucidated. © 2012 IFAC.

关键词： Manufacture

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On The Way To Autonomous Model Predictive control: A distillation column simulation study 1

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IFAC Proceedings Volumes 2013年第32期46卷 713-720页

作者： M. Annergren D. Kauven C.A. Larsson M.G. Potters Q. Tran L. Ozkan Automatic Control Lab and ACCESS School of Electrical Engineering KTH SE-100 44 Stockholm Sweden RWTH Aachen University AVT - Process Systems Engineering Turmstr. 46 52064 Aachen Germany Delft Center for Systems and Control Delft University of Technology Mekelweg 2 2628 CD Delft The Netherlands Department of Electrical Engineering Eindhoven University of Technology P.O. Box 513 5600 MB Eindhoven The Netherlands

Model Predictive control (MPC) is a powerful tool in the control of large scale chemical processes and has become the standard method for constrained multivariable control problems. Hence, the number of MPC applications is increasing steadily and it is being used in application domains other than petrochemical industries. A common observation by the industrial practitioners is that success of any MPC application requires not only encient initial deployment but also maintenance of initial effectiveness. To this end, we propose a novel high level automated support strategy for MPC systems. Such a strategy consists of components such as performance monitoring, performance diagnosis, least costly closed loop experiment design, re-identification and autotuning. This work presents the novel technological developments in each component and demonstrates them on a distillation column case study. We show that automated support strategy restores nominal performance after a performance drop is detected and takes the right course of action depending on its cause.

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An assistance system approach for flexible product transport operations in process plants

An assistance system approach for flexible product transport...

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作者： Yu, Liyong Quirós, Gustavo Epple, Ulrich Department of Process Control Engineering RWTH Aachen University Aachen Germany

ISBN: (纸本)9783902661937

In today's process industry, the computer-aided automation of engineering processes appears to have a great potential for helping to increase the efficiency of the production and to improve the quality of products, while lowering the costs of both the engineering and the reengineering of existing solutions. Nevertheless, this technique has the drawback of isolating qualified users from the execution of the system. In this paper we present an approach for an assistance system for the execution of product transport operations in complex pipeline networks. By using this approach, these operations can be accomplished semi-automatically - from task definition to final execution with field devices. The assistance system knows which part of the task can be automated and in which circumstances the user should be consulted in order to provide decision-making based on her/his experience. Such an approach can also be used as a guideline for the design of future assistance systems. © 2011 IFAC.

关键词： process control

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