@inproceedings{ReiffStephan2020, author = {Reiff-Stephan, J{\"o}rg}, title = {Implementation approaches for distributed energy management systems in production}, series = {Conference Proceedings : 1st German-West African Conference on Sustainable, Renewable Energy Systems SusRes : 1st July 2020 - Kara, Togo}, booktitle = {Conference Proceedings : 1st German-West African Conference on Sustainable, Renewable Energy Systems SusRes : 1st July 2020 - Kara, Togo}, doi = {10.15771/978-3-9819225-5-4_SIV-1b}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-13220}, pages = {116 -- 124}, year = {2020}, abstract = {The energy management of manufacturing facilities must be taken increasing account for an efficient operation within a production process. Future efforts and solutions will focus on improvement of the process stability and on cost reduction to meet the needs of successfully compete in local and global markets especially for SME. The paper describes an approach for manufacturing facilities using an example for thermoprocessing equipment. For this purpose, the TPS-principle Jidōka is used, the mechanism of self-adapting limit setting as well as an implementation is presented prototypically.}, language = {en} } @inproceedings{ReiffStephan2020, author = {Reiff-Stephan, J{\"o}rg}, title = {Solar power in product development}, series = {Conference Proceedings : 1st German-West African Conference on Sustainable, Renewable Energy Systems SusRes : 1st July 2020 - Kara, Togo}, booktitle = {Conference Proceedings : 1st German-West African Conference on Sustainable, Renewable Energy Systems SusRes : 1st July 2020 - Kara, Togo}, doi = {10.15771/978-3-9819225-5-4_SII-1b}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-13206}, pages = {55 -- 65}, year = {2020}, abstract = {The availability of electrical energy is one of the essential basic elements for economic growth and humanitarian living conditions. In one of the poorest regions of Western Africa - in the savannah region of northern Togo - the central expansion of electricity grids has not taken place. Decentralized solutions based on renewable energy systems can help here and promote the region's development. In the presented paper, the various renewable energy carrier systems were examined with regard to their use in the savannah region of Western Africa. The solar energy carrier system could be used as a power supplier in the secondary conversion process to mechanical power. Subsequently, a prototype for a clay brick production machine was designed and a digital mock-up was developed. Together with the partners in Togo, the prototype is built and tested in the field. Experiences are being gathered in cooperation with Bonita-Haus and will be incorporated into the educational content in Togo as well as at the Technical University of Wildau. This will make a significant contribution to the utilization of the technology at the site and to improving the living conditions in Western Africa.}, language = {en} } @inproceedings{vandeSandCorasanitiReiffStephan2020, author = {van de Sand, Ron and Corasaniti, Sandra and Reiff-Stephan, J{\"o}rg}, title = {Review of Condition Based Maintenance approaches for vapor compression refrigeration systems}, series = {Conference Proceedings : 1st German-West African Conference on Sustainable, Renewable Energy Systems SusRes : 1st July 2020 - Kara, Togo}, booktitle = {Conference Proceedings : 1st German-West African Conference on Sustainable, Renewable Energy Systems SusRes : 1st July 2020 - Kara, Togo}, doi = {10.15771/978-3-9819225-5-4_SI-2a}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-13369}, pages = {24 -- 33}, year = {2020}, abstract = {Vapor compression refrigeration systems are subject to performance degradation over time due to the presence of faults. However, latest work in the field of condition-based maintenance shows promising results in the automatic early detection of anomalous behaviour as well as in accurate machine diagnostics and can, therefore, increase the overall system reliability by simultaneously preventing machine downtimes. In this paper, the latest research works carried out within the last decade are reviewed and the approaches are classified regarding their working principles. Furthermore, the work at hand depicts the current research trend in this field and outlines current obstacles.}, language = {en} } @misc{ReiffStephan2013, author = {Reiff-Stephan, J{\"o}rg}, title = {Automatisierte Handhabung biegeschlaffer Materialien - Wo setzt die Ingenieursaufgabe an?}, series = {Wissenschaftliche Beitr{\"a}ge 2013}, volume = {17}, journal = {Wissenschaftliche Beitr{\"a}ge 2013}, issn = {0949-8214}, doi = {10.15771/0949-8214_2013_1_13}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-3050}, pages = {72 -- 76}, year = {2013}, abstract = {Das Greifen von biegeschlaffen Materialien z. B. Gummi, Textil, Schaumstoff, FVK-Matten erfolgt industriell heute immer noch zu einem großen Teil manuell. Technische Schwierigkeiten werden durch die biegeschlaffen Materialeigenschaften selber sowie den erh{\"o}hten Flexibilit{\"a}tsanforderungen aufgrund der Fertigung kleinster Losgr{\"o}ßen hervorgerufen. Automatisierungsbem{\"u}hungen scheitern bisher an flexiblen Greifsystemen zum Handhaben derartiger Bauteile.}, language = {de} } @misc{vonLipinskiReiffStephan2014, author = {von Lipinski, Ren{\´e} and Reiff-Stephan, J{\"o}rg}, title = {Nutzung regenerativer Energie als Tr{\"a}ger mechanischer Leistung in der Savannenregion Westafrikas}, series = {Wissenschaftliche Beitr{\"a}ge 2014}, volume = {18}, journal = {Wissenschaftliche Beitr{\"a}ge 2014}, issn = {0949-8214}, doi = {10.15771/0949-8214_2014_1_5}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-3320}, pages = {37 -- 43}, year = {2014}, abstract = {Ein Großteil des afrikanischen Kontinents ist noch immer von Armut betroffen. Im besonderen Maße ist dieser Zustand pr{\"a}gend f{\"u}r die westafrikanische Republik Togo. Kennzeichnend f{\"u}r die Region ist, dass sie {\"u}ber ein sehr schlecht ausgebautes Energienetz verf{\"u}gt. Dieses hindert die Entwicklungsbedingungen sowohl im wirtschaftlichen als auch bildungspolitischen Bereich. Um die Weiterentwicklung des Landes zu f{\"o}rdern, hat sich die Technische Hochschule Wildau zum Ziel gestellt, Projektarbeiten im Bereich der Nutzbarmachung regenerativer Energien zu unterst{\"u}tzen und so einen Beitrag zur „Hilfe durch Selbsthilfe" zu leisten. Im folgenden Artikel wird eine Analyse der Savannenregion hinsichtlich der klimatischen Bedingungen aufgezeigt. Die Analyseergebnisse dienen als Basis f{\"u}r die Ableitung m{\"o}glicher regenerativer Energietr{\"a}ger und Konzepte zu deren dezentraler Nutzung. Am Fallbeispiel einer Lehmsteinpresse wird gezeigt, inwieweit der f{\"u}r die Region optimale regenerative Energietr{\"a}ger sinnvoll in mechanische Leistung {\"u}berf{\"u}hrt werden kann. Eine Berechnungsgrundlage zur Auslegung entsprechender Leistungsbedarfe wird abgeleitet. Hiermit wird ein Beitrag zum nachhaltigen Verbessern der Lebensbedingungen in Westafrika geleistet.}, language = {de} } @misc{vonLipinskiRichterReiffStephan2015, author = {von Lipinski, Ren{\´e} and Richter, Markus and Reiff-Stephan, J{\"o}rg}, title = {Informationsgewinnung im cyberphysischen Produktionssystem}, series = {Wissenschaftliche Beitr{\"a}ge 2015}, volume = {19}, journal = {Wissenschaftliche Beitr{\"a}ge 2015}, issn = {0949-8214}, doi = {10.15771/0949-8214_2015_1_7}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-3574}, pages = {55 -- 60}, year = {2015}, abstract = {Im Fokus vieler industrieller Forschungsprojekte steht die intelligente Vernetzung von Entit{\"a}ten im produktionstechnischen Umfeld. Im Rahmenkonzept Industrie 4.0 wird zum Wandel bestehender hierarchischer Betriebsstrukturen in ein cyberphysisches Produktionssystem beigetragen. Priorit{\"a}t haben Untersuchungen sensorischer Komponenten und deren Verkettung als F{\"u}hrungselement im zuk{\"u}nftigen Produktionsumfeld, welches durch Selbstanalyse, Selbstorganisation und Selbstoptimierung gepr{\"a}gt sein wird. Ziel des Hochschulprojektes (iSensPK) ist die Abwandlung bestehender Sensorkonzepte und deren Nutzbarmachung f{\"u}r das Internet der Dinge. Einen Schwerpunkt wird dabei insbesondere die Definition und Verkn{\"u}pfung stabiler Kommunikationswege darstellen. Als Demonstrator erfolgt der Aufbau eines 6-Komponenten Kraftmesssystems zur Pr{\"u}fung und Kalibrierung moderner Greifertechnologien unter Feldbedingungen. Durch die umfangreiche Vernetzung verschiedener Sensoren erfolgt die Erfassung von St{\"o}rgr{\"o}ßen im Testumfeld. Das gewonnene Abbild der physischen Umgebung dient zur Korrektur der Kraftmessungsergebnisse. F{\"u}r die Realisierung eines derartigen Kraftmess- und Umfelderfassungssystems wird in den sensorisch relevanten Bereichen der Kommunikation, Sensordatenfusion, Multifunktionsintegration und Selbstorganisation nach L{\"o}sungsans{\"a}tzen gesucht.}, language = {de} } @article{ReinhardtMahdaviaslPrelletal.2024, author = {Reinhardt, Heiner and Mahdaviasl, Mahtab and Prell, Bastian and Mauersberger, Anton and Klimant, Philipp and Reiff-Stephan, J{\"o}rg and Ihlenfeldt, Steffen}, title = {Efficient data acquisition for traceability and analytics}, series = {Procedia CIRP}, volume = {122}, journal = {Procedia CIRP}, publisher = {Elsevier}, issn = {2212-8271}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-19232}, pages = {73 -- 78}, year = {2024}, abstract = {Implementing processes for traceability is required in various industries to assure product quality during manufacturing, provide evidence on required processing conditions or facilitate product recalls. Commonly, radio-frequency identification (RFID) or code recognition techniques (e.g. Data Matrix) are applied to track the flow of workpieces through a manufacturing system and link processing data accordingly. Although the analysis of tracking data is well-examined, we still see a gap in the research on the trade-off between data acquisition, data analytics and data quality. Here, we present a framework to increase the value of existing data by enabling data analytics while addressing common pitfalls and reducing the costs of data management.}, language = {en} } @inproceedings{GuentherPrellvandeSandetal.2024, author = {G{\"u}nther, Norman and Prell, Bastian and van de Sand, Ron and Reiff-Stephan, J{\"o}rg}, title = {Industrie 5.0 Lernumgebung am Beispiel der Wildauer Smart Production}, series = {Tagungsband AALE 2024}, booktitle = {Tagungsband AALE 2024}, editor = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and St{\"o}cker, Christian}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-18538}, pages = {365 -- 372}, year = {2024}, abstract = {Die Industrie 5.0 fordert neue Lernans{\"a}tze und zeitgleich auch passende Lernumgebungen. Parallel m{\"u}ssen diese neben den didaktischen Herausforderungen auch den Transfer- und {\"U}bertragungsgedanken auf die industriellen Anwendungen gerecht werden. Durch die t{\"a}glich steigende Anzahl vielf{\"a}ltiger KI-Tools insbesondere textgenerierenden Tools, braucht es Systeme mit einem breiten Anwendungsbereich. Im Rahmen des vorliegenden Beitrags geben die Autoren einen Einblick in die Wildauer Smart Production, welche den transdisziplin{\"a}ren Gedanken von Lern- und Transferumgebungen Rechnung tr{\"a}gt, M{\"o}glichkeiten der Gestaltung komplexer Produktionssysteme widerspiegelt, die Integration menschzentrierter Ans{\"a}tze erm{\"o}glicht und als Forschungsumgebung eingesetzt wird.}, language = {de} } @inproceedings{KupperFroehlichReiffStephan2024, author = {Kupper, Stefan and Fr{\"o}hlich, Stefan and Reiff-Stephan, J{\"o}rg}, title = {Ein neuer Sensoransatz f{\"u}r die Feinpositionierung eines O-Bus Stromabnehmers}, series = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: Praktische L{\"o}sungen f{\"u}r die industrielle Automation}, booktitle = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: Praktische L{\"o}sungen f{\"u}r die industrielle Automation}, editor = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and St{\"o}cker, Christian}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, isbn = {978-3-910103-02-3}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-18582}, pages = {359 -- 364}, year = {2024}, abstract = {Urbane Mobilit{\"a}t insbesondere der innerst{\"a}dtischen Personentransport wird auch zuk{\"u}nftig ein besonderes Augenmerk unter dem Eindruck nachhaltiger Nutzung von Energiesystemen haben. Hierbei besitzt der {\"o}ffentliche Personennahverkehr({\"O}PNV) ein großes Potential zur großskaligen Minderung des Kohlendioxid ausstoßes. Ein sehr wichtiges Konzept hierbei ist der Oberleitungsbus der ganz analog zu einer Straßenbahn {\"u}ber eine Oberleitung fahrbahnbegleitend mit Strom versorgt wird. Da der Bus naturgem{\"a}ß nicht schienengebunden f{\"a}hrt und somit ein gewisses Maß an Positionsungenauigkeit besitzt, ist das Eindrahten an die Oberleitung allerdings erschwert. In dieser Arbeit pr{\"a}sentieren wir einen Regelungsansatz basierend auf einer neuartigen Sensorkonfiguration, der das automatische Eindrahten eines Stromabnehmers auf einem Bus erm{\"o}glichen kann.}, language = {de} } @article{PrellReinhardtMauersbergeretal.2023, author = {Prell, Bastian and Reinhardt, Heiner and Mauersberger, Anton and Rauscher, Alexander and Reiff-Stephan, J{\"o}rg and Ihlenfeldt, Steffen}, title = {A survey on sustainability approaches in manufacturing}, series = {Procedia CIRP}, volume = {116}, journal = {Procedia CIRP}, publisher = {Elsevier}, issn = {2212-8271}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-17527}, pages = {101 -- 106}, year = {2023}, abstract = {Awareness about climate change has led to policies and regulations but also customer preferences favoring sustainable production. Thus, producing businesses are confronted by this, as they consume a large share of resources. Therefore, when producing, additional dimensions beyond commercial feasibility ought to be considered. Here, literature on sustainability from the field of engineering science is systematically searched and analyzed for approaches leading to actual recommendations for action. Hence, this bottom-up approach, incorporating the production engineers' point of view, represents an inside view of how the topic of sustainability has arrived at production companies. The focus on commercial feasibility ensures high relevance to practice, as production needs to become both sustainable and competitive. Even though exemplary collections of different approaches addressing the topic of sustainability in production can be found in literature, novelty is provided by the structured manner literature was collected and the special focus on approaches leading to practice-relevant recommendations for action. Thus, a comprehensive overview of approaches applicable to the manufacturing domain is presented.}, language = {en} } @article{FalkElGhayedvandeSandetal.2023, author = {Falk, Constantin and El Ghayed, Tarek and van de Sand, Ron and Reiff-Stephan, J{\"o}rg}, title = {A Data-Driven Approach Towards the Application of Reinforcement Learning Based HVAC Control}, series = {Journal of the Nigerian Society of Physical Sciences}, volume = {5}, journal = {Journal of the Nigerian Society of Physical Sciences}, number = {1}, publisher = {Department of Physics, Federal University Lafia Nasarawa State, Nigeria ; Nigerian Society of Physical Sciences}, issn = {2714-4704}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-17066}, year = {2023}, abstract = {Refrigeration applications consume a significant share of total electricity demand, with a high indirect impact on global warming through greenhouse gas emissions. Modern technology can help reduce the high power consumption and optimize the cooling control. This paper presents a case study of machine-learning for controlling a commercial refrigeration system. In particular, an approach to reinforcement learning is implemented, trained and validated utilizing a model of a real chiller plant. The reinforcement-learning controller learns to operate the plant based on its interactions with the modeled environment. The validation demonstrates the functionality of the approach, saving around 7\% of the energy demand of the reference control. Limitations of the approach were identified in the discretization of the real environment and further model-based simplifications and should be addressed in future research.}, language = {en} } @misc{vonLipinskiBusseReiffStephan2016, author = {von Lipinski, Ren{\´e} and Buße, Dirk and Reiff-Stephan, J{\"o}rg}, title = {Vergleich von Implementierungsm{\"o}glichkeiten industrieller Energiemonitoringsysteme f{\"u}r KMU}, series = {Wissenschaftliche Beitr{\"a}ge 2016}, volume = {20}, journal = {Wissenschaftliche Beitr{\"a}ge 2016}, issn = {0949-8214}, doi = {10.15771/0949-8214_2016_1_8}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-5352}, pages = {59 -- 65}, year = {2016}, abstract = {Um den Herausforderungen zuk{\"u}nftiger Wertsch{\"o}pfungsnetzwerke gewachsen zu sein, sind produzierende Unternehmen im verst{\"a}rkten Maße auf die Erfassung energetischer Daten angewiesen. Somit gewinnen industrielle Energiemonitoringsysteme zunehmend an Bedeutung. Bei der Erweiterung bestehender Strukturen um die Funktionalit{\"a}t des Energiemonitorings k{\"o}nnen verschieden konzeptionelle Ans{\"a}tze verfolgt werden. Diese werden in der vorliegenden Arbeit aufgezeigt und anhand exemplarischer Versuchsaufbauten nutzwertanalytisch verglichen. Es ist festzustellen, dass die Auswahl eines geeigneten Systems f{\"u}r jeden Anwendungsfall individuell zu betrachten ist. Nur unter Ber{\"u}cksichtigung der technischen sowie menschlichen Entit{\"a}ten innerhalb eines Unternehmens und genauer Definition der Spezifikationen kann aus der breiten Auswahl marktverf{\"u}gbarer Systeme die jeweils geeignetste L{\"o}sung ausgew{\"a}hlt werden.}, language = {de} } @inproceedings{DietrichvandeSandReiffStephan2021, author = {Dietrich, Alexander and van de Sand, Ron and Reiff-Stephan, J{\"o}rg}, title = {Implementation of a Machine Tool Retrofit System}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-15004}, pages = {239 -- 247}, year = {2021}, abstract = {Small and medium-sized companies increasingly turning their attention towards the fourth industrial revolution. In order to increase their own long-term competitiveness, there is a growing desire to make production smarter, more efficient, safer and more sustainable through new technologies. Often, however, existing plants cannot be easily replaced by modern equipment. The reasons for this can be high investment costs, excessive downtimes or the unavailability of an equivalent machine. An alternative solution to the purchase of new equipment is the modernisation or expansion of existing systems, also called retrofitting. Thus, this paper deals with the retrofit process of a machine tool, whereby the software architecture of the control unit is the primary concern of this work.}, language = {en} } @inproceedings{GieseReiffStephan2021, author = {Giese, Lutz B. and Reiff-Stephan, J{\"o}rg}, title = {Hydrogen and Usability of Hydrogen Storage Technologies}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14937}, pages = {97 -- 106}, year = {2021}, abstract = {Science, technology and politics agree: hydrogen will be the energy carrier of the future. It will replace fossil fuels based on a sufficient supply from sustainable energy. Since the possibilities of storing and transporting hydrogen play a decisive role here, the so-called LOHC (Liquid Organic Hydrogen Carriers) can be used as carrier materials. LOHC carrier materials can reversibly absorb hydrogen, store it without loss and release it again when needed. Since little or no pressure is required, normal containers or tanks can be used. The volume or mass-related energy densities can reach around a quarter of liquid fossil fuels. This paper is to give an introduction to the field of hydrogen storage and usage of those LOHC, in particular. The developments of the last ten years have been related to the storage and transport of hydrogen with LOHC. These are crucial to meet the future demand for energy carriers e.g. for mobile applications. For this purpose, all transport systems are under consideration as well as the decentralized supply of rural areas with low technological penetration, e.g. regions of Western Africa which are often characterized by a lack of energy supply. Hydrogen bound in LOHC can provide a hazard-free alternative for distribution. The paper provides an overview of the conversion forms as well as the chemical carrier materials. Dibenzyltoluene as well as N-ethylcarbazole - as examples for LOHC - are discussed as well as chemical hydrogen storage materials like ammonia boranes as alternatives to LOHC.}, language = {en} } @inproceedings{vandeSandCorasanitiReiffStephan2021, author = {van de Sand, Ron and Corasaniti, Sandra and Reiff-Stephan, J{\"o}rg}, title = {Positive-Unlabelled Learning based Novelty Detection for Industrial Chillers}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, volume = {1}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14965}, pages = {155 -- 164}, year = {2021}, abstract = {Chiller systems are used in many different applications in both the industrial and the commercial sector. They are considered major energy consumers and thus contribute a non-negligible factor to environmental pollution as well as to the overall operating cost. In addition, chillers, especially in industrial applications, are often associated with high reliability requirements, as unplanned system downtimes are usually costly. As many studies over the past decades have shown, the presence of faults can lead to significant performance degradation and thus higher energy consumption of these systems. Thus, data-driven fault detection plays an ever-increasing role in terms of energy efficient control strategies. However, labelled data to train associated algorithms are often only available to a limited extent, which consequently inhibits the broad application of such technologies. Therefore, this paper presents an approach that exploits only a small amount of labelled and large amounts of unlabelled data in the training phase in order to detect fault related anomalies. For this, the model utilizes the residual space of the data transformed through principal component analyses in conjunction with a biased support vector machine, which can be ascribed to the concept of semi-supervised learning, or more specifically, positive-unlabelled learning.}, language = {en} } @inproceedings{FalkvandeSandCorasanitietal.2021, author = {Falk, Constantin and van de Sand, Ron and Corasaniti, Sandra and Reiff-Stephan, J{\"o}rg}, title = {A Comparison Study of Data-Driven Anomaly Detection Approaches for Industrial Chillers}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14970}, pages = {165 -- 174}, year = {2021}, abstract = {Faults in industrial chiller systems can lead to higher energy consumption, increasing wear of system components and shorten equipment life. While they gradually cause anomalous system operating conditions, modern automatic fault detection models aim to detect them at low severity by using real-time sensor data. Many scientific contributions addressed this topic in the past and presented data-driven approaches to detect faulty system states. Although many promising results were presented to date, there is lack of suitable comparison studies that show the effectiveness of the proposed models by use of data stemming from different chiller systems. Therefore this study aims at detecting a suitable data-driven approach to detect faults reliable in different domains of industrial chillers. Thus, a unified procedure is developed, to train all algorithms in an identical way with same data-basis. Since most of the reviewed papers used only one dataset for training and testing, the selected approaches are trained and validated on two different datasets from real refrigeration systems. The data-driven approaches are evaluated based on their accuracy and true negative rate, from which the most suitable approach is derived as a conclusion.}, language = {en} } @unpublished{vandeSandSchulzRitzmannetal.2018, author = {van de Sand, Ron and Schulz, Sebastian and Ritzmann, Kay and Reiff-Stephan, J{\"o}rg}, title = {Vernetzung von physischen und virtuellen Entit{\"a}ten im cyberphysischen Produktionssystem}, series = {atp magazin}, volume = {9}, journal = {atp magazin}, issn = {2190-4111}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-10611}, year = {2018}, abstract = {Konventionelle Fertigungsstrategien werden k{\"u}nftig zunehmend durch komplexe cyberphysische Produktionssysteme (CPPS) ersetzt. Es entstehen durchgehend verbundene Wertsch{\"o}pfungsnetzwerke mit großer Informationsdichte, die den Menschen mit einer signifikant gestiegenen Datenmenge konfrontieren, auf deren Basis er agieren muss. Daher nimmt die Mensch-Maschine-Schnittstelle einen wichtigen Stellenwert innerhalb des Produktionsprozesses ein, wobei sich neuartige Visualisierungsverfahren wie Augmented Reality (AR) vielversprechend zeigen. F{\"u}r entsprechende Anwendungen bedarf es einer durchg{\"a}ngigen Kommunikation aus dem Feld bis hin zur Applikation. Der Artikel beschreibt, wie existierende Kommunikationsstandards daf{\"u}r nutzbar gemacht werden k{\"o}nnen und zeigt eine beispielhafte Umsetzung. Zudem wird eine Kommunikationsarchitektur vorgeschlagen, die auf Grundlage der Verwaltungsschale den interoperablen Informationsaustausch zwischen physischen und virtuellen Entit{\"a}ten erm{\"o}glicht.}, language = {de} } @misc{ReiffStephan2017, author = {Reiff-Stephan, J{\"o}rg}, title = {Virtuelle Steuerung eines verteilten Energiemanagements}, series = {Wissenschaftliche Beitr{\"a}ge 2017}, volume = {21}, journal = {Wissenschaftliche Beitr{\"a}ge 2017}, issn = {0949-8214}, doi = {10.15771/0949-8214_2017_10}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-9454}, pages = {77 -- 81}, year = {2017}, abstract = {Energiemanagementaufgaben finden zunehmende Ber{\"u}cksichtigung f{\"u}r einen effizienten Betrieb von Produktionsanlagen. Kostenreduktion bei hoher Prozessstabilit{\"a}t ist hierbei eine wesentliche Aufgabenstellung zur Aufrechterhaltung der Wettbewerbsf{\"a}higkeit sowie zur Erf{\"u}llung von normativen wie auch gesetzlichen Rahmenbedingungen. Der vorliegende Beitrag zielt auf die Vorstellung eines Ansatzes zur Implementierung eines derartigen Managementsystems am Beispiel einer Thermoprozessanlage. Hierzu wird insbesondere das als Jidōka aus dem TPS bekannte Prinzip mit selbstadaptierender Grenzwertsetzung aufgenommen und eine Ausf{\"u}hrungsm{\"o}glichkeit prototypisch vorgestellt.}, language = {de} } @inproceedings{GuentherPrellReiffStephan2022, author = {G{\"u}nther, Norman and Prell, Bastian and Reiff-Stephan, J{\"o}rg}, title = {Industrie 5.0 : von der Vision des menschzentrierten Ansatzes zu soziocyberphysischen Produktionssystemen f{\"u}r die Praxis}, series = {Tagungsband AALE 2022}, booktitle = {Tagungsband AALE 2022}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-15787}, pages = {257 -- 266}, year = {2022}, abstract = {Industrie 4.0 Ans{\"a}tze haben sich in der fertigenden Industrie vielerorts etabliert. Big Data, IIoT und K{\"u}nstliche Intelligenz (KI) erm{\"o}glichen neue Gesch{\"a}ftsmodelle und wirken sich dadurch auch ver{\"a}ndernd auf Produktionssysteme aus. Mit dem Begriff der Industrie 5.0 formuliert sich ein menschzentrierter Ansatz. Die Praxisrelevanz dieser und {\"a}hnlicher Innovationen h{\"a}ngt maßgeblich davon ab, wie derartige Einsatzm{\"o}glichkeiten neuer, digitaler Technologien in die bestehenden Unternehmensstrukturen Einzug halten. Hierbei kommt es also auf Transfer und Akzeptanz neuer Technologien an. Digitalisierung gestaltet sich somit als sozio-technisches Problem. Dieser Beitrag gibt Einblick in aktuell verfolgte Transferans{\"a}tze f{\"u}r Digitalisierung im Mittelstand und leistet einen Teil zu Theoriebildung, als dass er auch einen Ausblick auf weitere Aktivit{\"a}ten in dem Umfeld liefert.}, language = {de} } @inproceedings{PrellGuentherReiffStephan2021, author = {Prell, Bastian and G{\"u}nther, Norman and Reiff-Stephan, J{\"o}rg}, title = {Cyber-Physical Production Systems in Settings with Limited Infrastructure}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14993}, pages = {229 -- 238}, year = {2021}, abstract = {During the last decade production innovation was mainly focused on connectivity aspects. The vision of smart factories running on software, that uses collected machine data, has become true but foremost for leading industrial companies in highly developed countries. Apart from these, production can also be found in non-industrialized craft professions as well as in less developed countries. As digitalization does not necessarily require an industrial or developed setting the latter could possibly benefit from it as well. Socio-cyber-physical production systems have been used to describe the interdependencies of linked production systems but usually focus on highly developed regions as well as for industrial applications. This paper lines out similarities and differences for each case, introduces the concept of cyber-physical production systems (CPPS) and its extension to socio-CPPS (SCPPS), which emphasizes the role of human workers in the production environment. The relation between industrial, non-industrial production and innovations is examined. Furthermore, the widening of SCCPS concepts for non-industrial production is discussed.}, language = {en} }