3 research outputs found

    Multi-agent Manufacturing Execution System (MES):Concept, architecture & ML algorithm for a smart factory case

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    Smart factory of the future is expected to support interoperability on the shop floor, where information systems are pivotal in enabling interconnectivity between its physical assets. In this era of digital transformation, manufacturing execution system (MES) is emerging as a critical software tool to support production planning and control while accessing the shop floor data. However, application of MES as an enterprise information system still lacks the decision support capabilities on the shop floor. As an attempt to design intelligent MES, this paper demonstrates one of the artificial intelligence (AI) applications in the manufacturing domain by presenting a decision support mechanism for MES aimed at production coordination. Machine learning (ML) was used to develop an anomaly detection algorithm for multi-agent based MES to facilitate autonomous production execution and process optimization (in this paper switching the machine off after anomaly detection on the production line). Thus, MES executes the ‘turning off’ of the machine without human intervention. The contribution of the paper includes a concept of next-generation MES that has embedded AI, i.e., a MES system architecture combined with machine learning (ML) technique for multi-agent MES. Future research directions are also put forward in this position paper

    Model-based condition and process monitoring based on socio-cyber-physical systems

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    Die produzierende Industrie strebt im Rahmen der vierten industriellen Revolution, Industrie 4.0, die Optimierung der klassischen ZielgrĂ¶ĂŸen QualitĂ€t, Kosten und Zeit sowie Ressourceneffizienz, FlexibilitĂ€t, WandlungsfĂ€higkeit und Resilienz in globalen, volatilen MĂ€rkten an. Im Mittelpunkt steht die Entwicklung von Smart Factories, in denen sich relevante Objekte, Produktions-, Logistik- und Informationssysteme sowie der Mensch vernetzen. Cyber-physische Systeme (CPS) tragen als sensorisierte und aktorisierte, resiliente und intelligente Gesamtsysteme dazu bei, Produktionsprozesse und -maschinen sowie die ProduktqualitĂ€t zu kontrollieren. VordergrĂŒndig wird die technische KomplexitĂ€t von Produktionssystemen und damit auch zugehöriger Instandhaltungsprozesse durch die Anforderungen an deren WandlungsfĂ€higkeit und den zunehmenden Automatisierungsgrad ansteigen. Heraus-forderungen bei der Entwicklung und Implementierung von CPS liegen in fehlenden InteroperabilitĂ€ts- und Referenzarchitekturkonzepten sowie der unzureichend definierten Interaktion von Mensch und CPS begrĂŒndet. Sozio-cyber-physische Systeme (Sozio-CPS) fokussieren die bidirektionale Interaktion von Mensch und CPS und adressieren diese Problemstellung. Gegenstand und Zielstellung dieser Dissertationsschrift ist die Definition von Sozio-CPS in der DomĂ€ne der Zustands- und ProzessĂŒberwachung von Smart Factories. Untersucht werden dabei Nutzungsszenarien von Sozio-CPS, die ganzheitliche Formulierung von Systemarchitekturen sowie die Validierung der entwickelten LösungsansĂ€tze in industriellen Anwendungsszenarien. Eine erfolgreiche Umsetzung von Sozio-CPS in drei heterogenen Validierungsszenarien beweist die Korrektheit und Anwendbarkeit der LösungsansĂ€tze.Within the scope of the fourth industrial revolution, Industry 4.0, the manufacturing industry is trying to optimize the traditional target figures of quality, costs and time as well as resource efficiency, flexibility, adaptability and resilience in volatile global markets. The focus is on the development of smart factories, in which relevant objects and humans are interconnected . Cyber-physical systems (CPS) are used as sensorized and actuatorized, resilient and intelligent overall systems to control production processes, machines and product quality . The technical complexity of production systems and their associated maintenance processes are rising due to the demands on their adaptability and the increasing automation. Challenges in the development and implementation of CPS include the lack of interoperability and reference architecture concepts as well as the insufficiently defined interaction of people and CPS. Socio-cyber-physical systems (Socio-CPS) focus on bidirectional interaction of humans and CPS to address this problem. The scope and objective of this dissertation is to define Socio-CPS in the condition and process monitoring of smart factories. This dissertation utilizes scenarios of Socio-CPS, holistically defines system architectures and validates the solutions developed in industrial applications. The successful implementation of Socio-CPS in three heterogeneous validation scenarios proves the correctness and applicability of the solutions

    Identifying behavior models for process plants

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