62 Ingenieurwissenschaften
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Wachsende Informationssysteme (IS) gehen oft einher mit einer wachsenden IT-Komplexität, weil sich heterogene IT-Landschaften über Jahre hinweg zu einem Flickenteppich entwickeln. Diese Entwicklung bringt steigende IT-Kosten und Abhängigkeiten mit sich, die die Wartung und Entwicklung der IT-Landschaften behindern. Der Artikel beleuchtet die aktuelle Literatur über Methoden zum Management von IT-Komplexität mit der Methodik eines Literaturreviews. Da die Definitionen von IT-Komplexität in der Literatur weit auseinandergehen, wird eine Herleitung und eine Definition aufgestellt. Außerdem werden die Ergebnisse des Literatur-Suchprozesses vorgestellt. Danach folgt eine Diskussion und Synthese der Literatur sowie ein Ausblick auf weitere Forschungsfelder.
Bedingt durch den Ausbau der dezentralen Energieversorgung steigen die Redispatch-Maßnahmen durch die Übertragungsnetzbetreiber zur Netzstabilisierung. Je nach Szenario werden in 2030 allerdings 62 - 82 % der Bruttostromnachfrage direkt in das Verteilnetz eingespeist, sodass die Verteilnetzbetreiber die Netzbilanz bereits auf NS- und MS-Ebene ausgleichen müssen. Eine Lösungskomponente dazu ist das Industrial Smart Grid; dazu sind tiefere Einblicke in die Produktionsplanung von Industrieunternehmen nötig, um das Netz proaktiv zu regeln. Die Grundlage für diese nötige Transparenz wird unternehmensintern durch die Etablierung von Energiemanagement und dazu nötigen Energieinformationssystemen geschaffen. Um eine zielgerichtete Systemauswahl für produzierende Unternehmen zu ermöglichen, ist ein grundlegender Funktionskatalog eines Energieinformationssystems zu erstellen. Dieses Paper beschreibt die Erstellung eines solchen Funktionskatalogs in Form eines übersichtlichen Funktionsbaums und einer exemplarischen Funktionsdarstellung in einem Use-Case-Diagramm.
Im Strommarkt 2.0 wird ein Paradigmenwechsel von einer verbrauchsorientierten Erzeugung zu einem erzeugungsorientierten Verbrauch durchlaufen. Dies erfordert in Zukunft ein gesteigertes Angebot von Flexibilität. Die Idee und die für das Energiesystem dienlichen Potentiale eines Flexibilitätsmarktes für die Industrie sind bekannt, dennoch werden diese Möglichkeiten zurzeit nur eingeschränkt genutzt. Es stellt sich somit die Frage, durch welche Anreize und Dienstleistungen es gelingen kann, Unternehmen zur Bereitstellung von Flexibilität zu motivieren. Hierfür werden im vorliegenden Paper die bestehenden Energiedienstleistungen und neue Flexibilitätsdienstleistungen strukturiert beschrieben und Potenziale herausgestellt.
Failure management in the production area has been intensely analyzed in the research community. Although several efficient methods have been developed and partially successfully implemented, producing companies still face a lot of challenges. The resulting main question is how manufacturers can be assisted by a sustainable approach enabling them to proactively detect and prevent failures before they occur. A high-resolution production system based on analyzed real-time data enables manufacturers to find an answer to the main question. In this context, Big Data technologies have gained importance since the critical success factor is not only to collect real-time data in the production but also to structure the data. Therefore, we present in this paper the implementation of Big Data technologies in the production area using the example of an actual research project. After the literature review, we describe a Big Data based approach to prevent failures in the production area. This approach mainly includes a real-time capable platform including complex event processing algorithms to define appropriate improvement measures.
Thanks to the challenges of the imminent energy turnaround, the power market faces a revolution regarding the energy distribution. In future, energy will not only be distributed from a limited number of large, centralized power plants but also from small, decentralized power generators, e.g. households. This also affects manufacturing companies, which are confronted with developing an energy management strategy. As those companies usually have not set high priorities on their energy management, there is a lack of a structured procedure to build an energy management strategy. Consequently, this creates the need for supporting methods to develop and implement an energy management strategy. This paper tackles the first step in the development of an energy management strategy. For this purpose, a target map is developed and possible use cases are systematized. The next steps of the implementation are presented using the example of load management.
Outsourcing of logistics operations (especially transportation, distribution & warehousing) is one of the most viable options exercised by the customers to excel in their logistic operations. Despite the growing outsourcing of logistics services to 3PL providers, both the service providers & their customers are facing tremendous problems in synchronizing the business processes & analyzing the performance using common key performance indicators. There is a huge demand for an integrated approach to help 3PL and their customers better synchronize their business processes and have common goals & perspectives. Such integrated approaches often take shape of a process oriented reference model covering many diverse aspects related to the operations & controlling of any business. In this paper, an integrated reference model to support 3PL service operations is presented. The Logistics Reference Model (LRM) developed & validated in some 3PL service companies encompasses standard business processes, performance measurement system and best practices.
Electricity generated by wind turbines (WT) is a mainstay of the transition to renewable energy. In order to economically utilize WT is, operating and maintenance costs, which account for 25% of total electricity generation costs in onshore WT’s, are a focus of cost reduction activities. Implementing a data-driven prescriptive maintenance approach is one way to achieve this. So far, various approaches for prescriptive maintenance for onshore WT’s have been suggested.
However, little research has addressed the practical implementation considering sociotechnical aspects. The aim of this paper is therefore to identify success factors for the successful implementation of such a maintenance strategy with clear and holistic guidance on how existing knowledge on prescriptive maintenance from science can be transferred to business practice. These recommendations are developed through case study research and classified in the four structural areas of Acatech’s Industry 4.0 Maturity Index: Resources, Information Systems, Organizational Structure and Culture.
Personal user data is collected and processed at large scale by a handful of big providers of Internet services. This is detrimental to users, who often do not understand the privacy implications of this data collection, as well as to small parties interested in gaining insights from this data pool, e.g., research groups or small and middle-sized enterprises. To remedy this situation, we propose a transparent and user-controlled data market in which users can directly and consensually share their personal data with interested parties for monetary compensation. We define a simple model for such an ecosystem and identify pressing challenges arising within this model with respect to the user and data processor demands, legal obligations, and technological limits. We propose myneData as a conceptual architecture for a trusted online platform to overcome these challenges. Our work provides an initial investigation of the resulting myneData ecosystem as a foundation to subsequently realize our envisioned data market via the myneData platform.
The Aim of this article is to provide a framework which enhances the existing scope of manufacturing asset management by specifically addressing industrial services provided by external suppliers as an integral part of today’s manufacturing structures. Existing research shows that sourcing industrial services from specialized service organizations establishes complex and unique interdependencies and links total production efficiency to the performance of the external service suppliers. Within the context of the EU-Project InCoCo-S - “Innovation, Coordination and Collaboration in Service Driven Manufacturing Supply Chains” a standard business reference model with key focus on operation and integration of business related services (BRS) in the supply chain has been developed. Based on the service type retrofit this paper aims on the one hand to present the modules of the reference model and on the other hand to explain how the model can be used to enhance the retrofit business.
In most European countries a structural change from a production dominated towards a service oriented society is progressing. Companies increasingly consider services as means to gain competitive advantages in a global competition. In order to provide holistic, value-adding solutions while simultaneously guaranteeing high quality standards, production companies increasingly join forces with external services‘ providers. Models, methods and tools for service development are rare and in most cases immature. In the context of virtual services‘ development this leads to a dual set of simultaneous chal-lenges: an alignment of systematic services‘ and product development and the coordination of distributed R&D partners. The objective is to provide a meta-process that identifies all steps and decision points necessary to successfully develop innovative services. It is a result of combined service development and virtual enterprises‘/ networks‘ research.
Industrial Service Providers (ISP) are exposed to constantly raising competitive pressures regarding both cost and performance aspects. The massive challenges caused by the current worldwide financial and economic crisis even intensified the need for process optimizations aimed at increasing the productivity of service production. To reach this goal the evaluation and elimination of waste in their production processes becomes a crucial ability for ISPs. This paper proposes a new approach for increasing productivity in service production processes using a generic measurement model for the detection and evaluation of waste. The model is based on established lean management principles, but tailored to the specifics of ISPs by adopting a customers’ perspective to track down and eliminate waste. The evaluation builds on an in-depth-analysis of particular types of waste in the industrial service production processes. Viewed from the customers’ perspective and taking into account the specific characteristics of services (e.g. intangibility, heterogeneity, inseparability, and perishability) and service production (e.g. volatile demand, a tendency to over-capacity, and limits to planning) the approach employs a service blueprint reference model to then determine the different types of waste in the various parts of the service production process.
One of the major tasks of operations managers is to boost uptime while simultaneously keeping budget. To meet this challenge they discover reliability-based management as strategic factor to improve performance. But which parameters are the key to “reliability excellence” and drive a company’s performance? What are the relevant levers to pull in reliability-based management?
To answer these questions McKinsey & Company partnered with Aachen University to launch a global reliability survey in process industries. Objective of the initiative is to provide a statistically proven picture of key factors that drive maintenance and reliability excellence. Furthermore benchmarks and best practices concerning overall operational performance will be identified. The study is based on a questionnaire-based approach which addresses all relevant departments within a company, complemented by best practice analyses.
This paper provides results of the survey. The results demonstrate that reliability pays off. Some unproven beliefs have been confirmed (e.g. a good reliability performance results in a low spare part inventory) but also surprises like a correlation between safety and performance were identified. The analysis also shows that structural differences like company size or geography do not influence reliability performance.
In diesem Beitrag werden die Ergebnisse aus einer Studie in der Papierindustrie vorgestellt. Dabei zeigt sich eine deutliche Korrelation zwischen guten Ergebnissen in der Effektivität und Effizienz des Zuverlässigkeitsmanagements und dem Unternehmenserfolg. Der Unternehmenserfolg – im Sinne einer hohen Umsatzrendite – kann zwar nicht allein auf einen entscheidenden Einflussfaktor zurückgeführt werden, da der Umsatz durch eine Vielzahl von Faktoren bestimmt wird. Die durchgeführten Analysen und Interviews innerhalb der Studie deuten allerdings darauf hin, dass in der Tat das operative Anlagenmanagement einen maßgeblichen Erfolgsfaktor darstellt, sich „Reliability“ in der Prozessindustrie folglich auszahlt. Überdies konnte gezeigt werden, wie sich Methoden und Verhaltensweisen von Instandhaltung und Produktion auf die Zuverlässigkeit von Anlagen und die Effizienz deren Bewirtschaftung auswirken.
In diesem Beitrag werden die aktuellen Aktivitäten im Forschungsprojekt „SiZu – Integration von Echtzeitsimulation und Zustandsüberwachung zur Bauteilprognose und Fehleranalyse für die Instandhaltung“ vorgestellt. Ziel des Projektes ist es, die bislang separat genutzten Funktionalitäten Condition-Monitoring und Echtzeitsimulationen in einem Analysewerkzeug (Condition- Analyser) für die Instandhaltung zusammenzuführen und damit Zustandsüberwachungssysteme um die Möglichkeit der Nutzung historischer Anlagendaten und Echtzeitsimulation zu erweitern. Neben der detaillierten Beschreibung der angestrebten Forschungsergebnisse und den daraus resultierenden Nutzungspotentialen für die Instandhaltung wird die zur Zielerreichung entwickelte Vorgehensweise vorgestellt und diskutiert.
Due to shorter product life cycles the number of production ramp-ups is increasing, while customers have a soaring demand for more variable and individualized products. In the future, optimizing the production ramp-up will become an important differentiation criterion for companies. Considering the whole supply chain in the ramp-up process becomes therefore indispensable. This is what the presented research in this paper concentrates on. The intention of the research project is to develop a model of a supply chain in the production ramp-up stage. Through this model, approaches for optimizing the production ramp-up in the whole supply chain will be derived.
Further the research project concentrates on measuring the production ramp-up performance in the supply chain, showing the impact on economic and financial measures. The result of this research is an approach to align the tasks and objectives of Supply Chain Management with the tasks and objectives of ramp-up management in order to optimize the whole supply chain in the ramp-up stage.
The House of Maintenance
(2009)
In order to guarantee an efficient and effective employment of production equipment, it is essential to identify any possible potential for improving performance, not only in the production process, but also in supporting areas such as maintenance. One of the major tasks in increasing maintenance performance consists of systematically identifying the company’s most significant weaknesses in maintenance organisation and thus being able to implement improvements there where they are most needed.
But how is a company to tackle this important task? To answer this question, this paper describes an assessment and improvement approach, based on a capability maturity model (CMM). By means of this approach, the status-quo of a maintenance organisation can be analysed and its individual improvement opportunities identified.
Rebound Logistics
(2009)
Today, the flow of product returns is becoming a significant concern for many manufacturing companies. In this research area, three fundamental aspects of product returns need to be taken into consideration: First, companies become increasingly aware of the fact that product returns may offer an opportunity for enormous profit generation and for improving the competitive advantage of a manufacturing company when taking into account the accretive value of the products and technology. Second, the impact of green laws, legislative provisions and the increasing impact of a sustainable production management due to marketing aspects force companies to design and manage the reverse supply chain actively. Third, the importance of managing the reverse supply chains effectively will be enforced by the currently volatile economic climate. This paper outlines first results of designing a methodological framework for implementing an integrative reverse supply chain for manufacturing companies based on a type-specific Reverse Supply Chain Reference Model.
In the near future, tooling companies will offer their customers not just maintenance services, but complex remote service packages for their engineering asset management, which is the total management of physical – not financial – assets. The overall goal is to enhance the efficiency of the engineering asset, e.g. to reduce TCO, on the customers´ site by means of value creating partnerships. These partnerships may be, e.g. the classical output or reliability partnership, but also process optimizing partnerships or lifecycle partnerships. The process optimizing partnership offers, e.g. the optimization of the system’s performance or the output quality, an optimized ramp-up and restart procedure or optimization of the production process parameters. The lifecycle partnership, on the other hand, accompanies the intelligent tool-machine-system throughout the whole lifecycle, which includes, e.g. provision of spare parts during the entire usage phase, storing, refurbishment, recycling and even the support of relocation of production facilities. Intelligent remote services have great potential for realizing all these partnerships.
To realize such engineering asset-related partnerships, two major tasks have to be done. First, there has to be the intelligent tool-machine system, which delivers the information that is required for these services. And furthermore, this information has to be integrated into the maintenance processes, so that it is delivered at the right place and time and in the required form. Second, the activities and processes that are combined to the engineering asset-related partnerships have to be configured out of standardized service and process modules. Therefore configuration logic is essential.
Industrial companies face tremendous challenges to plan the resources needed to meet future market demands when implementing a PSS based solution portfolio. This paper deals with enhancing the PSS research landscape by presenting an approach to enable better resource-planning in PSS based businesses. In particular, a model is proposed which links resource structures with customer offerings. Linkages are implemented, which connect resources and their use in processes. The model contributes to better understand the complexity in resource structures and elements in the PSS and helps to better understand and describe the structural integration of resources in PSS. This is an important prerequisite for the planning of PSS and allows a qualitative and quantitative description of the service resources allocation enabling companies to build the competence needed to meet customer requirements. A case study based approach was applied for model development.