@article{DonhauserBaierEbersbachetal.2018, author = {Donhauser, Toni and Baier, Lukas and Ebersbach, Tobias and Franke, J{\"o}rg and Schuderer, Peter}, title = {Simulationsbasierte Optimierung von Fabrikabl{\"a}ufen}, volume = {108}, journal = {wt Werkstattstechnik online}, subtitle = {Implementierung und Test eines Algorithmus zur ereignisbasierten Regelung der Materialfl{\"u}sse}, number = {4}, publisher = {VDI Fachmedien}, address = {D{\"u}sseldorf}, issn = {1436-4980}, doi = {https://doi.org/10.37544/1436-4980-2018-04-27}, pages = {221 -- 227}, year = {2018}, language = {de} } @article{DonhauserEndterSchmidtetal.2020, author = {Donhauser, Toni and Endter, Udo and Schmidt, Torben and Franke, J{\"o}rg and Baier, Lukas and Schuderer, Peter}, title = {Echtzeitabbild der Produktion}, volume = {110}, journal = {wt Werkstattstechnik online}, subtitle = {Betriebsbegleitende Materialflusssimulation}, number = {4}, publisher = {VDI Fachmedien}, address = {D{\"u}sseldorf}, issn = {1436-4980}, doi = {https://doi.org/10.37544/1436-4980-2020-04}, pages = {214 -- 219}, year = {2020}, language = {de} } @article{BaierDonhauserSchudereretal.2017, author = {Baier, Lukas and Donhauser, Toni and Schuderer, Peter and Franke, J{\"o}rg}, title = {Heuristical Solution for Scheduling Single Stage Parallel Machines Production of Calcium Silicate Masonry Units with Sequence-Dependent Changeover Times to Improve Energy Efficiency}, volume = {871}, journal = {Applied Mechanics and Materials}, publisher = {Trans Tech Publications}, address = {Baech}, issn = {1662-7482}, doi = {https://doi.org/10.4028/www.scientific.net/AMM.871.208}, pages = {208 -- 219}, year = {2017}, language = {en} } @article{BaierSpindlerWackeretal.2018, author = {Baier, Lukas and Spindler, Simon and Wacker, Manuel and Schuderer, Peter and Franke, J{\"o}rg}, title = {Defining Batches under Consideration of Quality-Related Factors for Improved Failure and Scrap Analysis}, volume = {882}, journal = {Applied Mechanics and Materials}, publisher = {Trans Tech Publications}, address = {Baech}, issn = {1662-7482}, doi = {https://doi.org/10.4028/www.scientific.net/AMM.882.17}, pages = {17 -- 23}, year = {2018}, language = {en} } @article{BaierFrommherzNoethetal.2019, author = {Baier, Lukas and Frommherz, Julian and N{\"o}th, Elmar and Donhauser, Toni and Schuderer, Peter and Franke, J{\"o}rg}, title = {Identifying failure root causes by visualizing parameter interdependencies with spectrograms}, volume = {2019}, journal = {Journal of Manufacturing Systems}, number = {53}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0278-6125}, doi = {https://doi.org/10.1016/j.jmsy.2019.08.002}, pages = {11 -- 17}, year = {2019}, language = {en} } @article{ScholzZwingelSchudereretal.2019, author = {Scholz, Michael and Zwingel, Maximilian and Schuderer, Peter and Franke, J{\"o}rg}, title = {Sustainable intralogistics due to uniform software and modular transport entities}, volume = {2019}, journal = {Procedia CIRP}, number = {80}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {https://doi.org/10.1016/j.procir.2019.01.033}, pages = {239 -- 244}, year = {2019}, abstract = {The current trend in internal value stream structures shows a clear development towards a combination of the specific advantages of the operation-oriented and the process-oriented production systems. All scientific approaches have in common that flexible intralogistics production networks require an autonomous and intelligent transportation systems that is not designed for a specific task, but can take on different transport roles due to their versatility. However, a comprehensive analysis of current designs and research projects in the field of AGVs and intralogistics transport robots show that there is neither the necessary interoperability of different systems nor a system architecture that addresses a flexible material flow independent of the physical design of the transportation system. AGVs mainly have a central control system, which manages the generation of transport orders and their disposition on the vehicles. In addition, the routes are specified centrally for the vehicles, even if they have free navigation. The individual transport unit is therefore only an executing machine that processes the assigned transport orders without any influence on order dispatching or route planning. Therefore, these AGV approaches do not have the flexibility and autonomy required for an intralogistics production network. The research project addresses the necessary interoperability of logistics systems and the abandonment of proprietary standalone solutions. For this purpose, methods for digitizing the workspace, route planning and path execution using a service-oriented architecture (SOA) were developed. A central component of this architecture is the approach described in the paper to enable decentralized path planning on the vehicles. Therefore, the path planning must be applicable to different target platforms without implementation effort and the vehicle software must be designed independently of the application. This approach allows intralogistics systems to be flexible and adaptable, resulting in a more sustained use of these systems.}, language = {en} } @article{DonhauserRackowHirschbrunnetal.2016, author = {Donhauser, Toni and Rackow, Tobias and Hirschbrunn, Johannes and Schuderer, Peter and Franke, J{\"o}rg}, title = {Valid Methodology for Using Discrete Event Simulation to Improve the Resource Consumption for the Manufacturing of Masonry Units}, volume = {2016}, journal = {Procedia CIRP}, number = {41}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {https://doi.org/10.1016/j.procir.2015.12.016}, pages = {57 -- 62}, year = {2016}, abstract = {Owing to a high inflexibility of the factory layout, manufacturers of masonry units are bound to organizational adjustments seizing optimization measures. Regarding such plants, having a given complexity based on a rigid concatenation of heterogeneous sub-processes with heavy goods to be transported, conventional measures such as Lean Management principles involve great efforts in execution. Therefore, an IT solution for planning and controlling the operational processes is to be developed. This solution will be implemented through simulation-supported optimization to support dealing with a higher complexity and setting up a more resource-efficient manufacturing process. As a basis, a corresponding factory is mapped sufficiently accurate in every detail in a discrete event analysis (DEA) model. In this paper, a methodology, how to configure an arbitrary calcium silicate masonry unit (CS) plant in a simulation model, is presented for the first time. Relevant data is cataloged and modelling approaches for the controlling methods are pointed out. Special regard is paid to optimization measures at the crucial point of the transition from bulk material to piece goods, which has not been regarded yet in discrete event simulation modelling. The major aspect is a comparison of a unit-based approach and a variable-controlled approach, regarding the runtime. A case study follows conclusively, which aided in validating the methodology by simulating various scenarios. As a result, several strategic and operational optimization potentials were identified.}, language = {en} } @article{RackowJaviedDonhauseretal.2015, author = {Rackow, Tobias and Javied, Tallal and Donhauser, Toni and Martin, C. and Schuderer, Peter and Franke, J{\"o}rg}, title = {Green Cockpit: Transparency on Energy Consumption in Manufacturing Companies}, volume = {2015}, journal = {Procedia CIRP}, number = {26}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {https://doi.org/10.1016/j.procir.2015.01.011}, pages = {498 -- 503}, year = {2015}, abstract = {Companies are forced by rising energy costs to seize control of their energy consumption to maintain contestability. There-fore, transparency over the companies' energy flux along the production process is required. Energy data management software is helpful, but cost-intensive. Hence, especially small and medium sized enterprises (SME) spare this investment. In this paper, the requirements for an energy controlling infrastructure in SME are elaborated, followed by a deduced software-architecture which supports the respective controlling structure. Further, the prototypical realization of the corresponding tool "Green-Cockpit" will be presented. The free of cost, open source and web-based tool is designed to help companies monitor, interpret, analyze, plan and report their energy consumption. The Green Cockpit tool outperforms other energy management software at management disciplines with its ability to not only analyze energy consumption, but plan and control it additionally.}, language = {en} } @article{RackowKohlCanzanielloetal.2015, author = {Rackow, Tobias and Kohl, Johannes and Canzaniello, Angelo and Schuderer, Peter and Franke, J{\"o}rg}, title = {Energy Flexible Production: Saving Electricity Expenditures by Adjusting the Production Plan}, volume = {2015}, journal = {Procedia CIRP}, number = {26}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {https://doi.org/10.1016/j.procir.2014.07.179}, pages = {235 -- 240}, year = {2015}, abstract = {The energy turnaround in Germany increases the share of renewable energies. Since the amount of renewable energy supply is immanently subject of variation, the electricity price at the European Energy Exchange EEX is highly volatile. If companies would purchase the electricity directly at the EEX instead of from a wholesale power supplier along with price fixing, companies would benefit from increasing production in times with low electricity costs and reducing production in high-cost times. This paper shows, that influencing respectively shifting the time of electricity consumption -e.g. by adjustment of process parameter, shift period, order of jobs or machine utilization, by pausing of processes or delaying of job starts - can theoretically reduce electricity expenditures. The measures are being explained and discussed, followed by a description of company in-house and external requirements for the energy flexible production.}, language = {en} } @article{DonhauserEbersbachFrankeetal.2018, author = {Donhauser, Toni and Ebersbach, Tobias and Franke, J{\"o}rg and Schuderer, Peter}, title = {Rolling-reactive Optimization of Production Processes in a Calcium Silicate Masonry Unit Plant Using Online Simulation}, volume = {2018}, journal = {Procedia CIRP}, number = {72}, publisher = {Elsevier}, address = {Amsterdam}, issn = {2212-8271}, doi = {https://doi.org/10.1016/j.procir.2018.03.266}, pages = {249 -- 254}, year = {2018}, abstract = {In case of concatenated, complex material flow structures such as those in calcium silicate masonry unit plants, plan deviations pose a major challenge for an efficient order processing in production. In order to overcome the separation between the planning and operational levels in traditional production planning and control systems, this paper presents a validated concept to react immediately to critical events while maintaining efficiency using a modular, rolling-reactive optimization tool. A substantial difference to conventional rescheduling models is the intensive integration of event-discrete simulation, which delivers more realistic results and reduces the threat of an obsolete model due to simple modelling.}, language = {en} }