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    Item type:Publication, Access status: with files ,
    Concept for material supply in fluid manufacturing systems
    (epubli, 2022-09)
    Hagg, Manuel
    ;
    Schulz, Robert
    Purpose: Through increasing individualization, volatile market demands or shorter product and innovation cycles, existing assembly systems in the automotive industry reach their limits. Different approaches are designed to address the need for adaptable systems. The Fluid Manufacturing System (FLMS), which has been developed within the research campus “Active Research Environment for the Next generation of Automobiles” (ARENA2036), aims to enable flexible and dynamic material flows. However, material supply in this environment is challenging due to new degrees of freedom or volatile demands. Therefore, the purpose of this paper is to describe a concept for short-term-oriented material supply in FLMS. The concept focuses on checking and ensuring material availability. Methodology: The methodology that is used to derive the concept for material supply is based on a step-by-step procedure allowing a systematic concept development using a problem-solving-oriented approach. The concept procedure includes different steps like concept initiation or selection of a solution. Findings: The result of this paper outlines a concept that supports short-term-oriented material supply in FLMS. More detailed, the concept supports checking and ensuring material availability. Originality: The presented concept contributes to check and ensure material availability during the operation of assembly systems under changing conditions.
    Publicationtype: Conference Paper
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    Item type:Publication, Access status: with files ,
    Algorithm for situation-dependent adaptation of velocity for shuttle based systems
    (epubli, 2019-09-26)
    Kriehn, Thomas
    ;
    Schloz, Franziska
    ;
    Schulz, Robert
    ;
    Fittinghoff, Markus
    Purpose: Shuttle based storage and retrieval systems (SBS/RS) are suitable for applications which require a high throughput. Many times, however, the maximum performance of SBS/RS is not required. For example, when customers initiate a large number of retrieval requests at a specific time, or when a large number of storage requests enter the system at fixed times due to scheduled inbound deliveries. This article presents and discusses an algorithm that is based on closed-loop-control. Methodology: A situation-dependent adaptation of the velocity to the currently required throughput or the number of currently awaiting orders requires an algorithm which needs to be implemented in the control of the SBS/RS. A simulation model of a SBS/RS will be introduced, which contains the control of the shuttle carriers and elevators as well as a model for calculating the energy requirement. Findings: The results of this paper is the quantified energy saving by the application of the algorithm for situation-dependent adaption of velocity for SBS/RS Originality: To our knowledge this is the first paper that introduces a situation-dependent adaption of velocity for SBS/RS.
    Publicationtype: Conference Paper
      275  409