Now showing 1 - 2 of 2
  • Publication
    Design and assessment of quality control loops for stable business processes
    ( 2012)
    Schmitt, Robert
    ;
    Monostori, László
    ;
    Glöckner, Henrik
    ;
    Viharos, Zsolt János
    Due to their open and dynamic character, business processes in lack of adequate feedback mechanisms tend to become unstable in case of unanticipated disturbances or target adjustments. In order to face this challenge and to ensure entrepreneurial quality the implementation of quality control loops is proposed, whose design is derived from cybernetics. The paper discusses requirements for the characteristics of quality control loops and presents a new approach for their assessment implemented in software. The developed tool also serves as a knowledge exchange platform since it provides an opportunity for exchanging standardized control loop elements.
  • Publication
    Robust production control against propagation of disruptions
    ( 2011)
    Tolio, Tullio
    ;
    Urgo, Marcello
    ;
    Váncza, József
    In hierarchical production control systems, planning decides on capacities and operations so as to meet demand, while scheduling should guarantee the execution of production plans even in face of uncertainties. The management practice advocates rolling horizon approaches despite the danger of plan nervousness. We propose a novel framework to handle uncertainties closer to the root of their sources, when scheduling local resources. The method keeps the complexity of planning and scheduling at bay and stops the propagation of local disruptions to other resources. The paper presents the theoretical model, the solution technique, and shows their applicability on a case study taken from the tool industry.