Comunicacions a congressos (Economia i Empresa)

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    Open Access
    A Dynamic Programming approach for batch cycle time optimization in hot metal forming
    (Elsevier, 2022-01-01) Nievas Viñals, Nuria; Pagès Bernaus, Adela; Bonada, Francesc; Echeverria Rovira, Lluís; Abio, Albert
    In the framework of the Fourth Industrial Revolution, the manufacturing industry has been immersed in a digitalization process leading to constantly increasing available data at the production line thanks to novel sensors, Cyber-Physical Systems, and the Industrial Internet of Things. These newly available process data streams can be leveraged for real-time planning, control, and process optimization towards a more efficient and competitive manufacturing paradigm. The metal forming process is a manufacturing process used in a wide variety of complex industrial pieces and products: from automotive parts such as car body panels to furniture, electronics, etc. Ensuring high quality and robust materials while optimizing production of parts is an important industrial challenge. Nowadays, batch and cycle time optimization rely on experience and expert knowledge. In this work, we propose a dynamic programming approach for real-time decision-making in hot metal forming production to minimize batch and cycle time. This paper introduces a successful proof of concept, and the first step for an autonomous self-learning control system in stamping processes, demonstrating its capabilities for overall batch and cycle time process optimization while maximizing product quality.
  • Item
    Open Access
    Hydraulic capital and economic growth in Spain
    (Fundació Universitat de Lleida, 2014) Aldaz Ibáñez, Natalia; Millán, Joaquín A.
    The relationships between basic hydraulic infrastructure and economic growth may be scale dependent; this means variable in strength and in time. We investigate the variable patterns of joint evolution of public hydraulic infrastructure and sector economic development in Spain during the 20th century by means of wavelets for exploratory data analysis. The next section surveys the problems of measuring (hydraulic) infrastructure and its impacts on the economy activity. Wavelets are introduced, without mathematics in section three. In section four the main results of the empirical analysis are summarized.