LOT STREAMING PERMUTATION FLOW SHOP WITH ENERGY AWARENESS

FLORENCIA D'AMICO; DANIEL A. ROSSIT; MARIANO FRUTOS

International Journal of Industrial Engineering and Management

UNIVERSITY OF NOVI SAD, FACULTY OF TECHNICAL SCIENCES

Año: 2021 vol. 12 p. 25 - 36

2217-2661

In this work, the flow shop scheduling problem with energy awareness is approached with lot-streaming strategies. Energy consumption is modeled within the objective function, together with the makespan, by means of a normalized and weighted sum. Thus, reducing energy consumption guides the optimization process. For lot streaming approaches mathematical models are provided and assessed. The results showed that lot-streaming is an efficient strategy to address this problem, allowing to improve both makespan and total energy consumption compared to the problem without lot-streaming. In turn, the selection of processing speeds for each sublot was incorporated, which improved the strategy yielding the best quality solutions.