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Master's Dissertation
DOI
https://doi.org/10.11606/D.3.2001.tde-21022024-092122
Document
Author
Full name
Nerone Marques de Brito Junior
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2001
Supervisor
Committee
Barretto, Marcos Ribeiro Pereira (President)
Miyagi, Paulo Eigi
Santoro, Miguel Cezar
Title in Portuguese
Uma aplicação do Simulated Annealing (SA) para programação de ordens no chão de fábrica
Keywords in Portuguese
Algoritmos
Engenharia mecânica
Heurística
Abstract in Portuguese
Este trabalho apresenta uma proposta de solução do problema de programação de ordens através de uma analogia com os problemas de arranjo de espaço físico (problemas de "layout"). O algoritmo de resolução faz uso de uma heurística denominada LEO ("Linear move and Exchange Optimization" - Otimização por trocas lineares), baseada no algoritmo "simulated annealing" (SA). O SA é um algoritmo bastante utilizado para resolver problemas combinatórios, categoria que inclui os problemas de "scheduling" e "layout". A modelagem suporta cronogramas de produção com restrições de datas e é adaptável a problemas de uma máquina ou multi-máquina como as do tipo "flow shop" e "job shop". Os resultados alcançados indicam que o algoritmo LEO produz soluções melhores que algumas regras normalmente utilizadas como EDD e SWPT.
Title in English
Untitled in english
Keywords in English
Algorithms
Heuristics
Mechanical engineering
Abstract in English
In this work, a proposal for solving the Scheduling Problem through an analogy to the facility layout problems (FLP) is presented. The scheduling problem is solved using an heuristic algorithm called LEO (Linear move and Exchange Optimization) algorithm. The LEO algorithm is based on Simulated Annealing (SA), an algorithm for solving hard combinatorial optimization problems, as the Scheduling Problem and the FLP. This approach can support constrained schedules with due dates and other goals as well as multi-machine and single machine scheduling problems. Results for some experiments show that the LEO algoritm outperforms rules such as the EDD and SWPT rules.
 
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Publishing Date
2024-02-21
 
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