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Sustainability 2018, 10(3), 841; https://doi.org/10.3390/su10030841

Multi-Objective Flexible Flow Shop Scheduling Problem Considering Variable Processing Time due to Renewable Energy

Department of Logistics Engineering, School of Mechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China
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Received: 5 February 2018 / Revised: 6 March 2018 / Accepted: 10 March 2018 / Published: 16 March 2018

Abstract

Renewable energy is an alternative to non-renewable energy to reduce the carbon footprint of manufacturing systems. Finding out how to make an alternative energy-efficient scheduling solution when renewable and non-renewable energy drives production is of great importance. In this paper, a multi-objective flexible flow shop scheduling problem that considers variable processing time due to renewable energy (MFFSP-VPTRE) is studied. First, the optimization model of the MFFSP-VPTRE is formulated considering the periodicity of renewable energy and the limitations of energy storage capacity. Then, a hybrid non-dominated sorting genetic algorithm with variable local search (HNSGA-II) is proposed to solve the MFFSP-VPTRE. An operation and machine-based encoding method is employed. A low-carbon scheduling algorithm is presented. Besides the crossover and mutation, a variable local search is used to improve the offspring’s Pareto set. The offspring and the parents are combined and those that dominate more are selected to continue evolving. Finally, two groups of experiments are carried out. The results show that the low-carbon scheduling algorithm can effectively reduce the carbon footprint under the premise of makespan optimization and the HNSGA-II outperforms the traditional NSGA-II and can solve the MFFSP-VPTRE effectively and efficiently. View Full-Text
Keywords: flexible flow shop scheduling problem; renewable energy; variable processing time; variable local search; low-carbon scheduling flexible flow shop scheduling problem; renewable energy; variable processing time; variable local search; low-carbon scheduling
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Wu, X.; Shen, X.; Cui, Q. Multi-Objective Flexible Flow Shop Scheduling Problem Considering Variable Processing Time due to Renewable Energy. Sustainability 2018, 10, 841.

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