Wang Mei-lin, Zeng Jun-jie, Cheng Ke-qiang, et al. A Research on Improved Genetic Algorithm for Flexible Job Shop Scheduling Problem Based on MPN[J]. 2021, 38(5): 24-32.
Wang Mei-lin, Zeng Jun-jie, Cheng Ke-qiang, et al. A Research on Improved Genetic Algorithm for Flexible Job Shop Scheduling Problem Based on MPN[J]. 2021, 38(5): 24-32.DOI: 10.12052/gdutxb.210001.
A Research on Improved Genetic Algorithm for Flexible Job Shop Scheduling Problem Based on MPN
The large-scale HFS (Hybrid Flow Shop) system has the characteristics of large scale and many resource constraints
which causes dimension disasters during job scheduling
which results in difficult search and solution problems. Addressing such problems
an improved genetic algorithm is proposed
based on the MPN (Manufacturing Petri Net) model
with the makespan as the optimization goal. Firstly
the structure of the chromosome is redefined
and the corresponding algorithm of chromosome arrangement segment used to compress the search space. Secondly
the particle swarm optimization (PSO) optimization mechanism is used to guide the direction of chromosome optimization in the chromosome crossover operator
and the simulated annealing algorithm (SAA) mechanism used in the chromosome mutation operator to prevent the premature convergence of the genetic algorithm
and then after each population iteration
the current maximum individual uses the neighborhood search mechanism to try to improve the fitness of the best individual. Finally
the experimental data shows that the improved genetic algorithm has made great improvements in the optimization of the solution.
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references
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