关键词: 柔性流水车间, 机器, 自动导引小车, 实时调度, 基因表达式编程

Abstract: In the context of intelligent manufacturing,it is crucial to consider the real-time integrated scheduling of machines and Automatic Guided Vehicle(AGV)for improving the efficiency of the production system.Aiming at the situation of dynamic arrival of workpieces and uncertain processing times,a real-time scheduling method combining Gene Expression Programming and Discrete Event Simulation(GEP-DES)was proposed to solve the real-time integrated scheduling model between machines and AGVs based on minimizing the maximum completion time.In the offline phase,a three-segment real encoding was designed in GEP to describe the integrated operation process between the machine and AGV.The discrete event simulation process was used to obtain the objective function value to evaluate the performance of GEP indicators and mine efficient dispatching rules.The mined dispatching rules interacted with real-time information in the online stage workshop to achieve real-time integrated scheduling of machine and AGV.By comparing with the traditional dispatching rules,the effectiveness and superiority of the proposed method was verified.The research results provided methodological support for the real-time scheduling of machines and AGVs integration in flexible flow shop production with rapid response.

Key words: flexible flow shop, machine, automatic guided vehicle, real-time scheduling, gene expression programming