基于组合规则的作业车间AGV联合调度优化

Combined rules based optimization for AGV joint scheduling in job shop

  • 摘要: 以具有自动导航小车(automated guided vehicle, AGV)储运系统的智能车间为研究背景,针对作业车间内机床与AGV联合调度优化问题开展研究。首先,分析作业车间AGV联合调度问题特征,以此建立AGV-加工设备联合调度问题的数学模型以便精确算法求解;随后,将联合调度问题解耦成工序排序与AGV选择两个强关联的子决策问题,在此基础上构建了一套组合规则算法生成框架,并嵌入多样化的启发式规则,设计多种组合规则算法;最后,针对差异化场景算例,对比分析商业求解器Gurobi与组合规则算法的求解结果,并深入分析组合规则算法的有效性和场景适应性。

     

    Abstract: This paper takes material handling system in intelligent workshop with AGV(automated guided vehicle) as research background, and a joint scheduling optimization of machine and AGV in job shop is abstracted. This research is conducted as follows: Firstly, the mathematical model of AGV-machine joint scheduling is established at a full consideration of problem characteristics, the mathematical model is used in the exact algorithm; Then, the joint scheduling problem is decomposed into two strongly related sub-decisions, which are job sequencing and AGV selection decision, a combined rule generating framework is constructed, various combined rules are generated by embedding diverse heurstic rules into the framework; Finally, the effectiveness and scenario adaptability of combined rules are analyzed by comparing their experimental results with exact solutions of commercial solver Gurobi in differentiated test cases.

     

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