负荷型对偶单元授权卡片交叠循环系统性能仿真

Performance Simulation of Load-based Paired-cell Overlapping Loops of Cards with Authorization

负荷型对偶单元授权卡片交叠循环(load-based paired-cell overlapping loops of cards with authorization,LBPOLCA)是一类面向非重复性制造车间的新型物料控制系统,用于实现车间内加工资源的负荷均衡和在制物料的有效流转。现有研究已经验证了LB-POLCA系统的有效性,但其大多忽视了物料之间存在的装配关联性,即装配工序只有在其所需物料齐套之后才能开工,此时系统控制的核心需求是实现关联物料的加工进度协同。鉴于此,本文针对一类带装配约束的一般流水车间,首先给出相适应的LB-POLCA系统运行机制及其涉及的卡片获取规则、负荷计算方法和作业分派规则等关键控制参量;然后基于Plant Simulation平台构建一般化的仿真模型,并通过大量实验揭示出不同装配关联度和不同系统控制参量组合下的系统性能变化。

Load-based paired-cell overlapping loops of cards with authorization(LB-POLCA)is a new type of material control system for non-repetitive manufacturing workshops,which is used to realize the load balance of processing resources in the workshop and the effective flow of materials in production.The existing research has verified the effectiveness of LB-POLCA,but most of them ignore the assembly relevance between materials,that is,the assembly process can only be started after the required materials have been completed.At this time,the core of control system is to achieve the processing coordination of related materials.In view of this,for a class of general flow shop with assembly constraints,the appropriate operation mechanism of LB-POLCA system and the key control parameters such as the card allocation rules,approaches to load accounting and dispatching rule are first given;then,a generalized simulation model is established based on the platform of simulation software eM-Plant,and a large number of experiments conducted to reveal the changes of system performance under different assembly relevance level and different combinations of system control parameters.