Agility in assembly systems: a comparison model
Agility in assembly systems: a comparison model
复制标题
装配系统的敏捷性：比较模型
DOI：
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
G. Rosati
中科院分区：
文献类型：
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作者：
Luca Barbazza;M. Faccio;Fabio Oscari;G. Rosati
目的
本文旨在通过定义一种新颖的分析模型来分析不同可能的装配系统，包括完全柔性装配系统（FAS）等创新的潜在配置，该模型重点关注敏捷性概念及其对整个系统性能的影响，并评估单位直接生产成本方面的经济便利性。
设计/方法论/途径
作者提出了一个由牛顿第二定律导出的比较模型，引入了敏捷性（加速度）、装配系统对其运行状态任何变化的抵抗力（惯性）和单位直接生产成本（力）的定量定义。使用所提出的模型对不同类型的装配系统（手动、柔性和全 FAS）进行分析和比较，研究敏捷性、系统惯性及其对单位直接生产成本的影响。
研究结果
所提出的敏捷性定义和所提出的比较模型已被应用，将不同的参数集作为自变量，例如要组装的组件数量（产品模型复杂性）和系统的目标吞吐量。主要发现是一系列便利领域，对于给定的目标单位直接生产成本（力），定义了要采用的最敏捷的系统，或者对于给定的目标敏捷性（加速度），定义了要采用的最经济的系统，作为自变量的函数。
原创性/价值
这项工作的新颖之处在于，首先，对应用于装配系统的敏捷性进行了分析定义，并通过新比较模型的定义将其置于上下文中。基于敏捷性并通过使用不同的自变量集对不同装配系统进行比较是另一个令人感兴趣的因素。最后，由此产生的便利区域代表了一种理想的工具，可用于根据一个或多个系统参数最佳地选择最合适的装配系统。
Purpose
This paper aims at analyzing different possible assembly systems, including innovative potential configurations such as the fully flexible assembly systems (FAS), by defining a novel analytical model that focuses on the concept of agility and its impact on the whole system performance, also evaluating the economic convenience in terms of the unit direct production cost.
Design/methodology/approach
The authors propose a comparison model derived by Newton’s second law, introducing a quantitative definition of agility (acceleration), resistance of an assembly system to any change of its operative state (inertia) and unit direct production cost (force). Different types of assembly systems (manual, flexible and fully FAS) are analyzed and compared using the proposed model, investigating agility, system inertia and their impact on the unit direct production cost.
Findings
The proposed agility definition and the proposed comparison model have been applied considering different sets of parameters as independent variables, such as the number of components to assemble (product model complexity) and the target throughput of the system. The main findings are a series of convenience areas which either, for a given target unit direct production cost (force), defines the most agile system to adopt or, for a given target agility (acceleration), defines the most economical system to adopt, as function of the independent variables.
Originality/value
The novelty of this work is, first, the analytical definition of agility applied to assembly systems and contextualized by means of the definition of the new comparison model. The comparison between different assembly systems on the basis of agility, and by using different sets of independent variables, is a further element of interest. Finally, the resulting convenience areas represent a desirable tool that could be used to optimally choose the most suitable assembly system according to one or more system parameters.