Purpose

Assembly line is a common production form and has been effectively used in many industries, but the imprecise processing time of each process makes production line balancing and capacity forecasting the most troublesome problems for production managers. In this paper, uncertain man-hours are represented as interval grey numbers, and the optimization problem of production line balance in the case of interval grey man-hours is studied to better evaluate the production line capacity.

Design/methodology/approach

First, this paper constructs the basic model of assembly line balance optimization for the single-product scenario, and on this basis constructs an assembly line balance optimization model under the multi-product scenario with the objective function of maximizing the weighted greyscale production line balance rate, second, this paper designs a simulated annealing algorithm to solve problem. A neighborhood search strategy is proposed, based on assembly line balance optimization, an assembly line capacity evaluation method with interval grey man-hour characteristics is designed.

Findings

This paper provides a production line balance optimization scheme with uncertain processing time for multi-product scenarios and designs a capacity evaluation method to provide managers with scientific management strategies so that decision-makers can scientifically solve the problems that the company's design production line is quite different from the actual production situation.

Originality/value

There are few literary studies on combining interval grey number with assembly line balance optimization. Therefore, this paper makes an important contribution in this regard.

中文翻译：

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基于区间灰度处理时间的装配线平衡与产能评估

目的

装配线是一种常见的生产形式，在许多行业得到了有效的应用，但各工序的加工时间不精确，使得产线平衡和产能预测成为生产管理者最头疼的问题。本文将不确定工时表示为区间灰数，研究区间灰工时情况下的生产线平衡优化问题，以更好地评估生产线产能。

设计/方法论/途径

首先构建了单产品场景下的装配线平衡优化基本模型，并在此基础上构建了多产品场景下以加权灰度产线平衡率最大化为目标函数的装配线平衡优化模型。其次，本文设计了模拟退火算法来解决问题。提出邻域搜索策略，基于装配线平衡优化，设计具有区间灰色工时特征的装配线产能评估方法。

发现

本文提出了针对多产品场景处理时间不确定的产线平衡优化方案，并设计了产能评估方法，为管理者提供科学的管理策略，以便决策者科学解决公司设计产线差异较大的问题从实际生产情况来看。

原创性/价值

将区间灰数与装配线平衡优化相结合的文献研究很少。因此，本文在这方面做出了重要贡献。