Modeling the influence of set-up cycles on the logistic objectives

对于顺序依赖的安装时间，公司面临着在目标产出率、产能时间、在制品和进度可靠性之间进行权衡的挑战。到目前为止，还没有模型描述准备周期对这些物流目标的影响并具有普遍的有效性。研究项目旨在两个主要目标：i.开发一个定量模型来描述准备周期对产出率和生产时间的影响作为使用操作曲线的平均在制品的函数。ii开发一个定量模型来描述准备周期对延迟的影响作为平均在制品和设置系列的生产时间的函数。随着第一个主要目标的实现，准备周期对物流目标在制品周期、吞吐量时间和产出率的影响将首次以定量且普遍有效的方式建模。第二个主要目标的实现使得建立准备周期对延迟的影响模型成为可能。主要结果是作为在制品和设置系列生产时间的函数的最大和平均绝对迟到。因此，总目标是将所有四个物流目标建模为在制品和设置系列的生产时间的函数。这将使公司第一次能够根据全面的定量信息决定是否对建立周期进行排序，并在逻辑定位中设置建立周期的参数。

With Sequence dependent set-up times companies are facing the challenge to trade off the objectives output rate, throughput time, WIP and schedule reliability. Up to now no model exists that describes the impact of set-up cycles on these logistic objectives with general validity.The research project aims at two major goals:I. Development of a quantitative model that describes the impact of set-up cycles on output rate and throughput times as a function of the mean WIP using operating curves.II. Development of a quantitative model that describes the impact of set-up cycles on lateness as a function of the mean WIP and the production times of the set-up families. With the achievement of the first major goal, the impact of set-up cycles on the logistic objectives WIP, throughput time and output rate would be modeled for the first time in a quantitative and generally valid way.The achievement of the second major goal makes it possible to model the influence of set-up cycles on lateness. The main result is the maximum and the mean absolute lateness as a function of WIP and the production times of the set-up families.The overall goal therefore is to model all four logistic objectives as a function of WIP and of the production times of the set-up families. This will allow companies for the first time to decide on the basis of comprehensive quantitative information for or against sequencing with set-up cycles and to set the parameters of the set-up cycles in a logistic positioning.