Modelling lateness and schedule reliability: how companies can produce on time

Modelling schedule reliability

“…Similar to Equation (4), the sequence deviation of an order can be employed to determine the portion of the order's lateness caused by the sequence deviation. Thus, (Lödding et al 2014;Kuyumcu 2013 …”

“…Knowing these correlations, it is then possible to partition an order's lateness into the proportions attributed to the backlog and sequence deviation, respectively (Kuyumcu 2013;Lödding et al 2014). This is briefly explained in Figure 2, which cumulatively depicts the planned and actual output of a workstation over time with the planned and actual completion date of an order.…”

“…Following that, the same list is sorted in the actual sequence of their processing in order to determine their actual rank. The rank in hours always corresponds to the sum of the work content for all of the orders up to and including the observed order (Lödding et al 2014;Kuyumcu 2013):…”

Modeling Lateness for Workstations with Setup Cycles

“…There are mainly two factors influencing schedule reliability: backlog and sequence deviation [2]. Backlog influences the mean value of output lateness while sequence deviation determines its standard deviation [5,6]. The mean lateness is the ratio between the mean backlog and the mean output rate [4]:…”

Requirements for a Value Stream Mapping in Make-To-Order Environments

“…Schedule reliability is one of the most important internal logistic objectives for MTO companies [10]. The schedule reliability describes the stability of logistic processes within a production [11].…”