A Service Target Method for Lead Time Quotation in Assembly Systems

摘要

This paper presents a method to assign product due dates for assembly systems with uncertain manufacturing and assembly processing times. The parts arrive to the system as dynamic. The product completion time is the sum of system flow time and arrival time. First, through utilizing the longest path analysis in queueing networks, the distribution function of system flow time is computed by Hartley and Wortham's method [27] and it is shown that the solutions achieved are significantly much faster than those obtained by Adlakha and Kulkarni's method. Then the product completion time distribution function is computed by the convolution of system flow time and arrival time. Product due dates are assigned by meeting a service target.