Document Type
Thesis
Date of Award
12-31-1990
Degree Name
Master of Science in Industrial Engineering - (M.S.)
Department
Mechanical and Industrial Engineering
First Advisor
Golgen Bengu
Second Advisor
Xiuli Chao
Third Advisor
Suebsak Nanthavanij
Abstract
Simulation is a state of art technique, widely used to analyze the behavior of complex and dynamic real time systems. This study consists of two parts. The first part involves in the development of a simulation model of a real time flow line, used to assemble Printed Circuit Boards. The desired performance measures of the system, like, utilization, starving, blocking, failure and maintenance are recorded. The model developed can be used as a test pad to analyze scheduling rules and heuristics. This is illustrated in the second part of the study which consists of studying the behavior of the Apparent Tardiness Cost (ATC) rule under different due date tightness factors. The parameters of this rule are experimented with to find their optimal values. The ATC rule was first proposed in the literature, to solve the weighted tardiness scheduling problem for a single work station. An attempt has been made in this study to extend its application to a flow line shop floor where the jobs arrive in batches. So, priorities are now assigned to batches of jobs instead of single jobs. Results prove the ATC rule to perform better than both the Earliest Due Date (EDD) rule, and, the Weighted Shortest Processing Time (WSPT) rule. But, the trends illustrated in the literature, when the ATC schedules relatively small number of single jobs to a single station problem, are no longer observed.
Recommended Citation
Anne, Srinivas, "Simulation based modeling and scheduling of a generalized flow- line" (1990). Theses. 2441.
https://digitalcommons.njit.edu/theses/2441
