Heuristic Approach to Satisfaction Level of Demand Maker in Three Stage Scheduling with Fuzzy Due Time

Abstract

This paper discusses three stage flow shop scheduling including transportation time in frame work of fuzzy due date with bi-objective criteria. On one side to minimize the tardiness of jobs while on other way to determine the satisfaction level of demand maker with the help of fuzzy due date to each job. The analysis has been made through heuristic algorithm based on mathematical theorem regarding tardiness of the jobs.

The objective of the paper is to find due time to each job and optimal or near optimal sequence of jobs in order to minimize the tardiness of jobs so that they can be performed within time. The paper ends with a numerical illustration and analyse graphically the satisfaction level of demand maker.

Keywords: Fuzzy processing time, trapezoidal, tardiness, <AHR>, linguistic variable, fuzzy quantifier.