Hiwa Farughi

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Flexibility in job shop scheduling is a main problem that has been considered by many of researchers in recent years.So Scheduling for the flexible job shop is very important in the field of production management and combinatorial optimization. However, it is quite difficult to achieve an optimal solution to this problem in medium and actual size problems(More)
This paper deals with part sequencing and optimal robot moves sequence in 2-machine robotic cells according to Petri net graph. We have assumed that the robotic cell is capable of producing same and different parts. We have considered a new motion cycle for robot moves sequence which is the development of existing motion cycles in 2-machine robotic cells.(More)
In this paper, the cyclic scheduling problems in 2-machine robotic cells have been studied. We investigated the timed Petri network graph for modeling the part sequencing and the optimal robot moves sequence in robotic manufacturing cells. The robotic manufacturing cell considered in this study has two identical machines and one single gripper robot. Also,(More)
The flexible job shop scheduling problem (FJSP) is an extension of the classical job shop scheduling problem (JSP) which allows an operation to be processed by any machine from a given set of machines. FJSP is NP-hard and presents two major difficulties. The first is to assign each operation to a machine out of a set of capable machines; and the second(More)
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