Development and maintenance of control software has emerged as one of the most difficult problems associated with building Flexible Manufacturing Systems (FMS). FMS controllers , potentially the most flexible FMS components, are characterized by their inflexibility. To support configuration flexibility of FMS controllers, this work proposes a modular hierarchical control structure which combine...

A common approach to increase reliability and efficiency of manufacturing systems is optimal scheduling. In this paper, we consider scheduling problems for a specific type of systems where batch processes are running in parallel. The goal is to schedule the interaction between the parallel processes, in the form of energy flows, to minimize a desired objective. We make use of a max-plus approac...

In this paper we introduce the architecture of an allocation and management system capable to deal with the complexity of Flexible Manufacturing Systems (FMS). We show how to obtain the model of an FMS based on the fusion of places of Place/Transition nets. Also, we show how this model can be structurally reduced, by using Coloured Petri Nets (CPN). We also determine a general model which is in...

Petri-Net is widely used in the field of modeling a flexible manufacturing system (FMS) because of its intrinsic features such as concurrency, uynchronization, conflict, and eventtriggering. But designing a Petri-Net Model for an FMS is extremely tedious and difficult for debugging. Therefore, an automatic Petri-Net generator which can generate a bug-free model for an FMS is rather useful and p...

Process planning and scheduling used to be two very separate processes. However, owing to the recognition of the intricate relationship between them, recent work has focused on integrating the two processes. The use of flexible process plans in scheduling allows more flexibility in production and thus gives substantial cost savings. It also increases the solution space of the optimisation probl...

In this paper, we discuss scheduling problems in semiconductor manufacturing. Starting from describing the manufacturing process, we identify typical scheduling problems that can be found in semiconductor manufacturing systems. We describe batch scheduling problems, job shop scheduling problems, scheduling problems with secondary resources, multiple orders per job scheduling problems, and sched...

Reconfigurable machining system (RMS) is a new class of manufacturing system recently proposed in [1], which aims at combining the high throughput of dedicated manufacturing lines (DML) with the flexibility of flexible manufacturing systems (FMS). An RMS can simultaneously manufacture multiple product types with high throughput comparable to a DML, making it an ideal choice for the high-volume ...

This paper considers a two-stage assembly flow shop scheduling problem. When all parts of each product are completed in the first stage, they are assembled into a final product on an assembly machine in the second stage. In order to reduce the delivery cost, completed products can be held until completion of some other products to be delivered in a same batch. The proposed problem addresses sch...

To meet the customized requirements of customers is core orientation to achieve transition from production-centered manufacturing service-centered manufacturing. As an important part smart systems in production and operation level dominated by material flow, flexible (FMS) have make several transitions such as incorporating procedures, containing products, meeting requirements. existing researc...

One of the new computer technology for controlling production systems is an autonomous decentralized Flexible Manufacturing System (FMS). The autonomous decentralized FMS aims at high production efficiency by giving self-control or decentralizing the plan, design and operation of FMS. This paper discusses the intelligent real-time decision making necessary for realizing an autonomous decentrali...