Assigning proper dispatching rules dynamically has been shown to enhance various performance measures for a flexible manufacturing system (FMS). To achieve this, real-time salient information of the system is extracted and then a rule’s dispatching mechanism is built for the scheduling task. For a dynamic scheduled FMS, two critical issues dominate the performance; the first is the selection of...

This paper focuses on handling disruptions in Flexible Manufacturing Systems (FMS). There are several issues which make this problem especially difficult to translate to real life systems. First the lack of appropriate tools which both capture the essence of such systems and provide optimization tools and second, the complexity of such systems which make the scheduling and re-scheduling process...

While manufacturing industry facing tough market competition, quickly responsive and flexible Job-Shop Scheduling System, JSSS, seems more attractive in nowadays. Research and applications on JSSS were summarized in this paper. A new framework of JSSS was designed in our research. A synthetic method was used here in order for efficiency and practicality. We took advantage of Multi-Agent System ...

A tool for performance evaluation will be presented in this paper. The tool is named BAL and is based on the timed process algebra BTC incorporating resources as well. BAL begins by first making the syntactic analysis of the system specification, and then draws up its relevant transition graph by applying the rules of the operational semantics and solves a performance optimization problem relev...

Manufacturing flexibility is one of the key determinants of development of modern production systems. The article presents the importance of flexibility factor in the process of manufacturing systems development during the 20 th century. In particular, craft manufacturing, dedicated manufacturing systems (DMS) and flexible manufacturing systems (FMS) were characterized. Finally, actual problems...

OF THE PHD THESIS Researches on the design and management of manufacturing systems Ciprian CRISTEA Technical University of Cluj-Napoca, Romania The PhD thesis is being structured on seven chapters. Each one of them begins with a set of objectives and it ends with the conclusions. Chapter 1 makes an introduction in the problem of manufacturing and contains an evolution of the manufacturing conce...

In this paper it’s investigated the impact of the Tabu List size, neighborhood generation approach and the managing of the decision variables of the Objective Function in the quality of a Tabu Search solution to the Scheduling Problem applied to a Flexible Manufacturing System. It was used a Part Scheduling Model, which starts with qualitatively different initial solutions that yields experimen...

This paper discusses an extension of our previous work (Saitou, 1998) on robustness optimization of flexible manufacturing systems (FMS) that undergo forecasted production plan variations. The extension is made to a more general class of FMS performing “non-linear” or “cyclic” production that allows multiple operation types per one machine type. As in our previous work (Saitou, 1998), a configu...

Flexible job-shop scheduling problem derived from the job-shop scheduling problem, and is more realistic than the job-shop scheduling problem in the manufacturing enterprise. It should be utilized with high efficiency. But it is a multi-objective optimal problem. Three minimization objectives (Maximum completion time (makespan), Total workload of machines and Workload of the critical machine) a...