this paper considers the job scheduling problem in virtual manufacturing cells (vmcs) with the goal of minimizing two objectives namely, makespan and total travelling distance. to solve this problem two algorithms are proposed: traditional non-dominated sorting genetic algorithm (nsga-ii) and knowledge-based non-dominated sorting genetic algorithm (kbnsga-ii). the difference between these algor...

A virtual factory integrated manufacturing system combined with system simulation and virtual reality is introduced in this paper. We describe the system architecture and development methodology, provide the working principle of process simulation and monitoring in virtual factory, and then explain the detailed applications of virtual factory integrated manufacturing system. With the visualizat...

during dental education, dental students learn how to examine patients, make diagnosis, plan treatment and perform dental procedures perfectly and efficiently. however, progresses in computer-based technologies including virtual reality (vr) simulators, augmented reality (ar) and computer aided design/computer aided manufacturing (cad/cam) systems have resulted in new modalities for instruction...

In this paper, a new mathematical model for the problem of job scheduling in virtual manufacturing cells (VMC) is presented to minimizing the completion time of all jobs. Sequence dependent setup times of machines is considered and lot-streaming is possible. In Virtual manufacturing cells, each job has a different processing path and there is a set of machines for processing each operation. The...

Agile Manufacturing (AM) is a new concept in manufacturing intended to improve the competitiveness of firms. In 21 st century, businesses in order to overcome their competitors, should be able to handle challenges of demanding customers seeking high quality, low cost products and also become more flexible with their specific and rapid changing needs. One of the recent concepts in support of fle...

Virtual reality is becoming a real business-oriented technology and holds great potentials especially in computerised manufacturing applications. Technical problems however have to be resolved before it can be practically employed. This paper reports the research into one of the crucial and challenging problems -the pain-taking and tedious process of creating and managing virtual manufacturing ...

A Product Oriented Manufacturing System is designed for the manufacture of a product or a family of similar products. POM may be seen as a development of traditional Cellular Manufacturing and tends to involve more than one cell. A POMS may either be physically organized in a single place or be made of distributed manufacturing or servicing units, thus comprising a virtual system. To be efficie...

The present manufacturing sectors are burdened with increasing speed of transitioning new global business developments into production processes. This forces the old approaches of information management to adopt better evolution capabilities. Although the concept of virtual manufacturing is to facilitate integration of production processes in global industrial organizations, its information man...

The research area “Virtual Manufacturing” can be defined as an integrated manufacturing environment which can enhance one or several levels of decision and control in manufacturing process. Several domains can be addressed: Product and Process Design, Process and Production Planning, Machine Tool, Robot and Manufacturing System. As automation technologies such as CAD/CAM have substantially shor...