Wafer manufacturing Industries uses conventional controller, but in order to control the position in sub nanometer range conventional controller is not suitable, why because Tuning and augmenting the controller becomes difficult and expensive. So a robust controller is designed for wafer manufacturing system. The controller design in this paper is performed for the translational x and y DOFs in...

For efficient manufacture of moulds and dies and in order to meet the unstable market situation, a well organised reconfigurable manufacturing system is required. The geometric features of moulds and dies are not the same as discrete parts. They are contained elements on a block of steel and are usually in the form of contours, slots, corners, slope faces, curved surfaces and cavities. A lot of...

Imperfections due to the manufacturing process and in its resources areresponsible for the deterioration of functional characteristics and as a consequence, theproduct quality. In order to ensure a certain quality level, the tolerance synthesis tries todetermine admissible limits of workpiece and assembly characteristics. Tolerance synthesisor tolerance allocation, which belongs...

In recent decades, by introducing lean manufacturing the vulnerability to system disturbances has increased and so, the demand for dependable production equipment. The need for having high production equipment availability causes companies to need a more effective and efficient maintenance strategy in order to stay competitive. Despite the increasing demand on reliable production equipment, few...

Manufacturing is transitioning from a mass production model to service in which facilities ‘bid’ produce products. To decide whether bid for complex, previously unseen product, facility must be able synthesize, on the fly, process plan controller that delegates abstract manufacturing tasks supplied recipe available resources. Often processes depend data and objects (parts) they consume. formali...

The manufacturing enterprises are now experiencing high pressure of competition. In addition, the advancement in computer software, hardware, networks, information technologies and integration has been gradually reshaping the manufacturing companies by shifting from the industrial age to the information and knowledge era. Due to these elevated competitiveness and advanced computer technology, a...

the main objective of this study is to investigate the production factors productivity in large manufacturing sub-sectors. for this purpose, using statistical data for period 1972-2004, we have tried to study and analyze the trend and level of production factors productivity (partial and total productivity) in each sub-sectors classified according to isic two digits code. the average and margin...

In this article, the benefits offered by micro-fibrous scaffold architectures fabricated by textile manufacturing techniques are discussed: How can established and novel fiber-processing techniques be exploited in order to generate templates matching the demands of the target cell niche? The problems related to the development of biomaterial fibers (especially from nature-derived materials) rea...