The fierce global competition in the international markets forces manufacturers to compete in quality, cost, and the time to market aspects of their products. Knowing the cost of the manufactured components is essential for efficient operation and competitive production. The current evolution of competitive manufacturing requires a shorter market life span of products—emphasizing the design and...

State transitions in Computer Integrated Manufacturing Systems result either from the execution of the planned actions or from the occurrence of unpredictable events. One key requirement for task planning designed for CIM systems, is the ability to monitor events and respond to them appropriately. Related issues include the specification and classification of possible system faults, errors and ...

Die Energiebranche befindet sich seit einigen Jahren in einem starken, sich beschleunigenden Wandel, der im Wesentlichen auf zwei Beweggründe zurückzuführen ist. Zum einen werden die endlichen Ressourcen wie Kohle und l, deren Verbrennung nach wie vor den Großteil der Energie zur Stromerzeugung liefern, knapper und damit teurer, so dass die Energieversorger bemüht sind, dem Preisdruck auszuweic...

It is vital for manufacturing companies not only to cope with frequent product changes and fluctuating demands, but also to reduce the impact of disturbances on the overall manufacturing performance. In this paper a real-time scheduling mechanism for dynamic discrete manufacturing is presented. Modified mean flow time performance for different scheduling approaches is compared through off-line ...

We present some results on stabilization for reduced-order models (ROMs) of partial differential equations. The stabilization is achieved using Lyapunov theory to design a new closure model that is robust to parametric uncertainties. The free parameters in the proposed ROM stabilization method are optimized using a model-free multi-parametric extremum seeking (MES) algorithm. The 3D Boussinesq ...

This paper presents an overview of a neutral reference architecture for integrating distributed manufacturing simulation systems with each other, with other manufacturing software applications, and with manufacturing data repositories. Other manufacturing software applications include, but are not limited to systems used to: 1) design products, 2) specify processes, 3) engineer manufacturing sy...

This paper addresses the problem of fault detection for linear parameter-varying systems in the presence of measurement noise and exogenous disturbances using Set-Valued Observers (SVOs). The applicability of current methods is limited in the sense that, to increase accuracy, the detection requires a large number of past measurements and the boundedness of the set-valued estimates is only guara...

We study in this paper the problem of adaptive trajectory tracking for nonlinear systems affine in the control with bounded state-dependent and time-dependent uncertainties. We propose to use a modular approach, in the sense that we first design a robust nonlinear state feedback which renders the closed loop input to state stable (ISS) between an estimation error of the uncertain parameters and...

Additive Manufacturing describes the technologies that can produce a physical model out of a computer model with a layer-by-layer production process. Additive Manufacturing technologies, as compared to traditional manufacturing methods, have the high capability of manufacturing the complex components using minimum energy and minimum consumption. These technologies have brought about the possibi...

Electro Discharge Machining (EDM) is a very efficient machining process widely used in manufacturing components of complicated geometry. Based on its nature, i.e. material removal by electric discharge, the process induces thermal stresses that in turn result in generation of wide spread micro-cracks on the surface of the machined part. In this paper the influence of EDM characteristic paramete...