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Paper presents some simulation researches of milling process basis of a numerical calculations. Titanium and corrosion resistant alloys (Ti6Al4V, 34CrNiMo6) workpieces with geometrically complicated surfaces (free-form surfaces) were machined with a tool made of sintered carbide. After simulation a machining of the modeled surfaces was performed on the CNC milling center. Different strategy of tool...
This paper describes two approaches to distributed control of discrete event manufacturing systems that have been developed at Cracow University of Technology. The first one applies Object Observable Petri Nets for modelling and analysis of manufacturing systems while the second one uses UML for system modelling and intelligent agents for design and implementation of control system. Software for distributed...
The paper presents the results of research & development done at the University of Žilina, Faculty of Mechanical Engineering in the area of Digital Engineering and simulation in the design of products and production systems. The digital technologies are used in innovation process of products and production systems. The paper describes the concept of Digital Factory being developed at the University...
In the article the authors propose an extended ontological model for distance learning, concerning pedagogical and cognitive requirements of the teaching/learning process. The main characteristic of the dedicated ontological model is reusability, which manifests itself in the possibility of adapting the knowledge model to different contexts and for different users by simply enabling knowledge sharing...
In the work the chosen methods for evaluation of a significance of controllable parameters in technological process results are compared. The task was realized on the basis of roller burnishing process of turned shaft made of 1.503 steel. The methods, which are compared are: a 23 full factorial design and a Shainin method. Considered controllable parameters were: rate of feed, force of roller pressure...
In the paper the forecasting models of tool use in dii erent intervals of time were presented. The models were worked out by the use of hybrid neural networks in the form of: linear neural network (L) - multi-layer networks with error backpropagation (MLP), L network - Radial Basis Function network (RBF), MLP network - RBF network and L network - MLP network - RBF network. The comparison of these...
Intangible resources are the source of competitive advantage in the knowledge economy. Knowledge and intellectual capital (IC) within companies have gathered worldwide atention, theories and methods for knowledge creation management have been developed for organizations and alliances. Knowledge has currently become a main part of manufacturing resources and a prerequisite for success in the production...
The article concerns including of environmental aspects during design phase of households appliances. The assessment criteria for this kind of products from EU regulations have been characterized. Based on them additional set of indicators have been proposed. The indicators have been implemented into agent system that supports the designer during the design phase in the product life cycle, thus enabling...
The manufacture and consumption of market products shows ever growing trends, and this means not only the supply and demand volume but also, to a higher and higher extent, searching for new products distinguishable from the variety of products on the market. Not only new methods of market investigation have appeared to specify its requirements, but some attempts were also made at elaborating suitable...
The work presents a new methodology of computer aided FMS machine tools selection. Flexible manufacturing systems (FMS) are systems which allow manufacturing of parts in small lot sizes, keeping a high level of productivity and low costs of production. Despite the fact that applied research on designing FMS systems has been continued for several years, there are no methodological solutions that can...
The aim of this paper is to show that absence of industrial controllers with appropriate capabilities - in the literature pointed out as the main development-related barrier for industrial deployment of Intelligent Manufacturing Systems (IMS) - is out of date. Trends in factory automation and the concept of Programmable Automation Controllers (PAC), which creates a promising perspective for industrial...
This article presents the development of a system for predicting surface roughness, using a feed-forward neural network. The primary goal was to develop a system in order to predict with complex reliability and defined accuracy. However, this system is designed in such a way that it is also possible to use it for various other workpieces. The described system uses a neural network which receives signals...
A theory of the Computer Aided Design systems (CAD) has been one of the main targets of our research for many years. Generally CAD software is used for algorithmic tasks: calculations (e.g. optimisation or simulation), storage and searching for data in databases and edition of drawings and texts. However, many tasks are unsupported. Recently, a feasibility of Artificial Intelligence (AI) to improve...
Today, it is hard to imagine a production company which is not using information technology. IT (Information Technology) infrastructure and software have become indispensable tools used by the majority of companies. Moreover, many companies could not run their business if it was not for effcient IT infrastructure and involvement of highly qualified IT specialists. The interpretation of the ERP (Enterprise...
Current manufacturing systems must operate under resource constraints. Simulation can help to improve the operation of such manufacturing systems. This paper describes the principles of computer simulation and emulation used for the modelling of behaviour of real production systems. Simulation as the technology of 21. Century is used for the analysis of dynamics of manufacturing system. Emulation...
The aim of this paper is to present a model of cooperation between universities and business. This model is based on the needs of academic centres and is currently being developed based on newly acquired experience of cooperation with large information technology companies. The work contains a description of the existing database system supporting current cooperation and presents the concept for its...
The paper presents the developed middleware dedicated to the industrial robotic system modeling, integration and control. Due to several vendors of industrial robots and industrial equipment which deliver different simulation tools with different communication software, there is a need to integrate several technologies to build unified distributed robotic system. The proposed middleware combined by...
The essential part of the theory of Enterprise Process Control (the EPC theory) is a formal description of the framework EPC system. It is a universal reference model of integrated management and process control systems for all enterprises, regardless of their trade and size. Basic notions of the EPC theory have been presented in the paper. Certain definitions of broadly known terms (e.g. organizational...
In the market economy, the company image is of particular importance. It can be shaped intentionally through marketing activities. This paper presents an example of a big hotel and catering company, which competently makes practical use of company image management. The management board of the company regularly conducts questionnaire surveys among the guests of the hotel and uses the results of these...
The paper presents the concepts and the basic structure of decision support system in the form of an additional layer of an ERP system. Any decision can be interpreted as a response to the properly formulated question that meets the existing constraints. Novel mechanism was introduced to the automatic generation of questions in the form of CLP (Constraint Logic Programming) predicates or MIP (Mixed...
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