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Subotica, Serbia

Retfalvi A.,Subotica Technology
Acta Polytechnica Hungarica | Year: 2015

Modular fixtures are usually built from standard elements that can be found in the modular element set of a certain manufacturer. But in some cases the user besides using these elements modifies some semi-finished elements that can also be found in the modular element set, or even the user produces some brand new elements. The motivation behind this can be to simplify the fixture, or to make the locating or clamping of a workpiece possible or more precise. This paper presents the methods of automatic generation, and if required, automatic modification of such new or semi-finished elements. © 2015, Budapest Tech Polytechnical Institution. All Rights Reserved. Source

Kecskes I.,Applied DSP | Odry P.,Subotica Technology
LINDI 2012 - 4th IEEE International Symposium on Logistics and Industrial Informatics, Proceedings | Year: 2012

The dynamic model calculates the forces and electric activities that appear during the movement of the robot. The article [1] demonstrates a full kinematic model of a four-wheeled robot car which we have expanded with a minimal dynamic model in this work. Fuzzy route control was applied, because it was more customizable than the simple PID control. In the foreseen task, the robot must reach a target point by some predefined specific requirements. We performed a comparison between the P route controller solution in article [2] and our Fuzzy controller for a case. Fuzzy logic, one of the most suitable soft computing methods which can represent the knowledge base of the routing requirement [3]. We developed fitness function evaluation of driving, for which the kinematic and dynamic characteristics are required. © 2012 IEEE. Source

Attila R.,Subotica Technology | Stampfer M.,Unuversity of Pecs | Imre S.,Budapest University of Technology and Economics
Procedia CIRP | Year: 2013

By automating the tasks of the fixture design and configuration we can save considerable time, and spare the process engineer from a tiresome work. In this paper a system is introduced that gives us recommendations on the number and the order of the needed setups, and proposals on the appropriate fixtures needed at machining a given workpiece. The input data are the CAD model of the workpiece saved in IGES format, and the technological requirements. The output data are the CAD models of the needed fixtures. © 2013 The Authors. Source

Cisar P.,Telekom Srbija | Cisar S.M.,Subotica Technology
Acta Polytechnica Hungarica | Year: 2011

Many intrusions which attempt to compromise the security of computer and network systems manifest themselves in changes in the intensity of events. Because of the ability of exponentially weighted moving average (EWMA) statistics to monitor the rate of occurrences of events based on their intensity, this technique is appropriate for implementation in control limits based algorithms. The research has shown that the usual application of this algorithm on computer network traffic, as applied in industrial processes, does not provide acceptable results. The paper also gives a review of possible optimization methods. Source

Miklos P.,Subotica Technology
SISY 2014 - IEEE 12th International Symposium on Intelligent Systems and Informatics, Proceedings | Year: 2014

In this paper binary matrices are reconstructed from two orthogonal projections. In the reconstruction process particle swarm optimization is used. Since most of the reconstruction problems are NP-hard, the use of a global optimization process gave promising results. The task is to adjust the particle swarm algorithm to the problem of the reconstruction of binary matrices. The main focus is on the reconstruction of hv-convex matrices which consist of either one or more connected components. At the end of the paper the results are shown and the appropriate conclusions are drawn. © 2014 IEEE. Source

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