Now showing items 1-20 of 78

    • 3D Flexible Package Formation using Laser Micromachining 

      Berényi, Richárd; Illyefalvi-Vitéz, Zsolt (Budapest University of Technology and Economics, 2008)
      A newly designed three dimensional (3-D) flexible circuit as a package with five IC chips has been established, and the prototype of the 3-D package using laser micromachining has been successfully demonstrated. Fabrication ...
    • 3SC Control for high efficiency grid connected photovoltaic converters 

      Balogh, Attila; Varjasi, István (Budapest University of Technology and Economics, 2009)
      Nowadays there are several grid connected converters in the grid system. These grid connected converters are generally the converters of renewable energy sources, industrial four quadrant drives and other converters with ...
    • A Critique of Some Classical Theories of Decisions Under Uncertainty 

      Pataki, Béla (Budapest University of Technology and Economics, 1996)
      The present article describes and examines the orthodox types of uncertainty and shows that they are inadmlissibly oversimplified. Real decision situations cannot: be classified into the three classes of the orthodox rnodel. ...
    • A Mixture of Distributions Background Model for Traffic Video Surveillance 

      Bécsi, Tamás; Tamás PÉTER (Budapest University of Technology and Economics, 2006)
      Video surveillance gathers more and more ground in the area of traffic measurement. Such computer vision applications use a static camera and some kinds of a detection algorithm for identifying moving objects. Background ...
    • A Model Predictive Navigation Approach Considering Mobile Robot Shape and Dynamics 

      Kiss, Domokos; Tevesz, Gábor (Budapest University of Technology and Economics, 2012)
      Most mobile robot navigation approaches assume the robot being point-like or consider only its bounding circle while looking for a collision-free path to a given goal position. A well-known method called the Dynamic Window ...
    • A nonlinear observer for flexible joint robots 

      Gyurkovics, Éva; Svirko D (Budapest University of Technology and Economics, 2002)
      This paper presents the design of a kind of semiglobal nonlinear observers for flexible joint robots which needs the measurements of the positions of each motor rotor and link. For the proposed observer, the error equation ...
    • A semi-empirical model for characterisation of flow coefficient for pneumatic solenoid valves 

      Szente, Viktor; Vad, János (Budapest University of Technology and Economics, 2003)
      A semi-empirical model has been elaborated for analyzing and predicting the flow characteristics of small electro-pneumatic (EP) valves within a wide range of pressure ratio. As a basis for characterization of flow ...
    • Analyses of the grid resistance measurements of an operating transformer station 

      Ladányi, József; Varjú, György (Budapest University of Technology and Economics, 2009)
      This paper presents a non-conventionally installed HV/MV underground substation from the point of view grid resistance. The effects of the infeed high voltage (HV) cables and the connected medium voltage (MV) distribution ...
    • Analysis of the Interlaminar Crack Initiation in Mixed-mode I+II Composite Fracture Specimens 

      Szekrényes, András; Uj, József (Budapest University of Technology and Economics, 2003)
      The interlaminar crack initiation in mixed-mode specimens was investigated through two- and three-dimensional finite element models. Elastic analysis was conducted to understand the crack initiation in glass-fibre/vinylester ...
    • Analytical and simulation comparison of sinusoidal and resistive modulation strategies for network-friendly three-phase grid-connected inverters 

      Balázs, Gergely György; Schmidt, István; M. Horváth (Budapest University of Technology and Economics, 2010)
      The growing numbers of consumers distort AC networks with harmonics. Therefore suppression of the network pollution should be considered. This problem can be solved by using ``network-friendly´´ converters. In our study ...
    • Application of prestressed composite beams in fracture mechanics 

      Szekrényes, András (Budapest University of Technology and Economics, 2007)
      This work presents the mixed-mode I/II/III version of the prestressed end-notched flexure system for the general delamination characterization of composite materials. The novel fracture mechanical configuration combines ...
    • Approximate Interlaminar Fracture Envelopes for Unidirectional E-glass/polyester Composite 

      Szekrényes, András; Uj, József (Budapest University of Technology and Economics, 2005)
      In this paper an experimental study is performed in order to determine an approximate interlaminarfracture envelope of a unidirectional E-glass polyester composite. First, the pure mode-I fracturetoughness is determined ...
    • Aspect-Oriented Modelling and Analysis of Information Systems 

      Majzik, István; P Domokos (Budapest University of Technology and Economics, 2007)
      In this paper we introduce an approach of aspect-oriented modelling and analysis of information systems. First we give an overview of the concepts of Aspect Oriented Programming and provide an outlook to model aspect-oriented ...
    • Backstepping Based Control Design with State Estimation and Path Tracking to an Indoor Quadrotor Helicopter 

      Regula, Gergely; Lantos, Béla (Budapest University of Technology and Economics, 2010)
      The article focuses on different aspects (both theoretical and practical) of the development of the control algorithm of a quadrotor helicopter starting from the modelling phase. A new control algorithm is elaborated and ...
    • Basins of attraction in a harmonically excited spherical bubble model 

      Hegedűs, Ferenc; Kullmann, László (Budapest University of Technology and Economics, 2012)
      Basins of the periodic attractors of a harmonically excited single spherical gas/vapour bubble were examined numerically. As cavitation occurs in the low pressure level regions in engineering applications, the ambient ...
    • Beyond the Limits of Kinematics in Planning keyframed Biped Locomotion 

      Juhász, Tamás; Urbancsek, Tamás (Budapest University of Technology and Economics, 2010)
      Keyframed motion planning is a technique that specifies a robot motion by its joint variable samples in discrete time-steps. In this paper, we aim to provide an off-line (i.e. non real-time) dynamic motion optimizing method ...
    • Cadre Rotation 

      Szakadát, István (Budapest University of Technology and Economics, 1994)
      The communist political systems had a special and unique character: the nomenklatura system. Every party committee had a document called 'cadre jurisdictional list' containing a set of positions of different organisations ...
    • Circumstances affecting the protection against electrode potential rise (EPR) 

      Ladányi, József; Varjú, György (Budapest University of Technology and Economics, 2009)
      In this paper the grid resistance of substations with different earth electrode and soil structures is investigated by simulation studies with the use of CDEGS (Current Distribution, Electromagnetic Fields, Grounding and ...
    • Combining Description Logics and Object Oriented Models in an Information Framework 

      Lukácsy, Gergely; Szeredi, Péter (Budapest University of Technology and Economics, 2009)
      We present an information integration system called SINTAGMA which supports the semantic integration of heterogeneous information sources using a meta data driven approach. The main idea of SINTAGMA is to build a so called ...
    • Communication Time Estimation in High Level Synthesis 

      Pilászy, György; Rácz, György; Arató, Péter (Budapest University of Technology and Economics, 2013)
      The high level synthesis (HLS) tools may result in a multiprocessing structure, where the time demand of the interchip data transfer (briefly the communication) between the processing units (hardware or software) is ...