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A tensor product (TP) model has an infinite number of alternatives. These variants can be readily derived by the TP model transformation that can variate the number of fuzzy rules, the number of antecedent and consequent sets and, further, the shape of the antecedent fuzzy sets. The related literature has quite deep analysis that modifying these features of a TP model has a crucial role in further design. The latest variants of the TP model transformation, emerged about a year ago, are capable of variating the input space of a TP model. The goal of this paper is to analyse this recently emerged new feature through the example of the gantry crane state space model.
Miklós Kuczmann. Study of tensor product model alternatives. Asian Journal of Control 2020, 23, 1249 -1261.
AMA StyleMiklós Kuczmann. Study of tensor product model alternatives. Asian Journal of Control. 2020; 23 (3):1249-1261.
Chicago/Turabian StyleMiklós Kuczmann. 2020. "Study of tensor product model alternatives." Asian Journal of Control 23, no. 3: 1249-1261.
The paper demonstrates a tensor product (TP) model transformation‐based framework for an induction machine (IM). The state space model of an IM is highly nonlinear, thus the Takagi–Sugeno (TS) fuzzy model‐based quasi‐linear parameter‐varying (qLPV) representation can be a good alternative approach of machines modeling. The paper presents the basics of IM state space modeling, how the TP transformation can be applied in details. The control of IM is always a pivotal point; hence, options of feedback control are discussed. The main goal of this paper is to present the whole process of IM TP transformation‐based modeling including a control system.
Zoltán Németh; Miklós Kuczmann. Tensor product transformation‐based modeling of an induction machine. Asian Journal of Control 2020, 23, 1280 -1289.
AMA StyleZoltán Németh, Miklós Kuczmann. Tensor product transformation‐based modeling of an induction machine. Asian Journal of Control. 2020; 23 (3):1280-1289.
Chicago/Turabian StyleZoltán Németh; Miklós Kuczmann. 2020. "Tensor product transformation‐based modeling of an induction machine." Asian Journal of Control 23, no. 3: 1280-1289.
This paper presents a design procedure of a switched-mode power converter, the well-known synchronous buck converter: the calculating method, and how to choose the parts of the converter are presented in detail, like the inductor, the capacitor and the semiconductors as well as the design of the state feedback. During the design process the efficiency and the high switching frequency are very important: the switching semiconductors are Gallium Nitride based. Then, a linear-quadratic regulator is designed and applied to the particular case of a buck converter.
Miklos Csizmadia; Miklos Kuczmann. Design of LQR controller for GaN based Buck converter. Pollack Periodica 2020, 15, 37 -48.
AMA StyleMiklos Csizmadia, Miklos Kuczmann. Design of LQR controller for GaN based Buck converter. Pollack Periodica. 2020; 15 (2):37-48.
Chicago/Turabian StyleMiklos Csizmadia; Miklos Kuczmann. 2020. "Design of LQR controller for GaN based Buck converter." Pollack Periodica 15, no. 2: 37-48.
The paper discusses the theoretical background of the state space modeling of induction machines. The main goal is to present the necessary equations of the induction machine and the topic of the state space modeling. Although the induction machine is a highly non-linear system, LPV/qLPV model can be formulated from these equations.
Zoltán Németh; Miklós Kuczmann. State space modeling theory of induction machines. Pollack Periodica 2020, 15, 124 -135.
AMA StyleZoltán Németh, Miklós Kuczmann. State space modeling theory of induction machines. Pollack Periodica. 2020; 15 (1):124-135.
Chicago/Turabian StyleZoltán Németh; Miklós Kuczmann. 2020. "State space modeling theory of induction machines." Pollack Periodica 15, no. 1: 124-135.
The survey shows the detailed PID controller design how to stabilize the inclination angle as well as the horizontal movement of an inverted pendulum on a cart system step by step. Pendulum model is based on Euler-Lagrange modeling, and the nonlinear state space model is linearized in the unstable upward position. Controller design is performed by applying the transfer function description. The pendulum has been inserted into a virtual reality laboratory, which is suitable to use in model based control teaching.
Miklós Kuczmann. Comprehensive Survey of PID Controller Design for the Inverted Pendulum. Acta Technica Jaurinensis 2019, 12, 55 -81.
AMA StyleMiklós Kuczmann. Comprehensive Survey of PID Controller Design for the Inverted Pendulum. Acta Technica Jaurinensis. 2019; 12 (1):55-81.
Chicago/Turabian StyleMiklós Kuczmann. 2019. "Comprehensive Survey of PID Controller Design for the Inverted Pendulum." Acta Technica Jaurinensis 12, no. 1: 55-81.
Gergely Friedl; Miklos Kuczmann. Measurement and simulation of magnetic flux density, a comparative study. Pollack Periodica 2014, 9, 133 -144.
AMA StyleGergely Friedl, Miklos Kuczmann. Measurement and simulation of magnetic flux density, a comparative study. Pollack Periodica. 2014; 9 (1):133-144.
Chicago/Turabian StyleGergely Friedl; Miklos Kuczmann. 2014. "Measurement and simulation of magnetic flux density, a comparative study." Pollack Periodica 9, no. 1: 133-144.
The numerical analysis or design of an arrangement, which require electromagnetic field calculation, can be characterized by the electric and magnetic field intensities and flux densities. For determination of these field quantities in the electromagnetic field, one method is to find the solution of the partial differential equations of the field quantities under prescribed boundary conditions obtained from Maxwell’s equations. The Finite Element Method (FEM) is a possible technique to solve partial differential equations, which is based on the weak form of the weighted residual method. The paper presents some potential formulations, which can be used for solving static magnetic field problems and eddy current field problems with the help of FEM. Some examples are also presented at the second part of the paper
Miklos Kuczmann. Nodal and vector finite elements in static and eddy current field problems. Pollack Periodica 2008, 3, 85 -96.
AMA StyleMiklos Kuczmann. Nodal and vector finite elements in static and eddy current field problems. Pollack Periodica. 2008; 3 (2):85-96.
Chicago/Turabian StyleMiklos Kuczmann. 2008. "Nodal and vector finite elements in static and eddy current field problems." Pollack Periodica 3, no. 2: 85-96.
The paper deals with an eddy current field problem as a case study. The aim is to find the solution of the problem by the help of the Finite Element Method (FEM), and the T, Φ, Φ potential formulation taking the nonlinearity of the material into account. The effect of nonlinearity has been approximated with an inverse tangent type analytical model. The nonlinearity has been handled by the polarization method coupled with the Fixed-point iteration technique
Dániel Marcsa; Miklos Kuczmann. Eddy current analysis with nonlinearity. Pollack Periodica 2008, 3, 97 -109.
AMA StyleDániel Marcsa, Miklos Kuczmann. Eddy current analysis with nonlinearity. Pollack Periodica. 2008; 3 (2):97-109.
Chicago/Turabian StyleDániel Marcsa; Miklos Kuczmann. 2008. "Eddy current analysis with nonlinearity." Pollack Periodica 3, no. 2: 97-109.
The paper deals with the numerical analysis of a vector hysteresis measurement system, which is now under construction. The measurement set up consists of an induction motor whose rotor has been removed, and its windings have been replaced to a special two phases one, which can generate a homogeneous magnetic field inside the motor. A round shaped specimen can be inserted into the arrangement. The two orthogonal components of the magnetic field intensity and of the magnetic flux density vectors can be measured by H -coils and B -coils, respectively. The Finite Element Method (FEM) with the T, Φ-Φ potential formulation has been applied in the simulations. The vector hysteresis property of the specimen has been approximated by the isotropic vector Preisach model, finally the nonlinear problem has been solved by the convergent fixed point technique. The aim of the present work is to focus on the design aspects of this kind of measurement system
Miklos Kuczmann. Design of 2D rrsst system by FEM withT, Φ-Φpotential formulation. Pollack Periodica 2008, 3, 67 -80.
AMA StyleMiklos Kuczmann. Design of 2D rrsst system by FEM withT, Φ-Φpotential formulation. Pollack Periodica. 2008; 3 (1):67-80.
Chicago/Turabian StyleMiklos Kuczmann. 2008. "Design of 2D rrsst system by FEM withT, Φ-Φpotential formulation." Pollack Periodica 3, no. 1: 67-80.
The aim of the present paper is to show a simple, but well applicable solution to generate arbitrary waveform of magnetic flux density in scalar hysteresis measurements. The paper deals with a possible realization of eliminating the effect of measurement noise as well. First, the measured signals have been transformed into the frequency domain, and after applying digital filter, the spectrum of the filtered signals have been transformed back to the time domain. The proposed technique results in an accurate noise removal algorithm. The paper illustrates a fast controlling algorithm applying the inverse of the actually measured hysteresis loop, and another proportional one to measure any distorted flux pattern. Developing the mentioned algorithms aims the controlling of a more complicated phenomenon, i.e. measuring the vector hysteresis characteristics
Miklos Kuczmann. Arbitrary flux waveform generation in scalar hysteresis measurement. Pollack Periodica 2007, 2, 3 -14.
AMA StyleMiklos Kuczmann. Arbitrary flux waveform generation in scalar hysteresis measurement. Pollack Periodica. 2007; 2 (3):3-14.
Chicago/Turabian StyleMiklos Kuczmann. 2007. "Arbitrary flux waveform generation in scalar hysteresis measurement." Pollack Periodica 2, no. 3: 3-14.
The paper deals with a possible realization of eliminating the effect of noise in scalar hysteresis measurements. The measured signals have been transformed into the frequency domain, and, after applying digital filter, the spectrums of the filtered signals have been transformed back to the time domain. The proposed technique results in an accurate noise-removal algorithm. The paper illustrates a fast controlling algorithm applying the inverse of the actually measured hysteresis loop, and another proportional one to measure distorted flux pattern. By developing the mentioned algorithms, it aims at the controlling of a more complicated phenomena, i.e. measuring the vector hysteresis characteristics.
Miklós Kuczmann. Fourier transform and controlling of flux in scalar hysteresis measurement. Physica B: Condensed Matter 2007, 403, 410 -413.
AMA StyleMiklós Kuczmann. Fourier transform and controlling of flux in scalar hysteresis measurement. Physica B: Condensed Matter. 2007; 403 (2-3):410-413.
Chicago/Turabian StyleMiklós Kuczmann. 2007. "Fourier transform and controlling of flux in scalar hysteresis measurement." Physica B: Condensed Matter 403, no. 2-3: 410-413.
The paper deals with the numerical analysis of a rotational single sheet tester with round-shaped specimen (RRSST) which is now under construction. The measurement setup consists of an induction motor the rotor of which has been removed, and its windings have been replaced to a special two phase one which can generate homogeneous magnetic field inside the motor. The two orthogonal components of the magnetic field intensity and of the magnetic flux density vectors can be measured by H-coils and B-coils, respectively. The Finite Element Method (FEM) with the T, Φ–Φ potential formulation has been applied in the simulations. The vector hysteresis property of the specimen has been approximated by the vector Preisach model. Finally, the nonlinear problem has been solved by the fixed-point technique. The aim of the present work is to focus on the design aspects of this kind of measurement system.
Miklós Kuczmann. Simulation of a vector hysteresis measurement system taking hysteresis into account by the vector Preisach model. Physica B: Condensed Matter 2007, 403, 433 -436.
AMA StyleMiklós Kuczmann. Simulation of a vector hysteresis measurement system taking hysteresis into account by the vector Preisach model. Physica B: Condensed Matter. 2007; 403 (2-3):433-436.
Chicago/Turabian StyleMiklós Kuczmann. 2007. "Simulation of a vector hysteresis measurement system taking hysteresis into account by the vector Preisach model." Physica B: Condensed Matter 403, no. 2-3: 433-436.
A computer controlled measurement system based on National Instruments Data Acquisiton card and National Insturments LabVIEW software package has been built. First, the hysteresis characteristics of the tested specimen have been simulated by Jiles-Atherton model, and simulated measurements have been performed using LabVIEW functions. This work is a preliminary study of LabVIEW and the measurement of hysteresis. The main goal is to control the magnetic flux density measured on a toroidal shaped core with a feedback controller. In this paper, the developed procedure, which is able to measure the hysteresis characteristics applying analogue and digital integrators, and to control the waveform of magnetic flux density determined from the voltage induced in the secondary coil wound on the toroidal shaped core is presented. The experience proves that the developed controller is stable and robust. This work is an initial step of the vector hysteresis measurement system
Zoltán Pólik; Miklos Kuczmann. Measurement and control of scalar hysteresis characteristics. Pollack Periodica 2007, 2, 27 -37.
AMA StyleZoltán Pólik, Miklos Kuczmann. Measurement and control of scalar hysteresis characteristics. Pollack Periodica. 2007; 2 (2):27-37.
Chicago/Turabian StyleZoltán Pólik; Miklos Kuczmann. 2007. "Measurement and control of scalar hysteresis characteristics." Pollack Periodica 2, no. 2: 27-37.
This paper deals with the numerical analysis of a vector hysteresis measurement system, which is under construction in the laboratory. The aim is to build up a single sheet tester with round shaped specimen. The goal of simulations is to find out the main features of the measurement system. The 3D finite element method (FEM) with tetrahedral mesh developed in the laboratory has been applied for investigations of the nonlinear eddy current field problem. The characteristic of the magnetic material has been taken into account by the isotropic vector Preisach model. The nonlinearity has been handled by the polarization method and the nonlinear system of equations has been solved by the fixed-point technique. The first results are presented in this work
Miklos Kuczmann. Numerical analysis of a 2D vector hysteresis measurement system. Pollack Periodica 2007, 2, 17 -26.
AMA StyleMiklos Kuczmann. Numerical analysis of a 2D vector hysteresis measurement system. Pollack Periodica. 2007; 2 (1):17-26.
Chicago/Turabian StyleMiklos Kuczmann. 2007. "Numerical analysis of a 2D vector hysteresis measurement system." Pollack Periodica 2, no. 1: 17-26.
A nondestructive testing (NDT) equipment has been fabricated. The description of the measurement set-up with some measured crack signals applying a Hall-type sensor, furthermore, the T,Ψ–Ψ potential formulation of the nonlinear eddy current field problem in the time domain can be found in this paper. The hysteresis characteristic of the material has been simulated by the previously developed neural network (NN) based isotropic vector hysteresis model. The nonlinear system of equations has been solved by the fixed-point iteration scheme via the polarization method. Comparisons between the results of the 3D simulations and the measurements are also presented.
Miklós Kuczmann; Amália Iványi. Nonlinear simulation of a nondestructive testing measurement system. Physica B: Condensed Matter 2005, 372, 373 -377.
AMA StyleMiklós Kuczmann, Amália Iványi. Nonlinear simulation of a nondestructive testing measurement system. Physica B: Condensed Matter. 2005; 372 (1-2):373-377.
Chicago/Turabian StyleMiklós Kuczmann; Amália Iványi. 2005. "Nonlinear simulation of a nondestructive testing measurement system." Physica B: Condensed Matter 372, no. 1-2: 373-377.