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Tytuł:
The field-circuit analysis of the start-up operation of the brushless DC motor
Autorzy:
Knypiński, Ł.
Nowak, L.
Radziuk, K.
Le Menach, Y
Powiązania:
https://bibliotekanauki.pl/articles/97355.pdf
Data publikacji:
2010
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
DC motor
BLDC motors
energy savings
Źródło:
Computer Applications in Electrical Engineering; 2010, 8; 93-104
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Position control of DC motor using fractional order controller
Autorzy:
Ruszewski, A.
Sobolewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/141217.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
position
DC motor
controller
fractional order
Opis:
The paper presents the problem of position control of DC motor with rated voltage 24 V loaded by flywheel. The fractional order PD controller implemented in National Instruments NI ELVIS II programmed in LabView is used for controlling. The simple method for determining stability regions in the controller parameters space is given. Knowledge of these regions permits tuning of the controller and ensures required the phase margin of the system.
Źródło:
Archives of Electrical Engineering; 2013, 62, 3; 505-516
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mathematical model of DC motor for analysis of commutation processes
Autorzy:
Głowacz, Z.
Głowacz, W.
Powiązania:
https://bibliotekanauki.pl/articles/262586.pdf
Data publikacji:
2007
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
mathematical model
DC motor
commutation process
Opis:
The mathematical model of dc motor was created. In model the commutator is approximated by circuit with variable parameters. Extremely different values are assigned to circuit parameters depending on the angular position of the rotor. Model equations were solved using implicit integration method. Commutation processes of dc motor were investigated with the aid of this model. Presented model can be extended and to take into account another phenomena occurring in dc motor.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2007, 13, 2; 65-68
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of commutator DC motor basing on spectral analysis of signals
Autorzy:
Głowacz, Z.
Zdrojewski, A.
Powiązania:
https://bibliotekanauki.pl/articles/262623.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
commutator dc motor
rotor asymmetries
spectral analysis
Opis:
Measurement investigations have been carried out for commutator dc motor with internal asymmetries. Construction of considered motor enables to realize the breaking of one rotor coil and shorting of two groups of rotor coils. Each group contains three rotor coils. The basis of study were signals: current and voltage of field winding, current and voltage of armature winding and velocity of the rotor. The presented in this paper results of spectral analysis of signals create new possibilities for diagnostics of commutator dc motor.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2008, 14, 1; 85-88
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-layer observer as new structure for state estimation in linear systems
Autorzy:
Bernat, J.
Kołota, J.
Superczyńska, P.
Stępień, S.
Powiązania:
https://bibliotekanauki.pl/articles/140374.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Luenberger observer
Multi Observer
electric DC motor
Opis:
A new structure to design observers for linear systems is presented in this work. The key step is the construction of two layers where the first consists of multiple observers and the second connects them providing the weighted estimation state. The main difficulty is to find a new feedback which is responsible for control weights. To define observation law, we rely on multi observers from the first layer. The proposed structure significantly improves the transient characteristics of the observation process, which is shown in illustrative examples.
Źródło:
Archives of Electrical Engineering; 2017, 66, 3; 507-521
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fault diagnostics of DC motor using acoustic signals and MSAF-RATIO30-EXPANDED
Autorzy:
Glowacz, A.
Powiązania:
https://bibliotekanauki.pl/articles/140582.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
acoustic signal
analysis
diagnostic
DC motor
machine
Opis:
An early fault diagnostic method of Direct Current motors was presented in this article. The proposed method used acoustic signals of a motor. A method of feature extraction called MSAF-RATIO30-EXPANDED (method of selection of amplitudes of frequencies – ratio 30% of maximum of amplitude – expanded) was presented and implemented. An analysis of proposed method was carried out for early fault states of a real DC motor. Four following states of the DC motor were measured and analyzed: the healthy DC motor, DC motor with 3 shorted rotor coils, DC motor with 6 shorted rotor coils, DC motor with a broken coil. Measured states were caused by natural degradation of the DC motor. The obtained results of analysis were good. The presented early fault diagnostic method can be used for protection of DC motors.
Źródło:
Archives of Electrical Engineering; 2016, 65, 4; 733-744
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of separately excited DC motor based on analysis and recognition of signals using FFT and Bayes classifier
Autorzy:
Glowacz, W.
Glowacz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/141149.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DC motor
diagnostic investigations
FFT
Bayes classifier
Opis:
In this article results of diagnostic investigations of separately excited DC motor were presented. In diagnostics were applied a Fourier analysis method based on the fast Fourier transform (FFT) and a recognition method using Bayes classifier. In training process a set of the most important frequencies has been determined for which differences of corresponding signals in two states are the largest. Three categories of signals have been recognized in identification process: faultless state, state of the rotor broken one coil and state of the rotor shorted three coils
Źródło:
Archives of Electrical Engineering; 2015, 64, 1; 29-35
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identifying the optimal controller strategy for DC motors
Autorzy:
Qader, M. R.
Powiązania:
https://bibliotekanauki.pl/articles/140815.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
DC Motor
LQR
PID
PI
controller strategy
Opis:
The aim of this study is to design a control strategy for the angular rate (speed) of a DC motor by varying the terminal voltage. This paper describes various designs for the control of direct current (DC) motors. We derive a transfer function for the system and connect it to a controller as feedback, taking the applied voltage as the system input and the angular velocity as the output. Different strategies combining proportional, integral, and derivative controllers along with phase lag compensators and lead integral compensators are investigated alongside the linear quadratic regulator. For each controller transfer function, the step response, root locus, and Bode plot are analysed to ascertain the behaviour of the system, and the results are compared to identify the optimal strategy. It is found that the linear quadratic controller provides the best overall performance in terms of steady-state error, response time, and system stability. The purpose of the study that took place was to design the most appropriate controller for the steadiness of DC motors. Throughout this study, analytical means like tuning methods, loop control, and stability criteria were adopted. The reason for this was to suffice the preconditions and obligations. Furthermore, for the sake of verifying the legitimacy of the controller results, modelling by MATLAB and Simulink was practiced on every controller.
Źródło:
Archives of Electrical Engineering; 2019, 68, 1; 101-114
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Range and acceleration analyze of an electric driven city car with advanced energy storage
Autorzy:
Juda, Z.
Powiązania:
https://bibliotekanauki.pl/articles/242384.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
electric vehicle
DC motor
supercapacitor
vehicle range
simulation
Opis:
For short distance (neighborhood) city transport of people, electric driven vehicle with advanced energy storage and electronic control system could assure fulfill essential requirements. range, acceleration ability and grade ability of electric driven small size city vehicle depend on: total vehicle mass, energy storage type and size, vehicle exploitation conditions (motorway, city traffic). Energy storage type and size optimization and full utilization of regenerative braking system leads to significant amount energy saving. Regenerative braking is particularly important in city traffic, where a lot of acceleration/braking cycles occur. Advanced secondary energy source consist of electrochemical battery and stack of supercapacitors. Using supercapacitors as an additional energy source makes it possible to improve battery life cycle and simultaneously to decrease the exploitation costs of electric vehicle. Short charging and discharging times of supercapacitors give ability to quick accept large amount of energy. In order to cooperate with batteries, a power electronic converter is necessary. Knowledge of vehicle energetic parameters could be obtained by model based simulation than verified by research testing. To estimating the energy consumption, energy recovery, range, acceleration and grade ability, simulation in MATLAB environment has been performed applying special low speed vehicle drive cycle based on ECE-15 driving cycle. The results of simulation are presented in this paper
Źródło:
Journal of KONES; 2009, 16, 2; 209-215
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
DC Motor Fault Analysis with the Use of Acoustic Signals, Coiflet Wavelet Transform, and K-Nearest Neighbor Classifier
Autorzy:
Glowacz, A.
Powiązania:
https://bibliotekanauki.pl/articles/176503.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
acoustic signal
Coiflet wavelet
fault detection
DC motor
Opis:
This paper focuses on testing the monitoring system of the Direct Current motor. This system gives the possibility of diagnosing various types of failures by means of analysis of acoustic signals. The applied method is based on a study of acoustic signals generated by the DC motor. A study plan of the DC motor’s acoustic signal was proposed. Studies were conducted for a faultless DC motor and Direct Current motor with 3 shorted rotor coils. Coiflet wavelet transform and K-Nnearest neighbor classifier with Euclidean distance were used to identify the incipient fault. This approach keeps the motor operating in acceptable condition for a long time and is also inexpensive.
Źródło:
Archives of Acoustics; 2015, 40, 3; 321-327
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ debouncingu na właściwości szybkobieżnych bezszczotkowych silników prądu stałego
The impact of debouncing on the properties of high-speed brushless DC motors
Autorzy:
Fręchowicz, A.
Heyduk, A.
Powiązania:
https://bibliotekanauki.pl/articles/186066.pdf
Data publikacji:
2014
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technik Innowacyjnych EMAG
Tematy:
debouncing
silnik prądu stałego
silniki bezszczotkowe
DC motors
brushless DC motor
Opis:
W ostatnich latach coraz częściej w napędach górniczych wymagających dokładnej regulacji prędkości obrotowej stosuje się bezszczotkowe silniki prądu stałego (BLDC), wzbudzane za pomocą magnesów trwałych umieszczonych w wirniku. W tych silnikach rolę komutatora przejmuje falownik sterowany przez elektroniczne czujniki położenia wału. Zastosowanie maszyn BLDC powoduje powstanie nowych problemów. Jednym z nich jest niepewna praca czujników położenia wału, w których elementami przełączającymi są najczęściej hallotrony. W chwilach komutacji prądu, a także pod wpływem silnych zewnętrznych zakłóceń elektromagnetycznych czujniki mogą wysłać fałszywe impulsy sterujące, wskutek czego pojawiają się błędne przełączenia tranzystorów falownika. Aby napęd mógł pracować poprawnie, należy ograniczyć wpływ niepewności czujników hallotronowych na pracę maszyny. W tym celu stosuje się tzw. procedury debouncingu, pozwalające na przełączenie obwodu dopiero wtedy, kiedy upewnimy się, że wirnik istotnie obrócił się o założony kąt. Wprowadzają one pewne, niewielkie opóźnienie chwili komutacji tranzystorów. W artykule przedstawiono problemy związane z zastosowaniem procedur debouncingu w szybkobieżnych maszynach BLDC dużej mocy.
Brushless DC motors (BLDC) are used more and more frequently used in mining drives which require accurate regulation of rotational speed. These motors are induced by means of permanent magnets placed in the rotor. The role of the commutator is taken over by an inverter which is controlled by electronic shaft position sensors. The use of BLDC generates some problems. One is the uncertain work of shaft position sensors in which the commuting elements are hall generators. During current commutation, and under the influence of strong external magnetic disturbances, the sensors may send false control impulses. As a result of that, there are false commutations of the inverter transistors. In order to have proper operations of the drive, it is necessary to reduce the impact of hall-generators uncertainty on the work of the machine. For this purpose the so called debouncing procedures are used. They allow to commute the circuit no sooner than it is certain that the rotor rotates by the defined angle. These procedures introduce some small delays of the transistors commutation moment. The article features the issues related to the use of debouncing procedures in high-speed high-power brushless motors (BLDC).
Źródło:
Mechanizacja i Automatyzacja Górnictwa; 2014, R. 52, nr 3, 3; 14-20
0208-7448
Pojawia się w:
Mechanizacja i Automatyzacja Górnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamics models of drive systems with DC and AC motors
Autorzy:
Stępniewski, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/411163.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
DC motor
AC motor
dynamics
driver system
theoretical model
motion simulation
Opis:
Mathematical models of two electromechanical systems consisting of a DC motor and an AC motor were built. To determine the moment of active (driving) torque as a function of angular velocity, Kirchhoff voltage equations were used in the system with the DC motor. In the system with the alternating current, equations determining the components of the stator and rotor vectors and the voltage equation were used. Both models include susceptibility and suppression of motion transmission systems. It was assumed that the speed control is carried out according to the preset traffic pattern in the feedback system in relation to position, speed and acceleration. The Runge-Kutta method was used to solve the equations. The author’s own simulation program was written, which allowed to determine the time of displacement, speed and acceleration of the output shaft depending on the resistance of motion and the adopted method of rotational speed control. Calculation examples have been provided. Conclusions and suggestions resulting from the simulation have been formulated.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2018, 7, 1; 137-143
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Single sensor based photovoltaic maximum power point tracking technique for solar water pumping system
Autorzy:
Daoud, A.
Midoun, A.
Powiązania:
https://bibliotekanauki.pl/articles/262763.pdf
Data publikacji:
2008
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie
Tematy:
MPPT
boost converter
rmicrocontroller
DC motor-pump
flow rate
Opis:
The development of photovoltaic (PV) panels has made solar-powered pumps a reality. The pump drivers are usually direct-current (DC) motors which are fed by power electronic converters with maximum power point tracking (MPPT) to extract the whole energy that the PV panels can generate depending on the environmental conditions including irradiation and temperature. The implementation of MPPT algorithm essentially involves sensing both an input current and an input voltage. Understandably, such realization is expensive. In this paper, a solar PV water pumping system based on DC to DC converter as MPPT module is considered. The system consists of a PV array, a DC to DC boost converter and the DC motor coupled to a centrifugal pump. A proposed method is employed to seek the maximum power point using the flow rate obtained from a single sensor. A comparison with conventional hill climbing technique is included in experimental results to prove feasibility of the proposed method.
Źródło:
Electrical Power Quality and Utilisation. Journal; 2008, 14, 2; 69-72
1896-4672
Pojawia się w:
Electrical Power Quality and Utilisation. Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relationship Between Energy and Information
Autorzy:
Górecki, H.
Powiązania:
https://bibliotekanauki.pl/articles/911194.pdf
Data publikacji:
2000
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
entropy of information
energy
stabilization
DC motor
white noise
Opis:
Two ways of speed stabilization of the D.C. motor are considered. One way consists in the use of additional kinetic energy accumulated in a wheel with a large moment of inertia J. The other consists in the use of additional information supplied by a feedback loop with gain K. In both the cases the motor is under the influence of the same white Gaussion noise. These two ways of stabilization are compared under the assumption of the same value of the speed error in the steady state.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2000, 10, 2; 405-411
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
EMC of universal DC motor
Autorzy:
Kaňuch, J.
Višnyi, P.
Powiązania:
https://bibliotekanauki.pl/articles/1372829.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
silnik elektryczny
silnik prądu stałego
EMC
DC motor
electric motor
EMC measurements
Opis:
This document deals with electromagnetic compatibility (EMC) of universal motor operating at AC and DC power supply. Universal motors are used in a variety of applications and can be operated either at AC or DC supply current. The advantages of universal motors are especially high starting torque, very compact design and high running speeds. The drawback consists in the fact that the commutator and arcing brushes create electromagnetic interference (EMI), ozone and noise. This paper presents the results of oscilloscopic measurement of disturbing magnetic field in proximity of a universal motor at various speeds at AC and DC operation mode. The time derivation of the magnetic flux density is converted by an inductive coil to a voltage to be observed by oscilloscope.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2010, 88; 209-215
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 64

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