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Tytuł:
Analysis and effect of static eccentricity fault on performance indicators of a synchronous reluctance motor
Autorzy:
Idoko, Emmanuel
Umoh, Gideon David
Obe, Pauline Ijeoma
Mama, Benjamin Okwudili
Obe, Emeka Simon
Powiązania:
https://bibliotekanauki.pl/articles/27309936.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
degree of eccentricity
faults
finite element method
inductances
static eccentricity
synchronous reluctance motor
winding function
Opis:
Fault diagnosis and condition monitoring of synchronous machines running under load is a key determinant of their lifespan and performance. Faults such as broken rotor bars, bent shafts and bearing issues lead to eccentricity faults. These faults if not monitored may lead to repair, replacement and unforeseen loss of income. Researchers who attempted to investigate this kind of machine stopped at characterizing and deduced ways, types and effects of rotor eccentricity fault on the machine inductances using the winding function method. A modified closed-form analytical model of an eccentric synchronus reluctance motor (SynRM) is developed here taking into cognizance the machine dimensions and winding distribution for the cases of a healthy and unhealthy SynRM. This paper reports the study the SynRM under static rotor eccentricity using the developed analytical model and firming up the model with finite element method (FEM) solutions. These methods are beneficial as they investigated and presented the influence of the degrees of static eccentricity on the machine performance indicators such as speed, torque and the stator current and assess the extent to which the machine performance will deteriorate when running with and without load. The results show that static eccentricity significantly affects the machine’s performance as the degree of eccentricity increases.
Źródło:
Archives of Electrical Engineering; 2023, 72, 3; 829--848
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Armature MMF and electromagnetic performance analysis of dual three-phase 10-pole/24-slot permanent magnet synchronous machine
Autorzy:
Chen, Zhenfei
Xing, Ning
Ma, Hongzhong
Li, Zhixin
Li, Jiayu
Fan, Chenyang
Powiązania:
https://bibliotekanauki.pl/articles/2202550.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
dual three-phase winding
fractional-slot
concentrated winding
permanent magnet synchronous machines (SCW-PMSMs)
MMF harmonic analysis
space harmonics
magnet eddy-current loss (ECL)
SVPWM voltage supply
Opis:
Fractional-slot concentrated-winding permanent magnet synchronous machines (FSCW-PMSMs) have a good prospect of application in the drive system of electric and hybrid electric vehicles. However, the armature magnetomotive force (MMF) of FSCWPMSM contains a large number of space harmonics, which induce large magnet eddycurrent loss (ECL). To solve this problem, a dual three-phase 10-pole and 24-slot winding layout is proposed.MMFharmonic analysis shows that the 1st, 7th and 17th space-harmonic winding factors of the proposed winding can be reduced by 100%, 87% and 87% respectively, compared with a dual three-phase 10-pole and 12-slot winding. Electromagnetic performances of the proposed machine under rated sinusoidal current supply and space vector pulse-width-modulated (SVPWM) voltage supply are investigated based on 2D finite-element analysis. It is shown that the proposed machine can meet the requirement of torque and efficiency in the full speed range. Especially, magnet ECL can be reduced greatly due to the reduction of the 7th and 17th space harmonics.
Źródło:
Archives of Electrical Engineering; 2023, 72, 1; 189--210
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Control of open-end induction motor by multi-objective GA based selective harmonic elimination PWM to reduce zero sequence currents and torque ripples
Autorzy:
Kumar, K. Kalyan
Anuradha, K.
Suryakalvathi, M.
Powiązania:
https://bibliotekanauki.pl/articles/41179745.pdf
Data publikacji:
2023
Wydawca:
Politechnika Warszawska, Instytut Techniki Cieplnej
Tematy:
open-end winding induction machine
zero sequence currents
torque ripple
selective harmonic elimination
triplen harmonics
maszyna indukcyjna
uzwojenie otwarte
tętnienie momentu obrotowego
selektywna eliminacja harmonicznych
potrójne harmoniczne
Opis:
A double inverter powered induction motor with open stator winding has few benefits, including excessive error forbearance functionality, great flexibility and lesser rating of DC input voltage etc. For this Configuration, two types of Modules can be implemented: they are Non-Isolated DC link and Isolated DC link. In these two, Non-Isolated DC link is a good choice due to effective DC-link utilization and ruggedness, which is very beneficial in many applications. However, this module produces more zero sequence currents (Z-SC) by means of common mode (CMMD) voltage, which flows through DC bus. The circulation of Z-SC must be as little as possible since it merely rises the amplitude of currents in all phases. High ripple frequency of currents and torque, in addition results in extra loss, which not only reduces the efficiency, but influences loading ability and quickens the aging of drive. The Triplen harmonics can be defined as harmonics with integer of three times the frequency at fundamental, when they are in Phase in all Phases forms the Z-SC. In this paper, a novel SHE method is chosen to target Triplen harmonics in Single DC Source Module (Non- Isolated) and holding preferred fundamental quantity, which aids in improving the torque handling ability of the motor. In addition, the investigation of dual inverter fed OEW-IM with both common DC source as well as separate DC sources is also explored in the SHE for different number of switching angles and variable Modulation Index (MI) towards the torque ripples and Z-SC reduction given. The foremost challenge related to the SHE method is resolving a set of higher order nonlinear equations with a number of variables. A Multi-objective GA method is provided for that challenge which effects the reduction in Z-SC so that torque ripples will be minimized. Moreover, the novel SHE method reduces the number of harmonics better than the conventional SHE, which further decreases TH-D with decent fundamental quantity. For validation, the essential mathematical formulations and simulation results are presented.
Źródło:
Journal of Power Technologies; 2023, 103, 1; 72-87
1425-1353
Pojawia się w:
Journal of Power Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Induction machine with pole-changing winding for turbomechanisms
Autorzy:
Bobojanov, Makhsud
Powiązania:
https://bibliotekanauki.pl/articles/24202741.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
basic scheme of winding
differential leakage factor
Görges polygone
magnetizing forces
pole-changing winding
pole amplitude modulation
winding factor
Opis:
This paper investigates the possibilities for developing a pole-changing winding with a pole ratio of 3:4 with improved electromagnetic properties. Such a winding can be used in two-speed induction motors for turbo mechanisms. The scheme of the new winding was obtained by using a discretely-specified spatial function method developed at the Tashkent State Technical University. A comparison of the parameters obtained for a similar winding received by the pole amplitude modulation method has been presented. Design of a new motor with a new winding is developed based on the standard induction motor. The paper presents results of laboratory tests, too.
Źródło:
Archives of Electrical Engineering; 2023, 72, 2; 415--426
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of winding and shaft cooling on the thermal characteristics of a traction machine for heavy-duty distribution transport
Autorzy:
Groschup, Benedikt
Butterweck, Daniel
Hameyer, Kay
Powiązania:
https://bibliotekanauki.pl/articles/27309937.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
cooling
thermal design
winding cooling
Opis:
This paper studies the influence of different cooling technologies on the power density of a traction machine for heavy-duty distribution transport. A prototype induction machine is built with a housing cooling jacket, potted end-windings, entire winding cooling, and shaft cooling. Electromagnetic finite element and thermal lumped-parameter models are parameterized and verified using test bench measurements. The influence of each thermal resistance along the heat paths is studied and discussed. The results are used for studying different cooling technologies. The results indicate an improvement of the continuous power density up to 108% using shaft cooling and up to 15.6% using entire winding cooling.
Źródło:
Archives of Electrical Engineering; 2023, 72, 3; 769--784
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Strand wire winding method in a solenoidal coil with limited geometry for good impedance matching
Autorzy:
Kilic, Veli Tayfun
Powiązania:
https://bibliotekanauki.pl/articles/2202556.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
solenoid coil
stranded wire
winding
Opis:
This paper reports a new strand wire winding method in a solenoidal coil with limited geometry that enables good impedance matching. In the proposed method strand wires are wound layer-by-layer on top of each other allowing one to set equivalent inductance and resistance of the coil to desired values while obtaining dense magnetic flux and high current carrying capacity. As a proof-of-concept demonstration, simple model setups were constructed with solenoidal coils composed of copper wire strands wound according to the proposed method, and a plastic pipe. The measurements were repeated with a metal shell placed inside the coil to model a complete heating system. System inductance and resistance were measured at two different frequencies. The results show that with the new winding method it is possible to increase a coil’s turn number and the number of strand layers composed by the coil. Also, adding and removing strand layers in the proposed coil architectures enable inductance and resistance values to decrease and increase, respectively, in a controlled way. To understand changes of system parameters, simulations were also performed. The calculated inductance and resistance values in the simulations agree well with the measurement results and magnetic flux distribution created in the system demonstrates the changes.
Źródło:
Archives of Electrical Engineering; 2023, 72, 1; 239--252
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of ply angle on the burst pressure of composite pressure vessels by filament winding
Autorzy:
Saif, Tamara
Saad, Najim
Al-Zubiedy, Ali
Idzikowski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/31342616.pdf
Data publikacji:
2022
Wydawca:
Politechnika Częstochowska
Tematy:
composite pressure vessels
filament winding angle
burst pressure
kompozytowe zbiorniki ciśnieniowe
kąt nawijania włókna
ciśnienie rozrywające
Opis:
A composite pressure vessel is an important structure in different applications including pipes, pipes under pressure and closed system pipes under high pressure and temperature such as gas pipelines and aircraft structures, because of the characteristics of polymer - a composite used as an alternative to heavy materials such as metal in the various applications, including the construction industry. The current work focuses on the study of strength phase orientation and their properties on the burst pressure strength and other parameters, which are very important in the design and manufacture of these vessels such as the selection of type of strength phase nylon 6, 6 and philosophy of mixing of the type of fiber with matrix material (epoxy). The work also includes the study of the effect of two layer angle ply (0, 90), (55, -55), (75, -75) and implements different material testing to evaluate the toughness and stiffness of these vessels and compare the experimental result with the theoretical result. A filament winding apparatus was designed and executed to manufacture different types of subjects according to these angle of ply nylon fiber. The mechanical tests (tensile test, drop test, pipe stiffness test, hydrostatic pressure test) were used to test the vessel. The results shown that the ply orientation (75, -75) has high (tensile strength, toughness, stiffness, impact and burst pressure) when compared with the results from other ply orientations. This shows that [75, -75] ply orientation is the optimal angle for the vessel. Tensile tests show that (75, -75) ply orientation samples have higher properties in two directions, longitudinal and transverse, when compared with other angles.
Źródło:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym; 2022, 11; 223-233
2299-8535
2544-963X
Pojawia się w:
Budownictwo o Zoptymalizowanym Potencjale Energetycznym
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electromagnetic analysis, efficiency map and thermal analysis of an 80-kW IPM motor with distributed and concentrated winding for electric vehicle applications
Autorzy:
Młot, Adrian
Korkosz, Mariusz
Lechowicz, Andrzej
Podhajecki, Jerzy
Rawicki, Stanisław
Powiązania:
https://bibliotekanauki.pl/articles/2172808.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
AC losses
concentrated winding
distributed winding
motor performance
radial flux permanent magnet motor
slot fill factor
thermal analysis
Opis:
This paper presents a comparison of an AC radial flux interior permanent magnet (IPM) motor with the distributed winding (DW) and concentrated winding (CW). From time to time, manufacturers of electric vehicles change the design of electric motors, such changes may include changing the DW into CW and vice versa. A change to the winding in a radial permanent magnet synchronous motor may lead to a change in motor parameters during motor operation and /or change in the distribution of the magnetic field and thermal circuit of the electrical machine. The electromagnetic analysis, efficiency map, mechanical stress, and thermal analysis of the machine with the DW and CW are presented in this paper. This article describes the advantages and disadvantages of selected stator winding designs and helps understand manufacturers’ designers how the DW and CW play a key role in achieving the designed motor’s operational parameters such as continuous performance. Analyzing the performance of both machines will help identify their advantages and disadvantages with regard to thermal phenomena, magnetic field and operational parameters of the presented IPM prototypes. Both prototypes are based on commonly used topologies such as 12/8 (slot/pole) and 30/8 (slot/pole) IPM motors consisting of magnets arranged in a V-shape. The AC IPM motor was designed for an 80 kW propulsion system to achieve 170 N·m at a base speed of 4 500 rpm. Modern CAD tools are utilized throughout the numerical computations based on 2-D finite element methods. Selected test data are used to verify and validate the accuracy of finite element models.
Źródło:
Archives of Electrical Engineering; 2022, 71, 4; 981--1002
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Improved Matlab/Simulink model of dual three-phase fractional slot and concentrated winding PM motor for EV applied brushless DC drive
Autorzy:
Shchur, Ihor
Mazur, Damian
Makarchuk, Oleksandr
Bilyakovskyy, Ihor
Turkovskyi, Valentyn
Kwiatkowski, Bogdan
Kalandyk, Dawid
Powiązania:
https://bibliotekanauki.pl/articles/2175119.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electric vehicle
EV
dual three-phase motor
DTP motor
BLDC drive
fractional slot concentrated winding PM motor
FEM modeling
self and mutual differential inductances
Matlab/Simulink model
Opis:
The development of electric vehicles (EV) necessitates the search for new solutions for configuring powertrain systems to increase reliability and efficiency. The modularity of power supplies, converters, and electrical machines is one such solution. Among modular electric machines, dual three-phase (DTP) motors are the most common in high-power drives. To simplify low and medium power drives for EVs based on DTP PM motor, it is proposed to use a BLDC drive and machine of the simplest design - with concentrated windings and surface mounted PMs on the rotor. To study and create such drives, an improved mathematical model of DTP PM machine was developed in this work. It is based on the results of 2D FEM modeling of the magnetic field. According to the developed method, the dependences of the self and mutual inductances between all phase windings from the angle of rotor position and loads of different motor modulus were determined. Based on these inductances, the circuit computer model of DTP PM machine was created in the Matlab/Simulink. It has a high simulation speed and a high level of adequacy, which is confirmed by experimental studies with a mock-up sample of the electric drive system.
Źródło:
Archives of Control Sciences; 2022, 32, 4; 677--707
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Non-intrusive current-based fault detection of electro-mechanical actuators with brushed DC motors
Autorzy:
Hanuš, Ondřej
Smid, Radislav
Powiązania:
https://bibliotekanauki.pl/articles/2173890.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Electro-mechanical Actuator
EMA
Fault Detection and Diagnostics
FDD
jam
winding short
Opis:
This paper proposes data-based fault detection methods for an electromechanical actuator (EMA) with a brushed DC motor. The jam and winding short faults are considered in the study as the most prominent EMA faults. The fault detection is based on evaluating the properties of the motor current, considering the basic electromechanical parameters of EMAs. The main advantages are a non-intrusive approach utilising a commonly accessible motor current measurement, simple configurability, and the ability to detect faults under varying operation modes of EMA, including changes of speed, load, or movement profiles. The proposed methods have been evaluated with a custom testing system, and the results have proven the performance of the proposed approach to detect faults under varying operating conditions in industrial applications.
Źródło:
Metrology and Measurement Systems; 2022, 29, 3; 505--523
0860-8229
Pojawia się w:
Metrology and Measurement Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Turbogenerator field pole-to-pole connector in-situ repair
Naprawa na obiekcie połączenia międzybiegunowego wirników turbogeneratorów
Autorzy:
Bialik, Janusz
Ferens, Wojciech
Troncin, Pascal
Powiązania:
https://bibliotekanauki.pl/articles/2142545.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
turbogenerator
wirnik
połączenie międzybiegunowe
naprawa na obiekcie
rotor
pole-to-pole winding connections
repair with rotor in-situ
Opis:
In this article an innovative repair method of the rotor pole-to-pole connectors large turbogenerators with active power from 150 till 490MW, both air and hydrogen cooled, is presented. The pole-to-pole connection is an omega-shaped part of the rotor winding, which connects pole coil 1 with pole coil 2. It is brazed to the most radially inner winding turn of the tangentially outer coil on the Non-Drive End (NDE) of the rotor. There are two pole-to-pole connectors installed in every 2-pole turbogenerator rotor to have a mechanically balanced configuration. This configuration represents from electrical point of view 100% redundancy, i.e one failing pole-to-pole connector is not limiting the operational performance of the turbogenerator.
W artykule przedstawiono nowatorską metodę naprawy połączeń międzybiegunowych wirników dużych turbogeneratorów o mocy czynnej od 150 do 490 MW, chłodzonych powietrzem bądź wodorem. Połączenie międzybiegunowe to część uzwojenia wirnika w kształcie litery omega, która łączy ostatnią cewkę bieguna 1 z ostatnią cewką bieguna 2. Jest ono przylutowane do zwoju położonego najbardziej wewnętrznie promieniowo i stycznie, po przeciwnapędowej stronie wirnika. W każdym dwubiegunowym wirniku turbogeneratora zainstalowane są dwa połączenia międzybiegunowe, które są mechanicznie zrównoważone. Ta konfiguracja zapewnia z elektrycznego punktu widzenia 100% redundancję, tj. jedno uszkodzone złącze biegun-biegun nie ogranicza możliwości wytwórczych turbogeneratora.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2022, 3, 1 (127); 71--76
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wpływ podwojenia liczby faz uzwojenia na wybrane parametry 3-fazowego silnika synchronicznego z magnesami trwałymi, na przykładzie silnika napędu eKIT dla pojazdów elektrycznych
Effect of doubling the number of winding phases on selected parameters of a 3-phase permanent magnet synchronous motor on the example of an eKIT drive motor for electric vehicles
Autorzy:
Rossa, Robert
Bogatyrev, Petr
Powiązania:
https://bibliotekanauki.pl/articles/2142557.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
Tematy:
silnik synchroniczny z magnesami trwałymi
dwugwiazdowe asymetryczne uzwojenie 6-fazowe
permanent magnet synchronous motor
double-star asymmetric 6-phase winding
Opis:
W artykule opisano wpływ podwojenia liczby faz w silniku synchronicznym z magnesami trwałymi na wybrane parametry elektryczne i mechaniczne silnika, na przykładzie silnika napędu eKIT przeznaczonego dla elektrycznie napędzanych pojazdów dostawczych o dopuszczalnej masie całkowitej do 3.5 t i mobilnych maszyn specjalnych. Szczegółowo przedstawiono konstrukcję uzwojenia w wariancie 3-fazowym i sposób przekształcenia 3-fazowego uzwojenia symetrycznego w dwugwiazdowe asymetryczne uzwojenie 6-fazowe. Następnie przedstawiono wyniki obliczeń elektromagnetycznych i porównano wybrane parametry elektryczne i mechaniczne silników w wariantach z 3- i 6-fazowym uzwojeniem twornika.
The article describes the effect of doubling the number of phases in a permanent magnet synchronous motor on selected electrical and mechanical parameters of the motor, based on the example of an eKIT drive motor intended for electrically driven delivery vehicles with a total weight of up to 3.5 t and special mobile machines. The construction of the winding in the 3-phase variant and the method of transforming a 3-phase symmetrical winding into a double-star asymmetric 6-phase winding are presented in detail. Then, the results of electromagnetic calculations are presented and selected electrical and mechanical parameters of motors in variants with 3- and 6- phase armature windings are compared.
Źródło:
Maszyny Elektryczne: zeszyty problemowe; 2022, 3, 1 (127); 221--227
0239-3646
2084-5618
Pojawia się w:
Maszyny Elektryczne: zeszyty problemowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza parametrów silnika z magnesami umieszczonymi w rdzeniu wirnika i z uzwojeniem skupionym do napędu pojazdów elektrycznych
Analysis of the basic parameters of a permanent magnet electric motor with concentrated winding for the electric vehicle
Autorzy:
Lechowicz, Andrzej
Młot, Adrian
Skrobotowicz, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/1857187.pdf
Data publikacji:
2021
Wydawca:
Wydawnictwo Druk-Art
Tematy:
silnik synchroniczny
magnesy trwałe
pojazd elektryczny
uzwojenie skupione
synchronous motor
permanent magnet
electric vehicle
concentrated winding
Opis:
W pracy przedstawiono analizę najważniejszych parametrów użytecznych silnika z magnesami trwałymi i z uzwojeniem skupionym, który zaprojektowano do napędu pojazdów elektrycznych i hybrydowych. Dla zaprojektowanej konstrukcji prototypu silnika synchronicznego z magnesami umieszczonymi wewnątrz rdzenia wirnika (IPMSM) przedstawiono jego najważniejsze zalety. Zaprojektowany silnik o znamionowej mocy 80 kW charakteryzuje się niskimi stratami mocy w magnesach i żelazie oraz momentem zaczepowym nie większym niż 0,98 Nm.
The article presents the results of basic parameters of a permanent magnet motor with concentrated winding in the electric /hybrid vehicle application. The potential benefits resulting from the use an interior permanent magnet synchronous motor (IPMSM) are presented. The 80 kW IPMSM is characterized by low magnet losses and iron losses and the cogging torque is not higher than 0,98 Nm.
Źródło:
Napędy i Sterowanie; 2021, 23, 2; 61-66
1507-7764
Pojawia się w:
Napędy i Sterowanie
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Computational and experimental study of the strength of a composite drive shaft
Autorzy:
Bolshikh, Aleksandr
Powiązania:
https://bibliotekanauki.pl/articles/2203842.pdf
Data publikacji:
2021
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
composite material
drive shaft
filament winding
racing car
materiał kompozytowy
wał napędowy
metoda nawijania
samochód wyścigowy
Opis:
This computational and experimental work is dedicated to the development of promising designs of vehicle drive shafts made of polymer composite materials. This paper analyzes the existing models of drive shafts of “Formula Student” class vehicles and substantiates the use of a carbon-fiber drive shaft with titanium tips. A manufacturing technology for such a product is also presented. Evaluation of structure performance under the action of ultimate loads was carried out by the finite element method. Prototypes of composite drive shafts were produced for further laboratory and field tests. The author proposed a new design of composite drive shafts and a method for calculating the strength of the proposed design; the results were verified by bench laboratory and field tests. From the results of this work, conclusions about the performance of the developed structures and their applicability to racing cars were drawn.
Źródło:
Transport Problems; 2021, 16, 1; 75--86
1896-0596
2300-861X
Pojawia się w:
Transport Problems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhanced Reliability for Winding Machine via New Fault Tolerant Control Based on RST-Backstepping Controller
Autorzy:
Haouari, Fouad
Messekher, Salaheddine
Bali, Noureddine
Tadjine, Mohamed
Boucherit, Mohamed Seghir
Powiązania:
https://bibliotekanauki.pl/articles/1955988.pdf
Data publikacji:
2021
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
winding machine
fault tolerant control
backstepping control
RST control
Opis:
Due to the external disturbances, model uncertainties, strong coupling, and occurred faults, the winding machine presents a great control challenge. In order to deal with these problems, this paper presents the formulation of a novel scheme of fault tolerant control (FTC) for three-motor web-winding systems; it is concerned with the nonlinear robust backstepping control based on the combination of RST and backstepping controllers where the process is modelled by a nonlinear model. The main contribution of the paper is that the approach developed here summarises the performance of RST and backstepping controllers in order to design a robust controller capable of eliminating external disturbances and sensor faults affecting the system. The stability of the whole system is proven using the Lyapunov theory. Finally, analysis in comparison with the conventional backstepping controller and simulations in the MATLAB environment are accomplished to confirm the efficiency of the proposed method.
Źródło:
Power Electronics and Drives; 2021, 6, 41; 229-241
2451-0262
2543-4292
Pojawia się w:
Power Electronics and Drives
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 122

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