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Tytuł:
A fault estimation and fault-tolerant control based sliding mode observer for LPV descriptor systems with time delay
Autorzy:
Hamdi, Habib
Rodrigues, Mickael
Rabaoui, Bouali
Benhadj Braiek, Naceur
Powiązania:
https://bibliotekanauki.pl/articles/1838208.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
fault estimation
fault-tolerant control
LPV descriptor system
sliding mode observer
time delay
LMIs
linear matrix inequalities
estymacja błędu
sterowanie odporne na uszkodzenia
sterowanie ślizgowe
liniowa nierówność macierzowa
Opis:
This paper considers the problem of fault-tolerant control (FTC) and fault reconstruction of actuator faults for linear parameter varying (LPV) descriptor systems with time delay. A polytopic sliding mode observer (PSMO) is synthesized to achieve simultaneous reconstruction of LPV polytopic descriptor system states and actuator faults. Exploiting the reconstructed actuator faults and state estimates, a fault-tolerant controller is designed to compensate the impact of actuator faults on system performance by stabilizing the closed-loop LPV delayed descriptor system. Besides, the controller and PSMO gains are obtained throughout the resolution of linear matrix inequalities (LMIs) using convex optimization techniques. The developed PSMO could force the output estimation error to converge to zero in a finite time when the actuators faults are bounded through the reinjection of the output estimation error via a nonlinear switching term. Simulation results applied to a given numerical system are presented to highlight the superiority and effectiveness of the proposed approach.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 2; 247-258
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A fault monitoring method for wind power generation system based on sliding mode observer
Autorzy:
Yu, Wenxin
Huang, Shao Dao
Jiang, Dan
Powiązania:
https://bibliotekanauki.pl/articles/141570.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
double-fed induction generator (DFIG)
sliding model observer (SMO)
stator voltage-oriented
Opis:
In this paper, a rotor current fault monitoring method is proposed based on a sliding mode observer. Firstly, the state-space model of the Double-Fed Induction Generator (DFIG) is constructed by vector transformation. Meanwhile, the stator voltage orientation vector control method is applied to decouple a stator and rotor currents, so as to obtain the correlation between the stator and rotor current. Furthermore, the mathematical model of stator voltage orientation is obtained. Then a state sliding mode observer (SMO) is established for the output current of the rotor of the DFIG. The stability and reachability of the system in a limited time is proved. Finally, the system state is determined by the residuals of the measured and estimated rotor currents. The simulation results show that the method proposed in this paper can effectively monitor the status: a normal state, voltage drop faults, short-circuit faults between windings, and rotor current sensor faults which have the advantages of fast response, high stability.
Źródło:
Archives of Electrical Engineering; 2020, 69, 3; 625-643
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A fault tolerant direct control allocation scheme with integral sliding modes
Autorzy:
Hamayun, M. T.
Edwards, C.
Alwi, H.
Bajodah, A.
Powiązania:
https://bibliotekanauki.pl/articles/330832.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
fault tolerant control
integral sliding mode control
linear matrix inequalities
sterowanie tolerujące uszkodzenia
sterowanie ślizgowe
liniowe nierówności macierzowe
Opis:
In this paper, integral sliding mode control ideas are combined with direct control allocation in order to create a fault tolerant control scheme. Traditional integral sliding mode control can directly handle actuator faults; however, it cannot do so with actuator failures. Therefore, a mechanism needs to be adopted to distribute the control effort amongst the remaining functioning actuators in cases of faults or failures, so that an acceptable level of closed-loop performance can be retained. This paper considers the possibility of introducing fault tolerance even if fault or failure information is not provided to the control strategy. To demonstrate the efficacy of the proposed scheme, a high fidelity nonlinear model of a large civil aircraft is considered in the simulations in the presence of wind, gusts and sensor noise.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2015, 25, 1; 93-102
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A hybrid active fault-tolerant control scheme for wind energy conversion system based on permanent magnet synchronous generator
Autorzy:
Tahri, A.
Hassaine, S.
Moreau, S.
Powiązania:
https://bibliotekanauki.pl/articles/140788.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
wind energy conversion system
active fault-tolerant control
permanent magnet synchronous generator
sensor fault diagnosis
sliding mode observer
Opis:
Wind energy has achieved prominence in renewable energy production. There- fore, it is necessary to develop a diagnosis system and fault-tolerant control to protect the system and to prevent unscheduled shutdowns. The presented study aims to provide an experimental analysis of a speed sensor fault by hybrid active fault-tolerant control (AFTC) for a wind energy conversion system (WECS) based on a permanent magnet synchronous generator (PMSG). The hybrid AFTC switches between a traditional controller based on proportional integral (PI) controllers under normal conditions and a robust backstepping controller system without a speed sensor to avoid any deterioration caused by the sensor fault. A sliding mode observer is used to estimate the PMSG rotor position. The proposed controller architecture can be designed for performance and robustness separately. Finally, the proposed methodwas successfully tested in an experimental set up using a dSPACE 1104 platform. In this experimental system, the wind turbine with a generator connection via a mechanical gear is emulated by a PMSM engine with controled speed through a voltage inverter. The obtained experimental results show clearly that the proposed method is able to guarantee service production continuity for the WECS in adequate transition.
Źródło:
Archives of Electrical Engineering; 2018, 67, 3; 485--497
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new 4-D hyperchaotic four-wing system, its bifurcation analysis, complete synchronization and circuit simulation
Autorzy:
Vaidyanathan, Sundarapandian
Benkouider, Khaled
Sambas, Aceng
Safaan, Samy Abdelwahab
Powiązania:
https://bibliotekanauki.pl/articles/2175110.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
multistability
Hyperchaos
four-wing systems
hyperchaotic systems
synchronization
sliding mode control
circuit design
Opis:
In this work, we modify the dynamics of 3-D four-wing Li chaotic system (Li et al. 2015) by introducing a feedback controller and obtain a new 4-D hyperchaotic four-wing system with complex properties. We show that the new hyperchaotic four-wing system have three saddle-foci balance points, which are unstable. We carry out a detailed bifurcation analysis for the new hyperchaotic four-wing system and show that the hyperchaotic four-wing system has multistability and coexisting attractors. Using integral sliding mode control, we derive new results for the master-slave synchronization of hyperchaotic four-wing systems. Finally, we design an electronic circuit using MultiSim for real implementation of the new hyperchaotic four-wing system.
Źródło:
Archives of Control Sciences; 2022, 32, 3; 507--534
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new 4-D hyperchaotic system with no equilibrium, its multistability, offset boosting and circuit simulation
Autorzy:
Vaidyanathan, Sundarapandian
Moroz, Irene M.
Sambas, Aceng
Powiązania:
https://bibliotekanauki.pl/articles/229944.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chaos
chaotic systems
hidden attractors
sliding mode control
circuit design
synchronization
Opis:
A new 4-D dynamical system with hyperchaos is reported in this work. It is shown that the proposed nonlinear dynamical system with hyperchaos has no equilibrium point. Hence, the new dynamical system exhibits hidden hyperchaotic attractor. An in-depth dynamic analysis of the new hyperchaotic system is carried out with bifurcation transition diagrams, multistability analysis, period-doubling bubbles and offset boosting analysis. Using Integral Sliding Mode Control (ISMC), global hyperchaos synchronization results of the new hyperchaotic system are described in detail. Furthermore, an electronic circuit realization of the new hyperchaotic system has been simulated in MultiSim software version 13.0 and the results of which are in good agreement with the numerical simulations using MATLAB.
Źródło:
Archives of Control Sciences; 2020, 30, 3; 575-597
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new fuzzy design for switching gain adaptation of sliding mode controller for a wind energy conversion system using a doubly fed induction generator
Autorzy:
Horch, Mohamed
Chemidi, Abdelkarim
Baghli, Lotfi
Kadi, Sara
Powiązania:
https://bibliotekanauki.pl/articles/2202557.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
chattering phenomenon
doubly fed induction generator
fuzzy logic gain adaptation
sliding mode control
vector control
wind energy conversion systems
Opis:
The paper proposes a newrobust fuzzy gain adaptation of the sliding mode (SMC) power control strategy for the wind energy conversion system (WECS), based on a doubly fed induction generator (DFIG), to maximize the power extracted from the wind turbine (WT). The sliding mode controller can deal with any wind speed, ingrained nonlinearities in the system, external disturbances and model uncertainties, yet the chattering phenomenon that characterizes classical SMC can be destructive. This problem is suitably lessened by adopting adaptive fuzzy-SMC. For this proposed approach, the adaptive switching gains are adjusted by a supervisory fuzzy logic system, so the chattering impact is avoided. Moreover, the vector control of the DFIG as well as the presented one have been used to achieve the control of reactive and active power of the WECS to make the wind turbine adaptable to diverse constraints. Several numerical simulations are performed to assess the performance of the proposed control scheme. The results show robustness against parameter variations, excellent response characteristics with a reduced chattering phenomenon as compared with classical SMC.
Źródło:
Archives of Electrical Engineering; 2023, 72, 1; 273--291
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new multistable double-scroll 4-D hyperchaotic system with no equilibrium point, its bifurcation analysis, synchronization and circuit design
Autorzy:
Vaidyanathan, Sundarapandian
He, Shaobo
Simbas, Aceng
Powiązania:
https://bibliotekanauki.pl/articles/1409110.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
hyperchaos
hyperchaotic systems
hidden attractors
multistability
sliding mode control
circuit design
Opis:
In this work, we have developed a new 4-D dynamical system with hyperchaos and hidden attractor. First, by introducing a feedback input control into the 3-D Ma chaos system (2004), we obtain a new 4-D hyperchaos system with no equilibrium point. Thus, we derive a new hyperchaos system with hidden attractor. We carry out an extensive bifurcation analysis of the new hyperchaos model with respect to the three parameters. We also carry out probability density distribution analysis of the new hyperchaotic system. Interestingly, the new nonlinear hyperchaos system exhibits multistability with coexisting attractors. Next, we discuss global hyperchaos self-synchronization for the new hyperchaos system via Integral Sliding Mode Control (ISMC). As an engineering application, we realize the new 4-D hyperchaos system with an electronic circuit via MultiSim. The outputs of the MultiSim hyperchaos circuit show good match with the numerical MATLAB plots of the hyperchaos model. We also analyze the power spectral density (PSD) of the hyperchaos of the state variables using MultiSim.
Źródło:
Archives of Control Sciences; 2021, 31, 1; 99-128
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A new strongly predefined time sliding mode controller for a class of cascade high-order nonlinear systems
Autorzy:
Abadi, Ali Soltani Sharif
Hosseinabadi, Pooyan Alinaghi
Mekhilef, Saad
Ordys, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/229682.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
predefined time
stability
sliding mode
trajectory
synchronization
Opis:
Many real-time systems can be described as cascade space-state models of different orders. In this paper, a new predefined controller is designed using a Strongly Predefined Time Sliding Mode Control (SPSMC) scheme for a cascade high-order nonlinear system. The proposed control scheme based-on SMC methodology is designed such that the system states reach zero within a determined time prior to performing numerical simulation. Moreover, Fixed Time Sliding Mode Control (FSMC) and Terminal Sliding Mode Control (TSMC) schemes are presented and simulated to provide a comparison with the proposed predefined time scheme. The numerical simulation is performed in Simulink/MATLAB for the proposed SPSMC and the other two existing methods on two examples: second and of third order to demonstrate the effectiveness of the proposed SPSMC method. The trajectory tracking of the ship course system is addressed a san example of a second-order system. Synchronization of two chaotic systems, Genesio Tesi and Coullet, is considered as an example of a third-order system. Also, by using two performance criteria, a thorough comparison is made between the proposed predefined time scheme, SPSMC, and the two no predefined time schemes, FSMC and TSMC.
Źródło:
Archives of Control Sciences; 2020, 30, 3; 599-620
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A note on attractivity for the intersection of two discontinuity manifolds
Autorzy:
Difonzo, Fabio V.
Powiązania:
https://bibliotekanauki.pl/articles/1397339.pdf
Data publikacji:
2021
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
piecewise smooth systems
sliding motion
co-dimension 2
discontinuity manifold
Opis:
In piecewise smooth dynamical systems, a co-dimension 2 discontinuity manifold can be attractive either through partial sliding or by spiraling. In this work we prove that both attractivity regimes can be analyzed by means of the moments solution, a spiraling bifurcation parameter and a novel attractivity parameter, which changes sign when attractivity switches from sliding to spiraling attractivity or vice-versa. We also study what happens at what we call attractivity transition points, showing that the spiraling bifurcation parameter is always zero at those points.
Źródło:
Opuscula Mathematica; 2020, 40, 6; 685-702
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A novel method for the design of switching surfaces for discretized MIMO nonlinear systems
Autorzy:
Luis-Delgado, J. D.
Al-Hadithi, B. M.
Jiménez, A.
Powiązania:
https://bibliotekanauki.pl/articles/331143.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
discrete sliding mode
variable structure control
nonlinear control
optimal control
MIMO system
sterowanie dyskretne
sterowanie ślizgowe
sterowanie o zmiennej strukturze
sterowanie nieliniowe
sterowanie optymalne
system MIMO
Opis:
Designing variable structure control with sliding mode (VSC-SM) control schemes needs a switching function or a sliding surface which guarantees the global stability of the closed-loop system. Despite the fact that a wide range of design approaches has been proposed for solving this mathematical problem, the number of proposed methodologies for nonlinear systems is not very extensive, especially for discrete time nonlinear MIMO systems, and most of them require some coordinate system transformation. Therefore, it is not an easy task to find a design scheme that can be applied to discrete time nonlinear MIMO systems. The proposed methodology introduces a mathematical tool: a switching surface equation for a class of MIMO nonlinear systems through an explicit equation without any coordinate transformation. This equation makes use of an implicit linearizing process via the Taylor expansion that allows the use of linear procedures for the design of switching surfaces and the forward Euler method to obtain a discrete time dynamics representation. An illustrative example is included to show the advantages of the proposed design methodology.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2017, 27, 1; 5-17
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A recording method of the working surface of counter samples during slide mating with PTFE-based composites
Metod rejestracji obrazów powierzchni roboczej przeciwpróbki podczas współpracy ślizgowej z kompozytami na bazie PTFE
Autorzy:
Oleksiak, Z.
Wiązania, G.
Kot, M.
Powiązania:
https://bibliotekanauki.pl/articles/190299.pdf
Data publikacji:
2017
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
PTFE composites
deposited layer
image recording during sliding friction
video-stroboscope
stereometric analysis of slide images
kompozyty PTFE
rejestrowanie obrazów podczas tarcia
wideostroboskop
stereologiczna analiza obrazów ślizgania
Opis:
Images of the disk working surface are recorded during its revolution in order to forecast linear wear of PTFE-based composites. Particle agglomerates (enlarged 80×) of the investigated composite deposited on the disk working surface during the slide mating are seen in those images. Those agglomerates are commonly called the transfer film. The investigation capacities of a special tribotester equipped with video-stroboscope as well as the ways of image recording in a ‘bright’ and ‘dark’ field are presented in the paper. Photographs and schemes of subassemblies of the tribotester are given. The selected images of geometrical features of the transfer film recorded during revolutions of the disk are included. It was shown that images obtained in the ‘dark’ field are easier to be processed and computer analysed compared to the images obtained in the ‘bright’ field. A conceptual approach to the application of the computer analysis results for forecasting the wear of the PTFE composites under testing is presented.
W pracy przedstawiono metodę szybkiego prognozowania intensywności zużywania liniowego kompozytów PTFE, poprzez rejestrowanie obrazów powierzchni roboczej tarczy pracującej jako przeciwpróbka, podczas jej ruchu obrotowego. Na tych obrazach, przy powiększeniu (80×), widoczne są skupiska cząstek badanego kompozytu pozostawiane na powierzchni roboczej tarczy podczas współpracy ślizgowej. W pracy przedstawiono możliwości badawcze specjalnego tribotestera wyposażonego w wideostroboskop oraz sposoby rejestracji tych obrazów w „jasnym” polu i „ciemnym” polu. Omówiono fotografie i schematy podzespołów tego tribotestera. Zamieszczono wybrane obrazy zmian cech geometrycznych warstwy kompozytu osadzonej na tarczy, zarejestrowane podczas jej ruchu obrotowego. Wykazano, że obrazy uzyskane w „ciemnym” polu są łatwiejsze do przetwarzania i analizy komputerowej. Przedstawiono koncepcję wykorzystania wyników komputerowej analizy zarejestrowanych obrazów do prognozowania zużywania badanych kompozytów PTFE.
Źródło:
Tribologia; 2017, 272, 2; 139-148
0208-7774
Pojawia się w:
Tribologia
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A reference trajectory based discrete time sliding mode control strategy
Autorzy:
Bartoszewicz, Andrzej
Adamiak, Katarzyna
Powiązania:
https://bibliotekanauki.pl/articles/330438.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
discrete time system
sliding mode control
reaching law
reference trajectory
układ dyskretno czasowy
sterowanie ślizgowe
trajektoria referencyjna
Opis:
This study presents a new, reference trajectory based sliding mode control strategy for disturbed discrete time dynamical systems. The desired trajectory, which is generated externally according to an existing switching type reaching law, determines the properties of the emerging sliding motion of the system. It is proved that an appropriate choice of the trajectory generator parameters ensures the existence of the quasi-sliding motion of the system according to the definition by Gao et al. (1995) in spite of the influence of disturbances. Moreover, the paper shows that the application of the desired trajectory based reaching law results in a significant reduction in the quasi-sliding mode band width and errors of all state variables. Therefore, in comparison with Gao’s control method, the system’s robustness is increased. The paper also presents an additional modification of the reaching law, which guarantees a further reduction in the quasi-sliding mode band in the case of slowly varying disturbances. The results are confirmed with a simulation example.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2019, 29, 3; 517-525
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A stability based neural networks controller design method
Autorzy:
Song, J.
Xu, X.
He, X.
Powiązania:
https://bibliotekanauki.pl/articles/206120.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
sieć neuronowa
stabilność
sterowanie nieliniowe
neural networks control
nonlinear control
sliding mode
stability
Opis:
The use of neural networks in control systems can be seen as a natural step in the evolution of control methodology to meet new challenges. Many attempts have been made to apply the neural networks to deal with non-linearities and uncertainties of the control systems. Research in neural network applications to control can be classified according to the major methods depending on structures of the control system, such as NN-based NON-linear System Identification, NN-based Supervised Control, NN-based Direct Control, NN-based Indirect Control, NN-based Adaptive Control, NN-based Self-learning Control, NN-based Fuzzy Control, and NN Variable Structure Control. All these control methods cannot, however, effectively guarantee system stability, i.e. none of these neural network controls, except for NN-based Variable Structure Control, is based on system stability. This also limits the application and development of the neural networks in control theory. The paper shows the effort to solve this difficulty and give a way for the design method of the stability based neural networks controller using Lyapunov second stability theorem. This kind of controller can not only guarantee system stability, but also fully compensate for the influence of system uncertainties and non-linearities.Simulation results also show the effectiveness of the controller.
Źródło:
Control and Cybernetics; 1998, 27, 1; 119-133
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A study of dynamic hysteresis model for a magnetorheological damper
Autorzy:
Chen, Kun-Yung
Kung, Ming-Lung
Powiązania:
https://bibliotekanauki.pl/articles/2200888.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
identification
LuGre model
magnetorheological damper
self-learning particle
swarm optimization
SLPSO
sliding mode observer
SMO
Opis:
The paper proposes a new dynamic model based on the LuGre model and an electrical equation to describe the hysteresis phenomenon for a magnetorheological (MR) damper. In addition, a sliding mode observer (SMO) is proposed to estimate unmeasurable states of the MR damper. The parameters of the MR damper are successfully identified by using the self-learning particle swarm optimization (SLPSO) algorithm. The contributions of this paper are: i) a new dynamic model based on the LuGre model and an electrical equation for an MR damper is successfully formulated to fit for the hysteresis behavior, ii) the exerted damping force can be practically adjusted by using input voltage for the dynamic model, iii) the SMO is proposed to estimate the internal states and current, and iv) the unknown parameters of the MR damper are successfully identified by using the SLPSO algorithm with a numerical experiment.
Źródło:
Journal of Theoretical and Applied Mechanics; 2023, 61, 2; 259--274
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł

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