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    Wyświetlanie 1-10 z 10
    Tytuł:
    Decoupling zeros of positive electrical circuits
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/141696.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    decoupling zeros
    positive
    continuous-time
    linear system
    observability
    reachability
    Opis:
    Necessary and sufficient conditions for the reachability and observability of the positive electrical circuits composed of resistors, coils, condensators and voltage sources are established. Definitions of the input-decoupling zeros, output-decoupling zeros and input-output decoupling zeros of the positive electrical circuits are proposed. Some properties of the decoupling zeros of positive electrical circuits are discussed.
    Źródło:
    Archives of Electrical Engineering; 2013, 62, 4; 553-568
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Decoupling zeros of positive continuous-time linear systems
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/201492.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    decoupling zeros
    positive
    continuous-time
    linear system
    observability
    reachability
    Opis:
    Necessary and sufficient conditions for the reachability and observability of the positive continuous-time linear systems are established. Definitions of the input-decoupling zeros, output-decoupling zeros and input-output decoupling zeros are proposed. Some properties of the decoupling zeros are discussed.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 3; 557-562
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic decoupling of left-invertible MIMO LTI plants
    Autorzy:
    Dworak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/229937.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dynamic decoupling
    left-invertible
    pole assignment
    polynomial matrix equations
    Opis:
    In the paper problems with dynamic decoupling of the left-invertible multi-input multi-output dynamic (MIMO) linear time invariant (LTI) plants are considered. It is presented an universal and efficient algorithm for synthesis of control system for proper, square, right and left invertible plants which can be both unstable and/or non-minimumphase.
    Źródło:
    Archives of Control Sciences; 2011, 21, 4; 443-459
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Input-output decoupling for a 3D free-floating satellite with a 3R manipulator with state and input disturbances
    Autorzy:
    Domski, W.
    Mazur, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/201750.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    3D free-floating satellite
    input–output decoupling
    control
    homogeneous noise
    Opis:
    This work presents the results acquired during simulation studies done for a 3D free-floating satellite behaviour with input-output decoupling approach. The research object is a free-floating satellite with a 3 DoF rigid 3D manipulator where a noise disturbance was introduced. Different approaches are used to compensate the noise influence. Systems using a visual aid to determine the position of manipulator joints are not ideal and introduce some uncertainties. What is more, determining the position from joints encoders is not error-free while computing angular velocity from numerical differentiation introduces even greater disturbance to the system. A couple of scenarios were investigated where state of the manipulator, including its position and velocity, was disturbed with homogeneous noise. Also the control inputs of the manipulator were disturbed. Simulation results show that the biggest impact on the control quality has a scenario where the satellite’s state has been disturbed with additive noise.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 6; 1031-1039
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Online control signal-based diagnosis of interturn short circuits of PMSM drive
    Autorzy:
    Krzysztofiak, Mateusz
    Zawilak, Tomasz
    Tarchała, Grzegorz
    Powiązania:
    https://bibliotekanauki.pl/articles/2202549.pdf
    Data publikacji:
    2023
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    decoupling
    diagnostic
    Finitie Element Method
    FEM
    inter-turn short circuits
    modelling
    PMSM
    Opis:
    Modern drives with Permanent Magnet Synchronous Motors (PMSMs) require both efficient control structure to ensure excellent dynamics and effective diagnostic algorithms to detect the motor faults that can occur. This paper shows the combination of both mentioned aspects – the direct-axis based signals of the Field Oriented Control (FOC) structure are proposed as diagnostic signals to allow diagnosing the interturn short-circuit failure that can appear inside stator windings. The amplitudes of second order harmonics are selected as the fault indicators. Different modelling methods are analysed and compared in detail in this paper: an analytical mathematical model, a Finite Element Method (FEM)- based model and next verified using a laboratory setup. The results obtained using all the mentioned models proved that the proposed fault indices are increasing significantly with the number of shorted turns and are independent on the load torque level.
    Źródło:
    Archives of Electrical Engineering; 2023, 72, 1; 103--124
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research on the influence of driving harmonic on electromagnetic field and temperature field of permanent magnet synchronous motor
    Autorzy:
    Qiu, H.
    Yu, W.
    Li, Y.
    Yang, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/141535.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    air gap flux density
    eddy current loss
    harmonic
    magnetic field decoupling
    torque ripple
    Opis:
    At present, the drivers with different control methods are used in most of permanent magnet synchronous motors (PMSM). A current outputted by a driver contains a large number of harmonics that will cause the PMSM torque ripple, winding heating and rotor temperature rise too large and so on. In this paper, in order to determine the influence of the current harmonics on the motor performance, different harmonic currents were injected into the motor armature. Firstly, in order to study the influence of the current harmonic on the motor magnetic field, a novel decoupling method of the motor magnetic field was proposed. On this basis, the difference of harmonic content in an air gap magnetic field was studied, and the influence of a harmonic current on the air gap flux density was obtained. Secondly, by comparing the fluctuation of the motor torque in the fundamental and different harmonic currents, the influence of harmonic on a motor torque ripple was determined. Then, the influence of different current harmonics on the eddy current loss of the motor was compared and analyzed, and the influence of the drive harmonic on the eddy current loss was obtained. Finally, by using a finite element method (FEM), the motor temperature distribution with different harmonics was obtained.
    Źródło:
    Archives of Electrical Engineering; 2017, 66, 2; 295-312
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Squaring down plant model and I/O grouping strategies for a dynamic decoupling of left-invertible MIMO plants
    Autorzy:
    Dworak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/200946.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    multivariable systems
    MIMO
    dynamic decoupling
    left-invertible systems
    input-output pairing
    polynomial approach
    Opis:
    In the paper problems with dynamic decoupling of the left-invertible multi-input multi-output dynamic (MIMO) linear time invariant plants using a squaring down technique are considered. The procedure of squaring down the plant model and grouping of plant inputs and outputs are discussed. The final part of the paper includes a few examples of different strategies of synthesis of a decoupled system along with conclusions and final remarks.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 3; 471-479
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Active power decoupling topology for AC-DC and DC-AC single-phase systems with decoupling capacitor minimization
    Autorzy:
    Stawiarski, Ł.
    Piróg, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/141750.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    active power decoupling
    capacitance reduction
    microgrid converter
    double-line frequency ripple power
    single-phase systems
    power factor correction
    Opis:
    Passive power decoupling in single-phase DC-AC and AC-DC systems usually requires usage of electrolytic capacitors. To minimize converter volume, increase reliability, robustness and to eliminate ripple power effect on the DC side, new solutions for Active Power Decoupling are proposed. In this paper a novel Active Power Decoupling topology for low power single-phase AC-DC and DC-AC converters is presented. The proposed topology is based on well-known boost and buck-boost topologies but with a completely different control scheme. The topology description with a complete control algorithm is presented. The proposed APD solution is verified by experimental results of a 450 W converter in AC-DC mode and a 320 W converter in DC-AC mode.
    Źródło:
    Archives of Electrical Engineering; 2018, 67, 1; 193-205
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Longitudinal automatic carrier-landing control law rejecting disturbances and coupling based on adaptive dynamic inversion
    Autorzy:
    Wang, Lipeng
    Zhang, Zhi
    Zhu, Qidan
    Wen, Zixia
    Powiązania:
    https://bibliotekanauki.pl/articles/2090730.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    carrier-based aircraft
    automatic landing
    nonlinear dynamic inversion
    lateral decoupling
    parameters adaptation
    statki powietrzne bazujące na lotniskowcach
    automatyczne lądowanie
    inwersja dynamiczna nieliniowa
    odsprzęganie boczne
    dostosowanie parametrów
    Opis:
    The longitudinal automatic carrier landing system (ACLS) control law is designed based on nonlinear dynamic inversion (NDI), which can reject air wake, decouple lateral states, and track the dynamic desired touchdown point (DTP). First of all, the nonlinear landing model of F/A−18 aircraft in the final approach is established, in which the parameters of the aerodynamic, control surfaces, and limited states are acquired. Second, the strategy of tracking the desired longitudinal trajectory through pitch angle control is adopted. The automatic power compensation system (APCS), pitch angle rate, pitch angle, and vertical position control loops are developed based on the adaptive NDI. The stable analysis and the principal description are derived in detail. Deck motion compensation (DMC) algorithm is designed by frequency response method. Third, the control parameters are optimized through the genetic algorithm. A fitness function integrated with velocity, angle of attack (AOA), pitch rate, pitch angle, and vertical position of the aircraft are proposed. Finally, integrated simulations are conducted on a semi-physical simulation platform. The results indicate that the adopted automatic landing control law can achieve both excellent performance and the ability to reject the air wake and lateral coupling.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; e136217, 1--10
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Longitudinal automatic carrier-landing control law rejecting disturbances and coupling based on adaptive dynamic inversion
    Autorzy:
    Wang, Lipeng
    Zhang, Zhi
    Zhu, Qidan
    Wen, Zixia
    Powiązania:
    https://bibliotekanauki.pl/articles/2173584.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    carrier-based aircraft
    automatic landing
    nonlinear dynamic inversion
    lateral decoupling
    parameters adaptation
    statki powietrzne bazujące na lotniskowcach
    automatyczne lądowanie
    inwersja dynamiczna nieliniowa
    odsprzęganie boczne
    dostosowanie parametrów
    Opis:
    The longitudinal automatic carrier landing system (ACLS) control law is designed based on nonlinear dynamic inversion (NDI), which can reject air wake, decouple lateral states, and track the dynamic desired touchdown point (DTP). First of all, the nonlinear landing model of F/A−18 aircraft in the final approach is established, in which the parameters of the aerodynamic, control surfaces, and limited states are acquired. Second, the strategy of tracking the desired longitudinal trajectory through pitch angle control is adopted. The automatic power compensation system (APCS), pitch angle rate, pitch angle, and vertical position control loops are developed based on the adaptive NDI. The stable analysis and the principal description are derived in detail. Deck motion compensation (DMC) algorithm is designed by frequency response method. Third, the control parameters are optimized through the genetic algorithm. A fitness function integrated with velocity, angle of attack (AOA), pitch rate, pitch angle, and vertical position of the aircraft are proposed. Finally, integrated simulations are conducted on a semi-physical simulation platform. The results indicate that the adopted automatic landing control law can achieve both excellent performance and the ability to reject the air wake and lateral coupling.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2021, 69, 1; art. no. e136217
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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