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    Wyświetlanie 1-5 z 5
    Tytuł:
    Electronic flight data acquisition system for remotely piloted aircraft
    Autorzy:
    Rusiecki, T.
    Skowronek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1189977.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    centrala danych aerometrycznych
    system zbierania danych
    sensor bezprzewodowy
    RPAS
    Air Data Computer
    Attitude and Heading Reference System
    data acquisition system
    wireless sensor
    Opis:
    This article presents data acquisition system developed for the use primarily in Remotely Piloted Aircraft Systems. The system consists of several modules which independently function as Air Data Computer, Attitude and Heading Reference System and Flight Data Recorder. Each module works independently from other modules and also provides capability of real time data transmission. The system is capable of wireless data transmission via ZigBee wireless data protocol. The research may be considered as important and valuable due to the fact that it describes innovative concept of “wireless sensors” system. These type of systems are currently only beginning to appear in commercial applications and such wireless systems appear to be a future of metrology in RPAS applications. Features of each module are stated in the article. The prototype device has been tested and confirmed to be operationally functional.
    Źródło:
    Interdisciplinary Journal of Engineering Sciences; 2017, 5, 1; 11--26
    2300-5874
    Pojawia się w:
    Interdisciplinary Journal of Engineering Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rotor Resistance Estimator based on Virtual Current Sensor Algorithm for Induction Motor Drives
    Autorzy:
    Adamczyk, Michał
    Powiązania:
    https://bibliotekanauki.pl/articles/1193854.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    induction motor drive
    rotor resistance estimator
    model reference adaptive system
    virtual current sensor
    fault tolerant control
    Opis:
    In this article, model reference adaptive system (MRAS)-based estimator of a rotor resistance of an induction motor (IM) is presented. In contrast to the solutions known from the literature, the reference model of this estimator uses the measured values of the phase current and the adaptive part is a virtual current sensor. The article presents an accurate description of the algorithm taking into account the discrete equations for possible practical implementation in the microprocessor system. In the first step, the impact of motor parameters to stator current estimation quality in the adaptive model was checked. Subsequently, simulation tests of the proposed rotor resistance estimator were carried out for the field-oriented control of the induction motor drive system with a model of an induction motor with fixed parameters and an induction motor with a changing main inductance according to a magnetisation curve. The analysis of the estimator’s work showed its high efficiency and insensitivity to changes in the IM main inductance.
    Źródło:
    Power Electronics and Drives; 2020, 5, 40; 143-156
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sensorless Induction Motor Drive Based on Model Reference Adaptive System Scheme Utilising a Fictitious Resistance
    Autorzy:
    Hajji, Soufien
    Chehida, Ramzi Ben
    Zayani, Hichem
    Bouaziz, Noomen
    Zorgani, Youssef Agrebi
    Powiązania:
    https://bibliotekanauki.pl/articles/1193902.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    indirect stator flux-oriented controller model
    ISFOC model
    model reference adaptive system
    MRAS
    fictitious resistance
    rotor speed estimation
    induction motor
    IM
    Opis:
    This article presents a new development of an indirect stator flux-oriented controller for sensorless speed induction motor drive utilising instantaneous and steady-state values, respectively, of a fictitious resistance symbolised as R_f. The dimension of the fictitious quantity, in this context, is the ohm, which is the difference between the stator d- and q-axis fictitious resistances. However, from the measurement of the stator voltage and currents of the machine, two independent resistance estimators are built. Therefore, the first is considered as a reference model of the induction machine (IM), and the second is considered as an adjustable model. Subsequently, the error between the states of the two models is used to drive a suitable adaptation mechanism that generates the estimation of the speed, for the adjustable model. Furthermore, the structure of the proposed estimator is free from stator resistance and eliminates the requirement of any flux computation. All the detailed simulation study is carried out in MATLAB/Simulink to validate the proposed method and to highlight the robustness and the stability of the proposed model reference adaptive system estimator.
    Źródło:
    Power Electronics and Drives; 2020, 5, 40; 199-212
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A very-low-speed sensorless control induction motor drive with online rotor resistance tuning by using MRAS scheme
    Autorzy:
    Agrebi Zorgani, Y.
    Jouili, M.
    Koubaa, Y.
    Boussak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1193675.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    induction motor
    stator flux orientation model
    model reference adaptive system
    MRAS
    rotor speed estimation
    resistance estimation
    programmable cascaded low-pass filters
    PCLPF
    Opis:
    A sensorless indirect stator-flux-oriented control (ISFOC) induction motor drive at very low frequencies is presented herein. The model reference adaptive system (MRAS) scheme is used to estimate the speed and the rotor resistance simultaneously. However, the error between the reference and the adjustable models, which are developed in the stationary stator reference frame, is used to drive a suitable adaptation mechanism that generates the estimates of speed and the rotor resistance from the stator voltage and the machine current measurements. The stator flux components in the stationary reference frame are estimated through a pure integration of the back electro-motive force (EMF) of the machine. When the machine is operated at low speed, the pure integration of the back EMF introduces an error in flux estimation which affects the performance torque and speed control. To overcome this problem, pure integration is replaced with a programmable cascaded low-pass filter (PCLPF). The stability analysis method of the MRAS estimator is verified in order to show the robustness of the rotor resistance variations. Experimental results are presented to prove the effectiveness and validity of the proposed scheme of sensorless ISFOC induction motor drive.
    Źródło:
    Power Electronics and Drives; 2018, 3, 38; 171-186
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Very-Low-Speed Sensorless Control Induction Motor Drive with Online Rotor Resistance Tuning by Using MRAS Scheme
    Autorzy:
    Zorgani, Youssef Agrebi
    Jouili, Mabrouk
    Koubaa, Yassine
    Boussak, Mohamed
    Powiązania:
    https://bibliotekanauki.pl/articles/1193692.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    induction motor
    stator flux orientation model
    model reference adaptive system
    MRAS
    rotor speed estimation
    resistance estimation
    programmable cascaded low-pass filters
    PCLPF
    Opis:
    A sensorless indirect stator-flux-oriented control (ISFOC) induction motor drive at very low frequencies is presented herein. The model reference adaptive system (MRAS) scheme is used to estimate the speed and the rotor resistance simultaneously. However, the error between the reference and the adjustable models, which are developed in the stationary stator reference frame, is used to drive a suitable adaptation mechanism that generates the estimates of speed and the rotor resistance from the stator voltage and the machine current measurements. The stator flux components in the stationary reference frame are estimated through a pure integration of the back electro-motive force (EMF) of the machine. When the machine is operated at low speed, the pure integration of the back EMF introduces an error in flux estimation which affects the performance torque and speed control. To overcome this problem, pure integration is replaced with a programmable cascaded low-pass filter (PCLPF). The stability analysis method of the MRAS estimator is verified in order to show the robustness of the rotor resistance variations. Experimental results are presented to prove the effectiveness and validity of the proposed scheme of sensorless ISFOC induction motor drive.
    Źródło:
    Power Electronics and Drives; 2019, 4, 39; 125-140
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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