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    Tytuł:
    Ekwiwalentne sterowanie ślizgowe prędkością kątową silnika indukcyjnego
    Equivalent sliding-mode control of the induction motor speed
    Autorzy:
    Tarchała, G.
    Orłowska-Kowalska, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1813980.pdf
    Data publikacji:
    2013
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    silnik indukcyjny
    sterowanie prędkością
    ruch ślizgowy
    chattering
    Opis:
    The paper deals with the speed control of the induction motor drive, which utilizes the sliding modes. In order to reduce the oscillations of regulated variables (the chattering phenomenon), in contradiction to the commonly used relay control method, the equivalent control method is applied. In this method, control signal consists of two different parts: continuous and discontinuous. The design method of such controller has been presented, based on the general design methodology of the systems with sliding modes, which has been demonstrated in the introductory part of the paper. The proposed control algorithm has been verified in simulation and experimental tests for the 3 kW induction motor.
    Źródło:
    Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały; 2013, 69, 33; 82--96
    1733-0718
    Pojawia się w:
    Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design and implementation of improved sliding mode controller on 6R manipulator
    Autorzy:
    Korayem, M. H.
    Nekoo, S. R.
    Khademi, A.
    Abdollahi, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/280702.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    improved sliding mode control
    chattering
    DLCC
    hardware implementation
    Opis:
    In this work, we present an improved sliding mode control (ISMC) technique designed and implemented for control of 6R manipulator. Sliding mode control (SMC) is a well-known nonlinear robust method for controlling systems in the presence of uncertainties and disturbances and systems with complex dynamics as in manipulators. Despite this good property, it is difficult to implement this method for the manipulator with a complex structure and more than three degree-of-freedom because of the complicated and massive equation and chattering phenomenon as a property of SMC in control inputs. Here, the chattering phenomenon is eliminated by using an effective algorithm called ISMC and implemented to 6R manipulator by using a low-cost control board based on an ARM microcontroller with high accuracy and memory. The carrying load is considered as the uncertainty for the manipulator, while the dynamic load carrying capacity (DLCC) is considered as a robot performance criterion showing robustness of the controller. The results of simulations and experiments show that the proposed approach has a good performance and is suitable and practical to be applied for manipulators.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2017, 55, 1; 265-280
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adaptive Neuro-Sliding Mode Control of PUMA 560 Robot Manipulator
    Autorzy:
    Medjebouri, A.
    Mehennaoui, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/384592.pdf
    Data publikacji:
    2016
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    Puma 560
    position control
    NN
    SMC
    robustness
    chattering
    Opis:
    The classical sliding mode control (SMC) is a robust control scheme widely used for dealing with nonlinear systems uncertainties and disturbances. However, the conventional SMC major drawback in real applications is the chattering phenomenon problem, which involves extremely high control activity due to the switched control input. To overcome this handicap, a pratical design method that combines an adaptive neural network and sliding mode control principles is proposed in this paper. The controller design is divided into two phases. First, the chattering phenomenon is removed by replacing the sign function included in the switched control by a continuous smooth function; basing on Lyapounov stability theorem. Then, an adaptive linear neural network, that has the role of online estimate the equivalent control in the neighborhood of the sliding manifold, is developed when the controlled plant is poorly modeled. Simulation results show clearly the satisfactory chattering free tracking performance of proposed controller when it is applied for the joints angular positions control of a 6-DOF PUMA 560 robot arm.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2016, 10, 4; 8-16
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High-performance induction motor drive based on adaptive super-twisting sliding mode control approach
    Autorzy:
    Farhi, Salah Eddine
    Sakri, Djamel
    Goléa, Noureddine
    Powiązania:
    https://bibliotekanauki.pl/articles/2042783.pdf
    Data publikacji:
    2022
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    barrier function
    chattering
    gains adaptation
    induction motor drive
    sliding mode control
    super twisting
    Opis:
    This paper proposes two high-order sliding mode algorithms to achieve highperformance control of induction motor drive. In the first approach, the super-twisting algorithm (STA) is used to reduce the chattering effect and to improve control accuracy. The second approach combines the super-twisting algorithm with a quasi-barrier function technique. While the super-twisting algorithm (STA) aims at the chattering reduction, the Barrier super-twisting algorithm (BSTA) aims to eliminate this phenomenon by providing continuous output control signals. The BSTA is designed to prevent the STA gain from being over-estimated by making these gains to decrease and increase according to system’s uncertainties. Stability and finite-time convergence are guaranteed using Lyapunov’s theory. In addition, the two controlled variables, rotor speed, and rotor flux modulus are estimated based on the second-order sliding mode (SOSM) observer. Finally, simulations are carried out to compare the performance and robustness of two control algorithms without adding the equivalent control. Tests are achieved under external load torque, varying reference speed, and parameter variations.
    Źródło:
    Archives of Electrical Engineering; 2022, 71, 1; 245-263
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model Predictive Super-twisting sliding mode control for an autonomous surface vehicle
    Autorzy:
    Esfahani, Hossein Nejatbakhsh
    Szlapczynski, Rafal
    Powiązania:
    https://bibliotekanauki.pl/articles/260526.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    utonomous Surface Vehicle
    Model Predictive Control
    Sliding Mode Control
    Super-Twisting Algorithm
    Chattering Attenuation
    Opis:
    This paper presents a new robust Model Predictive Control (MPC) algorithm for trajectory tracking of an Autonomous Surface Vehicle (ASV) in presence of the time-varying external disturbances including winds, waves and ocean currents as well as dynamical uncertainties. For fulfilling the robustness property, a sliding mode control-based procedure for designing of MPC and a super-twisting term are adopted. The MPC algorithm has been known as an effective approach for the implementation simplicity and its fast dynamic response. The proposed hybrid controller has been implemented in MATLAB / Simulink environment. The results for the combined Model Predictive Super-Twisting Sliding Mode Control (MP-STSMC) algorithm have shown that it significantly outperforms conventional MPC algorithm in terms of the transient response, robustness and steady state response and presents an effective chattering attenuation in comparison with the Super-Twisting Sliding Mode Control (STSMC) algorithm.
    Źródło:
    Polish Maritime Research; 2019, 3; 163-171
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Filtered integral sliding mode control in a two-mass drive system
    Autorzy:
    Dróżdż, P.
    Szabat, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1193310.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    filtered integral sliding mode control
    integral sliding mode control
    two-mass system
    chattering alleviation
    Opis:
    The paper presents issues related to the application of filtered integral sliding mode control to a two-mass drive system. A classical control structure has been presented and its design procedure is shown in detail. The properties of the classical structure, in which the chattering phenomenon seems to be a big drawback, have been summarized. In order to eliminate this phenomenon, an output low-pass filter has been proposed and the performance of this system has been tested. In order to improve its characteristics, an adaptive low-pass filter has been proposed. The bandwidth of the filter was changed on-line by the fuzzy system according to the current state of the plant. During the steady-states, the bandwidth is low to eliminate chattering effect, and during transients higher in order to ensure the fast dynamics of the plant.
    Źródło:
    Power Electronics and Drives; 2017, 2, 37/1; 121-134
    2451-0262
    2543-4292
    Pojawia się w:
    Power Electronics and Drives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ślizgowy obserwator prędkości kątowej napędu prądu stałego
    Sliding mode angular velocity observer of the DC drive
    Autorzy:
    Sieklucki, G.
    Sykulski, R.
    Bisztyga, B.
    Orzechowski, T.
    Zdrojewski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/320318.pdf
    Data publikacji:
    2010
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    napęd prądu stałego
    obserwator zmiennych stanu
    sterowanie ślizgowe
    chattering
    DC drive
    state observer
    sliding mode control
    Opis:
    Artykuł przedstawia obserwator ze sprzężeniem zwrotnym. Zaprezentowano obserwator prędkości kątowej bazujący na sterowaniu ślizgowym. Omówiono wpływ parametrów obserwatora na uzyskiwaną jakość regulacji prędkości. Omówiono metody eliminacji zjawiska chatteringu - filtr dolnoprzepustowy, zastąpienie funkcji sign przez sat (nasycenie). Przedstawiono wyniki badań symulacyjnych.
    The article presents the closed-loop observer. The observer of the angular velocity based on the sliding mode con-trol is shown. The influence of the observer parameters on velocity control quality is talked over. The elimination of the chattering phenomenon is discussed - low-pass filter and replacement of the function sign by sat (saturation). Simulation results are presented.
    Źródło:
    Elektrotechnika i Elektronika; 2010, 29, 1--2; 41-46
    1640-7202
    Pojawia się w:
    Elektrotechnika i Elektronika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Unified approach to the sliding-mode control and state estimation – application to the induction motor drive
    Autorzy:
    Orlowska-Kowalska, T.
    Tarchala, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/201791.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    induction motor
    sliding mode control
    motor torque control
    chattering
    state estimation
    model reference adaptive system (MRAS)
    Opis:
    In this paper a generalized design procedure of the sliding mode systems is described. A unified approach is applied to control and state variables estimation algorithms. Selected solutions are then applied in the induction motor drive system. An identical design procedure is used to design the speed control and MRAS-type speed estimator. Presented algorithms are verified using experimental tests performed on the 3 kW laboratory setup.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 837-846
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical 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:
    Three-dimensional path-following control of an autonomous underwater vehicle based on deep reinforcement learning
    Autorzy:
    Liang, Zhenyu
    Qu, Xingru
    Zhang, Zhao
    Chen, Cong
    Powiązania:
    https://bibliotekanauki.pl/articles/32898215.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    autonomous underwater vehicle (AUV)
    three-dimensional path following
    deep reinforcement learning-based control
    lineof-sight guidance
    controller chattering
    Opis:
    In this article, a deep reinforcement learning based three-dimensional path following control approach is proposed for an underactuated autonomous underwater vehicle (AUV). To be specific, kinematic control laws are employed by using the three-dimensional line-of-sight guidance and dynamic control laws are employed by using the twin delayed deep deterministic policy gradient algorithm (TD3), contributing to the surge velocity, pitch angle and heading angle control of an underactuated AUV. In order to solve the chattering of controllers, the action filter and the punishment function are built respectively, which can make control signals stable. Simulations are carried out to evaluate the performance of the proposed control approach. And results show that the AUV can complete the control mission successfully.
    Źródło:
    Polish Maritime Research; 2022, 4; 36-44
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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