Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "model linearization" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-12 z 12
    Tytuł:
    Model Predictive Control of the ship’s motion in presence of wind disturbances
    Autorzy:
    Miller, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/359988.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    Model Predctive Control
    MPC
    ship’s velocity control
    wind disturbances
    model linearization
    Opis:
    Model Predictive Control is a control strategy which can be used for ships guidance and trajectory tracking problems. Linear multidimensional MPC controller is used to control the transversal, longitudinal and rotational velocities of a ship. Control system based on the MPC algorithms is robust to wind disturbances and thus can be used in real sailing conditions. It is proved by the computer simulations results and described in detail in this publication. Whole control system was designed and simulation studies were carried out on the basis of the real floating training ship model. A Model Predictive Controller synthesis steps, including linearization of the nonlinear ship model in the vicinity of operating point, are shown.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2014, 39 (111); 107-115
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Weakly nonlinear regression model with constraints I: nonlinear hypothesis
    Autorzy:
    Kubácek, Lubomír
    Tesaríková, Eva
    Powiązania:
    https://bibliotekanauki.pl/articles/729706.pdf
    Data publikacji:
    2005
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    regression model with constraints
    nonlinear hypothesis
    linearization
    Opis:
    The problem considered is under which conditions in weakly nonlinear regression model with constraints I a weakly nonlinear hypothesis can be tested by linear methods. The aim of the paper is to find a region around the approximate value of the regression parameter with the following property. If we are certain that the actual value of the regression parameter is in this region, then the linear method of testing can be used without any significant deterioration of the inference.
    Źródło:
    Discussiones Mathematicae Probability and Statistics; 2005, 25, 1; 115-133
    1509-9423
    Pojawia się w:
    Discussiones Mathematicae Probability and Statistics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    How to deal with regression models with a weak nonlinearity
    Autorzy:
    Tesaríková, Eva
    Kubáček, Lubomír
    Powiązania:
    https://bibliotekanauki.pl/articles/729868.pdf
    Data publikacji:
    2001
    Wydawca:
    Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
    Tematy:
    nonlinear regression model
    criteria of linearization
    demo program
    Opis:
    If a nonlinear regression model is linearized in a non-sufficient small neighbourhood of the actual parameter, then all statistical inferences may be deteriorated. Some criteria how to recognize this are already developed. The aim of the paper is to demonstrate the behaviour of the program for utilization of these criteria.
    Źródło:
    Discussiones Mathematicae Probability and Statistics; 2001, 21, 1; 21-48
    1509-9423
    Pojawia się w:
    Discussiones Mathematicae Probability and Statistics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The linearization of mooring load distribution problem
    Autorzy:
    Artyszuk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/135702.pdf
    Data publikacji:
    2016
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    ship manoeuvring
    mooring
    berthing
    hydrodynamics
    loads
    linear model
    linearization
    Opis:
    This paper presents a novel step forward in finding the loads of particular mooring ropes that balance the steady environmental excitations for a ship staying at berth. The industrial static equilibrium method for a rough assessment of ship mooring safety is considered to be well-established. The static loads are directly related to the rope’s MBLs (minimum breaking loads) while applying a certain safety margin (usually 50%). The problem is reduced to a set of linear equations that may be solved analytically. The generality in terms of arbitrary horizontal and vertical angles of mooring ropes is preserved. All derivations are provided to enhance trust in the very simple yet absolutely accurate and fast linear solution. The accuracy is studied both analytically, throughout all the development stages, and finally by comparison to the exact numerical solution of the original nonlinear equilibrium equations for an exemplary mooring pattern. A discussion of selected effects in load distribution is also given. Using the approach presented, for instance, we can efficiently test mooring safety when any mooring rope of the set is accidentally broken.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2016, 46 (118); 9-16
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Test bench and simulation research on hydrodynamic torque converter for different input signals
    Autorzy:
    Wozniak, M.
    Siczek, K.
    Pawelski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/247933.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    torque converter
    torque
    Matlab/Simulink
    linearization
    nonlinear model
    ARX
    OE
    Opis:
    This paper presents the experimental research and simulating results of a ZM130 hydrodynamic torque converter under steady and unsteady working conditions with an external step signal and sinus on turbine’s shaft on a modified test bench. The mathematical model of torque converter was described by the one-dimensional flow theory with variable loss coefficients. The character of received equations from test bend showed by linearized transmittance functions with variable coefficients. For test bend object identification researches will be used an Identification Toolbox from a mathematical code in Matlab, which enables to create transfer functions as a linear model from measurements data as they got the highest correctness level with input signal (as they get the best correction level with input signal on the pump´s shaft). This mathematical model for dynamic loads will be verified by experimental tests. The aim of the carried out studies was determination the effect of sampling time decreasing on the quality of measured parameters. Results of present investigations were compared with those obtained earlier, but for the same input signals .It is possible to affirm that proposed theoretical model imitates the change of dynamic parameters, and the same the property of the torque converter. Researches led on the test bend with extortion input torque sinus signal on the turbine’s shaft confirmed correctness of this model.
    Źródło:
    Journal of KONES; 2016, 23, 4; 561-568
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation of the dynamics of singular protected systems
    Autorzy:
    Naumeyko, I.
    Alja'afreh, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/411040.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    "Man-Machine-Environment" model
    non-linear system
    singular equations
    asymptotic
    linearization
    Opis:
    The analysis of asymptotic representations of the systems protected from harmful influences is carried out. Various types of general models of the "manmachineenvironment" with protection are considered. Each of them adequately describes some of the practically important qualities of the object, and they all together describe the object in terms of its safe operation. The dynamic properties of complex ergonomic systems, presented in the form of systems of differential equations with a small parameter at the derivative are investigated The methods of reducing the impact on the person of harmful factors are theoretically substantiated. The dynamic protection response speed is considered to be significantly greater than the harmful factor production rate. Numerical solution of the general problem and the analytical solution for autonomous case is obtained for harmful effects. By using asymptotic the system of equations has been solved in closed form not only for autonomous case, but also for parameters smoothly changing in time. The estimates of the cost of protection was obtained for the various cost-functionals and for different functions in the right-hand side of the equation describing the dynamics of protection. To assess the accuracy of model calculations and for graphic representation of the results mathematical package MAXIMA is used.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 4; 37-42
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of Using an Inerter on the Performance of Vehicle Active Suspension
    Autorzy:
    Alshabatat, Nabeel
    Shaqarin, Tamir
    Powiązania:
    https://bibliotekanauki.pl/articles/2201718.pdf
    Data publikacji:
    2022
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    inerter
    active suspension
    nonlinear quarter-car model
    ride comfort
    feedback linearization
    Opis:
    This paper investigates the effect of employing an inerter on the performance of active suspension systems. A quarter-car model with cubic-nonlinear spring is considered. The inerter is installed in parallel with the primary suspension spring and damper. First, feedback linearization (FBL) is used to linearize the mathematical model. Then the linear quadratic regulator (LQR) is adopted to control the suspension system. The proposed design is ride comfort-oriented and considers structural constraints. Numerical simulations are executed for passive systems with different values of inertance. Results show that employing an inerter to the passive suspension can improve the ride comfort performance by more than 32%. Employing an inerter to active suspension systems can also improve the ride comfort and reduce actuator force significantly. The actuator force can be reduced by 25%. However, the results also show that the uncaring selection of the inerter can dramatically degrade the performance of the suspension system.
    Źródło:
    Advances in Science and Technology. Research Journal; 2022, 16, 3; 331--339
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A mathematical model for controlling a quadrotor UAV
    Model matematyczny do sterowania czterowirnikowym BSP
    Autorzy:
    Kowalik, Rafał
    Łusiak, Tomasz
    Novak, Andrej
    Powiązania:
    https://bibliotekanauki.pl/articles/36444941.pdf
    Data publikacji:
    2021
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Lotnictwa
    Tematy:
    UAV control system
    dynamics model
    quadrotor
    linearization
    system kontroli BSP
    model dynamiki
    czterowimikowy BSP
    linearyzacja
    Opis:
    Given the recent surge in interest in UAVs and their potential applications, a great deal of work has lately been done in the field of UAV control. However, UAVs belong to a class of nonlinear systems that are inherently difficult to control. In this study we devised a mathematical model for a PID (proportional integral derivative) control system, designed to control a quadrotor UAV so that it follows a predefined trajectory. After first describing quadrotor flight dynamics, we present the control model adopted in our system (developed in MATLAB Simulink). We then present simulated results for the use of the control system to move a quadrotor UAV to desired locations and along desired trajectories. Positive results of these simulation support the conclusion that a quadrotor UAV spatial orientation control system based on this model will successfully fulfil its task also in real conditions.
    Wobec rosnącego zainteresowania bezzałogowymi statkami powietrznymi (BSP) i ich potencjalnymi zastosowaniami, w ostatnim czasie wykonano wiele prac w dziedzinie ich lepszego sterowania. BSP jednak należą do klasy nielinearnych systemów, które są z natury trudne do sterowania. W niniejszej pracy opracowano model matematyczny dla systemu sterowania opartego na metodzie PID (proportional integral derivative), zaprojektowanego do sterowania czterowirnikowym BSP tak, aby podążał on po wcześniej zdefiniowanej trajektorii. Opisano dynamiki lotu czterowirnikowym BSP i zaprezentowano model kontroli zastosowany w naszym systemie (opracowany w programie MATLAB Simulink). Przedstawione są wyniki symulacji użycia systemu do sterowania czterowirnikowym BSP w celu jego przemieszczenia się do pożądanej lokalizacji oraz wzdłuż pożądanej trajektorii. Wyniki tych symulacji potwierdzają wniosek, że oparty na tym modelu system sterowania dla czterowirnikowego BSP może z powodzeniem spełnić swoje zadanie również w warunkach rzeczywistych.
    Źródło:
    Transactions on Aerospace Research; 2021, 3 (264); 58-70
    0509-6669
    2545-2835
    Pojawia się w:
    Transactions on Aerospace Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fuzzy feedback linearizing controller and its equivalence with the fuzzy nonlinear internal model control structure
    Autorzy:
    Boukezzoula, R.
    Galichet, S.
    Foulloy, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/929632.pdf
    Data publikacji:
    2007
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    sterowanie rozmyte
    sterowanie odwrotne
    sterowanie wewnętrzne
    fuzzy control
    inverse control
    feedback linearization
    internal model control
    Opis:
    This paper examines the inverse control problem of nonlinear systems with stable dynamics using a fuzzy modeling approach. Indeed, based on the ability of fuzzy systems to approximate any nonlinear mapping, the nonlinear system is represented by a Takagi-Sugeno (TS) fuzzy system, which is then inverted for designing a fuzzy controller. As an application of the proposed inverse control methodology, two popular control structures, namely, feedback linearization and Nonlinear Internal Model Control (NIMC) are investigated. Moreover, the paper points out that, under some conditions, both of the control structures are equivalent and naturally implement a Smith predictor in the presence of time delays.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2007, 17, 2; 233-248
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Nonlinear state-space predictive control with on-line linearisation and state estimation
    Autorzy:
    Ławryńczuk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/330330.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    process control
    model predictive control
    nonlinear state space model
    extended Kalman filter
    online linearization
    proces sterowania
    model sterowania predykcyjnego
    model przestrzeni stanów
    rozszerzony filtr Kalmana
    Opis:
    This paper describes computationally efficient model predictive control (MPC) algorithms for nonlinear dynamic systems represented by discrete-time state-space models. Two approaches are detailed: in the first one the model is successively linearised on-line and used for prediction, while in the second one a linear approximation of the future process trajectory is directly found on-line. In both the cases, as a result of linearisation, the future control policy is calculated by means of quadratic optimisation. For state estimation, the extended Kalman filter is used. The discussed MPC algorithms, although disturbance state observers are not used, are able to compensate for deterministic constant-type external and internal disturbances. In order to illustrate implementation steps and compare the efficiency of the algorithms, a polymerisation reactor benchmark system is considered. In particular, the described MPC algorithms with on-line linearisation are compared with a truly nonlinear MPC approach with nonlinear optimisation repeated at each sampling instant.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2015, 25, 4; 833-847
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oligopolistic market: stability conditions of the equilibrium point of the generalized Cournot-Puu model
    Autorzy:
    Iwaszczuk, N.
    Kavalets, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/410692.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    oligopoly
    duopoly
    generalized Cournot-Puu model
    Cournot equilibrium
    linearization of the system
    stability
    Routh-Hurwitz procedure
    Opis:
    The paper presents a model describing the behavior of participants of the oligopolistic market. Economic model of the oligopoly – a generalized Cournot-Puu model is constructed. Notion of Cournot equilibrium is introduced. Study on the stability of the equilibrium point of the constructed model is described. As an example, the model of duopoly is considered in detail.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2013, 2, 1; 15-22
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design of robust, nonlinear control system of the ship course angle, in a model following control (MFC) structure based on an input-output linearization
    Projektowanie odpornego, nieliniowego układu regulacji kąta kursu statku w strukturze MFC z linearyzacją typu wejście-wyjście
    Autorzy:
    Brzózka, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/359751.pdf
    Data publikacji:
    2012
    Wydawca:
    Akademia Morska w Szczecinie. Wydawnictwo AMSz
    Tematy:
    regulacja kursu statku
    sterowanie z modelem
    linearyzacja wejście-wyjście
    ship course control
    model following control (MFC)
    input-output linearization
    Opis:
    The paper presents a designing procedure of controllers in the structure of tracking model (Model Following Control, MFC) for nonlinear model of a ship as an object of the course angle control. In the article feedback linearization method for known nonlinearity in the input-output channel of plant has been used. Ideal linearization in the classical control system occurs only when the design nonlinearity of the model and the object are identical. Therefore, the article proposes the use of MFC structure, which is able to compensate for differences of non-linear characteristics of the process and model.
    Artykuł przedstawia procedurę projektowania regulatorów w strukturze ze śledzeniem modelu (Model Followig Control, MFC) dla nieliniowego modelu statku, jako obiektu regulacji kąta kursu. W artykule została wykorzystana metoda linearyzacji z ujemnym sprzężeniem zwrotnym dla znanej nieliniowości modelu obiektu w torze wejście-wyjście. Idealna linearyzacja w klasycznym układzie regulacji zachodzi jedynie wtedy, gdy projektowe nieliniowości modelu i obiektu są identyczne. Dlatego też w artykule zaproponowano zastosowanie układu MFC, który jest w stanie skompensować różnice nieliniowych charakterystyk procesu i jego modelu.
    Źródło:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie; 2012, 30 (102); 25-29
    1733-8670
    2392-0378
    Pojawia się w:
    Zeszyty Naukowe Akademii Morskiej w Szczecinie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-12 z 12

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies