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Wyszukujesz frazę "heuristic control" wg kryterium: Temat

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    Wyświetlanie 1-8 z 8
    Tytuł:
    Heating control of a finite rod with a mobile source
    Autorzy:
    Jilavyan, Samvel H.
    Grigoryan, Edmon R.
    Khurshudyan, Asatur Zh.
    Powiązania:
    https://bibliotekanauki.pl/articles/1409386.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    null-controllability
    mobile control
    nonlinear constraints
    triangular wave
    rectangular wave
    Green’s function approach
    heuristic control
    lack of exact controllability
    Opis:
    The Green’s function approach is applied for studying the exact and approximate null-controllability of a finite rod in finite time by means of a source moving along the rod with controllable trajectory. The intensity of the source remains constant. Applying the recently developed Green’s function approach, the analysis of the exact null-controllability is reduced to an infinite system of nonlinear constraints with respect to the control function. A sufficient condition for the approximate null-controllability of the rod is obtained. Since the exact solution of the system of constraints is a long-standing open problem, some heuristic solutions are used instead. The efficiency of these solutions is shown on particular cases of approximate controllability.
    Źródło:
    Archives of Control Sciences; 2021, 31, 2; 417-430
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prediction control systems in marine applications
    Autorzy:
    Gierusz, W.
    Miller, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/117282.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    control system
    marine applications
    ship motion
    automatic system
    Model Predictive Control (MPC)
    multiple input
    Multiple Output (MIMO)
    Model Predictive Heuristic Control (MPHC)
    Generalized Predictive Control (GPC)
    Opis:
    The paper presents one of the modern control methods used for steering of the ship motion. The different automatic systems used to navigate the vessels are described at the beginning. Next, prediction control methodology is presented and multidimensional MPC regulator applied to steering of the training ship is shown as a technical product. Tests results from the real-time experiments with the mentioned controller are presented at the end of the article.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 2; 361-366
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heuristic control of nonlinear power systems: Application to the infinite bus problem
    Autorzy:
    Hossain, Musabbir Md
    Khurshudyan, Asatur Zh.
    Powiązania:
    https://bibliotekanauki.pl/articles/229161.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    power systems
    nonlinear control
    heuristic method
    harmonic control
    piecewise constant control
    Opis:
    In this paper, we apply the heuristic method for determination of control functions for controllability analysis of nonlinear power systems. The problem of control of quasi-linear systems under proper assumptions on the nonlinear term is considered in the general statement. Making use of the Green’s function solution of nonlinear systems, the exact and approximate controllability conditions are expressed in terms of unknown controls in an explicit form. The way of resolving controls determination is discussed. As a particular application, a one-machine infinite-bus system is considered described by a coupled system of three first order ordinary differential equations. Two heuristic forms of admissible controls are considered providing approximate controllability within the same amount of time having different intensities. Results of numerical simulations are presented and discussed.
    Źródło:
    Archives of Control Sciences; 2019, 29, 2; 279-288
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hybrid optimization process applied to tuning of Dynamic Matrix Control: atudy case with DC motor
    Autorzy:
    Carvalho, D. F. de
    Ganzaroli, C. A.
    Couto, L. do
    Dias, R. N. H. M.
    Calixto, W. P.
    Powiązania:
    https://bibliotekanauki.pl/articles/136171.pdf
    Data publikacji:
    2017
    Wydawca:
    EEEIC International Barbara Leonowicz Szabłowska
    Tematy:
    predictive control
    deterministic optimization
    heuristic optimization
    hybrid optimization
    DC motor
    Opis:
    This paper presents study about Dynamic Matrix Control (DMC) controller applied to speed control of DC motor. DMC controller parameters (prediction horizon, control horizon and damping rate of reference) are obtained through optimization methods employing heuristic, deterministic and hybrid strategies. The use of advanced control technique combined with using of optimization methods aims to achieve highly efficient control, reducing the transient state period and variations in steady state. These methods were applied on a simulation model in order to verify which one provides better control results.
    Źródło:
    Transactions on Environment and Electrical Engineering; 2017, 2, 2; 24-30
    2450-5730
    Pojawia się w:
    Transactions on Environment and Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Approach for the development of heuristic process planning tool for sequencing NC machining operations
    Autorzy:
    Berger, U.
    Kretschmann, R
    Arnold, K P
    Minhas, S
    Powiązania:
    https://bibliotekanauki.pl/articles/1395585.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Promocji Wiedzy
    Tematy:
    machining process planning
    NC (numerical control)
    graph theory
    heuristic algorithm
    Opis:
    This chapter deals with the process planning for sequencing NC (numerical control) machining operations. This task of selecting and ordering of machining operations is still done manually in principle. In order to overcome this problem, an approach for enabling the automatic preparation of work plans with methods known from the graph theory is introduced in this chapter. Therefore a work plan is mapped into a directed graph in a mathematically defined way. Based on that, it is possible to use algorithms to find the shortest path and a Hamiltonian path inside this directed graph as optimal sequenced solution under given requirements. Thus, the work plan is structured and re-ordered. Finally the corresponding NC machining code will be generated and distributed to the machinery.
    Źródło:
    Applied Computer Science; 2008, 4, 2; 17-41
    1895-3735
    Pojawia się w:
    Applied Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multi-strategy navigation for a mobile data acquisition platform using genetic algorithms
    Autorzy:
    Halal, F.
    Zaremba, M. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/950950.pdf
    Data publikacji:
    2017
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    genetic algorithms
    path planning
    monitoring system
    remote sensing
    navigation control
    heuristic search
    Opis:
    Monitoring of biological and chemical pollutants in large bodies of water requires the acquisition of a large number of in-situ measurements by a mobile sensor platform. Critical to this problem is an efficient path planning method, easily adaptable to different control strategies that ensure the collection of data of the greatest value. This paper proposes a deliberative path planning algorithm, which features the use of waypoints for a ship navigation trajectory that are generated by Genetic Algorithm (GA) based procedures. The global search abilities of Genetic Algorithms are combined with the heuristic local search in order to implement a navigation behaviour suitable to the required data collection strategy. The adaptive search system operates on multi-layer maps generated from remote sensing data, and provides the capacity for dealing with multiple classes of water pollutants. A suitable objective function was proposed to handle different sampling strategies for the collection of samples from multiple water pollutant classes. A region-of-interest (ROI) component was introduced to deal effectively with the large scale of search environments by pushing the search towards ROI zones. This resulted in the reduction of the search time and the computing cost, as well as good convergence to an optimal solution. The global path planning performance was further improved by multipoint crossover operators running in each GA generation. The system was developed and tested for inland water monitoring and trajectory planning of a mobile sample acquisition platform using commercially available satellite data.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2017, 11, 1; 30-41
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A new elastic scheduling task model in the node of a control and measurement system
    Autorzy:
    Miczulski, W.
    Powroźnik, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/220884.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    task scheduling
    elastic scheduling task model
    heuristic algorithms
    measurement and control systems
    time deadline fulfilment
    Opis:
    The paper presents a new elastic scheduling task model which has been used in the uniprocessor node of a control measuring system. This model allows the selection of a new set of periods for the occurrence of tasks executed in the node of a system in the case when it is necessary to perform additional aperiodic tasks or there is a need to change the time parameters of existing tasks. Selection of periods is performed by heuristic algorithms. This paper presents the results of the experimental use of an elastic scheduling model with a GRASP heuristic algorithm.
    Źródło:
    Metrology and Measurement Systems; 2013, 20, 1; 87-98
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exact and approximate distributed controllability of processes described by KdV and Boussinesq equations: The Green’s function approach
    Autorzy:
    Klamka, Jerzy
    Avetisyan, Ara S.
    Khurshudyan, Asatur Zh.
    Powiązania:
    https://bibliotekanauki.pl/articles/229650.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    KdV equation
    Boussinesq equation
    Frasca’s method
    short time expansion
    traveling wave
    heuristic method
    distributed control
    constrained controllability
    Opis:
    In this paper, we study the constrained exact and approximate controllability of traveling wave solutions of Korteweg-de Vries (third order) and Boussinesq (fourth order) semi-linear equations using the Green’s function approach. Control is carried out by a moving external source. Representing the general solution of those equations in terms of the Frasca’s short time expansion, system of constraints on the distributed control is derived for both types of controllability. Due to the possibility of explicit solution provided by the heuristic method, the controllability analysis becomes straightforward. Numerical analysis confirms theoretical derivations.
    Źródło:
    Archives of Control Sciences; 2020, 30, 1; 177-193
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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