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    Wyświetlanie 1-3 z 3
    Tytuł:
    An improvement of Gamma approximation for reduction of continuous interval systems
    Autorzy:
    Bokam, Jagadish Kumar
    Singh, Vinay Pratap
    Devarapalli, Ramesh
    García Márquez, Fausto Pedro
    Powiązania:
    https://bibliotekanauki.pl/articles/1409387.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    continuous interval systems
    Kharitonov polynomials
    Routh approximation
    modelling
    SISO systems
    MIMO systems
    Opis:
    In recent, modeling practical systems as interval systems is gaining more attention of control researchers due to various advantages of interval systems. This research work presents a new approach for reducing the high-order continuous interval system (HOCIS) utilizing improved Gamma approximation. The denominator polynomial of reduced-order continuous interval model (ROCIM) is obtained using modified Routh table, while the numerator polynomial is derived using Gamma parameters. The distinctive features of this approach are: (i) It always generates a stable model for stable HOCIS in contrast to other recent existing techniques; (ii) It always produces interval models for interval systems in contrast to other relevant methods, and, (iii) The proposed technique can be applied to any system in opposite to some existing techniques which are applicable to second-order and third-order systems only. The accuracy and effectiveness of the proposed method are demonstrated by considering test cases of single-inputsingle-output (SISO) and multi-input-multi-output (MIMO) continuous interval systems. The robust stability analysis for ROCIM is also presented to support the effectiveness of proposed technique.
    Źródło:
    Archives of Control Sciences; 2021, 31, 2; 347-373
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On optimal control problem subject to fractional order discrete time singular systems
    Autorzy:
    Chiranjeevi, Tirumalasetty
    Biswas, Raj Kumar
    Devarapalli, Ramesh
    Babu, Naladi Ram
    García Márquez, Fausto Pedro
    Powiązania:
    https://bibliotekanauki.pl/articles/2083465.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fractional optimal control problem
    discrete time singular system
    fractional derivative
    Hamiltonian technique
    Opis:
    In this work, we present optimal control formulation and numerical algorithm for fractional order discrete time singular system (DTSS) for fixed terminal state and fixed terminal time endpoint condition. The performance index (PI) is in quadratic form, and the system dynamics is in the sense of Riemann-Liouville fractional derivative (RLFD). A coordinate transformation is used to convert the fractional-order DTSS into its equivalent non-singular form, and then the optimal control problem (OCP) is formulated. The Hamiltonian technique is used to derive the necessary conditions. A solution algorithm is presented for solving the OCP. To validate the formulation and the solution algorithm, an example for fixed terminal state and fixed terminal time case is presented.
    Źródło:
    Archives of Control Sciences; 2021, 31, 4; 849-863
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Allocation of real power generation based on computing over all generation cost: an approach of Salp Swarm Algorithm
    Autorzy:
    Devarapalli, Ramesh
    Sinha, Nikhil Kumar
    Rao, Bathina Venkateswara
    Knypiński, Łukasz
    Lakshmi, Naraharisetti Jaya Naga
    García Márquez, Fausto Pedro
    Powiązania:
    https://bibliotekanauki.pl/articles/1841291.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    economic load dispatch
    heuristic algorithms
    optimization
    Particle Swarm
    Algorithm
    Salp Swarm Algorithm
    ekonomiczna wysyłka ładunku
    algorytmy heurystyczne
    optymalizacja
    rój cząstek
    algorytm
    Opis:
    Economic Load Dispatch (ELD) is utilized in finding the optimal combination of the real power generation that minimizes total generation cost, yet satisfying all equality and inequality constraints. It plays a significant role in planning and operating power systems with several generating stations. For simplicity, the cost function of each generating unit has been approximated by a single quadratic function. ELD is a subproblem of unit commitment and a nonlinear optimization problem. Many soft computing optimization methods have been developed in the recent past to solve ELD problems. In this paper, the most recently developed population-based optimization called the Salp Swarm Algorithm (SSA) has been utilized to solve the ELD problem. The results for the ELD problem have been verified by applying it to a standard 6-generator system with and without due consideration of transmission losses. The finally obtained results using the SSA are compared to that with the Particle Swarm Optimization (PSO) algorithm. It has been observed that the obtained results using the SSA are quite encouraging.
    Źródło:
    Archives of Electrical Engineering; 2021, 70, 2; 337-349
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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