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    Wyświetlanie 1-27 z 27
    Tytuł:
    Fast controls and minimum time
    Autorzy:
    Aze, D.
    Carja, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/206035.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    sterowalność
    controllability
    minimum norm
    minimum time function
    rank condition
    Opis:
    A relationship between the minimum time function and the minimum norm control presented in Carja (1993) is further analysed. A new approach to obtaining the estimates for fast controls is given.
    Źródło:
    Control and Cybernetics; 2000, 29, 4; 887-894
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimizing the Linear Quadratic Minimum-Time Problem for Discrete Distributed Systems
    Autorzy:
    Rachik, M.
    Abdelhak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/907998.pdf
    Data publikacji:
    2002
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    informatyka
    discrete distributed systems
    time-delay systems
    minimum time
    optimal control
    Opis:
    With reference to the work of Verriest and Lewis (1991) on continuous finite-dimensional systems, the linear quadratic minimum-time problem is considered for discrete distributed systems and discrete distributed time delay systems. We treat the problem in two variants, with fixed and free end points. We consider a cost functional J which includes time, energy and precision terms, and then we investigate the optimal pair (N,u) which minimizes J.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2002, 12, 2; 153-160
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sufficient optimality conditions for a bang-singular extremal in the minimum time problem
    Autorzy:
    Poggiolini, L.
    Stefani, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/969613.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    minimum time
    second order sufficient conditions
    bang-singular arc
    Hamiltonian formalism
    Opis:
    The paper gives second order sufficient conditions for the strong local optimality of a bang-singular extremal in a minimum time problem. The conditions are given in terms of regularity assumptions on the extremal and of the coercivity of the extended second variation associated to the minimum time problem with fixed end-points on the singular arc. The conditions are close to the necessary ones in the usual sense, namely we require strict inequalities where necessary conditions have mild inequalities.
    Źródło:
    Control and Cybernetics; 2008, 37, 2; 469-490
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimal velocity in the race over variable slope trace
    Autorzy:
    Maroński, R.
    Samoraj, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/307299.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    czas jazdy
    trasa
    rower
    minimum-time running
    variable slope trace
    velocity
    Opis:
    The minimum-time running problem is reconsidered. The time of covering a given distance is minimized. The function that should be found is the runner’s velocity that varies with the distance. The Hill-Keller model of motion is employed. It is based on the Newton second law and an equation of power balance. The new element of the current approach is that the trace slope angle varies with the distance. The problem is formulated and solved in optimal control applying the Chebyshev direct pseudospectral method. The essential finding is that the optimal velocity during the cruise is constant regardless of the local slope of the terrain. Such result is valid if the inequality constraints imposed on the propulsive force or the energy are not active.
    Źródło:
    Acta of Bioengineering and Biomechanics; 2015, 17, 2; 149-153
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The minimal-time growth problem and 'very strong' turnpike theorem
    Autorzy:
    Panek, Emil
    Powiązania:
    https://bibliotekanauki.pl/articles/2034077.pdf
    Data publikacji:
    2021-03-30
    Wydawca:
    Główny Urząd Statystyczny
    Tematy:
    stationary Gale economy
    von Neumann equilibrium
    minimum-time growth problem
    turnpike effect
    Opis:
    This paper refers to the author's previous work, in which the ‘weak’ turnpike theorem in the stationary Gale economy was proved. This theorem states that each optimal growth process {y*(t)}t*1t=0 that leads the economy in the shortest possible time t*1 from the (initial) state of y0 to the set of target/postulated states Y1 almost always runs in the neighbourhood of the production turnpike, where the economy remains in a specific dynamic equilibrium (peak growth equilibrium). This paper presents a proof of the ‘very strong’ turnpike theorem in the stationary Gale economy, which states that if the optimal process (the solution to the minimaltime growth problem) reaches a turnpike in a certain period of time tˇ < t*1 - 1, then it stays on it everywhere else, except for, at most, final period t*1. The obtained result confirms the wellknown Samuelson hypothesis about the specific turnpike stability of optimal growth paths in multiproduct/multisectoral von Neumann-Leontief-Gale-type models, also in the case where the growth criterion is not the (normally assumed) utility of production but the time needed by the economy to achieve the postulated target level or volume of production.
    Źródło:
    Przegląd Statystyczny; 2021, 68, 4; 45-58
    0033-2372
    Pojawia się w:
    Przegląd Statystyczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The minimal-time growth problem and turnpike effect in the stationary Gale economy
    Autorzy:
    Panek, Emil
    Powiązania:
    https://bibliotekanauki.pl/articles/1837720.pdf
    Data publikacji:
    2021-03-30
    Wydawca:
    Uniwersytet Ekonomiczny w Poznaniu
    Tematy:
    stationary Gale economy
    minimum-time growth problem
    von Neumann equilibrium
    production turnpike
    von Neumann ray
    Opis:
    In mathematical economics there is a number of so called “turnpike theorems” proved mainly on the basis of multiproduct models of economic dynamics. According to these theorems, all optimal paths of economic growth over a long period of time converge to a certain path (turnpike) in which the economy achieves the highest growth rate while remaining in a specific dynamic (von Neumann) equilibrium. The article refers to this trend and presents some properties of optimal growth processes in the Gale-type model of the stationary economy when the quality criterion of growth processes is not the utility of production-which is normally postulated in the turnpike theory-but the time needed by the economy to achieve the desired final state, e.g. the level of production or production value. According to the author's knowledge, the idea of using time as a criterion for growth in turnpike theory (especially in Gale-type economy) is innovative. It has been proven that changing the growth criterion does not deprive the Gale economy of its asymptotic / turnpike properties.
    Źródło:
    Economics and Business Review; 2021, 7, 1; 7-25
    2392-1641
    Pojawia się w:
    Economics and Business Review
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of gliders trajectory for given thermal conditions
    Optymalizacja trajektorii szybowca dla zadanych warunków termicznych
    Autorzy:
    Rogowski, K.
    Maroński, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/140057.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lot ślizgowy
    zagadnienie minimalno-czasowe
    pseudospektralna metoda Czebyszewa
    soaring flight
    minimum-time problem
    pseudospectral Chebyshev's method
    Opis:
    The minimum-time problem for a glider flying in the vertical plane is considered. The glider is regarded as a particle moving in the atmosphere in given thermal conditions. The problem is formulated in optimal control and solved using direct pseudospectral Chebysev's method. The data are taken for the Word Class Glider PW-5 "Smyk". Computed optimum results are compared with glider's trajectories from the Second Domestic Glider Championship 2006, Suwałki, Poland.
    Rozważono zagadnienie minimalno-czasowe ruchu szybowca w płaszczyźnie pionowej. Szybowiec jest modelowany jak uskrzydlony punkt materialny poruszający się w atmosferze przy zadanych warunkach termicznych. Zagadnienie zostało sformułowane za pomocą formalizmu teorii sterowania optymalnego. Rozwiązano je bezpośrednią pseudospektralną metodą Czebyszewa. Wykorzystano dane dla szybowca Klasy Światowej PW-5 "Smyk". Wyznaczone trajektorie optymalne porównano z trajektoriami uzyskanymi w czasie Drugich Krajowych Zawodów Szybowcowych w Suwałkach w 2006 roku.
    Źródło:
    Archive of Mechanical Engineering; 2011, LVIII, 1; 11-25
    0004-0738
    Pojawia się w:
    Archive of Mechanical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimum variance control of discrete-time and continuous-time LTI MIMO systems - a new unified framework
    Autorzy:
    Hunek, W. P.
    Latawiec, K. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/969698.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    minimum variance control
    continuous-time minimum variance control
    theory of emulation
    multivariable systems
    multivariable zeros
    Opis:
    This paper presents a new uniform framework for solving the problem of minimum variance control of both discrete-time and continuous-time linear time-invariant multi-input multi-output systems described by general input-output models. Rather surprisingly, it is shown that the continuous-time case can be analyzed and synthesized without the necessity of involving the celebrated (and rather complex) theory of output predictor emulation, so that quite similar, simple solution is obtained like for the well-known discrete-time case.
    Źródło:
    Control and Cybernetics; 2009, 38, 3; 609-624
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ultra Low Power Design for Digital CMOS Circuits Operating Near Threshold
    Autorzy:
    Kalra, S.
    Bhattacharyya, A. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/226500.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    energy efficiency
    ultra-low power
    EKV
    minimum energy point
    minimum delay point temperature to time generator
    Opis:
    Circuits operating in the subthreshold region are synonymous to low energy operation. However, the penalty in performance is colossal. In this paper, we investigate how designing in moderate inversion region recuperates some of that lost performance, while remaining very near to the minimum energy point. An α power based minimum energy delay modeling that is continuous over the weak, moderate, and strong inversion regions is presented. The value of α is obtained through interpolation following EKV model. The effect of supply voltage and device sizing on the minimum energy and performance is determined. The proposed model is utilized to design a temperature to time generator at 32nm technology node as the application of the proposed model. The abstract goes here.
    Źródło:
    International Journal of Electronics and Telecommunications; 2017, 63, 4; 369-374
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Design optimal rural road network using GIS
    Autorzy:
    Modinpuroju, A.
    Prasad, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/223559.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    rural roads
    optimal road network
    minimum travel time
    facility index
    GIS
    drogi wiejskie
    optymalna sieć dróg
    minimalny czas podróży
    indeks obiektu
    Opis:
    To have an effective development among the isolated, remote areas, rural transportation is recognized as a key factor. Efficient rural transportation depends largely on a well-knit road network to provide accessibility and mobility in rural areas. This work affords an applied method for the development of rural road networks in rural areas of developing countries. The proposed methodology enables to determine nodal points in the rural road network based on the facility index of the settlements. The rural road network is generated by connecting the nodal points by minimum travel time path in Geographical Information System (GIS). Spatial analysis is carried out in the study area to identify the Desirable Coverage Distance of the Facility(DCDF). The Village Facility Index (VFI) is calculated by considering the desirable coverage distance. The suggested methodology is simple and practical, hence, highly applicable to real-world scenarios, as demonstrated in the definition of the road network for the rural areas.
    Źródło:
    Archives of Transport; 2017, 41, 1; 63-71
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multiobjective optimization of multipass turning machining process using the Genetic Algorithms solution
    Autorzy:
    Amiolemhen, Patrick Ejebheare
    Eseigbe, Joshua Ahurome
    Powiązania:
    https://bibliotekanauki.pl/articles/95335.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    turning process
    genetic algorithms
    minimum production cost
    minimum production time
    single-objective model
    multi-objective model
    toczenie
    proces toczenia
    algorytmy genetyczne
    minimalny koszt produkcji
    minimalny czas produkcji
    model wielokryterialny
    Opis:
    The study involves the development of multi-objective optimization model for turning machining process. This model was developed using a GA - based weighted-sum of minimum production cost and time criteria of multipass turning machining process subject to relevant technological/practical constraints. The results of the single-objective machining process optimization models for the multipass turning machining process when compared with those of multi-objective machining process model yielded the minimum production cost and minimum production time as $5.775 and 8.320 min respectively (and the corresponding production time and production cost as 12.996 min and $6.992, respectively), while those of the multi-objective machining process optimization model were $5.841and 9.097 min. Thus, the multi-objective machining process optimization model performed better than each of the single-objective model for the two criteria of minimum production cost and minimum production time respectively. The results also show that minimum production time model performs better than the minimum production cost model. For the example considered, the multi-objective model gave a lower production time of 30.0% than the corresponding production time obtained from the minimum production cost model, while it gave a lower production cost of 16.46% than the corresponding cost obtained by the minimum production time model.
    Źródło:
    Journal of Mechanical and Energy Engineering; 2019, 3, 2; 97-108
    2544-0780
    2544-1671
    Pojawia się w:
    Journal of Mechanical and Energy Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Controllability, reachability and minimum energy control of fractional discrete-time linear systems with multiple delays in state
    Autorzy:
    Busłowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/200470.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    linear systems
    fractional
    discrete-time
    time-delay
    controllability
    reachability
    minimum energy control
    Opis:
    In the paper the problems of controllability, reachability and minimum energy control of a fractional discrete-time linear system with delays in state are addressed. A general form of solution of the state equation of the system is given and necessary and sufficient conditions for controllability, reachability and minimum energy control are established. The problems are considered for systems with unbounded and bounded inputs. The considerations are illustrated by numerical examples. Influence of a value of the fractional order on an optimal value of the performance index of the minimum energy control is examined on an example.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 2; 233-239
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimum energy control of positive continuous-time linear systems with bounded inputs
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/141497.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    positive
    continuous-time
    minimum energy control
    bounded inputs
    procedure
    Opis:
    The minimum energy control problem for the positive continuous-time linear systems with bounded inputs is formulated and solved. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by a numerical example.
    Źródło:
    Archives of Electrical Engineering; 2014, 63, 1; 19-27
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimum energy control of positive discrete-time linear systems with bounded inputs
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/229247.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    positive
    discrete-time
    minimum energy control
    bounded inputs
    procedure
    Opis:
    The minimum energy control problem for the positive discrete-time linear systems with bounded inputs is formulated and solved. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by a numerical example.
    Źródło:
    Archives of Control Sciences; 2013, 23, 2; 205-211
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Necessary and sufficient conditions for the minimum energy control of positive discrete-time linear systems with bounded inputs
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/202217.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    positive
    discrete-time
    minimum energy control
    bounded inputs
    procedure
    Opis:
    The minimum energy control problem for the positive discrete-time linear systems with bounded inputs is formulated and solved. Necessary and sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by a numerical example.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 1; 85-89
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An extension of Klamka’s method of minimum energy control to fractional positive discrete-time linear systems with bounded inputs
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/200464.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    fractional
    discrete-time
    positive
    minimum energy control
    bounded inputs
    procedure
    Opis:
    The Klamka’s method of minimum energy control problem is extended to fractional positive discrete-time linear systems with bounded inputs. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by numerical example.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 2; 227-231
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimum energy control of descriptor discrete-time linear systems by the use of Weierstrass-Kronecker decomposition
    Autorzy:
    Kaczorek, T.
    Borawski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/229539.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    descriptor
    discrete-time
    linear
    system
    Weierstrass-Kronecker decomposition
    minimum energy control
    Opis:
    The minimum energy control problem for the descriptor discrete-time linear systems by the use of Weierstrass-Kronecker decomposition is formulated and solved. Necessary and sufficient conditions for the reachability of descriptor discrete-time linear systems are given. A procedure for computation of optimal input and a minimal value of the performance index is proposed and illustrated by a numerical example.
    Źródło:
    Archives of Control Sciences; 2016, 26, 2; 177-187
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An extension of Klamka’s method to positive descriptor discrete-time linear systems with bounded inputs
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/229979.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    descriptor
    positive
    discrete-time
    linear
    system
    Weierstrass-Kronecker decomposition
    minimum energy control
    Opis:
    The minimum energy control problem for the positive descriptor discrete-time linear systems with bounded inputs by the use of Weierstrass-Kronecker decomposition is formulated and solved. Necessary and sufficient conditions for the positivity and reachability of descriptor discrete-time linear systems are given. Conditions for the existence of solution and procedure for computation of optimal input and the minimal value of the performance index is proposed and illustrated by a numerical example.
    Źródło:
    Archives of Control Sciences; 2018, 28, 2; 255-268
    1230-2384
    Pojawia się w:
    Archives of Control Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimum energy control of positive time-varying linear systems
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/387425.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    positive
    continuous-time
    minimum energy control
    procedure
    czas ciągły
    układ liniowy
    przykłady numeryczne
    Opis:
    The minimum energy control problem for the positive time-varying linear systems is formulated and solved. Sufficient conditions for the existence of solution to the problem are established. A procedure for solving of the problem is proposed and illustrated by a numerical example.
    Źródło:
    Acta Mechanica et Automatica; 2015, 9, 4; 225-228
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimum energy control of positive continuous-time linear systems with bounded inputs
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/329898.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    positive system
    continuous time
    minimum energy control
    bounded inputs
    system dodatni
    układ ciągły
    sterowanie energooszczędne
    Opis:
    The minimum energy control problem for positive continuous-time linear systems with bounded inputs is formulated and solved. Sufficient conditions for the existence of a solution to the problem are established. A procedure for solving the problem is proposed and illustrated with a numerical example.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2013, 23, 4; 725-730
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Reachability and minimum energy control of positive discrete-time linear systems with multiple delays in state and control
    Osiągalność i sterowanie z minimalną energią liniowych dodatnich układów dyskretnych z wieloma opóźnieniami stanu i sterowania
    Autorzy:
    Kaczorek, T.
    Busłowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/153534.pdf
    Data publikacji:
    2007
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    liniowy układ dodatni
    dyskretny
    opóźnienie
    osiągalność
    sterowanie z minimalną energią
    linear positive systems
    discrete-time systems
    time-delay
    reachability
    minimum energy control
    Opis:
    A notion of positive linear discrete-time systems with multiple delays in state and control is introduced. The necessary and sufficient conditions for positivity, reachability and minimum energy control are given. Considerations are illustrated by example.
    W pracy podano warunki, przy spełnieniu których liniowy dyskretny układ z wieloma opóźnieniami zmiennych stanu i sterowania jest układem dodatnim. Podano też warunki konieczne i wystarczające osiągalności oraz sterowania z minimalną energią. Rozważania zilustrowano przykładem.
    Źródło:
    Pomiary Automatyka Kontrola; 2007, R. 53, nr 10, 10; 40-44
    0032-4140
    Pojawia się w:
    Pomiary Automatyka Kontrola
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimum energy control of fractional positive continuous-time linear systems using Caputo-Fabrizio definition
    Autorzy:
    Kaczorek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/200714.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    kontrola zużycia energii
    ograniczone wejścia
    definicja Caputo-Rabrizio
    fractional positive continuous-time system
    minimum energy control
    bounded inputs
    Opis:
    The Caputo-Fabrizio definition of the fractional derivative is applied to minimum energy control of fractional positive continuous- time linear systems with bounded inputs. Conditions for the reachability of standard and positive fractional linear continuous-time systems are established. The minimum energy control problem for the fractional positive linear systems with bounded inputs is formulated and solved.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 1; 45-51
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Control zeros and maximum-accuracy / maximum-speed control of LTI MIMO discrete-time systems
    Autorzy:
    Latawiec, K. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/970092.pdf
    Data publikacji:
    2005
    Wydawca:
    Polska Akademia Nauk. Instytut Badań Systemowych PAN
    Tematy:
    układ wielowymiarowy
    multivariable systems
    system zeros
    minimum phase systems
    cheap control
    perfect regulation
    perfect filtering
    time-optimal control
    Opis:
    Based on new definitions of "control zeros" and minimum phase property for possibly nonsquare LTI MIMO discrete-time systems, generalizations of perfect regulation and perfect filtering are presented both for polynomial matrix and state space models. Consequently, general equivalence results are announced for multi-step and single-step optimal controls as well as for maximum-accuracy and maximum-speed controls for LTI MIMO discrete-time systems. The latter is made visible after the introduction of a new-category of time-optimal control, namely infimum-time control. The equivalence conditions refer to the system's right-invertibility and the (newly-defined) minimum phase behavior, which demonstrates the usefulness of the new approach to zeros of multi variable systems.
    Źródło:
    Control and Cybernetics; 2005, 34, 2; 453-475
    0324-8569
    Pojawia się w:
    Control and Cybernetics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stability analysis for discrete-time fractional-order LTI state-space systems. Part II: New stability criterion for FD-based systems
    Autorzy:
    Stanisławski, R.
    Latawiec, K. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/200325.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Grünwald-Letnikov fractional difference
    discrete-time fractional order system
    stability criterion
    non-minimum phase system
    closed loop stability
    Opis:
    This paper presents a series of new results on the asymptotic stability of discrete-time fractional difference (FD) state space systems and their finite-memory approximations called finite FD (FFD) and normalized FFD (NFFD) systems. In Part I of the paper, new necessary and sufficient stability conditions have been given in a unified form for FD, FFD and NFFD-based systems. Part II offers a new, simple, ultimate stability criterion for FD-based systems. This gives rise to the introduction of new definitions of the so-called f-poles and f-zeros for FD-based systems, which are used in the closed-loop stability analysis for FD-based systems and, approximately, for FFD/NFFD-based ones.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 363-370
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analytical Design of Stable Continuous-Time Generalised Predictive Control
    Autorzy:
    Kowalczuk, Z.
    Suchomski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/908310.pdf
    Data publikacji:
    1999
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    sterowanie predykcyjne
    stabilność
    projektowanie systemów
    continuous-time systems
    design specifications
    non-minimum-phase systems
    predictive control
    stability
    system design
    Opis:
    With a recently renewed interest in the continuous-time approach to control system design the continuous-time generalised predictive control (CGPC) is also worth considering. The main objective of this presentation is the development of an analytical perspective that results in explicit design procedures for stable control of both minimum-phase and non-minimum-phase SISO systems. The basic project idea is founded on a set of closed-loop prototype characteristics with definite time-domain specifications.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 1999, 9, 1; 53-100
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Minimum energy control of descriptor fractional discrete-time linear systems with two different fractional orders
    Autorzy:
    Sajewski, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/330617.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    minimum energy control
    descriptor system
    fractional system
    discrete-time linear system
    sterowanie energooszczędne
    układ deskryptorowy
    układ ułamkowy
    liniowy układ dyskretny
    Opis:
    Reachability and minimum energy control of descriptor fractional discrete-time linear systems with different fractional orders are addressed. Using the Weierstrass–Kronecker decomposition theorem of the regular pencil, a solution to the state equation of descriptor fractional discrete-time linear systems with different fractional orders is given. The reachability condition of this class of systems is presented and used for solving the minimum energy control problem. The discussion is illustrated with numerical examples.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2017, 27, 1; 33-41
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Novel optimal recursive filter for state and fault estimation of linear stochastic systems with unknown disturbances
    Autorzy:
    Khémiri, K.
    Ben Hmida, F.
    Ragot, J.
    Gossa, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/930170.pdf
    Data publikacji:
    2011
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    filtracja Kalmana
    estymacja stanu
    zakłócenie nieznane
    system liniowy
    system dyskretno-czasowy
    Kalman filtering
    minimum variance estimation
    state estimation
    fault estimation
    unknown disturbances
    linear discrete time systems
    Opis:
    This paper studies recursive optimal filtering as well as robust fault and state estimation for linear stochastic systems with unknown disturbances. It proposes a new recursive optimal filter structure with transformation of the original system. This transformation is based on the singular value decomposition of the direct feedthrough matrix distribution of the fault which is assumed to be of arbitrary rank. The resulting filter is optimal in the sense of the unbiased minimum-variance criteria. Two numerical examples are given in order to illustrate the proposed method, in particular to solve the estimation of the simultaneous actuator and sensor fault problem and to make a comparison with the existing literature results.
    Źródło:
    International Journal of Applied Mathematics and Computer Science; 2011, 21, 4; 629-637
    1641-876X
    2083-8492
    Pojawia się w:
    International Journal of Applied Mathematics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-27 z 27

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