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Wyszukujesz frazę "control theory" wg kryterium: Temat


Tytuł:
Controllability of dynamical systems. A survey
Autorzy:
Klamka, J.
Powiązania:
https://bibliotekanauki.pl/articles/202396.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
controllability
dynamical systems
control theory
Opis:
The main objective of this article is to review the major progress that has been made on controllability of dynamical systems over the past number of years. Controllability is one of the fundamental concepts in the mathematical control theory. This is a qualitative property of dynamical control systems and is of particular importance in control theory. A systematic study of controllability was started at the beginning of sixties in the last century, when the theory of controllability based on the description in the form of state space for both time-invariant and time-varying linear control systems was worked out. Roughly speaking, controllability generally means, that it is possible to steer a dynamical control system from an arbitrary initial state to an arbitrary final state using the set of admissible controls. It should be mentioned, that in the literature there are many different definitions of controllability, which strongly depend on a class of dynamical control systems and on the other hand on the form of admissible controls. Controllability problems for different types of dynamical systems require the application of numerous mathematical concepts and methods taken directly from differential geometry, functional analysis, topology, matrix analysis and theory of ordinary and partial differential equations and theory of difference equations. In the paper we use mainly state-space models of dynamical systems, which provide a robust and universal method for studying controllability of various classes of systems. Controllability plays an essential role in the development of modern mathematical control theory. There are various important relationships between controllability, stability and stabilizability of linear both finite-dimensional and infinite-dimensional control systems. Controllability is also strongly related to the theory of realization and so called minimal realization and canonical forms for linear time-invariant control systems such as the Kalmam canonical form, the Jordan canonical form or the Luenberger canonical form. It should be mentioned, that for many dynamical systems there exists a formal duality between the concepts of controllability and observability. Moreover, controllability is strongly connected with the minimum energy control problem for many classes of linear finite dimensional, infinite dimensional dynamical systems, and delayed systems both deterministic and stochastic. Finally, it is well known, that controllability concept has many important applications not only in control theory and systems theory, but also in such areas as industrial and chemical process control, reactor control, control of electric bulk power systems, aerospce engineering and recently in quantum systems theory.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 335-342
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A mathematical analysis of a smart-beam which is equipped with piezoelectric actuators
Autorzy:
Destuynder, P.
Powiązania:
https://bibliotekanauki.pl/articles/205504.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
teoria sterowania
beam theory
control theory
smart structures
Opis:
First of all, a brief reminder on piezoelectric effect is given. Then it is applied to a beam equipped with such actuators. The influence of tile shape and location is discussed. A smart beam model is finally presented and analyzed. The controllability is carefully examined in the framework of the H.U.M. method of Lions (1988). Let us also underline that the asymptotic harmonic behaviour of the structure is videly used.
Źródło:
Control and Cybernetics; 1999, 28, 3; 503-530
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Geometric optimal control and two-level dissipative quantum systems
Autorzy:
Bonnard, B.
Sugny, D.
Powiązania:
https://bibliotekanauki.pl/articles/970909.pdf
Data publikacji:
2009
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
optimal control theory
conjugate and cut loci
quantum mechanics
Opis:
The objective of this article is to present techniques of geometric time-optimal control developed to analyze the control of two-level dissipative quantum systems. Combined with numerical simulations they allow to compute the time-minimal control using a shooting method. The robustness with respect to initial conditions and dissipative parameters is also analyzed using a continuation method.
Źródło:
Control and Cybernetics; 2009, 38, 4A; 1053-1080
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Solving a permutation problem by a fully polynomial-time approximation scheme
Autorzy:
Gawiejnowicz, Stanisław
Kurc, Wiesław
Pankowska, Lidia
Powiązania:
https://bibliotekanauki.pl/articles/729290.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:
combinatorial optimization
discrete control theory
fully polynomial-time approximation scheme
Opis:
For a problem of optimal discrete control with a discrete control set composed of vertices of an n-dimensional permutohedron, a fully polynomial-time approximation scheme is proposed.
Źródło:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2010, 30, 2; 191-203
1509-9407
Pojawia się w:
Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Online control education using 3D holographic visualisation
Autorzy:
Matišák, Jakub
Rábek, Matej
Žáková, Katarína
Powiązania:
https://bibliotekanauki.pl/articles/1837378.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
control theory
hologram
furuta pendulum
education
3D model
scilab
Opis:
Interactive 3D visualization technology has brought many benefits into education. Since it is possible to visualize behavior of wide range of devices, it is much easier to imagine processes where these devices are included. The paper demonstrates the application for interactive teaching of control theory. It allows to simulate a holographic model of a selected mechatronic system that is a digital visualization of the real device. The behaviour of the device is controlled by Scilab/Xcos, which is open‐source, cross‐platform numerical computational environment. The main purpose of the application is to help students with better understanding of physical meaning of abstract mathematical models, that describes dynamical systems.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2020, 14, 3; 42-47
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Model and Implementation of System Evolving Algorithm with Distributed Beginning Population
Autorzy:
Tchórzewski, J.
Ruciński, A.
Powiązania:
https://bibliotekanauki.pl/articles/92846.pdf
Data publikacji:
2006
Wydawca:
Uniwersytet Przyrodniczo-Humanistyczny w Siedlcach
Tematy:
artificial intelligence methods
evolving algorithm
electric power market
control theory
Opis:
This paper shows some results of using artificial intelligence methods for searching the new state of development system of electro energetic transmission network. In particular, is using evolving algorithm. Some experiments are prepared in MATLAB and Simulink environment.
Źródło:
Studia Informatica : systems and information technology; 2006, 1(7); 133-146
1731-2264
Pojawia się w:
Studia Informatica : systems and information technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Economic Strain and Adolescent Violence. Are extracurricular activities a conditioning effect?
Autorzy:
Pitt, Cassady
Walker, Brittani
Powiązania:
https://bibliotekanauki.pl/articles/1991080.pdf
Data publikacji:
2022-01-01
Wydawca:
Academicus. International Scientific Journal publishing house
Tematy:
participation in sports
economic disadvantage
adolescent delinquency
social control theory
Opis:
This article examines the extent to which participation in sports acts as a conditioning effect to the relationship between economic disadvantage and adolescent violent delinquency. Deriving hypotheses from general strain and social control theories, we use data from the National Longitudinal Study of Adolescent Health to test if type of extracurricular activity participation diminishes the risk of economic disadvantage on violent delinquency. In support of social control theory, the direct effect of academic clubs and performing arts is negatively associated with adolescent violence. Additionally, analyses indicate that participation in contact sports decreases the relationship economic disadvantage and violent delinquency when other strain controls are added including race/ethnicity, family structure, lack of parental supervision, etc. Overall findings are expected of the social control conditioning effect of general strain theory.
Źródło:
Academicus International Scientific Journal; 2022, 13, 25; 194-213
2079-3715
2309-1088
Pojawia się w:
Academicus International Scientific Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On the fuzzy control stochastic differential systems
Autorzy:
Tung, T. T.
Powiązania:
https://bibliotekanauki.pl/articles/970073.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
fuzzy theory
differential equations
fuzzy differential equation
fuzzy stochastic differential system
control theory
Opis:
In this paper, fuzzy control stochastic differentia systems are introduced. The existence and some comparison results on solutions of fuzzy control stochastic differential systems and on sheaf-solutions of sheaf fuzzy control stochastic systems are provided. The continuous dependence of solutions and sheaf-solutions on initials and controls is investigated. The results obtained are correct and meaningful for the theory control.
Źródło:
Control and Cybernetics; 2013, 42, 2; 505-525
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Determination of the optimal exchange rate via control of the domestic interest rate in Nigeria
Autorzy:
Ekhosuehi, V. U.
Ogbonmwan, S. M.
Powiązania:
https://bibliotekanauki.pl/articles/406440.pdf
Data publikacji:
2014
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
balance-of-payments
domestic interest rate
exchange rate
optimal control theory
statistical control
Opis:
An economic scenario has been considered where the government seeks to achieve a favourable balance-of-payments over a fixed planning horizon through exchange rate policy and control of the domestic interest rate. The dynamics of such an economy was considered in terms of a bounded optimal control problem where the exchange rate is the state variable and the domestic interest rate is the control variable. The idea of balance-of-payments was used as a theoretical underpinning to specify the objective function. By assuming that, changes in exchange rates were induced by two effects: the impact of the domestic interest rate on the exchange rate and the exchange rate system adopted by the government. Instances for both fixed and flexible optimal exchange rate regimes have been determined. The use of the approach has been illustrated employing data obtained from the Central Bank of Nigeria (CBN) statistical bulletin.
Źródło:
Operations Research and Decisions; 2014, 24, 1; 23-36
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Financing university education in Nigeria : a proposal for infrastructure replenishment in universities
Autorzy:
Ekhosuehi, V.
Iguodala, W. A.
Osagiede, A. A.
Powiązania:
https://bibliotekanauki.pl/articles/406369.pdf
Data publikacji:
2016
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
Hamilton–Pontryagin equation
higher education
optimal control theory
replenishment
university education
Opis:
The subject of replenishment of infrastructure in Nigerian public universities has been of great concern to stakeholders in the educational system. How to obtain an appropriate replenishment plan that would give the desired infrastructure for a university after a certain period of time is a long-standing problem. We attempt to find a solution to this problem from an engineering perspective based on optimal control theory. The revenue generated through the payment of school fees and the costs of investment in infrastructure are used to construct the objective function. The state variables are the amount budgeted for such an investment and the stock of infrastructure, while the rate of replenishment is used as the control variable. The problem is solved by utilising Pontryagin’s principle. The dynamics of the replenishment plan is illustrated with an example. The results show that there should be a steady increase in the amount budgeted, in order to attain the desired infrastructure.
Źródło:
Operations Research and Decisions; 2016, 26, 4; 33-47
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On a property of weak resolvents and its application to a spectral problem
Autorzy:
Uetake, Yoichi
Powiązania:
https://bibliotekanauki.pl/articles/1294816.pdf
Data publikacji:
1997
Wydawca:
Polska Akademia Nauk. Instytut Matematyczny PAN
Tematy:
weak resolvent
cyclic vector
spectral radius
Hardy class
operator model theory
scattering theory
control theory
Opis:
We show that the poles of a resolvent coincide with the poles of its weak resolvent up to their orders, for operators on Hilbert space which have some cyclic properties. Using this, we show that a theorem similar to the Mlak theorem holds under milder conditions, if a given operator and its adjoint have cyclic vectors.
Źródło:
Annales Polonici Mathematici; 1997, 66, 1; 263-268
0066-2216
Pojawia się w:
Annales Polonici Mathematici
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Variational formalism applied to control of autonomous switching systems
Autorzy:
Bagdouri, M. E.
Cebron, B.
Sechilariu, M.
Burger, J.
Powiązania:
https://bibliotekanauki.pl/articles/970461.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
teoria sterowania
system komutacyjny
rachunek wariacyjny
control theory
switching systems
variational calculation
Opis:
The formalism of the calculus of variations is applied to determine an optimal control of a class of Hybrid Dynamical Systems. This class consists of autonomous switching systems where jumps of the state are taken into account. It is shown that model switching involves discontinuities in the adjoint state of the system. The expression of the gradient of the cost function, with respect to the control, allows for the calculation of an optimal control by implementing a descent method. Au illustrative linear quadratic example is given, which allows to conclude that, the method can be easily implemented.
Źródło:
Control and Cybernetics; 2004, 33, 4; 535-549
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Collaborative intelligence - definition and measured impacts on internetworked e-work
Autorzy:
Zhong, H.
Levalle, R. R.
Moghaddam, M.
Nof, S. Y.
Powiązania:
https://bibliotekanauki.pl/articles/406926.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
collaboration lifecycle management
computer-supported collaborative work
enterprise collaboration
intelligent control
resilience
collaborative control theory
Opis:
Internetworked e-Work is enabling new channels in cyber space for collaboration among physical and cyber agents, e.g., humans, robots, software agents. Research on Collaborative Control Theory (CCT) indicates that building and augmenting the Collaborative Intelligence (CI) of participants in cyber-physical networks can provide better support for achieving their individual and common goals. In spite of its rising significance and popularity, however, no clear and precise definition and universal quantitative measure has been proposed for the CI. In this article, we first formalize the CI by suggesting a formal definition, based on the definitions of its elements - collaboration and intelligence. We then propose a quantitative measure for the CI, adapted from the universal intelligence measure. For illustration, we analyze three recent collaborative e-Work studies at three different scales: (1) Telerobotenabled computer supported collaborative design; (2) Collaborative product line control in supply networks; (3) Demand and capacity sharing in multi-enterprise collaboration. From these case studies, common advantages such as work efficiency, network robustness and stability, service level, resource utilization, and collaboration cost are observed, analyzed, and translated into formal CI measures. Results indicate significant impacts of CI on the efficiency, effectiveness, and quality of collaborative activities in emerging e-Work networks.
Źródło:
Management and Production Engineering Review; 2015, 6, 1; 67-78
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Extremal problems for second order hyperbolic systems involving multiple time delays
Autorzy:
Kowalewski, Adam
Powiązania:
https://bibliotekanauki.pl/articles/27312006.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
optimal control theory
boundary control
second order hyperbolic systems
multiple time delays
electric long lines
Opis:
Extremal problems for multiple time delay hyperbolic systems are presented. The optimal boundary control problems for hyperbolic systems in which multiple time delays appear both in the state equations and in the Neumann boundary conditions are solved. The time horizon is fixed. Making use of Dubovicki-Milutin scheme, necessary and sufficient conditions of optimality for the Neumann problem with the quadratic performance functionals and constrained control are derived.
Źródło:
Archives of Control Sciences; 2023, 33, 1; 101--126
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence and solution sets of impulsive functional differential inclusions with multiple delay
Autorzy:
Helal, M.
Ouahab, A.
Powiązania:
https://bibliotekanauki.pl/articles/256052.pdf
Data publikacji:
2012
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
impulsive functional differential inclusions
decomposable set
parameter differential inclusions
AR-set
control theory
Opis:
In this paper, we present some existence results of solutions and study the topological structure of solution sets for the following first-order impulsive neutral functional differential inclusions with initial condition: [formula] where J : = [0; b] and 0 = t0 < t1 < ... < tm < tm+1 = b (m ∈ N*), F is a set-valued map and g is single map. The functions Ik characterize the jump of the solutions at impulse points tk (k = 1, ... m). Our existence result relies on a nonlinear alternative for compact u.s.c. maps. Then, we present some existence results and investigate the compactness of solution sets, some regularity of operator solutions and absolute retract (in short AR). The continuous dependence of solutions on parameters in the convex case is also examined. Applications to a problem from control theory are provided.
Źródło:
Opuscula Mathematica; 2012, 32, 2; 249-283
1232-9274
2300-6919
Pojawia się w:
Opuscula Mathematica
Dostawca treści:
Biblioteka Nauki
Artykuł

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