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Tytuł:
Necessary optimality conditions for nonsmooth two-dimensional control systems described by Roessers model
Autorzy:
Studniarski, M.
Powiązania:
https://bibliotekanauki.pl/articles/206015.pdf
Data publikacji:
1998
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
sterowanie optymalne
generalized gradients
necessary conditions
optimal control
two-dimensional discrete systems
Opis:
Necessary optimality conditions for nonlinear nonsmooth two-dimensional discrete control systems are derived. Under additional convexity assumptions, these conditions can be obtained in the form of a maximum principle. For some special cases, sufficient optimality conditions are also presented.
Źródło:
Control and Cybernetics; 1998, 27, 1; 51-61
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Limiting ellipsoid for reachability set of 2D continuous-discrete linear system with disturbances
Autorzy:
Krasoń, E.
Powiązania:
https://bibliotekanauki.pl/articles/205518.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
dyskretny system sterowania
system liniowy
2D continuous-discrete linear system
continous time systems
discrete systems
linear systems
multidimensional systems
reachability set
support function
Opis:
A model of 2D continuous-discrete linear system is considered whose input disturbances are unknown but bounded by known ellipsoid. The formula for a support function of reachability set of this system is presented. A method of construction of ellipsoid limiting reachability set is proposed and illustrated with an example.
Źródło:
Control and Cybernetics; 1999, 28, 2; 269-279
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Decentralized structural control approach for Petri nets
Autorzy:
Aybar, A.
Powiązania:
https://bibliotekanauki.pl/articles/969777.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
discrete event systems
Petri nets
decentralized control
structural controller
Opis:
The structural controller, described by adding the control places to the Petri nets, is introduced in this work to lead the Petri net to the desired marking vectors. An algorithm (Algorithm I) is developed to determine the control places for the given Petri net. The connections and the initial marking of each control place are determined in this algorithm. Moreover, a decentralized structural control approach, based on overlapping decompositions, is introduced in this work. In this decentralized approach, all disjoint Petri subnets, which are obtained by using overlapping decompositions, are determined. The control places for each Petri subnet are determined by using the given algorithm. Then, the control places for the orginal Petri net are obtained by the control places of each PSN by another algorithm (Algorithm II) and these places are added to the orginal Petri net. Therefore, a decentralized structural controller which guarantees to lead the Petri net to the desired marking vectors is obtained.
Źródło:
Control and Cybernetics; 2007, 36, 1; 143-159
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Positive output controllability of linear discrete–time invariant systems
Autorzy:
Ouyadri, Mourad
Laabissi, Mohamed
Achhab, Mohammed Elarbi
Powiązania:
https://bibliotekanauki.pl/articles/2183474.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
discrete LTI systems
positive control
controllability
positive output controllability
Opis:
This paper studies the output controllability of discrete linear time invariant systems (LTI) with non-negative input constraints. Some geometrical arguments and positive invariance concepts are used to derive the necessary and/or sufficient conditions for the positive output controllability of discrete LTI systems. The paper also provides several academic examples, which support the theoretical results.
Źródło:
Control and Cybernetics; 2021, 50, 4; 521--539
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Positivity and stability of fractional discrete-time linear systems. The model without a time shift in the difference
Autorzy:
Kaczorek, T.
Ostalczyk, P.
Powiązania:
https://bibliotekanauki.pl/articles/206611.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
positivity
stability
fractional discrete-time linear systems
Opis:
The positivity and stability of fractional discretetime linear systems described by a new model are addressed. Necessary and sufficient conditions for the positivity and asymptotic stability of the systems are established. New tests for checking of the stability are proposed.
Źródło:
Control and Cybernetics; 2017, 46, 1; 27-36
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Reducibility condition for nonlinear discrete-time systems: behavioral approach
Autorzy:
Bartosiewicz, Z.
Kotta, U.
Pawłuszewicz, E.
Tonso, M.
Wyrwas, M.
Powiązania:
https://bibliotekanauki.pl/articles/206211.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
nonlinear discrete-time systems reducibility
behavioral approach
left difference polynomials
Opis:
The paper addresses the problem of reducibility of nonlinear discrete-time systems, described by implicit higher order difference equations where no a priori distinction is made between input and output variables. The reducibility definition is based on the concept of autonomous element. We prove necessary reducibility condition, presented in terms of the left submodule, generated by the row matrix, describing the behavior of the linearized system, over the ring of left difference polynomials. Then the reducibility of the system implies the closedness of the submodule, like in the linear time-invariant case. In the special case, when the variables may be specified as inputs and outputs and the system equations are Niven in the explicit form, the results of this paper yield the known results.
Źródło:
Control and Cybernetics; 2013, 42, 2; 329-346
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Passivity-based optimal control of discrete-time nonlinear systems
Autorzy:
Binazadeh, T.
Shafiei, M. H.
Powiązania:
https://bibliotekanauki.pl/articles/205917.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
nonlinear discrete-time systems optimal passivity-based control
genetic optimization algorithm
Opis:
In this paper, a passivity-based optimal controlmethod for a broad class of nonlinear discrete-time systems is proposed. The resulting control law is a static output feedback law which is practically preferred with respect to the state feedback law and is simple to implement. The control law has a general structure with adjustable parameters which are tuned, using an optimization method (genetic algorithm), to minimize an arbitrary cost function. By choosing this cost function it is possible to shape the transient response of the closed-loop system, as it is desirable. An illustrative ex ample shows the effectiveness of the proposed approach.
Źródło:
Control and Cybernetics; 2013, 42, 3; 627-637
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Trackability and bounded output bounded input trackability of linear discrete-time systems
Autorzy:
Kurek, J.
Powiązania:
https://bibliotekanauki.pl/articles/206760.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
sterowalność
system liniowy dyskretno-czasowy
controllability
linear discrete time systems
trackability
Opis:
The notions of systems trackability and bounded output bounded input (B0BI) trackability are given. Then, necessary and suffcient conditions are formulated for trackability of linear discrete-time systems.
Źródło:
Control and Cybernetics; 2002, 31, 1; 43-55
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A reliable synthesis of discrete-time Η∞ control. Part I: basic theorems and J-lossless conjugators
Autorzy:
Suchomski, P. J.
Powiązania:
https://bibliotekanauki.pl/articles/969759.pdf
Data publikacji:
2007
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
linear systems
discrete-time systems
Riccati equations
Η∞ methods
lossless systems
perturbation analysis
numerical methods
Opis:
The paper gives a basis for solving many problems of numerically reliable synthesis of sub-optimal discrete-time control in Η∞. The approach is based on J-lossless factorisations of the delta-domain chain-scattering descriptions of continuous-time plants being controlled. Relevant properties of poles and zeros of chain-scattering models are given. Necessary and sufficient conditions for the existence of stabilising J-lossless conjugators are presented and discussed. Some aspects of numerical conditioning of synthesis of such conjugators are considered. A numerical example illustrating synthesis of stabilising right J-lossless conjugators is also included.
Źródło:
Control and Cybernetics; 2007, 36, 1; 97-141
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Discrete-time control systems on homogeneous spaces: partition property
Autorzy:
Jordan, J.
Powiązania:
https://bibliotekanauki.pl/articles/970004.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
discrete-time control systems
inverse iteration
partition property
system semigroup
Opis:
If the system semigroup of a control system is a roup, the system has the partition property, i.e., the reachable sets form a disjoint partition in the state space. The converse is ot true in general. In this work we give sufficient conditions for le partition property for a family of discrete-time control systems on homogeneous spaces. We apply our results to Inverse Iteration systems on flag manifolds, which are closely related to numerical aIgorithms.
Źródło:
Control and Cybernetics; 2006, 35, 4; 863-871
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simple stable discrete-time generalised predictive control with anticipated filtration of control error
Autorzy:
Kowalczuk, Z.
Suchomski, P.
Powiązania:
https://bibliotekanauki.pl/articles/206013.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
sterowanie predykcyjne
synteza systemu sterowania
system dyskretno-czasowy
discrete-time systems
non-minimal systems
predictive control
system design
Opis:
It is shown that under some specific conditions, the solution of the generalised predictive control (GPC) design using the concept of anticipated filtering (AF) of the control error always exists, and that such a design leads to stable control systems with definite closed-loop characteristics. The plant cancellation issue is taken into account, and it is demonstrated that certain bounds on GPC design parameters have to be considered. An iterative procedure for simultaneous determination of the three basic design-tuning parameters: the control horizon, the controller gain, and the order of plant cancellation, is also supplied. An important feature of this approach is that the anticipated filtering makes it possible to reduce a disagreeable control effort associated with GPC and to make the [lambda]-tuning mechanism practicable. The bounds on the GPC design parameters are discussed, and certain optimal tuning rules are proposed and validated via simulated experiments.
Źródło:
Control and Cybernetics; 2002, 31, 1; 17-41
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Parameter estimation of MIMO two-dimensional ARMAX model based on IGLS method
Autorzy:
Hayati, Zohreh
Shafieirad, Mohsen
Zamani, Iman
Amiri Mehra, Amir Hossein
Abbasi, Zohreh
Powiązania:
https://bibliotekanauki.pl/articles/2183469.pdf
Data publikacji:
2021
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
ARMAX model
discrete 2D systems
iterative identification
MIMO system
parameter estimation
Opis:
This paper presents an iterative method for the unbiased identification of linearMultiple-InputMultiple-Output (MIMO) discrete two-dimensional (2D) systems. The system discussed here has Auto-Regressive Moving-Average model with exogenous inputs (ARMAX model). The proposed algorithm functions on the basis of the traditional Iterative Generalized Least Squares (IGLS) method. In summary, this paper proposes a two-dimensional Multiple-Input Multiple-Output Iterative Generalized Least Squares (2DMIGLS) algorithm to estimate the unknown parameters of the ARMAX model. Finally, simulation results show the efficiency and accuracy of the presented algorithm in estimating the unknown parameters of the model in the presence of colored noise.
Źródło:
Control and Cybernetics; 2021, 50, 3; 303--322
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic control of a class of discrete event systems using a state reconstruction algorithm
Autorzy:
Martinelli, F.
Nicosia, S.
Valigi, P.
Powiązania:
https://bibliotekanauki.pl/articles/205600.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
discrete events systems
optymalizacja
sterowanie
teoria systemów
Kanbaal systems
optimization
ordinal optimization
production control
resource allocations
sample path analysis
Opis:
The problem of dynamic control of Discrete Event Dynamic Systems (DEDS) is addressed in this paper as a dynamic optimization problem : some resources must be allocated to the system in order to optimize a performance function which is assumed time-varying. The control scheme exploits a state reconstruction algorithm to compute an estimate of the performance for perturbed sample paths. The algorithm is based on the use of data extracted from the observation of the system and allows to accurately reconstruct its state behavior, for resource allocations different from the nominal one. The proposed control scheme is then used for dynamic allocation of buffer capacities in mamlfaeturing systems, such as Kanban systems. A parallel implementation of the whole algorithm is also mentioned.
Źródło:
Control and Cybernetics; 2000, 29, 1; 275-294
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fractional Kalman Filter algorithms for correlated system and measurement noises
Autorzy:
Sierociuk, D.
Powiązania:
https://bibliotekanauki.pl/articles/206137.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
fractional order calculus
discrete fractional state-space systems
fractional Kalman filter
Opis:
The paper presents a generalization of the Fractional Kalman Filter to a case when correlated system and measurement noises appear. The algorithm proposed is derived in detail for a linear generalized discrete fractional order state-space system for both constant and variable order cases. In order to present the efficiency of the proposed algorithm, results of numerical simulations are presented. Results of numerical experiments are compared with the effect of estimation obtained when using the traditional Fractional Kalman Filter algorithm.
Źródło:
Control and Cybernetics; 2013, 42, 2; 471-490
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hybrid modelling and performance evaluation of switched discrete-event systems
Autorzy:
Wang, L.
Powiązania:
https://bibliotekanauki.pl/articles/970351.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
układ zespolony
układ komutowany
modelowanie hybrydowe
zachowanie okresowe
ocena działania systemu
complex systems
switched systems
discrete event systems
max-plus algebra
hybrid modelling
periodic behavior
performance evaluation
Opis:
Motivated by the integrated complexity of real-time intelligent control and optimization of industrial/manufacturing processes, this paper discusses hybrid modelling and asymptotic periodic behavior of a class of switched discrete event systems, and shows how to evaluate the asymptotic performance/efficiency of such systems. We prove that, under some mild conditions, the switched discrete event system will achieve asymptotic periodic dynamics, and its performance/efficiency can be evaluated by calculating the eigenvalue of certain matrix in max-plus algebra. Illustrative examples are provided.
Źródło:
Control and Cybernetics; 2004, 33, 2; 311-321
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 19

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