Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "functional control" wg kryterium: Temat

  Lista filtrów
Wyrównaj
Wyświetlanie 1-15 z 39
Tytuł:
Extension of first order predictive functional controllers to handle higher order internal models
Autorzy:
Khadir, M. T.
Ringwood, J. V.
Powiązania:
https://bibliotekanauki.pl/articles/907939.pdf
Data publikacji:
2008
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
sterowanie predykcyjne
system fazowy
system oscylacyjny
model predictive control
predictive functional control
non-minimum-phase systems
oscillatory systems
Opis:
Predictive Functional Control (PFC), belonging to the family of predictive control techniques, has been demonstrated as a powerful algorithm for controlling process plants. The input/output PFC formulation has been a particularly attractive paradigm for industrial processes, with a combination of simplicity and effectiveness. Though its use of a lag plus delay ARX/ARMAX model is justified in many applications, there exists a range of process types which may present difficulties, leading to chattering and/or instability. In this paper, instability of first order PFC is addressed, and solutions to handle higher order and difficult systems are proposed. The input/output PFC formulation is extended to cover the cases of internal models with zero and/or higher order pole dynamics in an ARX/ARMAX form, via a parallel and cascaded model decomposition. Finally, a generic form of PFC, based on elementary outputs, is proposed to handle a wider range of higher order oscillatory and non-minimum phase systems. The range of solutions presented are supported by appropriate examples.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2008, 18, 2; 229-239
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automated Self-trained System of Functional Control and State Detection of Railway Transport Nodes
Autorzy:
Akhmetov, Bakhytzhan
Lakhno, Valeriy
Oralbekova, Ayaulym
Kaskatayev, Zhanat
Mussayeva, Gulmira
Powiązania:
https://bibliotekanauki.pl/articles/227158.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
information intellectual technology of failure detection
functional control
learning matrix
learning algorithm
operator effectiveness criterion
nodes and aggregates
railway transport
Opis:
Automation of data processing of contactless diagnostics (detection) of the technical condition of the majority of nodes and aggregates of railway transport (RWT) minimizes the damage from failures of these systems in operating modes. This becomes possible due to the rapid detection of serious defects at the stage of their origin. Basically, in practice, the control of the technical condition of the nodes and aggregates of the RWT is carried out during scheduled repairs. It is not always possible to identify incipient defects. Consequently, it is not always possible to warn personnel (machinists, repairmen, etc.) of significant damage to the RWT systems until their complete failure. The difficulties of obtaining diagnostic information is that there is interdependence between the main nodes of the RWT. This means that if physical damage occurs at any of the RWT nodes, in other nodes there can also occur malfunctions. As the main way to improve the efficiency of state detection of the nodes and aggregates of RWT, we see the direction of giving the adaptability property for an automated data processing system from various contactless diagnostic information removal systems. The global purpose can be achieved, in particular, through the use of machine learning methods and failure recognition (recognition objects). In order to improve the operational reliability and service life of the main nodes and aggregates of RWT, there are proposed an appropriate model and algorithm of machine learning of the operator control system of nodes and aggregates. It is proposed to use the Shannon normalized entropy measure and the Kullback-Leibler distance information criterion as a criterion of the learning effectiveness of the automated detection system and operator node state control of RWT. The article describes the application of the proposed method on the example of an automatic detection system (ADS) of the state of a traction motor of an electric locomotive. There are given the test data of the model and algorithm in the MATLAB environment.
Źródło:
International Journal of Electronics and Telecommunications; 2019, 65, 3; 491-496
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dual dynamic approach to shape optimization
Autorzy:
Fulmański, P.
Nowakowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/969944.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
control
deformation
dual dynamic programming
shape functional
Opis:
We consider the control problem with multidimensional integral functional where state and control satisfy a system of the first order hyperbolic PDE. Next, a type of deformation with control of the domain is described and then we define suitable shape functional. Having defined trajectory and control of deformation the dual dynamic programming tools are applied to derive optimality condition for the shape functional with respect to such a deformation.
Źródło:
Control and Cybernetics; 2006, 35, 2; 205-218
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Functional testing of railway traffic control device
Autorzy:
Drózd, Paweł
Rosiński, Adam
Konopiński, Lech
Powiązania:
https://bibliotekanauki.pl/articles/215152.pdf
Data publikacji:
2020
Wydawca:
Instytut Kolejnictwa
Tematy:
functional tests
railway traffic control devices
tests
Opis:
The article presents the problems of functional tests of railway traffic control devices. The purpose and scope of the tests as well as the impact of testing on the SRK devices are presented. The methodology of selecting tests depending on the scope of research is proposed. For this purpose, the SRK devices were analyzed for functional and diagnostic properties.
Źródło:
Problemy Kolejnictwa; 2020, 186; 91-96
0552-2145
2544-9451
Pojawia się w:
Problemy Kolejnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On generalization of integral control to a class of nonlinear uncertain systems
Autorzy:
Zwierzewicz, Z.
Powiązania:
https://bibliotekanauki.pl/articles/229834.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
nonlinear control
uncertain systems
adaptive control
integral action
approximator
functional uncertainty
Opis:
The paper concerns a new view on the problem of integral control in the context of nonlinear uncertain systems. It is demonstrated that a standard integral action applied to the linear control system with so-called load disturbances, can be generalized to comprise a class of linearly parameterized nonlinear SISO systems with functional uncertainty. In this case the integral action is turned out to be in fact an adaptation law of unknown parameters. It has been found that the obtained proportional-integral controller's variable gains are the basis functions of the system unknown nonlinearity approximator.
Źródło:
Archives of Control Sciences; 2010, 20, 2; 187-198
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Functional adaptation of bone as an optimal control problem
Funkcjonalna adaptacja kości jako zagadnienie optymalnego sterowania
Autorzy:
Lekszycki, T.
Powiązania:
https://bibliotekanauki.pl/articles/279819.pdf
Data publikacji:
2005
Wydawca:
Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:
adaptation
bone
objective functional
optimal control
remodeling
tissue
Opis:
The functional adaptation of bone is a process of bone tissue remodeling induced by variable in time mechanical demands that the skeleton has to satisfy. It is a very complex but highly organized process composed of events at micro-level (molecular and cellular) but having effects in macro-scale (variation of bone internal structure and external shape). Mathematical models of this phenomenon proposed in the literature represent formulas postulated on the basis of the results of medical observations or laboratory investigations and describe locally the evolution of a material in space and time. In the present paper a use is made of the hypothesis of optimal response of bone, proposed earlier by the author, what enables derivation (instead of postulation) the remodeling rules from a very general and global assumption. It turns out that such a formulation has many similarities to engineering optimal control problems. The link between the postulated local adaptation rules and those derived from the global assumption is also discussed.
Funkcjonalna adaptacja kości jest procesem polegającym na przebudowie tkanki kostnej wywołanej zmieniającymi się w czasie wymaganiami mechanicznymi, jakie musi spełniać szkielet kostny. Proces ten jest niezwykle złożony, ale doskonale zorganizowany i składa się z szeregu zjawisk zachodzących na poziomie mikro (molekularnym i komórkowym) lecz mających efekt na poziomie makro (zmiana zewnętrznego kształtu kości oraz jej struktury wewnętrznej). Matematyczne modele tego zjawiska, postulowane w oparciu o obserwacje medyczne i badania laboratoryjne, opisują lokalną ewolucję materiału w czasie i przestrzeni. W tej pracy zastosowano hipotezę optymalnej odpowiedzi kości zaproponowaną wcześniej przez autora w celu wyprowadzenia (zamiast postulowania) związków rządzących przebudową kości w oparciu o bardzo ogólne założenia. Okazuje się, że takie sformułowanie ma wiele wspólnego z zagadnieniami optymalnego sterowania. W pracy zaprezentowano przykład zastosowania omawianego podejścia oraz przeprowadzono krótką dyskusję na temat związków między postulowanymi modelami i wyprowadzonymi w oparciu o przyjętą hipotezę.
Źródło:
Journal of Theoretical and Applied Mechanics; 2005, 43, 3; 555-574
1429-2955
Pojawia się w:
Journal of Theoretical and Applied Mechanics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Robust output feedback Model Predictive Control design
Autorzy:
Vesely, V.
Rosinova, D.
Powiązania:
https://bibliotekanauki.pl/articles/229853.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
model predictive control
robust control
parameter dependent quadratic stability
Lyapunov functional
polytopic system
decentralized control
Opis:
The paper addresses the problem of designing a robust output/state model predictive control for linear polytopic systems without constraints. The new robust BMI stability condition for given predictive and control horizon is derived which guarantees the parameter dependent quadratic stability and guaranteed cost.The proposed condition is appropriate for centralized and decentralized control design, as illustrated on example.
Źródło:
Archives of Control Sciences; 2010, 20, 3; 303-316
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Correctness of a constrained control Mayers problem for a class of singularly perturbed functional-differential systems
Autorzy:
Glizer, V. Y.
Powiązania:
https://bibliotekanauki.pl/articles/969600.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
functional differential system
time delay
Mayer's problem
bounded control
singular perturbation
correctness
suboptimal control
Opis:
A Mayer's problem for a singularly perturbed controlled system with the general type of a small state delay is considered. The control is subject to geometrical constraints. The cost functional is a function of the terminal value of the slow state variable. A simpler parameter-free optimal control problem (the reduced problem) is associated with the original problem. A convergence of the optimal value of the cost functional in the original problem to the optimal value of the cost functional in the reduced problem, as a parameter of singular perturbation tends to zero, is established. An asymptotic suboptimality of the optimal control of the reduced problem in the original problem is shown. These results are extended to some more general optimal control problems. An illustrative example is presented.
Źródło:
Control and Cybernetics; 2008, 37, 2; 329-351
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Methodological issues of functional safety and reliability assessment of critical systems in industrial hazardous plants
Autorzy:
Kosmowski, K. T.
Powiązania:
https://bibliotekanauki.pl/articles/2069067.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
hazardous plants
control systems
functional safety
security
human factors
human reliability
Opis:
The aim of this article is to identify and discuss some methodological issues that are of interest among functional safety specialists and experts after publication of the second edition of international standards IEC 61508 and IEC 61511, including the design and implementing the safety-related functions of higher safety integrity levels and protection layers. The basic role of safety-related systems is to reduce effectively and to control in time the individual and/or societal risk with regard to its tolerable levels. These issues include: risk criteria, reliability data, probabilistic models of systems operating in high and/or low mode, dependent failures, human reliability analysis, security of programmable safety-related systems, and reducing uncertainty issues in decision making process applying the cost-benefit analysis. Selected aspects of these issues are discussed and some challenges requiring further research are indicated.
Źródło:
Journal of Polish Safety and Reliability Association; 2015, 6, 2; 59--70
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An approximate solution of the affine-quadratic control problem based on the concept of optimal damping
Autorzy:
Veremey, Evgeny I.
Powiązania:
https://bibliotekanauki.pl/articles/1838175.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
feedback
stability
damping control
functional
optimization
sprzężenie zwrotne
kontrola tłumienia
optymalizacja
Opis:
The paper is devoted to a particular case of the nonlinear and nonautonomous control law design problem based on the application of the optimization approach. Close attention is paid to the controlled plants, which are presented by affine-control mathematical models characterized by integral quadratic functionals. The proposed approach to controller design is based on the optimal damping concept firstly developed by V.I. Zubov in the early 1960s. A modern interpretation of this concept allows us to construct effective numerical procedures of control law synthesis initially oriented to practical implementation. The main contribution is the proposition of a new methodology for selecting the functional to be damped. The central idea is to perform parameterization of a set of admissible items for this functional. As a particular case, a new method of this parameterization has been developed, which can be used for constructing an approximate solution to the classical optimization problem. Applicability and effectiveness of the proposed approach are confirmed by a practical numerical example.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 1; 5-15
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An approximate solution of the affine-quadratic control problem based on the concept of optimal damping
Autorzy:
Veremey, Evgeny I.
Powiązania:
https://bibliotekanauki.pl/articles/1838180.pdf
Data publikacji:
2021
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
feedback
stability
damping control
functional
optimization
sprzężenie zwrotne
kontrola tłumienia
optymalizacja
Opis:
The paper is devoted to a particular case of the nonlinear and nonautonomous control law design problem based on the application of the optimization approach. Close attention is paid to the controlled plants, which are presented by affine-control mathematical models characterized by integral quadratic functionals. The proposed approach to controller design is based on the optimal damping concept firstly developed by V.I. Zubov in the early 1960s. A modern interpretation of this concept allows us to construct effective numerical procedures of control law synthesis initially oriented to practical implementation. The main contribution is the proposition of a new methodology for selecting the functional to be damped. The central idea is to perform parameterization of a set of admissible items for this functional. As a particular case, a new method of this parameterization has been developed, which can be used for constructing an approximate solution to the classical optimization problem. Applicability and effectiveness of the proposed approach are confirmed by a practical numerical example.
Źródło:
International Journal of Applied Mathematics and Computer Science; 2021, 31, 1; 5-15
1641-876X
2083-8492
Pojawia się w:
International Journal of Applied Mathematics and Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Procedure based functional safety and information security management of industrial automation and control systems on example of the oil port installations
Autorzy:
Śliwiński, M.
Piesik, E.
Powiązania:
https://bibliotekanauki.pl/articles/2068879.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
functional safety
security
cyber HAZOP
industrial control systems
oil port installations
Opis:
The approach addresses selected technical and organization aspects of risk mitigation in the oil port installations with regard to functional safety and security requirements specified in standards IEC 61508, IEC 61511 and IEC 62443. The procedure for functional safety management includes the hazard identification, risk analysis and assessment, specification of overall safety requirements and definition of safety functions. Based on the risk evaluation results the safety integrity level (SIL) and security assurance level (SAL) will be determined for consecutive safety functions. The proposed approach will be composed of the following items: process and procedure based safety and security management, example of procedure based safety management including insurance, integrated safety and security assessment of industrial control system (ICS) of the oil port pipelines, tanks and critical infrastructure.
Źródło:
Journal of Polish Safety and Reliability Association; 2017, 8, 1; 129--138
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Existence and uniqueness of the solution to the optimal control problem with integral criterion over the entire domain for a nonlinear Schrödinger equation with a special gradient term
Autorzy:
Salmanov, Vuqar
Powiązania:
https://bibliotekanauki.pl/articles/2050054.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
Schrödinger equation
optimal control problem
first variation of the functional
complex potential
Opis:
The paper concerns the optimal control problem with the full-range integral performance criterion for the nonlinear Schrödinger equation with the specific gradient summand and the complex potential when the performance criterion is the full-range integral. In this paper, the existence and uniqueness theorems regarding the solution of the optimal control problem under consideration are proven.
Źródło:
Control and Cybernetics; 2020, 49, 3; 277-290
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The method of selecting the interval of functional tests taking into account economic aspects and legal requirements
Autorzy:
Piesik, Jan
Piesik, Emilian
Śliwiński, Marcin
Powiązania:
https://bibliotekanauki.pl/articles/385226.pdf
Data publikacji:
2020
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
functional test
maintenance engineering
parameter
optimisation
safety analysis
time-schedule control
tires
Opis:
The article discusses the problem of choosing the optimal frequency of functional tests, taking into account the reliability and law requirements, but also the impact of business aspects in the company. The subject of functional test interval is well described for purposes of the process industry. Unfortunately, this is not the case for the machinery safety functions with low demand mode. This is followed by a presentation of the current business approach, which, in order to achieve industrial excellence, monitor their performance through the appropriate selection of key performance indicators. In addition, companies are increasingly exploring potential risks in the following areas: new challenges in advanced risk management, including the perception of the company’s facilities as a safe workplace insight of customers and business partners. Eliminating potential hazards is increasingly taking into account, especially the impact of human activity and its interaction with machines. The case study has been presented based on the machines used for the production of tire semi-finished products. In this article, the authors propose a solution for selecting the interval of functional tests of safety functions and additional machine protection measures as a compromise to achieve satisfactory results in terms of safety requirements, performance and legal requirements.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2020, 14, 2; 91-98
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Integrated approach for functional safety and cyber security management in maritime critical infrastructures
Autorzy:
Śliwiwński, Marcin
Piesik, Emilian
Powiązania:
https://bibliotekanauki.pl/articles/2068695.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
Tematy:
maritime infrastructure
functional safety
cyber security
SIL
SAL
EAL
industrial control systems
Opis:
The work is devoted important issues of the management in maritime critical infrastructure of functional safety analysis, in particular the safety integrity level (SIL) verification of safety functions to be implemented within the distributed control and protection systems with regard to cyber security aspects. A method based on quantitative and qualitative information is proposed for the SIL (IEC 61508, 61511) verification with regard of the evaluation assurance levels (EAL) (ISO/IEC 15408), the security assurance levels (SAL) (IEC 62443), and the number of protection rings described in the Secure Safety (SeSa-SINTEF) methodology. The proposed approach will be composed of the following items: process and procedure based safety and cyber security management, integrated safety and security assessment of industrial control system (ICS) of the maritime critical infrastructure. Proposed methodology is illustrated on case study that based on the part of installation critical maritime infrastructure.
Źródło:
Journal of Polish Safety and Reliability Association; 2019, 10, 1; 137--148
2084-5316
Pojawia się w:
Journal of Polish Safety and Reliability Association
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 39

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies