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Wyszukujesz frazę "positive control" wg kryterium: Temat


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:
Experimental and finite element analysis of PPF controller effectiveness in composite beam vibration suppression
Autorzy:
Mitura, Andrzej
Gawryluk, Jaroslaw
Powiązania:
https://bibliotekanauki.pl/articles/2172029.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
finite element method
positive position feedback control
composite structures
hysteresis
phenomenon
macro-fiber composite
Opis:
In this paper the problem of vibration reduction is considered. Generally, mechanical vibrations occurring during the operation of a system are undesirable and may have a negative effect on its reliability. A finite element model of a single active blade is developed using the Abaqus software. This structure consists of a multi-layer glass-epoxy composite beam with an embedded macro fiber composite (MFC) piezoelectric actuator. For vibration control the use of a positive position feedback (PPF) controller is proposed. To include the PPF controller in the Abaqus software, a special subroutine is created. The developed control algorithm code makes it possible to solve an additional differential equation by the fourth order RungeKutta method. A numerical dynamic analysis is performed by the implicit procedure. The beam responses with and without controller activation are compared. The control subsystem model also includes the hysteresis phenomenon of the piezoelectric actuator. Numerical findings regarding the PPF controller’s effectiveness are verified experimentally.
Źródło:
Eksploatacja i Niezawodność; 2022, 24, 3; 468--477
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Learning from authoritarian teachers: Controlling the situation or controlling yourself can sustain motivation
Autorzy:
Chaffee, Kathryn E.
Noels, Kimberly A.
McEown, Maya Sugita
Powiązania:
https://bibliotekanauki.pl/articles/780643.pdf
Data publikacji:
2014-06
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
primary control
secondary control
positive reappraisal
motivation
controlling instructor
Opis:
Positive psychology encompases the study of positive outcomes, optimal functioning, and resilience in difficult circumstances. In the context of language learning, positive outcomes include academic engagement, self-determined motivation, persistence in language learning, and eventually becoming a proficent user of the language.
Źródło:
Studies in Second Language Learning and Teaching; 2014, 4, 2; 355-387
2083-5205
2084-1965
Pojawia się w:
Studies in Second Language Learning and Teaching
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Affectivity and Self-Forgiveness. The Role of Control of Negative Emotions: Short Report
Autorzy:
Mróz, Justyna
Kaleta, Kinga
Powiązania:
https://bibliotekanauki.pl/articles/31340963.pdf
Data publikacji:
2022
Wydawca:
Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL
Tematy:
positive affect
negative affect
self-forgiveness
control of emotions
anger control
Opis:
Self-forgiveness is a process in which emotions, thoughts, and behaviours towards oneself are changed from negative to neutral or positive. In this study, we examined affectivity and emotional control (of anger, depression, anxiety) as emotional factors promoting or discouraging self-forgiveness. We examined self-forgiveness among Polish adults (N = 380, Mage = 36.26). Respondents completed the Polish version of the Positive Affect Negative Affect Scale, the Courtauld Emotional Control Scale (CECS), and the self-forgiveness subscale of Touissant’s Forgiveness Scale. In our cross-sectional study, we tested the moderating role of emotional control in the relationship between affectivity and self-forgiveness. Our results showed that positive affect was positively correlated with self-forgiveness, whereas negative affect was inversely correlated with self-forgiveness. Additionally, emotional control (anger, depression) was negatively correlated with self-forgiveness. Finally, total control of emotions and control of anger were found to be buffers between negative affect and self-forgiveness, the effect of negative affect on self-forgiveness being weaker among individuals who were more anger-controlling. The obtained results are a prelude to further research into the relationship between affectivity and self-forgiveness.
Źródło:
Roczniki Psychologiczne; 2022, 25, 3; 239-249
1507-7888
Pojawia się w:
Roczniki Psychologiczne
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of fractional positive continuous-time linear systems
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/200346.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional system
positive system
minimum energy control
procedure
Opis:
The minimum energy control problem for the fractional positive continuous-time 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:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 803-807
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cognitive and emotional predictors of episodic and dispositional forgiveness
Autorzy:
Mróz, Justyna
Kaleta, Kinga
Powiązania:
https://bibliotekanauki.pl/articles/2128356.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
emotional control
positive orientation
forgiveness
basic hope
affectivity
Opis:
The study examined the importance of cognitive (positive orientation, basic hope) and emotional (positive and negative affectivity, emotional control) variables for state and trait forgiveness. One hundred and thirty nine participants completed six inventories in Polish version: HFS (Thompson et al., 2005), TRIM (McCullough et al., 1998), P-Scale (Caprara et al., 2012), BHI-12 (Trzebiński & Zięba, 2003a), SUPIN (Polish version of PANAS; Watson, Clark, & Tellegen, 1988), CECS (Watson & Greer, 1983). Results showed that dispositional forgiveness (general and positive) was associated with cognitive and emotional predictors, whereas episodic forgiveness primarily with certain emotional variables. In addition, the results indicated that emotional predictors merely participate in the process of reducing unforgiveness, whereas cognitive and emotional variables were shown to be necessary for full forgiveness.
Źródło:
Polish Psychological Bulletin; 2017, 2; 143-153
0079-2993
Pojawia się w:
Polish Psychological Bulletin
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:
Reachability of linear hybrid systems described by the general model
Autorzy:
Kaczorek, T.
Rogowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/229830.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
reachability
standard
positive
general model
hybrid systems
piecewise constant control
Opis:
The reachability of standard and positive hybrid linear systems described by the general model is addressed. Necessary and sufficient conditions for the reachability of the standard general model are established. Sufficient condition is given for the reachability of positive hybrid system described by the general model. The considerations are illustrated by numerical examples.
Źródło:
Archives of Control Sciences; 2010, 20, 2; 199-207
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of fractional positive electrical circuits
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/141499.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fractional
positive
electrical circuits
minimum energy control
bounded
inputs
procedure
Opis:
Minimum energy control problem for the fractional positive electrical circuits 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 an example of fractional positive electrical circuit.
Źródło:
Archives of Electrical Engineering; 2016, 65, 2; 191-201
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Minimum energy control of positive 2D continuous-discrete linear systems with bounded inputs
Autorzy:
Kaczorek, T.
Powiązania:
https://bibliotekanauki.pl/articles/229934.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
2D continuous-discrete
linear
positive
reachability
minimum energy control
Opis:
A new formulation of the minimum energy control problem for the positive 2D continuousdiscrete linear systems with bounded inputs is proposed. Necessary and sufficient conditions for the reachability of the systems are established. Conditions for the existence of the solution to the minimum energy control problem and a procedure for computation of an input minimizing the given performance index are given. Effectiveness of the procedure is demonstrated on numerical example.
Źródło:
Archives of Control Sciences; 2015, 25, 3; 319-331
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

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