Wszystkie pola: robert control - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Control structures
Autorzy:: Bryant, Robert
Gardner, Robert
Powiązania:: https://bibliotekanauki.pl/articles/1359659.pdf
Data publikacji:: 1995
Wydawca:: Polska Akademia Nauk. Instytut Matematyczny PAN
Opis:: We define an extension of the classical notion of a control system which we call a control structure. This is a geometric structure which can be defined on manifolds whose underlying topology is more complicated than that of a domain in $ℝ^n$. Every control structure turns out to be locally representable as a classical control system, but our extension has the advantage that it has various naturality properties which the (classical) coordinate formulation does not, including the existence of so-called universal objects and classifying maps. This more general viewpoint simplifies the study of the invariants of even classical control systems. Its main technical advantage is that tools like the method of equivalence can be directly and easily applied to the study of control structures.
Źródło:: Banach Center Publications; 1995, 32, 1; 111-121
0137-6934
Pojawia się w:: Banach Center Publications
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Projection method with level control in convex minimization
Autorzy:: Dylewski, Robert
Powiązania:: https://bibliotekanauki.pl/articles/729283.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: projection method
convex nondifferentiable minimization
level control
Opis:: We study a projection method with level control for nonsmoooth convex minimization problems. We introduce a changeable level parameter to level control. The level estimates the minimal value of the objective function and is updated in each iteration. We analyse the convergence and estimate the efficiency of this method.
Źródło:: Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2010, 30, 1; 101-120
1509-9407
Pojawia się w:: Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Design of three control algorithms for an averaging tank with variable filling
Autorzy:: Kolankowski, Michał
Piotrowski, Robert
Powiązania:: https://bibliotekanauki.pl/articles/2105996.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: control system
fuzzy control system
integral control system
LQR
mathematical model
PID control system
state feedback controller
tank with variable filling
Opis:: An averaging tank with variable filling is a nonlinear multidimensional system and can thus be considered a complex control system. General control objectives of such object include ensuring stability, zero steady-state error, and achieving simultaneously shortest possible settling time and minimal overshoot. The main purpose of this research work was the modeling and synthesis of three control systems for an averaging tank. In order to achieve the intended purpose, in the first step, a mathematical model of the control system was derived. The model was adapted to the form required to design two out of three planned control systems by linearization and reduction of its dimensions, resulting in two system variants. A multivariable proportional-integral-derivative (PID) control system for the averaging tank was developed using optimization for tuning PID controllers. State feedback and output feedback with an integral action control system for the considered control system was designed using a linear-quadratic regulator (LQR) and optimization of weights. A fuzzy control system was designed using the Mamdani inference system. The developed control systems were tested using theMATLAB environment. Finally, the simulation results for each control algorithm (and their variants) were compared and their performance was assessed, as well as the effects of optimization in the case of PID and integral control (IC) systems.
Źródło:: Acta Mechanica et Automatica; 2022, 16, 2; 136--150
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Efficient MPC algorithms with variable trajectories of parameters weighting predicted control errors
Autorzy:: Nebeluk, Robert
Marusak, Piotr
Powiązania:: https://bibliotekanauki.pl/articles/230077.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: model predictive control
nonlinear systems
nonlinear models
nonlinear control
simulation
optimization
Opis:: Model predictive control (MPC) algorithms brought increase of the control system performance in many applications thanks to relatively easily solving issues that are hard to solve without these algorithms. The paper is focused on investigating how to further improve the control system performance using a trajectory of parameters weighting predicted control errors in the performance function of the optimization problem. Different shapes of trajectories are proposed and their influence on control systems is tested. Additionally, experiments checking the influence of disturbances and of modeling uncertainty on control system performance are conducted. The case studies were done in control systems of three control plants: a linear non-minimumphase plant, a nonlinear polymerization reactor and a nonlinear thin film evaporator. Three types of MPC algorithms were used during research: linear DMC, nonlinear DMC with successive linearization (NDMC–SL), nonlinear DMC with nonlinear prediction and linearization (NDMC–NPL). Results of conducted experiments are presented in greater detail for the control system of the polymerization reactor, whereas for the other two control systems only the most interesting results are presented, for the sake of brevity. The experiments in the control system of the linear plant were done as preliminary experiments with the modified optimization problem. In the case of control system of the thin film evaporator the researched mechanisms were used in the control system of a MIMO plant showing possibilities of improving the control system performance.
Źródło:: Archives of Control Sciences; 2020, 30, 2; 325-363
1230-2384
Pojawia się w:: Archives of Control Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Thoughts on Road Traffic Control
Autorzy:: Major, Róbert
Mészáros, Gábor
Powiązania:: https://bibliotekanauki.pl/articles/1375169.pdf
Data publikacji:: 2020
Wydawca:: Wyższa Szkoła Policji w Szczytnie
Tematy:: road traffic
accident prevention
overspeeding
research of accident causes
education
traffic control
Opis:: The safety of travel on public roads is one of the most important issues to be developed in Hungary and in the European Union. The authors conducted a survey on the current state of the topic in Hungary. They examine the actions undertaken in traffic safety and traffic control in the past years in the country. Vehicle drivers consider regulations on speed limits and overspeeding to be less respectable and acceptable. The absolute transgression of the speed limit, also known as overspeeding, significantly increases the risk of accidents, and also adds to the severity of accidents, considering the majority of the traumas and the occurrence of fatalities in these accidents. Overspeeding is the greatest problem point in road traffic safety issues such as speeding, drunk driving and the use of passive road traffic safety gear. Considering the fatal road accidents in Hungary, it has become evident that the number of absolute overspeeding cases is significantly increasing. Overspeeding plays a significant role in the severity of the accident, especially in cases of unprotected travellers, pedestrians and cyclists. Traffic control is part of influencing the awareness and education of safe travelling. Police traffic control and accident prevention programmes aim to decrease the number of victims of road traffic accidents.
Źródło:: Internal Security; 2020, 12(2); 313-319
2080-5268
Pojawia się w:: Internal Security
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: A new efficient adaptive control of torsional vibrations induced by switched nonlinear disturbances
Autorzy:: Wasilewski, Maciej
Pisarski, Dominik
Konowrocki, Robert
Bajer, Czesław I.
Powiązania:: https://bibliotekanauki.pl/articles/330002.pdf
Data publikacji:: 2019
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: vibration control
adaptive control
linear quadratic regulator
drilling control
sterowanie drganiami
sterowanie adaptacyjne
regulator liniowo-kwadratowy
Opis:: Torsional vibrations induced in drilling systems are detrimental to the condition of the machine and to the effectiveness of the engineering process. The cause of vibrations is a nonlinear and unknown friction between a drill string and the environment, containing jumps in its characteristics. Nonlinear behaviour of the friction coefficient results in self-excited vibration and causes undesirable stick-slip oscillations. The aim of this paper is to present a novel adaptive technique of controlling vibrating systems. The scheme is based on the linear quadratic regulator and uses direct measurements of the friction torque to synthesize its linear dynamic approximation. This approach allows generating a control law that takes into account the impact of the friction on the system dynamics and optimally steers the system to the desired trajectory. The controller’s performance is examined via numerical simulations of the stabilization of the drilling system. The proposed solution outperforms the comparative LQG regulator in terms of the minimization of the assumed cost functional and the overall stability of the control system under the nonlinear disturbance.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2019, 29, 2; 285-303
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Design of control algorithms for mobile robots in an environment with static and dynamic obstacles
Autorzy:: Piotrowski, Robert
Maciąg, Bartosz
Makohoń, Wojciech
Milewski, Krzysztof
Powiązania:: https://bibliotekanauki.pl/articles/384529.pdf
Data publikacji:: 2019
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: obstacle avoiding
control system
software development
mobile robot
mechatronics
Opis:: This article proposes the construction of autonomous mobile robots and designing of obstacle avoidance algorithms for them. Nowadays, mobile robots are gaining more and more popularity on the customer as well as industrial market, for example as automatic vacuum cleaners or lawnmowers. Obstacle avoidance algorithms play an important role in performance of this types of robots. The proposed algorithms were designed for builds with rather not expensive electronic components, especially sensors with limited precision and dynamics. The project began with the selection of needed parts and building materials as well as designing of the PCB and assembling the whole construction. The project included also designing and developing the software responsible for, among others, implementation of obstacle avoidance algorithms. After the project’s completion, a series of tests in a closed environment was conducted to verify the quality of vehicles’ performance. Results of tests were positive.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2019, 13, 4; 22-30
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Regulations and Corporate Governance Principles Strengthening the Effectiveness of Internal Control, Compliance and Audit in the Capital Group
Autorzy:: Skuza, Sebastian
Lizak, Robert
Powiązania:: https://bibliotekanauki.pl/articles/643418.pdf
Data publikacji:: 2018-12-17
Wydawca:: Uniwersytet Gdański. Centrum Prawa Samorządowego i Prawa Finansów Lokalnych
Opis:: The introduction of the so-called holding law into domestic law has been discussed in Poland for some time now. The need to adopt a holding law seems to be unquestionable, however no amendments in this scope have been introduced hitherto. The aim of this article was to discuss mechanisms of corporate governance compliant with Polish law, allowing for improvements in proficiency and effectiveness of audit, internal control and compliance win a capital group. In the Authors' opinion, these issues not only play key role in common achieving of economic aims by capital group mentioned previously, but they are also a part of supranational need of increasing transparency and security of market economy. Also, it seems unquestionable that a de lege ferenda postulate should be submitted concerning introduction of solutions in the scope of the so-called holding law in the law - Code of commercial companies.
Źródło:: Financial Law Review; 2018, 12, 4; 51-63
2299-6834
Pojawia się w:: Financial Law Review
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Optimal state feedback controller for balancing cube
Autorzy:: Kowalczyk, Adam
Piotrowski, Robert
Powiązania:: https://bibliotekanauki.pl/articles/27314202.pdf
Data publikacji:: 2022
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: balancing cube
control systems
linear quadratic regulator
mathematical model
physical model
Opis:: In this paper, a nonlinear balancing cube system is considered, the concept for which is based on an inverted pendulum. The main purpose of this work was the modelling and construction of a balancing cube with the synthesis of the control system. The control objectives included swing-up and stabilization of the cube on its vertex at an unstable equilibrium. Execution of the intended purpose required, first, deriving a cognitive mathematical model. It was based on the Lagrange method. Next, a mathematical model for control purposes was derived. The project of the physical model of the balancing cube was presented. A stabilization system based on a linear quadratic regulator (LQR) was developed. Moreover, a swing-up mechanism was used to bring the cube close to the upper equilibrium point. The algorithm switching condition was important to enable the correct functioning of the system. The developed control system was verified in the Matlab environment. Finally, verifying experiments and comparisons among models (mathematical and physical) were performed.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2022, 16, 3; 3--12
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Prototype and design of six-axis robotic manipulator
Autorzy:: Pająk, Mateusz
Racław, Marcin
Piotrowski, Robert
Powiązania:: https://bibliotekanauki.pl/articles/2204557.pdf
Data publikacji:: 2022
Wydawca:: Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:: industrial manipulator
servostepper motor
cascade control
stateful machine
Opis:: The paper presents a design for a six-axis manipulator. The design consists of specially designed solutions for housing, planetary gearboxes, and electronics. The manipulator is controlled by a supervisory control system. The use of a series of measuring elements allows tracking of the current position of each axis. This can be used to create a cascade control loop with velocity and acceleration feed-forward. The implemented control algorithm together with the microcontroller software allows one to tune parameters of the controllers for both control loops: inner, related to the speed of the robot; outer, related to its position.
Źródło:: Journal of Automation Mobile Robotics and Intelligent Systems; 2022, 16, 1; 46--52
1897-8649
2080-2145
Pojawia się w:: Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: The dark side of architecture. The power over space and the control of society
Mroczna strona architektury. Władza nad przestrzenią a kontrola społeczeństwa
Autorzy:: Barełkowski, Robert
Powiązania:: https://bibliotekanauki.pl/articles/370486.pdf
Data publikacji:: 2019
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Tematy:: architectural design
architecture
power
control
authoritarian architecture
projekt architektoniczny
architektura
władza
kontrola
architektura autorytarna
Opis:: Architecture goes along power. Power defines possible field of creation and materialization of architecture. This paper analyzes various aspects of relationship between architecture and power, and ponders social control as a central theme of architectural profession. From ancient history, through ages to contemporaneity architectural works were allowed to grow as long as they allowed powers to pursue their social and political agendas.
Architektura idzie w parze z władzą. Władza określa możliwe pola kreacji i materializacji architektury. Artykuł analizuje różne aspekty relacji między architekturą a władzą i rozważa kontrolę społeczną jako główny temat zawodu architekta. Od historii starożytnej, poprzez wieki, aż po współczesność, prace architektoniczne mogły rosnąć, o ile pozwalały władzy realizować swoje plany społeczne i polityczne.
Źródło:: Przestrzeń i Forma; 2019, 40; 33-74
1895-3247
2391-7725
Pojawia się w:: Przestrzeń i Forma
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Fuzzy Controller for Simplified Model of Mobile Vehicle Steering Booster
Autorzy:: Koleda, Peter
Naščák, Ľubomir
Hrčková, Mária
Magdolinič, Róbert
Powiązania:: https://bibliotekanauki.pl/articles/2064614.pdf
Data publikacji:: 2021
Wydawca:: STE GROUP
Tematy:: automobile booster
fuzzy sets
fuzzy controller
speed control
Opis:: The article is aimed on the possibility of fuzzy control of an experimental device that represents the simplified model of automobile steering booster. The main part of model consists of a graphical unit illustrating the control of speed and supporting torque. Based on the structure of fuzzy controller, various counts and configurations of fuzzy sets were defined, whereby the relevant results were achieved by their application on controlled system.
Źródło:: Multidisciplinary Aspects of Production Engineering; 2021, 4, 1; 40--50
2545-2827
Pojawia się w:: Multidisciplinary Aspects of Production Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: An Analysis of a Transformerless Dual Active Half-Bridge Converter
Autorzy:: Sosnowski, Robert
Chojowski, Maciej
Baszyński, Marcin
Powiązania:: https://bibliotekanauki.pl/articles/2175937.pdf
Data publikacji:: 2022
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: DC-DC converter
bidirectional converter
phase-shift control
zero voltage transient
Opis:: This paper proposes a transformerless dual half-bridge converter (TLDAHB). By eliminating the transformer and harnessing the possibility of using a low inductor value, it is possible to minimise the size of the converter. A phase-shift pulse width modulation will result in a wide controlled voltage gain of the converter and operation as buck and boost. The theoretical topology analysis, simulation, and experimental results are presented. Theoretical analysis consists of analysis of power transfer and design. In case of experimental research, particular attention was paid to power transfer and efficiency analysis. Near zero switching transient of voltage in the half-bridge topology results with high efficiency.
Źródło:: Power Electronics and Drives; 2022, 7, 42; 146--158
2451-0262
2543-4292
Pojawia się w:: Power Electronics and Drives
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Local anesthetics and advances in their administration - an overview
Autorzy:: Jung, Robert M.
Rybak, Magdalena A.
Milner, Paweł T.
Lewkowicz, Natalia
Powiązania:: https://bibliotekanauki.pl/articles/972732.pdf
Data publikacji:: 2017
Wydawca:: Instytut Medycyny Wsi
Tematy:: local anaesthesia
pain control
wand
sleeperone
quicksleeper
syringe micro vibrator
Opis:: In dentistry nowadays, local anesthesia is the standard and the backbone for controlling pain Every year, researchers seek and develop new ways in which pain can be alleviated and managed better to ensure patient comfort by focusing on improving aspects such as anaesthetic agents, delivery devices and the techniques involved. The introduction of newer techniques assists dentists in providing enhanced pain relief with reduced pain from injection and fewer adverse reactions. Objective. The purpose of this overview is to highlight the mechanism and efficacy of certain anaesthetic agents, emphasizing complications associated with local anesthesia, as well as the modern techniques that have been developed to improve patient comfort and reduce pain while performing anaesthesia.
Źródło:: Journal of Pre-Clinical and Clinical Research; 2017, 11, 1; 94-101
1898-2395
Pojawia się w:: Journal of Pre-Clinical and Clinical Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Numerical behavior of the method of projection onto an acute cone with level control in convex minimization
Autorzy:: Dylewski, Robert
Powiązania:: https://bibliotekanauki.pl/articles/729267.pdf
Data publikacji:: 2000
Wydawca:: Uniwersytet Zielonogórski. Wydział Matematyki, Informatyki i Ekonometrii
Tematy:: convex nondifferentiable minimization
projection method
subgradient method
acute cone
obtuse cone
Opis:: We present the numerical behavior of a projection method for convex minimization problems which was studied by Cegielski [1]. The method is a modification of the Polyak subgradient projection method [6] and of variable target value subgradient method of Kim, Ahn and Cho [2]. In each iteration of the method an obtuse cone is constructed. The obtuse cone is generated by a linearly independent system of subgradients. The next approximation of a solution is the projection onto a translated acute cone which is dual to the constructed obtuse cone. The target value which estimates the minimal objective value is updated in each iteration. The numerical tests for some tests problems are presented in which the method of Cegielski [1] is compared with the method of Kim, Ahn and Cho [2].
Źródło:: Discussiones Mathematicae, Differential Inclusions, Control and Optimization; 2000, 20, 2; 147-158
1509-9407
Pojawia się w:: Discussiones Mathematicae, Differential Inclusions, Control and Optimization
Dostawca treści:: Biblioteka Nauki

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