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Wyszukujesz frazę "control systems" wg kryterium: Temat


Tytuł:
Constrained controllability of second order dynami cal systems with delay
Autorzy:
Klamka, J.
Powiązania:
https://bibliotekanauki.pl/articles/205540.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
controllability
second-order dynamical systems
delayed control systems
semilinear control systems
constrained controls
Opis:
The paper considers finite-dimensional dynami cal control systems described by second order semilinear stationary ordinary differential state equations with delay in control. Using a generalized open mapping theorem, sufficient conditions for constrained local controllability in a given time interval are formulated and proved. These conditions require verification of constrained global controllability of the associated linear first-order dynamical control system. It is generally assumed that the values of admissible controls are in a convex and closed cone with vertex at zero. Moreover, several remarks and comments on the existing results for controllability of semilinear dynamical control systems are also presented. Finally, a simple numerical example which illustrates theoretical considerations is also given. It should be pointed out that the results given in the paper extend for the case of semilinear second-order dynamical systems constrained controllability conditions, which were previously known only for linear second-order systems.
Źródło:
Control and Cybernetics; 2013, 42, 1; 111-121
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Realization of nonlinear composite systems
Autorzy:
Mullari, T.
Kotta, U.
Nomm, S.
Tonso, M.
Powiązania:
https://bibliotekanauki.pl/articles/969986.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
nonlinear control systems
realization
composite systems
Opis:
The paper studies the realization problem for series and parallel connections of nonlinear single-input single-output systems, described by higher order differential equations. Necessary and sufficient conditions are given for the existence of the classical state space realization in both cases. It is proved that post- and parallel compensators are of no help in overcoming non-realizability. Results are illustrated by an example.
Źródło:
Control and Cybernetics; 2006, 35, 4; 905-921
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Position/force control of manipulator in contact with flexible environment
Autorzy:
Gierlak, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/386967.pdf
Data publikacji:
2019
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
robotics
robot control
nonlinear control systems
Opis:
The paper presents the issue position/force control of a manipulator in contact with the flexible environment. It consists of the realisation of manipulator end-effector motion on the environment surface with the simultaneous appliance of desired pressure on the surface. The paper considers the case of a flexible environment when its deformation occurs under the pressure, which has a significant influence on the control purpose realisation. The article presents the model of the controlled system and the problem of tracking control with the use of neural networks. The control algorithm includes contact surface flexibility in order to improve control quality. The article presents the results of numerical simulations, which indicate the correctness of the applied control law.
Źródło:
Acta Mechanica et Automatica; 2019, 13, 1; 16-22
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Neural control of a robotic manipulator in contact with a flexible and uncertain environment
Autorzy:
Gierlak, Piotr
Powiązania:
https://bibliotekanauki.pl/articles/2233648.pdf
Data publikacji:
2023
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
robotics
robot control
nonlinear control systems
Opis:
This article presents the synthesis of a neural motion control system of a robot caused by disturbances of constraints limiting the movement, which are the result of flexibility and disturbances of the contact surface. A synthesis of the control law is presented, in which the knowledge of the robot's dynamics and the parameters of a susceptible environment is not required. Moreover, the stability of the system is guaranteed in the case of an inaccurately known surface of the environment. This was achieved by introducing an additional module to the control law in directions normal to the surface of the environment. This additional term can be interpreted as the virtual viscotic resistance and spring force acting on the robot. This approach ensured the self-regulation of the robot’s interaction force with the compliant environment, limiting the impact of the geometrical inaccuracy of the environment.
Źródło:
Acta Mechanica et Automatica; 2023, 17, 3; 435--444
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Arduino Module to Research in Surface Physics
Autorzy:
Nowrot, A.
Solecka, B.
Powiązania:
https://bibliotekanauki.pl/articles/2064955.pdf
Data publikacji:
2018
Wydawca:
STE GROUP
Tematy:
control systems
Arduino
photomagnetoelectric effect
Opis:
During the semiconductor or graphene wafers surface were investigated, the Arduino module was applied to control the impact point of the laser beam. While the pulse signal of laser beam impacts to surface selected material and the material is exposed to enough strong magnetic field, the photomagnetoelectric effect takes place. This causes the electrical signal in the measurement coil, which is connected to amplifiers. The paper presents application of Arduino UNO module to control the position in two dimensions (in the XY plane) of investigated silicon or graphene wafers while the photomagnetoelectric effect is measuring. The Arduino drive (through the integrated circuit with power transistors) the steps and shift of a dedicated table with a sample situated at the top of the table. Constructed equipment, based on Arduino board, allows for one step size of 1.25 μm in X-axis and Y-axis, and in effect, the each square millimeter contains 640000 measurement points. We are able also to modify the Arduino program for motors controller any moment. Moreover, it is also possible to apply the obtain method to investigate another semiconductor materials. The commercially available similar devices don’t have all need functions and they are incomparably more expensive.
Źródło:
Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 295--300
2545-2827
Pojawia się w:
Multidisciplinary Aspects of Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On Preventing and Detecting Cyber Attacks in Industrial Control System Networks
Autorzy:
Padée, Adam
Wójcik, Michał
Ćwiek, Arkadiusz
Klimaszewski, Konrad
Kopka, Przemysław
Kozioł, Sylwester
Kuźmicki, Krzysztof
Możdżonek, Rafał
Wiślicki, Wojciech
Włodarski, Tomasz
Powiązania:
https://bibliotekanauki.pl/articles/307944.pdf
Data publikacji:
2019
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
attack preventing
cybersecurity
industrial control systems
Opis:
This paper outlines the problem of cybersecurity in OT (operations/operational technology) networks. It provides descriptions of the most common components of these systems, summarizes the threats and compares them with those present in the IT domain. A considerable section of the paper summarizes research conducted over the past decade, focusing on how common the problem is and in which countries it prevails. The article presents techniques most commonly used in the protection of these systems, with many examples from the nuclear industry given.
Źródło:
Journal of Telecommunications and Information Technology; 2019, 2; 21-28
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aerospace Navigation Technologies in Logistics
Autorzy:
Kharchenko, Volodymyr
Kondratiuk, Vasyl
Powiązania:
https://bibliotekanauki.pl/articles/504182.pdf
Data publikacji:
2015
Wydawca:
Międzynarodowa Wyższa Szkoła Logistyki i Transportu
Tematy:
logistics
navigation
satellite technologies
control systems
Opis:
The work examines the technical aspects of the solution of logistics tasks in the automobile transport domain that are based on satellite navigation technologies, communications and geoinformation systems. Present-day international requirements to the hardware and software of the AVL class are provided.
Źródło:
Logistics and Transport; 2015, 26, 2; 5-10
1734-2015
Pojawia się w:
Logistics and Transport
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automatic control systems for ships fitted with podded propulsion drive (POD)
Autorzy:
Dymarski, C.
Dąbrowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/962799.pdf
Data publikacji:
2004
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
ship propulsion
azimuthal propulsion
ship control systems
Opis:
The paper shows purposefulness and possiblity of automation of ship propulsion systems, especially those of POD type, intended to be used on four Baltic navigation ships: a containership, ro-ro ship, product tanker, as well as river-sea-going ship, designed within the frame of the Eureka "Baltecologicalship" project. Requirements of ship classification societies, and general ones for modern ship control systems were presented, as well as a review and analysis of currently applied power plant automation systems for diesel- electric ships fitted with podded propulsion drive (POD), were performed. Moreover real ways and possibilities of controlling ship s course and speed were indicated. Information contained in this paper may facilitate selecting appropriate design assumptions for a propulsion control system to be applied on the above mantioned ships.
Źródło:
Polish Maritime Research; 2004, S 1; 83-86
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Interception of a free-rotating satellite: an autonomous rendezvous scenario
Autorzy:
Seweryn, K.
Banaszkiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/307630.pdf
Data publikacji:
2007
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
satellite rendezvous
autonomous control systems
docking maneuvers
Opis:
The spacecraft's lifetime is often limited by reliability and redundancy of its components. Furthermore, serious restrictions on duration of spacecraft operations are posed by finite amount of fuel or cooling agent. It is also clear that once a satellite is launched, it is extremely difficult to replace/modify its hardware on the orbit. Future spacecraft missions, especially huge planetary orbiters, will require servicing support from autonomous unmanned satellites. In this paper we introduce and analyze a new scenario for interception of a free rotating satellite ion a Keplerian orbit. The scenario is divided into several stages to be executed by the servicing satellite: attitude determination of the target object; own motion planning; determination of the optimal target position and orientation before docking; controlled approach, i.e., decreasing of a range between satellites; orbiting of the servicing satellite around the target satellite; docking, i.e., radial degreasing of the intersatellite range till the satellites contact, while keeping constant the relative orienta- tion between them. The control algorithm for the servicing satellite motion during its maneuvers is described. Finally, a few examples of satellite motion simulations according to the proposed scenario are presented.
Źródło:
Journal of Telecommunications and Information Technology; 2007, 1; 59-62
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of orthogonal methods on design process of vibration control system for cantilever beam with non-collocated piezo-elements
Autorzy:
Koszewnik, Andrzej
Powiązania:
https://bibliotekanauki.pl/chapters/32083872.pdf
Data publikacji:
2021
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
vibration control systems
flexible structures
cantilever beam
Opis:
In this paper, we consider the influence of the model reduction on the dynamics of the real closed-loop system. A simple cantilever beam is the object of consideration since we are able to formulate the exact analytical model of such structure. As a result of reduction, the model with low frequency resonances is usually separated from the high frequency dynamics because high frequency part of the model is naturally strong damped. In order to estimate dynamical system for control purposes in the paper, we applied a few orthogonal methods such as: modal and Schur decompositions. As it is shown, all methods well calculate resonances frequencies but generate different antiresonances frequencies. In the vibration control systems, the antiresonances play essential role. They influence the stability and dynamics of the closed-loop systems. The controllers designed for different reduced models were applied to real full plant. Dynamics behavior of the closed-loop systems with such controllers were analyzed and compared. The theoretical considerations were confirmed by experimental investigations. In conclusion, we should carefully choose model reduction methods in the design process of the vibration control system.
Źródło:
Methods and tools in CAD – selected issues; 39-49
9788366391871
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Adaptive Automatic System of Controlling Acceleration Characteristics of Electromechanical Converters with an Observing Identification Tool
Autorzy:
Kalabayeva, Aidana
Wójcik, Waldemar
Kashaganova, Gulzhan
Togzhanova, Kulzhan
Sarybayeva, Zhaksygu
Powiązania:
https://bibliotekanauki.pl/articles/27311924.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
electromechanical converters
adaptive system
control systems
identification
Opis:
The operating modes of the automatic control system for electromechanical converters for synchronization of rotor speeds have been developed and investigated. The proposed automatic speed control system allows adjusting the slave engine to the master one in a wide range from 0 to 6000 rpm. To improve the synchronization accuracy an adaptive algorithm is proposed that allows to increase the synchronization accuracy by 3-4 times. The proposed model of an adaptive automatic control system with an observing identification tool makes it possible to minimize the error in the asynchrony of the rotation of the rotors of two electromechanical converters.
Źródło:
International Journal of Electronics and Telecommunications; 2023, 69, 3; 615--620
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Remarks on the steady-state accuracy of a feedback control system
Autorzy:
Ferrante, A.
Krajewski, W.
Lepschy, A.
Viaro, U.
Powiązania:
https://bibliotekanauki.pl/articles/205550.pdf
Data publikacji:
2000
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
feedback control systems
robustness
steady-state response
Opis:
The paper deals with the steady-state response of a feedback control system to the canonical inputs. For its characterization it seems useful to introduce the notion of accuracy index mi beside the standard notion of loop type v. This index is assumed to be equal to the power of t in the analytic expression of the canonical input that leads to a finite nonzero deviation between the actual and the desired responses. When applied in the control design procedure, the accuracy index mi allows to achieve a steady-state performance that is more satisfactory than the one obtainable with reference to the loop type only. The conditions under which a single-loop feedback control system exhibits a prescribed value of mi, given the value of v, are derived and discussed with particular regard to their robustness.
Źródło:
Control and Cybernetics; 2000, 29, 1; 51-67
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Podpora výuĉby PLC systémov na vysokých školách v SR
Support in the Education PLC System at Universities in Slovakia
Autorzy:
LUKÁĈOVÁ, DANKA
BÁNESZ, GABRIEL
Powiązania:
https://bibliotekanauki.pl/articles/457949.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Rzeszowski
Tematy:
industrial control systems
remote real experiments
education
Opis:
Aj uĉiteľské študijné programy na univerzitách reagujú na potreby trhu práce a zaraďujú do svojich študijných programov predmety, v ktorých sa študenti oboznamujú s novými materiálmi a technológiami priemyselnej praxe. Jednou z týchto technológií sú priemyselné riadiace systémy PLC.Katedra techniky a informaĉných technológií na PF UKF v Nitre do svojich študijných programov zaradila 4 predmety, ktoré poskytujú študentom základné vedomosti o PLC. Na zvýšenie záujmu študentov o tento predmet sa rozhodli vytvoriť vzdialené laboratóriá, ktoré môņu pouņívať študenti v dištanĉnej forme a zároveň aj v rámci kontaktných hodín na cviĉeniach. Pre vytvorenie vzdialených laboratórií pre pneumatické a hydraulické systémy navrhujú pouņiť technické prostriedky vyuņívajúce prvky PLC spolu s internetovým rozhraním pre vzdialený prístup a priamy prístup, metodiky a vzdelávacie materiály vhodné pre zaradenie do vzdelávacieho procesu. Vzdialený prístup k laboratóriám spolu s kontaktným vyuĉovaním umoņnia uņívateľovi získavať nové poznatky z oblasti pneumatických a hydraulických systémov, ĉo v koneĉnom dôsledku prispeje k zvýšeniu ich kompetencií z predmetnej oblasti.
Study programs oriented on teacher preparation at universities respond to the needs of the labor market and include subjects in their study programs where students are acquainted with new materials and technologies of the industrial practice. PLC industrial control systems are one of these technologies. The Department of Technology and Information Technologies at the Faculty of Pedagogy of UKF in Nitra included four subjects in its study programs, which provide students some basic knowledge about PLC systems. To increase the interest of students in this subject, they decided to create remote laboratories that can be used by students in a distance form of study, as well as within contact hours during exercises. To create remote laboratories for pneumatic and hydraulic systems will be used hardware elements using the PLC together with a web interface for remote access and direct approach, methodology and educational materials suitable for inclusion in the educational process. Remote access to laboratories along with contact teaching allows the user to gain new knowledge in the field of pneumatic and hydraulic systems. The present proposal will by its outputs contribute to increasing competencies of teachers of technical subjects in this area.
Źródło:
Edukacja-Technika-Informatyka; 2017, 8, 3; 100-105
2080-9069
Pojawia się w:
Edukacja-Technika-Informatyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aspects of Microsoft Kinect sensor application to servomotor control
Autorzy:
Parzych, M.
Dąbrowski, A.
Cetnarowicz, D.
Powiązania:
https://bibliotekanauki.pl/articles/200196.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
gesture-based control systems
MS Kinect
Arduino
servomotor control
Opis:
This paper presents the design process of a gesture control system based on the Microsoft Kinect sensor. An environment enabling implementation of the integrated system using a variety of equipment and software was selected and prepared. A method for integrating the sensor with the Arduino environment has also been discussed. Algorithms for remote gesture control of the given servodrive angle and the position of the robot arm gripper were prepared. The results of several experiments, which were carried out in order to determine the optimal method for starting, controlling, and stopping the drive and for assessment of the accuracy of the proposed method for the arm control, are presented.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2014, 62, 3; 595-601
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
General specification of multi-robot control system structures
Autorzy:
Zieliński, C.
Winiarski, T.
Powiązania:
https://bibliotekanauki.pl/articles/199952.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
robot control systems
specification of controllers
multi-robot systems
Opis:
The paper deals with structuring robot control systems. The control system is decomposed into distinct agents. An agent, in general, is responsible for control of its effector, perception of the environment for the purpose of its effector control, and inter-agent communication. The behaviour of the agent is governed by its set of transition functions. The control system consists of two tiers – the upper tier is defined by the flow of information between the agents and the lower tier is defined by formal specification of each agent’s behaviour (influence on the environment, gathering sensor readings, production and consumption of the information for/from the other agents). The paper presents one of the examples of utilization of this approach. The example concerns the multi-robot drawing copying system.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2010, 58, 1; 15-28
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł

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