Temat: SYSTEM - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The wireless hydrostatic transmission control by the use of mobile technology
Autorzy:: Kucybała, P.
Pobędza, J.
Sobczyk, A.
Powiązania:: https://bibliotekanauki.pl/articles/248044.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fluid power control system
hydrostatic transmission system
wireless control system
Opis:: The paper presents the concept of a new approach for remote control and monitoring of parameters of mobile or stationary machines in real time on the example of the hydrostatic transmission drive test stand. The proposed system control and monitoring is the mobile system which is closely related with the three applications written in a different programming languages, such as: java (Android) – mobile application runs on the tablet, C language – server application joins xPC Target with tablet, PHP – admin panel to manage mobile control platform. Controlling of the hydrostatic drive stand is implemented using an application installed on the tablet. This application is connected with computer’s real-time (xPC Target) module, generated in Matlab. The computer with xPC Target is equipped with a measuring-control card, to which the control signals are transmitted. This hardware-software component plays the connecting role between machine and operator of the mobile platform installed on the tablet. The application allows observe important parameters such as pressure, volumetric flow rate, temperature, velocity, torque in real-time, as well as, it enable, by use of special graphic slider on the tablet’s screen, to set control parameters such as: speed of electric motor, the opening and switching positions of the directional valve, as well as, setting the load by pressure relief valve. Based on this system research related to the verification of system operation were performed for different setting of the hydrostatic transmission drive speed controller, and selected results are presented in the paper.
Źródło:: Journal of KONES; 2014, 21, 2; 169-175
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: A proposition of a torsional-bending vibrations modelling of combustion engines
Autorzy:: Dąbrowski, Z.
Chiliński, B.
Pankiewicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/244766.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: rotational system
system of differential equation
crankshaft system
numerical solutions
Opis:: The article presents the problem of modelling coupled bending-torsional vibrations in crank systems. Because during the design of modern drive systems a growing number of phenomena are taken into account, model description of such vibrations has a practical meaning. Commonly used models of dynamics of systems assume the independence of torsional and bending vibrations, which leads to simultaneous analysis of transverse and angular vibrations. Further analysis is carried out with the use of superposition principle. Such an approach is justified in the case of quite rigid drive shafts, where vibrations are relatively small. Current trends in the design of reducing weight, reduction of toxic emissions and reducing fuel consumption, lead to the situation where shafts in crank systems become less stiff. Therefore, phenomena neglected earlier may have significant meaning. Analysis of couplings of transverse and torsional vibrations is so important that the occurrence of these phenomena usually leads to new critical states, which may be especially dangerous for engine operation. Considerations on the reasons of the occurrence and kinds of vibration couplings were presented in the introduction of the article. Further part of the article proposes the linear-bending model of the crankshaft, where transverse and angular displacements are dependent. It was tantamount to the assumption of linear relation between the vector of generalized co-ordinates and generalized forces occurring in the system. The next chapter presents the system of equations describing the dynamics of the crankshaft together with a discussion of the co-ordinate system used in the considerations. In addition, there were presented the results of numerical simulations in frequency domain confirming the conclusions taken from the analysis. The whole paper is concluded with synthetic conclusions on the formulated system of equations, simulations and the influence of the coupling on the dynamics of the whole crank system.
Źródło:: Journal of KONES; 2016, 23, 4; 71-77
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Selected aspects of the maintenance system optimisation of the Polish Armed Forces helicopters
Autorzy:: Kowalski, M.
Waślicki, P.
Żak, J.
Powiązania:: https://bibliotekanauki.pl/articles/241597.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: helicopters
maintenance system
optimization of system
Opis:: The maintenance of helicopters at the airports of the Polish Armed Forces in the state of technical efficiency determines the possession – by the entity securing their maintenance, repair – of appropriate resources and the maintenance system. The article presents the current state of the operation processes of helicopters in the Polish Army. The characteristics of the helicopter maintenance system model and the basic assumptions were described, and the mathematical records of input data to the system were identified and presented. The selected elements of the optimisation task, its decision variables, and constraints were formulated. The initial assessment of the quality of the proposed solution of the helicopter maintenance system model. The essence of the system optimisation problem, which relates to minimising the cost function and maximising the system’s readiness function, was emphasised. In addition, an example of appropriateness of applying such an approach is presented on the basis of the School Aviation Base. The article was concluded with a short summary, which stressed the importance of this type of the optimisation system.
Źródło:: Journal of KONES; 2018, 25, 3; 289-297
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Structuring of the safety evaluation model for the road transport system
Autorzy:: Woropay, M.
Bojar, P.
Powiązania:: https://bibliotekanauki.pl/articles/243500.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
folded system
forcing factors
Opis:: The transport system are sociotechnical systems in which the direct realization of the tasks is dealt with by an executive subsystem consisting of the elementary subsystems of a human - a technical object (an operator - a means of transport) type realizing the tasks within the system environment. In respect of a human located within a transport system the most significant criterion in the evaluation of the transports being realized is their safety. The safety level of the task realization is influenced by the risks resulting from the interaction of the forcing factors, affecting an elementary executive subsystem. These factors may be divided into [8]: working, External, antropotechnical. In order to structure safety evaluation model of the road transport system we need to: build the algorithm for evaluating safety of analysed system, establish safety criterion for the system's performance, structure a model using the algorithm of safety evaluation of the system. Due to the complexity of the systems being analysed in the paper, it has been attempted to evaluate the influence of the forcing factors on the safety of this system operation.
Źródło:: Journal of KONES; 2008, 15, 3; 581-590
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Diagnostics of modern diesel engines on the example of Fiat 1.3 JTD MultiJet engine
Autorzy:: Prajwowski, K.
Powiązania:: https://bibliotekanauki.pl/articles/245043.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine diagnostics
sensor system
actuator system
oscilloscope signal waveforms
diagnostyka silnika
system czujników
system siłownika
Opis:: Initially, electronic components replaced the mechanical ones to make various systems more reliable. Mechanical control systems, due to the wear of movable parts and imprecise adjustment, were affected by large errors, which are not shown by electronic circuits operating according to constant set-points. Then, a sharp increase in electronisation was associated with the tightening of exhaust gas emission regulations. Progress in some cases is forced by environmental protection, in other ones by market competition. Modern motor vehicles, slow moving vehicles, military vehicles, etc., are the technical systems being constructed using the latest developments in many fields of science, first of all in mechanics and machine engineering, electrical engineering, electronics, information technology, and chemistry. The rapid development of electronics has led to an increase in the number of electronic components in motor vehicles in all systems, starting with an engine, which has been modified first, to comfort and infotainment systems. The paper presents example measurements of sensors and actuators of an engine with Common Rail fuel supply system on the example of Fiat 1.3 JTD MultiJet engine. The measurements were made using various diagnostic instruments, such as a diagnostic tester, a multimeter or an oscilloscope. Sometimes, the reading of error codes with a diagnostic tester itself is not enough and it is necessary to check the signal waveform with an oscilloscope, which has been presented in this paper.
Źródło:: Journal of KONES; 2016, 23, 3; 403-409
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Trimming surfaces in the automatic plane control process
Autorzy:: Krawczyk, M.
Zajdel, A.
Powiązania:: https://bibliotekanauki.pl/articles/246725.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: optionally piloted airplane
automatic control system
trimming
trim control system
automatyczny system kontroli
Opis:: The directions and speed of development of plane avionics systems are determined by three factors: economical consideration, required safety levels, and optimized working conditions for the pilot. This article presents the concept of a system in which the automatic control and stabilization process is effected because of coordinated deflections of trimming surfaces: the rudder, the elevator, and the ailerons. In particular, this article presents the structure of the system in the longitudinal movement steering channel by way of deflection of the trimmer of the elevator. Furthermore, it discusses the results of numerical model simulations, which are compared to the results obtained during in-flight tests. Additionally, this article specifies general technical requirements for the servomechanisms intended for the system class discussed herein. Selection of sufficiently large amplification makes control the plane with relatively small deflections of the trimmer. In particular, relationship between the deflection of the elevator and the deflection of trimmer, view of a tail plane and dimensions of the elevator trimmer, the structure and results of the pitch angle control system and simulation are presented in the article.
Źródło:: Journal of KONES; 2017, 24, 1; 223-230
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Types of the state space of complex technical systems
Autorzy:: Pająk, M.
Powiązania:: https://bibliotekanauki.pl/articles/246047.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: terotechnology
modelling
technical system
state of system
Opis:: Considered in the paper complex technical system consists of a set of technical objects. These objects are the elements of the system. An object is treated as an element of a system if it is characterized by a specified set of features. Technical object features can be divided into two groups: additive and constitutive. Additive features are independent from relations inside the system, but constitutive ones depend on it. System features resulted from additive features of its elements can be defined as a sum of features of particular elements of the system. Unfortunately, in case of constitutive features of the system this way of defining is not proper. So, to identify the system itself, it is necessary to determine the unique set of the system features. Considering complex technical systems, it was stated that a state of a system is defined by instantaneous values of cardinal features of the system. So, the state of a system can be expressed in their features' space. But the set of the cardinal features of the system depend on the considered issue. In the field of machines maintenance and operation the technical systems can be analysed for different points of view. Therefore, the state of the system can be described in different features' spaces. In the paper different types of the system features' spaces are introduced. Thanks to the defined spaces application it is possible to create coherent description of all types of processes which are executed in a technical system during operation and maintenance phase.
Źródło:: Journal of KONES; 2011, 18, 3; 323-330
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Development of constructions of electrical equipment and fuel systems for special-purpose vehicle based on the solutions of Zakład Doświadczalny Biskupiec sp. z o.o.
Autorzy:: Gąsior, R.
Kucharewicz, K.
Powiązania:: https://bibliotekanauki.pl/articles/245007.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dashboard
regulator
fuel system
on-board system
Opis:: The aim of this article is to describe the development of electrical equipment systems for military vehicles and fuel systems of these vehicles. Both electrical installations and fuel systems of military vehicles should meet strict quality requirements and resistance requirements to various exposure specified in the standards and other normative documents. This applies both to new vehicles and to the vehicles, which have been in service for many years. The article presents electrical components and fuel systems of military vehicles in which the fulfilment of quality and electromagnetic compatibility requirements and the use of innovative solutions constituted the leading targets in their construction. A great emphasis during the construction was placed not only on the fulfilment of functional requirements but also on the degree of reliability, maintainability, technical handling flexibility and the use of modern materials that can be recycled after the liquidation of the product. The presented fuel systems meet strict modern requirements and are worth recommending for both the application in the equipment that has already been operated and in newly designed vehicles.
Źródło:: Journal of KONES; 2015, 22, 1; 95-106
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Complex management system of the aviation training process
Autorzy:: Jemielniak, M.
Kowalski, M.
Powiązania:: https://bibliotekanauki.pl/articles/245390.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aviation training system
pilot training
pilot education system
Opis:: This paper concerns the issue of management and assessment of the aviation training process, which takes into account the elements changing over time: the state of training, its level, quality and mechanisms rationalising the organisational activities and costs. The elements of the complex management system of the aviation training process, which includes probabilistic models for projecting the reliable, safe and effective aviation training, taking into account the requirements imposed by rules, standards and regulations of civil and military aviation, were discussed. In general, its structure, internal modules and exemplary tables of the analysis and assessment of the aviation personnel updates and the validity of permissible breaks during flight by aviation personnel. A schematic diagram of introducing the input data, main parameters, statistical data and expected results in the form of the training schedule, the schedule of the aircraft necessary moving, indicators of the training analysis and assessment, safety and reliability, were mentioned. The mathematical notations of input data and examples of the offered training indicator of aviation personnel were presented. The criterion global function, which exposes the maximisation of the aviation personnel training, as well as the maximisation of the performed flying time of a given type of aircraft, and the minimisation of operating costs of the specific aviation training, was determined. The paper was completed with a conclusion that shows the advantages of the proposed complex management system of the aviation training process.
Źródło:: Journal of KONES; 2016, 23, 3; 233-240
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Analysis and evaluation of application of car modular systems in polish road transport
Autorzy:: Muślewski, Ł.
Lewalski, M.
Woropay, M.
Powiązania:: https://bibliotekanauki.pl/articles/246606.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
car modular system
SWOT analysis
efficiency
Opis:: This study presents an analysis and evaluation of application of European Car Modular Systems in the Polish road transport. Those systems and respective terminology have been analysed and classified. Application of such systems in other countries of the European Union has been described. SWAT analysis has also been carried out in order to enable the most optimal choice of modular system in freight transport to match the condition and characteristics of the Polish road infrastructure. The systems have also been analysed in terms of efficiency and the analysis was performed on the basis of a selected research object – a transport company. An analysis of costs and estimated profits from transport services to be provided by those systems has been carried out on the basis of the research object in comparison with costs borne by the considered company with currently used transport means. This study shows that taking into consideration the results of analyses, safety aspect, road infrastructure and energy efficiency of the vehicles it was found that the proposed oversized vehicles could be implemented to be used on the Polish roads. The analyses and tests performed for a transport logistic company discussed in this article have demonstrated that the proposed modular systems will undoubtedly allow reducing significantly the costs of transport services by increasing load capacity of vehicles.
Źródło:: Journal of KONES; 2015, 22, 4; 211-220
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Remote controlled vehicle for removal of disasters
Autorzy:: Typiak, A.
Powiązania:: https://bibliotekanauki.pl/articles/245563.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: disaster removal
remote control system
hydraulic power system
Opis:: This paper presents an analysis of various natural and man-made disasters being angled as possibilities of usage of remote control or autonomous machines and vehicles. The certain requirements which such machines and vehicles have to meet to remove effects of natural disasters and local military conflicts or terrorist attacks are described. Proposal for remote-controlled vehicle assigned for operations in conditions hazardous to human live is presented. The value of unmanned vehicles is directly related to the applications to which it can be successfully applied. This paper will highlight applications, missions, and capabilities that have been demonstrated on the "Lewiatan " platform to date as well as future application and mission considerations. This platform – assigned for both water and land operations - is equipped with remote control, surroundings observation and visualization systems. In this paper the advantages of hydrostatic power systems as the power transmission units for unmanned vehicles have been also presented. Resolving problems with navigation of vehicles will allow expansion of it 's applications from a military point of view in the upcoming few years, to a wide range of applications in times of crisis with direct human life threat.
Źródło:: Journal of KONES; 2009, 16, 3; 447-453
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Concept of tiltrotor UAV control system
Autorzy:: Ciopcia, M.
Szczepański, C.
Powiązania:: https://bibliotekanauki.pl/articles/247022.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: UAV
tiltrotor
control system
rotor przechyłu
system sterowania
Opis:: Nowadays, civil UAV industry market grows rapidly. This expansion is followed by the new requirements and expectations against UAVs, which force their constructors to look for less typical solutions. Expected long time endurance and range are the typical examples of such expectations. Clients are often looking for UAV with VTOL ability and time of flight much greater than 30 minutes and long range. They want to inspect large areas, i.e. between major cities without need of paying for building and maintaining developed aircraft infrastructure. Example of UAV with low infrastructure requirements are multirotors. Major disadvantage of them is short flight time. Elongating time of flight is hard to achieve by classical multirotor with standard Li-Pol batteries available on the market. They have too low energy density in currently used technology. Alternative power solutions, like fuel cells, have low financially rewarding factor, which cause whole projects to be unprofitable. Foregoing circumstances force engineers to find less usual ways for improvement energy efficiency, which will cause extending the time and range of flight. One of them is a tiltrotor. Tiltrotors are hybrid solutions – they combine airplane and multirotor capabilities to achieve features, which exclude each other in classical constructions. Aircraft-like wing make it able to use its lift-to-drag ratio to achieve energy savings, higher top speed and extended range in comparison with multirotors. UAV is also equipped with multiple multirotor-style engines with additional capability to rotate itself in pitch. In horizontal engine position, vehicle behaves like classical multirotor – allowing pilot to hover and perform VTOL manoeuvres. When engines are tilted to vertical position, whole UAV get performance similar to airplane – high speed and flight endurance. In the other hand, practical implementation of tiltrotor solution can be problematic: simulation, steering and controlling such aircraft in transition state are complex tasks. Moreover, designed aircraft should follow major rule connected with multirotors: Should have as simple, robust mechanical design as it can. Proposed article will concentrate on concept and preliminary design of fly-by-wire steering system with unique properties for tiltrotor. One of such properties will be unification of steering method – which eliminates need for switch and setting initial conditions for control subsystems, when flight procedure requires changing flight mode. Second important improvement will be possibility to use transitional states as intermediate state between propeller driven fly and gliding – which allow achieving wide spectrum of flight speeds. Moreover, huge number degrees of freedom (at least 9) create new opportunities for steering optimization. Extensive thrust vectoring abilities of such UAV could not only implicate substantial efficiency improvement of multirotors, but also improve its manoeuvrability. The article will focus on basic concepts of kinematics, steering of such UAV and show proposition of energyusage oriented optimization for its control trajectories. To let mechanical design be simple, all control and steering methods will be implemented in software, which will implicate complex structure of steering system. Overcoming complexity of software should be profitable in relation to expected improvements of UAV capabilities.
Źródło:: Journal of KONES; 2017, 24, 1; 83-89
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: A genetic fuzzy approach to estimate operation time of transport device
Autorzy:: Smoczek, J.
Szpytko, J.
Powiązania:: https://bibliotekanauki.pl/articles/247484.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: failure prediction
fuzzy genetic system
material handling system
Opis:: The classic approach to evaluate the probability that an operational system is capable to operate satisfactorily and successfully perform the formulated tasks is based on availability that is coefficient which is determined based on the history of down-time and up-time occurring, while the risk-degree of down-time occurring strongly depends on the actual operational state of a system. The intelligence computational methods enable to create the diagnosis tools that allow to formulate the prognosis of operating time of a system and predict of failure occurring based on the past and actual information about system's operational state, especially genetic fuzzy systems (GFSs) that combine fuzzy approximate reasoning and capability to learn and adaptation. The paper presents the fuzzy rule-based inference system used to predict the operating time of exploitation system according to the specified operational conditions. The proposed algorithm was used to design the fuzzy model applied to estimate the operating time of a system between the actual time and predicted time of the next failure occurring under the stated operational parameters. The fuzzy system allows to prognoses the time of the predicted failure based on the operational parameters which are used to evaluate the actual operational state of the system. The attention in the paper is focused on the evolutionary computational techniques applied to design the fuzzy inference system. The paper proposes the genetic algorithm based on the Pittsburgh method and real-valued chromosomes used to optimize the knowledge base and parameters of antecedents and conclusions of the Takagi-Sugeno-Kang (TSK) fuzzy implications. The paper is the contribution to the GFSs, which aim is to find an appropriate balance between accuracy and interpretability, and also contribution to the research field on the diagnosis methods based on soft computing techniques. The evolutionary algorithm was tested for designing the fuzzy operating time predictor of material handling device.
Źródło:: Journal of KONES; 2011, 18, 4; 601-608
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: The control system for a manipulator with two degrees of freedom for water hydrostatic transmission drive
Autorzy:: Kucybała, P.
Sobczyk, A.
Powiązania:: https://bibliotekanauki.pl/articles/248151.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fluid power control system
hydrostatic transmission system
water hydraulics
Opis:: The article presents concepts of control of the manipulator with two degrees of freedom, which uses a water hydraulic power unit to drive the actuators. The proposed control system is based on the use of electromagnetically controlled “rosettes valve” and proportional flow control valve. The control system is implemented using a computer equipped with a module for the real-time operating system (XPC Target) working in connection with the environment Matlab/Simulink. Controlled variable of the drive system is the displacement of the individual hydraulic cylinder and after determining manipulator kinematics, any point of the object in operating space. The positioning error of individual manipulator elements will be determined during the test in terms of different control algorithms, using the PID controller and PWM signal. In addition, it analyses the impact of changes in the velocity of the piston rod for the boom mechanism and the arm mechanism. An important aspect of the presented hydrostatic drive system is the use of water as a medium that physical and chemical properties are different from commonly used hydraulic oil, and which is friendly to the environment and meet the high cleanliness requirements for the fluid used to transfer the hydrostatic energy. Therefore, the control system requires a different approach, tied with synchronous control valves ON/OFF and proportional control flow regulators to achieve high accuracy.
Źródło:: Journal of KONES; 2015, 22, 3; 125-132
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: The use of digital hydraulic to the position control of hydraulic cylinder
Autorzy:: Kucybała, P.
Sobczyk, A.
Powiązania:: https://bibliotekanauki.pl/articles/244161.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fluid power control system
hydrostatic transmission system
digital hydraulics
Opis:: The article presents the method of controlling the position of the hydraulic cylinder using hydraulic valves on/off with an appropriate strategy for digital control. Main elements of the hydraulic system under consideration include a group of electromagnetic hydraulic valves and hydraulic cylinder single acting. The control system was implemented in the environment of the real-time system based on MATLAB/Simulink. The digital control strategy is based on a fast enough on and off switching valves causing corresponding motion of the cylinder to the required position. This article presents the advantages and disadvantages of this type of control about the system with the proportional control system. The accuracy of this kind of control depends on the structure, properties of the valves or their static and dynamic characteristics. The results of analysis of the control system have the possibility of controlling the positioning hydraulic cylinder with a rather high accuracy, which can be used in place of proportional control systems. The use of digital control system allows, under certain conditions to obtain cost savings related to a reduction in energy consumption, to get a much better adaptation to variable control systems. This concept is an interesting alternative for the conventional control system and provides opportunities for application in systems, where conventional control is very expensive e.g. water hydraulics or to the clear systems where the use of hydraulic proportional technique is not necessarily, but depends on the user to the possibility of obtaining good quality control at a relatively low cost.
Źródło:: Journal of KONES; 2016, 23, 3; 297-302
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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