Temat: Maintenance System - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Optimisation of aircraft maintenances in the polish armed forces
Autorzy:: Kowalski, M.
Waślicki, P.
Żak, J. M.
Powiązania:: https://bibliotekanauki.pl/articles/246572.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: aircraft
maintenance system
optimisation task
Opis:: Maintaining the aircrafts (AC) of the Polish Armed Forces in operating condition is determined by adequate resources to secure maintenance and repairs possessed by the companies implementing these tasks on them. The article characterises and then describes formally the Aircrafts Maintenance System in the Polish Armed Forces. The assumptions of the aircraft maintenance system model, proposed model structure, and mapping of aircraft maintenance performance were described. The most important elements (such as data, decision variables, boundary conditions and assessment criterion function) of an optimisation task aimed at minimising the executed aircraft maintenances’ costs were formulated. For this purpose, the record of evaluation criterion functions of the companies performing aircraft maintenance was shown. The article was completed with a conclusion, which underlined the importance of the proposed optimisation model. The optimisation model proposed in the article allows evaluating the aircraft maintenances’ organisation and their parameters. The formal record concerns both in the case of one-dimensional maintenance (one aircraft type) and multi-dimensional one (various aircraft types).
Źródło:: Journal of KONES; 2016, 23, 4; 225-235
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

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

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Implementation the GLONASS system in aeronautical application
Autorzy:: Ćwiklak, J.
Krasuski, K.
Powiązania:: https://bibliotekanauki.pl/articles/246602.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Remote Maintenance System
air navigation
GLONASS
accuracy
Single Point Positioning method
Opis:: The article determines the accuracy of positioning of the aircraft with the use of a satellite system GLONASS. In addition, the SPP (Single Point Positioning) absolute positioning method was utilized in research test in article. Research test was carried out in the new software APS (Aircraft Positioning Software), used for precise GPS/GLONASS satellite positioning in air navigation. The article describes the research method and presents mathematical formulas of the SPP positioning method. In the research test, the positioning accuracy of the Cessna 172 aircraft was obtained based on comparison of results between APS and RTKLIB software. The difference of Cessna 172 aircraft coordinates in the XYZ geocentric frame between the APS and RTKLIB solution is between -7 m to +6 m. The research material developed in the article comes from an aeronautical experiment carried out with the Cessna 172 aircraft for the EPDE military airport in Deblin.
Źródło:: Journal of KONES; 2018, 25, 3; 121-128
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Method for assessment and control of availability of executive subsystem of a transportation system
Autorzy:: Woropay, M.
Migawa, K.
Powiązania:: https://bibliotekanauki.pl/articles/246869.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
availability
operation and maintenance process
Opis:: In this work, a method for assessment and control of availability of executive subsystem consisting of elementary subsystems of the type has been presented. The goal of the executive subsystem is to perform the assigned transport tasks over set routes, with a given frequency, according to a set schedule. A proper accomplishment of the transport task is possible only if the required number of technical objects (transport means) is prepared to perform the assigned task in a given time. Among many significant criteria used for assessment of a transport system operation there is one of special importance that is availability of the executive subsystem to perform the assigned tasks. Availability of the executive system to perform the assigned tasks depends on availability of particular technical objects (transport means) used in the system of transportation and their number. On the basis of the above statement, it can be said that control of the executive subsystem availability can be carried out both by selecting technical objects with the required availability and matching the required number of the objects which are to be used in the system in order to ensure proper accomplishment of the transport tasks. In this work there has been discussed a method for determination of the required availability of a single object as well as the required number of technical objects indispensable to perform appropriately the assigned transport task, on the basis of the transportation system availability assessment. Availability of the transportation system is determined on the basis of a mathematical model of the operation and maintenance process of technical objects, in the studied transportation system. Exemplary results have been presented on the basis of experimental data, obtained from the tests carried out in a real operation and maintenance system of transport means.
Źródło:: Journal of KONES; 2012, 19, 3; 491-498
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Damage rate as a reliability characteristics having significant influence on the operational quality of the technical object 375TS being operated and maintained in the transport systems
Autorzy:: Muślewski, Ł.
Wdzięczny, A.
Powiązania:: https://bibliotekanauki.pl/articles/244883.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
reliability
efficiency
maintenance
failures
Opis:: This paper presents theoretical basis for evaluation of the transport system operation quality. A general evaluation model was built, and further part of the paper is to consider the theme of damageability of the means of transport, as a reliability feature, constituting one of the most important criterion to evaluate the transport system operation. Based on the analysed references in question as well as on the results of our own research it has been found that the damages to the means of transport, being utilised within the transport systems, are a result of interaction of various forcing factors. Some number of the damages results from natural wear of the means of transport elements, which is a natural phenomenon, while the remaining damages may be caused by an inefficient repair of the previous damage. This leads to so called secondary damages to the repaired element, occurred within a short time interval, which is a proof of inappropriate organization of the repairs, poor training level of the repairing teams, limits related to pre and after repair diagnosis, which directly affects reliability of the means of transport and consequently the operation quality of the transport systems in which they are being operated and maintained. Based on the analysis of the investigation results it has been found that the primary damages are independent on one another and they occur randomly. The secondary damages are dependent, because their occurrence depends on prior occurrence of the primary damage and the effect of its improper repair or improper repair of the next secondary damage.
Źródło:: Journal of KONES; 2008, 15, 4; 375-384
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: Means of transport repairs efficiency analysis and assessment method
Metoda analizy i oceny skuteczności napraw środków transportu
Autorzy:: Woropay, M.
Wdzięczny, A.
Kolber, P.
Powiązania:: https://bibliotekanauki.pl/articles/242689.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: system transportowy
niezawodność
skuteczność
naprawa
uszkodzenie
transport system
reliability
efficiency
maintenance
failures
Opis:: The operation and maintenance factors as well as the destructive processes of the technical object elements cause unfavourable changes of the values of the significant functional features causing failures. A damage to a technical object has been defined as exceeding admissible limiting values by significant values of the features describing its elements. Based on the analysed references in question as well as on the results of our own research it has been found that the damages to the means of transport, being utilised within the transport systems, are a result of interaction of various forcing factors. Some number of the damages results from natural wear of the means of transport elements, which is a natural phenomenon, while the remaining damages may be caused by an inefficient repair of the previous damage. This leads to so called secondary damages to the repaired element, occurred within a short time interval, which is a proof of inappropriate organization of the repairs, poor training level of the repairing teams, limits related to pre and after repair diagnosis, etc. Based on the analysis of the investigation results it has been found that the reason for the secondary damages is, in general, improper quality of the repairs of the primary damages to the subsystem elements.The primary damages are independent on one another and they occur randomly (they are not connected with one another by the cause and effect links). The secondary damages are dependent, because their occurrence depends on prior occurrence of the primary damage and the effect of its improper repair or improper repair of the next secondary damage.
Czynniki eksploatacyjne i procesy destrukcyjne elementów obiektów technicznych powodują niekorzystne zmiany wartości istotnych cech funkcjonalnych, powodujących uszkodzenia. Uszkodzenie obiektu technicznego zdefiniowano jako przekroczenie dopuszczalnych wartości granicznych przez istotne cechy opisujące jego elementy. Na podstawie analizy literatury przedmiotu oraz wyników badań własnych stwierdzono, że uszkodzenia środków transportu, użytkowanych w systemach transportowych, są wynikiem oddziaływania różnorodnych czynników wymuszających. Pewna liczba uszkodzeń wynika z naturalnego zużywania się elementów maszyn, natomiast inne uszkodzenia mogą być spowodowane nieskuteczną naprawą poprzednio powstałego uszkodzenia. Skutkiem tego powstają tzw. uszkodzenia wtórne, w krótkim przedziale czasu. Są one wynikiem niewłaściwej organizacji napraw, słabego wyszkolenia pracowników brygad naprawczych, ograniczeń związanych z diagnozowaniem przednaprawczym i ponaprawczym itd. Na podstawie analizy wyników badań stwierdzono, że przyczyną powstawania uszkodzeń wtórnych jest, z reguły, niewłaściwa jakość napraw pierwotnych uszkodzeń elementów podsystemów.Uszkodzenia pierwotne są niezależne od siebie i występują w sposób losowy (nie są ze sobą związane więzią przyczynowo-skutkową). Uszkodzenia wtórne są zależne, ponieważ ich wystąpienie jest uwarunkowane wcześniejszym wystąpieniem uszkodzenia pierwotnego i skutkiem niewłaściwej jego naprawy lub niewłaściwej naprawy następnego uszkodzenia wtórnego.
Źródło:: Journal of KONES; 2007, 14, 4; 545-554
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Mining equipment diagnostics in a mineshaft dewatering system – case study
Diagnostyka urządzeń górniczych w systemie odwodnienia szybu kopalni - studium przypadku
Autorzy:: Rogowski, Rafał
Werbińska-Wojciechowska, Sylwia
Powiązania:: https://bibliotekanauki.pl/articles/38938384.pdf
Data publikacji:: 2023
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: maintenance
mining industry
pump maintenance
diagnostics
mine shaft
dewatering system
utrzymanie ruchu
przemysł górniczy
utrzymanie pomp
diagnostyka
system odwodnienia
szyb kopalni
Opis:: Maintenance issues in mines are particularly important due to the type and complexity of equipment in operation or working in hostile (even extreme) conditions. In this context, the need to ensure continuous/regular maintenance of machinery, identify potential hazards and ensure operational safety seems to be a challenge. Moreover, selecting an appropriate maintenance method is crucial for a mine, both economically and in technical/organizational terms. This study aims to present the preliminary results of diagnostic tests for pumps performing operational tasks in a mine shaft dewatering system. In addition, this study focused on a detailed discussion of the basic elements of the mine shaft dewatering system and the technical objects studied. A preliminary operational test plan for the investigated pumps operating in the mine shaft dewatering system is also presented. This enabled a discussion of the results obtained from the tests of the first quarter of 2023. The tests used three basic diagnostic methods: vibration analysis, thermal imaging and acoustic testing. Potential directions for further research in the analyzed area were also indicated.
Problematyka utrzymania ruchu w kopalniach jest szczególnie istotna ze względu na typ i złożoność eksploatowanych urządzeń czy pracę w nieprzyjaznych (wręcz ekstremalnych) warunkach operacyjnych. Wyzwaniem w tym kontekście jest konieczność zapewnienia ciągłych/regularnych napraw maszyn, identyfikacji potencjalnych zagrożeń oraz zapewnienia bezpieczeństwa pracy. W tym kontekście, dobór odpowiedniej metody utrzymania ruchu ma kluczowe znaczenie dla kopalni, zarówno w kontekście ekonomicznym jak i techniczno-organizacyjnym. Celem pracy jest więc przedstawienie wstępnych wyników badań diagnostycznych przeprowadzonych dla pomp realizujących zadania operacyjne w systemie odwodnienia szybu kopalni. W ramach realizacji celu pracy skupiono się na szczegółowym omówieniu podstawowych elementów systemu odwodnienia szybu kopalni oraz badanych obiektów technicznych. Przedstawiono również wstępny plan badań eksploatacyjnych dla badanych pomp, funkcjonujących w systemie odwodnienia szybu kopalni. Pozwoliło to na omówienie uzyskanych wyników badań, przeprowadzonych w pierwszym kwartale 2023 roku. Badania zostały opracowane z wykorzystaniem trzech podstawowych metod diagnostycznych: analizy drgań, termowizji oraz badań akustycznych. Wskazano również potencjalne kierunki dalszych prac badawczych w analizowanym obszarze.
Źródło:: Journal of KONBiN; 2023, 53, 3; 69-86
1895-8281
2083-4608
Pojawia się w:: Journal of KONBiN
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Markovs model of means of transport operation and maintenance in a city transport system
Autorzy:: Woropay, M.
Migawa, K.
Wdzięczny, A.
Powiązania:: https://bibliotekanauki.pl/articles/245783.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: city transport system
operation and maintenance process
Markov's model
Opis:: The paper deals with an analysis and mathematical model of means of transport operation and maintenance. The considerations are based on a selected real transport means system - city bus transport system in a chosen agglomeration. The model has been built on the basis of a real city transport system involving realization of the process of operation and maintenance of means of transport. For this purpose, the process significant states and possible transitions between theses states have been determined. On this basis, an event model of means of transport operational use process was built, and next its mathematical model was made, with the assumption of its being the homogenous Markov 's model. Means of transport values of boundary probabilities for their being in the process particular states, were determined for data concerning their operational use. This serves as the basis for an analysis of the studied process of operational use. The presented Markov's model of the means of transport operational use process is the effect of accomplishmen of the first stage of the resultant model (semi-Markov's model) of operational use. The resultant model will be a part of a wide scale, decision model for creation and assessment of the transport system being ready for operation.
Źródło:: Journal of KONES; 2009, 16, 3; 511-516
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Simulation model of the means of transport maintenance process
Autorzy:: Landowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/247753.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: modelling
operation and maintenance process
transport system
urban public transport
computer simulation
Opis:: The real operation and maintenance processes of technical objects are characterised by so called secondary action, it means that the values of the features describing the process states and the analysed operation and maintenance states of technical objects as well as the after-effect ofthose states depend not only on their present state, but very often on the state or sequence of the previous states, too. In spite of the fact that the mathematical models of the real processes are intrinsically a significant simplification of the actual state, it however seems that omission of a secondary action in a certain class of operation and maintenance processes is an excessive simplification and the results obtained from investigations of models of that type may be affected by a significant error. The paper presents a model of operation and maintenance process of means of transport characterised by a secondary action as well as an example of computer simulation of performance of a stochastic process describing the features of the operation and maintenance process under analysis. The elaborated model of operation and maintenance process of technical objects takes into account the specificity of the systems of the urban bus transport. The computer simulation of the maintenance process enables, among other things, to estimate the values of the chosen indicators characterising the investigated process. On the basis of the analysis of the statistical data, obtained from the operation and maintenance investigations, the values of the essential input parameters of the model were estimated. The considerations presented in the paper include an assumption that it is possible to distinguish n disjoint subsets ofhomogenous objects, from the point of view of the investigation purpose, in the set of the technical objects being operated and maintained in the system under analysis. The investigation object is a system of operation and maintenance of means of transport.
Źródło:: Journal of KONES; 2010, 17, 4; 271-276
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: Semi-Markov model of quality state changes of a selected transport system
Autorzy:: Landowski, B.
Muślewski, Ł.
Knopik, L.
Bojar, P.
Powiązania:: https://bibliotekanauki.pl/articles/241811.pdf
Data publikacji:: 2017
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
efficiency
operation process
maintenance process
semi-Markov process
simulation tests
Opis:: The study deals with the problems connected with evaluation and analysis of transport systems operational quality. The research object is a real, sociotechnical system (of the type H-M-E) whose functional quality is affected by: operators, equipment and technical state of he operated vehicles and the environmental impact. A scheme of an assessment model was built on the basis of a developed concept of a system operational quality and a random process was defined to be used for the analysis. The assessment process involves investigating the variability degree of properties included in the resultant model in a given time and determining whether and to what degree the obtained values meet the requirements of the system appropriate operational quality. On the basis of the above assumptions and in result of experimental tests, four qualitative states of a transport system functioning, which represent intervals of values of the obtained grades in given time moments, were distinguished. The study presents a model of system operation qualitative state changes developed with the use of Markov chain inserted into a certain semi-Markov process. A graph and a matrix for probability of transition between the states were created and boundary distributions of the process were determined on the basis of experimentally obtained data. A system of equations was determined for the distinguished Markov chain, on the basis of which a mathematical model for assessment and control of operational quality of selected types of transport systems will be built.
Źródło:: Journal of KONES; 2017, 24, 4; 141-148
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: Applying the Markov decision processes to model changes to the maintenance states of an object
Autorzy:: Landowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/244035.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Markov decision process
modelling
operation and maintenance process
transport system
urban public transport
Opis:: Operation and maintenance of technical objects is related to occurrence of various events, the effects of which affect the operation and maintenance process course, and particularly the courses of their use and service processes. Occurrence of those events may be of both determined and random nature. Assessing, analysing and forecasting the operation and maintenance process course, in complex technical systems, are connected with the problems of modelling the operation and maintenance processes of technical objects. Those processes are random ones which depend on one another. The paper presents an example of the Markov decision process to model changes of the analysed operation and maintenance states of technical objects. The investigation object is a real operation and maintenance system of urban transport buses in a middle-sized agglomeration (about 400 k residents). Supporting a decision maker, in the process of making decisions concerning performance of the operation and maintenance process of the means of transport, may be carried out by analysing the results of the investigations of the operation and maintenance process model. The investigations of that type are to determine values of the selected measures of technical and economic efficiency of the process being carried out for the estimated values of the model parameters. The values of the model parameters were estimated on the basis of the analysis of the results of the investigations performed in the analysed system of urban bus transport. A change to the values of the model parameters may reflect a change of influence of internal and external factors on behaviour of the system and the operation and maintenance process of the means of transport being carried out in it. Mathematical models of the operation and maintenance processes are intrinsically simplified, therefore practical conclusions resulting from investigating those models should be formulated carefully.
Źródło:: Journal of KONES; 2010, 17, 3; 263-270
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: Analysis of operation efficiency of selected transport systems
Autorzy:: Muślewski, Ł.
Lewalski, M.
Aleksandrowicz, P.
Landowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/245072.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
efficiency
operation process
maintenance process
semi-Markov process
simulation tests
Opis:: This study deals with the problems connected with evaluation of technical systems efficiency of particular transport systems. The main goal of such a system operation is its effective functioning, through rational control of its particular activities and subsequent processes. A literature analysis of the definition of the efficiency term has been made. A real transport system has been accepted to be the research object. The system belongs to the group of sociotechnical systems in which evaluation of its operation efficiency depends on performance of operators, transport means and the impact of environmental factors. Criteria and methods of operation efficiency evaluation have been determined in this study as well as assessment indexes for transport systems. It has been shown that evaluation of a repair efficiency has a large influence on the efficiency of the whole system operation, especially the influence of secondary failure repairs, on the values of particular efficiency indexes. A semi-markov model of operation and maintenance of transport means used in the research object has been developed. This model provides the basis for evaluation of the influence of the processes involved in preparing transport means for service on the system operation efficiency. Moreover, the research also describes how to verify the developed model and present its simulation tests. The study is summarized with conclusions formulated based on the evaluation of the influence of the operation and maintenance processes on the investigated transport system operation efficiency.
Źródło:: Journal of KONES; 2016, 23, 3; 351-358
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "Maintenance System" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język