Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "urban transport system" wg kryterium: Temat


Wyświetlanie 1-3 z 3
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
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
Tytuł:
Example of applying markov decision process o model vehicle maintenance process
Autorzy:
Landowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/243975.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport system
operation process
Markov decision process
urban transportation
state of object
Opis:
The subject of this paper are selected issues connected with modelling, prognosis and control of the process of operation and maintenance of a certain category of technical objects. The research object is a system of transport means operation. Assumptions for building a model of the operation process state changes of objects used in a complex system of operation and maintenance have been presented. The operation process model was built on the basis of an analysis of the space of states and events concerning technical objects, which are used in the analysed real transportation system. Source data necessary to make assumptions for the model development and its initial verification, has been obtained by means of the passive experiment method from a real system of transport means operation. An example of Markov decision process use for modelling and analysis of a public city transportation system operation process has been presented. Determination of values of indices characterizing the analysed process has been carried out basing on computer simulation of Markov decision process, being a mathematical model of technical objects operation process. A computing model has illustrated the entire study. Values of the model parameters have been estimated basing on the results of preliminary tests conducted in a real system of transport means operation. The model presented in this work has been built in such a way that it can be used for a wide category of problems connected with technical objects operation.
Źródło:
Journal of KONES; 2013, 20, 4; 209-218
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

    Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies