Wyniki wyszukiwania - BazTech

1

Application of complex game-tree structures for the Hsu graph in the analysis of automatic transmission gearboxes

Deptula A., Partyka M. A.

Journal of Machine Engineering

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2018

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Vol. 18, No. 4

96--113

EN

In the article was discussed the possibility of structures and information systems complex game trees for the analysis of automatic gearboxes. The purpose of modelling an automatic gearbox with graphs can be versatile, namely: determining the transmission ratio of individual gears, analysing the speed and acceleration of individual rotating elements. In a further step, logic tree-decision methods can be used to analyse functional schemes of selected transmission gears. Instead, for graphs that are models of transmission, parametrically acting tree structures can be used. This allows for the generalization and extension of the algorithmic approach, furthermore in the future it will allow further analyses and syntheses, such as checking the isomorphism of the proposed solutions, determining the validity of construction and / or operating parameters of the analysed gears. The game tree structure describes a space of possible solutions in order to find optimum objective functions. There is the connection with other graphical structures which can be graphs in another sense, or even decision trees with node and/or branch coding.

2

Zintegrowany system wspomagania decyzji do diagnostyki akustycznej w badaniu stanu technicznego silnika spalinowego

Deptuła A., Osiński P.

Mechanik

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2017

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R. 90, nr 7

574--576

PL

Przedstawiono przykład zastosowania systemu zintegrowanego jako narzędzia systemu wspomagania decyzji w diagnostyce akustycznej stanu technicznego silnika spalinowego. Obiektem badawczym był silnik spalinowy o zapłonie samoczynnym jednostki napędowej firmy Fiat, z systemem common rail. Materiały są wynikiem badań w obszarze projektowania i eksploatacji silników spalinowych, prowadzonych w Katedrze Inżynierii Pojazdów oraz Laboratorium Napędów Hydraulicznych i Wibroakustyki Maszyn przy Politechnice Wrocławskiej. Opracowano autorską metodę identyfikacji rodzaju uszkodzeń silnika z zastosowaniem grafów rozgrywających parametrycznie. Do testowania i identyfikacji własności akustycznych stworzono zintegrowany system decyzyjny, uwzględniający indukcyjny system uczenia maszynowego.

EN

Presented are possible applications of acoustic diagnostics in inspecting the technical condition of an internal combustion engine with autoignition on the example of the Fiat drive unit with common rail system. As a result of measuring the sound pressure level for specific faults and comparing the noise generated by the motor running smoothly, the detailed maps of changes in the acoustic spectrum are possible to generate. These results may be helpful in the future diagnostics of internal combustion engines. The results of scientific work in the area of research, design and operation of internal combustion engines, conducted at the Department of Automotive Engineering, in cooperation with the Laboratory of Hydraulic Drives & Vibroacoustics of Machines at the Wroclaw University of Technology are included. It has developed an authoritative method of identifying the type of engine damage using game-tree structures. An integrated decision system for induction machine learning was developed to test and identify acoustic properties.

3

Analiza przekładni planetarnej zamodelowanej grafem konturowym z uwzględnieniem metody struktur rozgrywających parametrycznie

Deptuła A., Drewniak J., Partyka M. A.

Mechanik

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2017

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R. 90, nr 7

640--642

PL

Dotychczas teoria grafów była stosowana w modelowaniu przekładni do analizy dynamicznej, kinematycznej, syntezy, analizy struktury, optymalizacji ciągu przełożeń oraz automatycznego projektowania w oparciu o tzw. gramatyki grafowe. Metoda grafów konturowych polega na wyróżnianiu szeregu kolejnych sztywnych ogniw mechanizmów tworzących zamkniętą pętlę (tzw. kontur). Na dalszym etapie istnieje możliwość analizy otrzymanego grafu konturowego jako grafu skierowanego zależności. Przedstawiono idee wykorzystania metody struktur rozgrywających parametrycznie do opisu grafu konturowego przekładni planetarnej.

EN

Previous applications of the graph theory concerned the modeling of gears for dynamic analysis, kinematic analysis, synthesis, structural analysis, gearshift optimization and automatic design based on so-called graph grammars. Some tasks can be performed only by using methods resulting from a graph theory, e.g. enumeration of structural solutions. The contour plot method consists in distinguishing a series of consecutive rigid units of the mechanism, forming a closed loop (so-called contour). At a later stage, it is possible to analyze the obtained contour graph as a directed graph of dependence. The work presents an example of the use of game-tree structures for describing the contour graph of a planetary gear. As a result of the decomposition of the graph in the dependence on each of the vertices, game-tree structures are obtained, which allow calculate algorithmically.

4

Application of Dependence Graphs and Game Trees in Analysis of a Planetary Gear Modeled With a Contour Graph

Deptuła A., Drewniak J., Partyka M. A.

Machine Dynamics Research

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2017

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Vol. 41, No. 3

105--114

EN

Analysis and synthesis of mechanisms are basic engineering tasks. They can suffer from errors due to versatile reasons. The graph-based methods of analysis and synthesis of planetary gears can be alternative methods for accomplishing of the afore mentioned tasks, which additionally allow for checking of their correctness. Previous applications of the graph theory concerned the modelling of gears for dynamic analysis, kinematic analysis, synthesis, structural analysis, gearshift optimization and automatic design based on so-called graph grammars. Some tasks can be performed only by using methods resulting from a graph theory, e.g. enumeration of structural solutions. The contour plot method consists in distinguishing a series of consecutive rigid units of the mechanism, forming a closed loop (so-called contour). At a later stage, it is possible to analyze the obtained contour graph as a directed graph of dependence. The work presents an example of the use of game-tree structures for describing the contour graph of a planetary gear. In addition, the complexity factor for parametric graphs was taken into account.

5

Game-tree structures with the complex complexity level as a tool in knowledge engineering

Deptuła A.

Information Systems in Management

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2013

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Vol. 2, No. 2

100--112

EN

The paper concerns application of the dependence graphs and game- tree structures with the complex complexity level as a tool in knowledge engineering. Different graph solutions mean connections between input and output data as well as decision variables of the analyzed system. The graph distribution from any vertex in the first stage leads to a tree structure with cycles, and next to a general tree game structure. Game-tree structures from each node have different shape and properties. Algorithmic way to create graphical structures out of a mathematical model describes the optimization method of systematic exploration. Tree structure, with the lowest values of complexity level is the simplest structure.