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Control of network operation generator from OPNET Modeler environment
Bartl, Milan ; Hošek, Jiří (referee) ; Molnár, Karol (advisor)
In this work an interface between network simulator OPNET Modeler and network operations generator IxChariot is described. The goal is to control the generator by data from an OPNET modeler simulation. More accurately the generator is supposed to produce a data flow with desired settings of DSCP field, which is used to support quality of service mechanism. The goal can be achieved by two possible approaches: using IxChariot TCL API or IxChariot C API. Both of these approaches are described and conclusions are made at the end.
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Co-Simulation of Microprocessor and Peripheral Devices
Frühbauer, Jan ; Husár, Adam (referee) ; Hruška, Tomáš (advisor)
The aim of this thesis is to analyze various kinds of co-simulation techniques and to design integration these techniques into Lissom simulation platform. The first section of this thesis shows capabilities of external interfaces of simulation platforms for HDL languages VHDL, Verilog and SystemVerilog and of tool Matlab. The second section deals with design of synchronization mechanism among Lissom simulation platform and others simulation platforms using mentioned external interfaces. In the last part the testing of implemented solutions and evaluation of results is described.
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OpenModelica and Matlab-Simulink co-simulation
Szymanik, Adam ; Kozubík, Michal (referee) ; Václavek, Pavel (advisor)
This thesis solves co-simulation between OpenModelica and Matlab-Simulink. In the first part Modelica language, OpenModelica software and FMI standard are described. In the next part is proposal of solution through custom blocks and realization of those blocks. In last chapter are three examples to verify functionality of my solution.
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Development of ABS Control Algorithm for Heavy Commercial Vehicle
Slepánek, David ; Porteš, Petr (referee) ; Fojtášek, Jan (advisor)
This thesis is concerned with ABS algorithm project for commercial vehicles. In the first part the reader is introduced to the history and first usage of the anti-blocking system, its principles and main functions. There are also driving algorithms and functionality system control. The second part is dedicated to the dynamic model, programs and ADAMS Car and MATLAB Simulink interfaces. It also contains the description of the algorithm, its parameters and basic functionality assay. Simulation, program interlink, testing and tuning are also described. The concluding part deals with results and their assessment.
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New Methods of Quality of Service Assurance in Data Networks
Hošek, Jiří ; Vozňak,, Miroslav (referee) ; Bešťák,, Robert (referee) ; Molnár, Karol (advisor)
The doctoral thesis is focused on a research in the area of the quality-of-service support technologies in data networks. The current modern communication networks cannot operate correctly without an effective tool allowing differentiated treatment for various network traffic classes. Looking at the current trends in this area it turns out that the technology of Differentiated services is currently the most widely used mechanism for QoS assurance in data networks. The major part of this doctoral thesis concerns the design of a novel QoS system which offers a solution for one of the main problems of DiffServ technology. This disadvantage lies in the missing cooperation between the end station and edge node of the DiffServ domain. To overcome this limitation the system proposed introduces an improvement which enables the user application to actively participate in the resource reservation process by direct configuration of the DSCP value in the IP header of its own packets. This functionality is based on the identification of DiffServ configuration parameters available in the edge router. To retrieve the information required from network component the well-known SNMP protocol has been chosen, which has direct access to the components’s configuration stored in the MIB database. On the basis of this theoretical proposal several simulation scenarios have been created and analysed. The results show that the system designed presents an efficient solution for the mentioned problem of DiffServ. They also give good assumptions for the successful implementation of this system into a real environment.
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OpenModelica and Matlab-Simulink co-simulation
Szymanik, Adam ; Kozubík, Michal (referee) ; Václavek, Pavel (advisor)
This thesis solves co-simulation between OpenModelica and Matlab-Simulink. In the first part Modelica language, OpenModelica software and FMI standard are described. In the next part is proposal of solution through custom blocks and realization of those blocks. In last chapter are three examples to verify functionality of my solution.
|
|
|
Co-Simulation of Microprocessor and Peripheral Devices
Frühbauer, Jan ; Husár, Adam (referee) ; Hruška, Tomáš (advisor)
The aim of this thesis is to analyze various kinds of co-simulation techniques and to design integration these techniques into Lissom simulation platform. The first section of this thesis shows capabilities of external interfaces of simulation platforms for HDL languages VHDL, Verilog and SystemVerilog and of tool Matlab. The second section deals with design of synchronization mechanism among Lissom simulation platform and others simulation platforms using mentioned external interfaces. In the last part the testing of implemented solutions and evaluation of results is described.
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|
|
Development of ABS Control Algorithm for Heavy Commercial Vehicle
Slepánek, David ; Porteš, Petr (referee) ; Fojtášek, Jan (advisor)
This thesis is concerned with ABS algorithm project for commercial vehicles. In the first part the reader is introduced to the history and first usage of the anti-blocking system, its principles and main functions. There are also driving algorithms and functionality system control. The second part is dedicated to the dynamic model, programs and ADAMS Car and MATLAB Simulink interfaces. It also contains the description of the algorithm, its parameters and basic functionality assay. Simulation, program interlink, testing and tuning are also described. The concluding part deals with results and their assessment.
|
|
|
New Methods of Quality of Service Assurance in Data Networks
Hošek, Jiří ; Vozňak,, Miroslav (referee) ; Bešťák,, Robert (referee) ; Molnár, Karol (advisor)
The doctoral thesis is focused on a research in the area of the quality-of-service support technologies in data networks. The current modern communication networks cannot operate correctly without an effective tool allowing differentiated treatment for various network traffic classes. Looking at the current trends in this area it turns out that the technology of Differentiated services is currently the most widely used mechanism for QoS assurance in data networks. The major part of this doctoral thesis concerns the design of a novel QoS system which offers a solution for one of the main problems of DiffServ technology. This disadvantage lies in the missing cooperation between the end station and edge node of the DiffServ domain. To overcome this limitation the system proposed introduces an improvement which enables the user application to actively participate in the resource reservation process by direct configuration of the DSCP value in the IP header of its own packets. This functionality is based on the identification of DiffServ configuration parameters available in the edge router. To retrieve the information required from network component the well-known SNMP protocol has been chosen, which has direct access to the components’s configuration stored in the MIB database. On the basis of this theoretical proposal several simulation scenarios have been created and analysed. The results show that the system designed presents an efficient solution for the mentioned problem of DiffServ. They also give good assumptions for the successful implementation of this system into a real environment.
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