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Experimental methodology of measuring
Lojková, Lea ; Hejtmánek, Petr (referee) ; Havlíková, Marie (advisor)
This work is focused on the development of a thorough study about ISO standards focused on the vehicle dynamics, standardized tests of vehicle dynamics and measured variables that allow us to describe and model the behaviour of riding vehicles properly. In the Appendix A of the thesis, there is a list of all known ISO standards dealing with given topic. The standard ISO 15037-1 Road vehicles – Vehicle dynamics test methods, Part 1: General conditions for passenger cars is described in detail, including the forms for test reports and the Appendix C and D. In the thesis, there is also described a model of minimal needed measuring system that is still in good accordance with the standard ISO 15037-1 and fulfills all its requirements. Detailed description of all used sensors that are used to measure required variables is given, as well as a short description of all sensors that are used for measurement of other variables. After that, measurement abilities of the instrumentation of measuring system RIO used in ÚADI FSI Brno is compared and confronted with requirements given by the standard, to see, if all given criteria are properly fulfilled. Because of the fact that standard-given criteria are quite mild, while the equipment of the faculty is high-level technology, mostly made directly for measuring of dynamic parameters of the vehicles, including racing vehicles, the system is in full accordance with the standard ISO 15037-1.
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Thermodynamic Analysis of Internal Combustion Engine
Čajka, Lukáš ; Drápal, Lubomír (referee) ; Svída, David (advisor)
This thesis deals with analysis of the thermodynamics of the internal combustion engine. A survey on individual types of sensors used to measure pressure in combustion chamber is stated in the introductory part of the thesis. Another section deals with design of measuring chain. The main subject matter deals with compilation of the calculation program pertaining to the analysis of indicator diagram. Evaluation the results and procedures are included in the conclusion.
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Design of Device for Vehicle Center of Gravity Height Measurement
Rektořík, Jiří ; Vančura, Jan (referee) ; Hejtmánek, Petr (advisor)
The objective of this diploma thesis is the design of a device that measures the vehicle’s centre of gravity height position. The first part defines individual methods of measurement using various measuring equipment. The next part deals with the definition of requirements for the device and the definition of the design. A stress-strain analysis was executed for selected components. This diploma thesis describes the preparation process of the vehicle and the device for the measurement. The next part is dedicated to the design of the measuring chain and to the evaluation of the results. The thesis concludes with a theoretic analysis of the measurement inaccuracy.
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Measurement of Stirling engine
Kovář, Michal ; Kloss, Ondřej (referee) ; Kaplan, Zdeněk (advisor)
This thesis describes the design chain to indicate the measuring cylinder Stirling engine. It describes the practical problems of measurement methodology and highlights the possible pitfalls of the measuring chain. For measuring the use of pre-existing model of gamma Stirling engine modification. It was carried out systematic measurement and evaluation of measured data. As a mathematical model for comparison with the measured data was used ideal cycle and Schmidt theory.
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Monitoring of environmental parameters in buldings
Slovák, Martin ; Číp, Ondřej (referee) ; Václavík, Vlastimil (advisor)
Aim of work is project system for monitoring environmental parameters in buildings. Theoretical part of work deals with parameters, which will be monitoring, why we measure those parameters in buildings. And what devices can we choose to do it. Measurement channel describes from change of physical value to electric value, after that there is a correction to processing by microcontroller. And those values are sending by microcontroller to other processing. The best solution to distant transmission is probably ZigBee technology. Practice part of work is in keeping with theoretical part. There are some practical sensor connections, where is difference in output of sensor. It’s necessary to project connections of sensor and do their software services. There is a simple tool to programming microcontrollers, which is called CodeWarrior. In last part is solution of algorithm, which make net by ZigBee technology.
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Development of method for lubrication regime evaluation in rolling bearing
Valenta, Jakub ; Čermák, Jan (referee) ; Šperka, Petr (advisor)
The aim of this master’s thesis is to develop measuring methods for evaluation of the lubrication regime in a rolling bearing. The first part of thesis maps several measuring methods according to which the lubrication mode can be evaluated. Based on the assessment of this part, electrical monitoring methods were selected. For application of these methods was constructed testing device with rolling bearing. Specific measuring chains based on selected methods were designed and verified by using initial tests on a ball-on-disk tribometer. According to the results of these initial measurements was selected and applied suitable measuring chain to the selected test device. In the end, there was a successful measuring the lubrication parameter on the rolling bearing. Additionally, other tests dealing with the influence of temperature and type of oil on the measurement itself were performed.
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Motor pump control unit
Novák, Vlastimil ; Novotný, Pavel (referee) ; Píštěk, Václav (advisor)
Vlastimil Novak Motor pump control unit DW, IAE, 2008, 48 pp. 54 fig. The terget of diploma work is measure od progression of vibration on motor pump control unit of electro-hydraulic servo unit placed on a vehicle. At first, a proposal of testing of vehicle for given characteristics have been created and placement of sensors and compare measured data of load of control unit in different vehicle ride modes.
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Measurement of process variable – pressure
Kouba, Martin ; Hammer, Miloš (referee) ; Konečný, Antonín (advisor)
The measurement of the process quantity of pressure is an important element and condition of the functionality of many industrial applications, especially in the environment of commodity production, transport, pharmacy, food industry and many others. In practise, there are many pressure measurement methods that are applied in different environments and conditions. The choice of measuring equipment depends on many factors, such as the measurement range, environment, sensitivity, response speed, or environmental resistance. The correct procedure in their calibration and determination of measurement uncertainties increase the credibility of the measurement results. The means of data transfer in a modern concept make it possible to better secure and speed up the transfer of information in the measurement chain. All of the above-mentioned facts, in sequence and in relation to each other, fundamentally affect the resulting reliability and effectiveness of the measurement of the process quantity. The study of the measurement of the process quantity of pressure from a comprehensive point of view will allow us to analyse the individual elements of the measuring chain and their interconnection. The content of the thesis provides a basic orientation to the issue of pressure measurement and captures the main trends in individual areas.
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Design of actuated measuring setup for vacuum chamber of electron microscope
Imramovský, Jakub ; Náhlík, Luboš (referee) ; Krejsa, Jiří (advisor)
Master's thesis deals with design of an apparatus for straining of CT testing object for research of initiation and propagation of cracks in tested sample, which will be eventually placed in electron microscope vacuum chamber, which belongs to the Institute of Physics of Materials of Czech Academy of Sciences. Principles of strain measurement are described and possible electric motors for actuation of straining apparatus are described. Mapping and creation of a 3D model of vacuum chamber are performed for adjustment of straining device so that the straining process can be actuated. Creation of measuring chain is described as well as creation of graphical user interface. Results and possible further development are discussed in the end of the thesis. Attachment includes 3D model of electron microscope vacuum chamber, code for driving the development board and code for creation of graphical user interface.
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Development of method for lubrication regime evaluation in rolling bearing
Valenta, Jakub ; Čermák, Jan (referee) ; Šperka, Petr (advisor)
The aim of this master’s thesis is to develop measuring methods for evaluation of the lubrication regime in a rolling bearing. The first part of thesis maps several measuring methods according to which the lubrication mode can be evaluated. Based on the assessment of this part, electrical monitoring methods were selected. For application of these methods was constructed testing device with rolling bearing. Specific measuring chains based on selected methods were designed and verified by using initial tests on a ball-on-disk tribometer. According to the results of these initial measurements was selected and applied suitable measuring chain to the selected test device. In the end, there was a successful measuring the lubrication parameter on the rolling bearing. Additionally, other tests dealing with the influence of temperature and type of oil on the measurement itself were performed.
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