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System analysis of braking truck - trailer combination
Haring, Andrej ; Kubjatko,, Tibor (referee) ; Řehák,, Miloslav (referee) ; Semela, Marek (advisor)
The dissertation deals with the issue of braking of articulated vehicles, especially articulated vehicles consisting of a tractor and a semi-trailer. This configuration was chosen with regard to the number of accidents and their consequences, and often also does not suit the technical condition of the tractor and semi-trailer, which is closely related to the safety of operation of these combinations. In the case of road accidents, the consequences are often very serious, whether it is personal injury or material damage. Investigating these accidents is a relatively demanding process, requiring a high degree of expertise as well as the necessary technical equipment. In contrast to these requirements, the availability of sources from which the necessary information can be drawn is relatively low. The available resources are mostly in a foreign language and are usually solutions to partial problems, not systemically comprehensive literature. Therefore, it is possible to say a "constant demand" for the available professional literature dealing with issues related to the solution of traffic accidents not only of combinations of vehicles, but of commercial vehicles as a whole. From the point of view of the importance, or topicality of needs arising from expert practice, the dissertation is thematically focused on braking of combinations of vehicles. There are several key reasons to focus on articulated vehicles. First of all, this is due to the specific character of the vehicle itself, which consists of two communication-linked brake systems. Other reasons are that the information contained in the dissertation, whether it is descriptive information, assessment of the technical condition of the systems, or the measurement results themselves, can be partially or even fully used for stand-alone towing vehicles or trailers. However, not all problems related to this issue can be solved within the dissertation. Therefore, in the dissertation, significant influences are selected, the solution of which, given the frequency and severity, the author considers essential. From the title of the dissertation it follows that this is a system analysis of the braking of combinations of vehicles. The system concept of solving a problem situation and selected problems are a guarantee that really essential parameters are selected within the content possibilities and scope of the dissertation and the system approach to their solution allows a "general" application in solving similar problems. The aim of the dissertation is a system analysis of the influence of selected parameters on the overall braking effect and stability of commercial vehicle combinations, analysis of input parameters on the decision logic of electronic brake system control unit, where procedures but also conclusions can be applied in similar cases with similar input parameters and decision criteria. Another partial goal is to develop a framework methodology for determining the technical condition of individual components of brake systems of commercial vehicles, which will be possible to apply especially in trucks, where electronically controlled systems are installed. Here, too, a systemic concept is applied, which will enable a wider use of this methodology.
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Survey and Diagnostics of Reinforced Concrete Structure
Blaha, Jaroslav ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
The subject of this master’s thesis is the diagnostic survey of the industry cast-in-place hall. The thesis contains theoretical and practical part. The theoretical part is focused on available options of diagnostic methods and options of materials evaluation. The practical part contains material assessment of chosen elements of construction. This part of thesis is focused on localizing the position and the diameter of reinforcement in every single element. Next step is focused on the quality of the concrete, particularly compressive strength and modulus of elasticity. The modern machines, like Hilti PS 1000 and Profometer PM-630, are used to localize the position and diameter of reinforcement. The quality of concrete is determined by removed bore core. Evaluation of material characteristics of the structure is in the conclusion.
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Transmission Diagnostics
Zajac, Roman ; Janoušek, Michal (referee) ; Prokop, Aleš (advisor)
The main content of thesis is to describe the diagnostics of vibration and noise arising in the transmission device meant for cars. The document describes the different measuring instru-ments, namely the measured quantities and measuring device.
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Computer analysis of medical image data
Krajčír, Róbert ; Šmirg, Ondřej (referee) ; Uher, Václav (advisor)
This work deals with medical image analysis, using variety of statisic and numeric methods implemented in Eclipse and Rapidminer environments in Java programming language. Sets of images (slices), which are used here, are the results of magnetic resonance brain examination of several subejcts. Segments in this 3D image are analyzed and some local features are computed, based on which data sets for use in training algorythms are generated. The ability of successful identification of healthy or unhealthy tissues is then practically tested using available data.
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Highway bridge diagnostics
Křepelka, Jan ; Suza, Igor (referee) ; Cikrle, Petr (advisor)
This thesis deals with the inspection and construction-technical survey of the highway bridges D2-058..1 and D2-058..2. These structures ale located on the border with the Slovak Republic and were built in 1980. The thesis is focused on the substructure of this long overpass, because of its major failures caused by leaking water. Theoretical part contains information about construction-technical surveys of the bridges, bridges inspections and theory of ultrasound methods. That method has been used in the practical part for identification of the damage extent. Also, material property have been verified and overall condition of the substructure has been evaluated.
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Survey and Diagnostics of Building Construction
Grygar, Zdeněk ; Heřmánková, Věra (referee) ; Anton, Ondřej (advisor)
The main goal of this diploma thesis is diagnostics and vocational training in assessment of existing structure of the center of leisure time for children. The teoretical part is focused on vocational training in assessment of existing structures by ČSN ISO 13 822 - Bases for design of structures - Assessment of existing structures and assesment of brick structures. The designing strength of masonry and mortar is defined in the end of theoretical part. The practical part continues with real construction, where diagnostic methods based on technical survey are applied and in the end describes present state of real construction with plan for required steps to secure safety. As a result of this thesis is also a demonstration static report.
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Diagnostics of GNU/Linux-Based Systems
Hofbauer, Martin ; Doležal, Jan (referee) ; Smrž, Pavel (advisor)
This bachelor thesis focuses on the creation of the light-weighted program, which collects and saves information from GNU/Linux-based systems. Designed and developed solution can also inform about errors in the operating system and its unusual behavior. The program aims at maximum reliability, isolation of individual parts, and ease of use. The theoretical part describes problems of already existing solutions and focuses on the system monitoring context. The practical part then describes program architecture and its implementation. The program was successfully deployed in the company BringAuto, which collaborated with the creation of this thesis. It turned out that the program is able to record information from the operating system without its big load. In case of partial system failure, the program helped with finding its causes.
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Methodology of highly reliable systems design
Straka, Martin ; Gramatová, Elena (referee) ; Racek, Stanislav (referee) ; Kotásek, Zdeněk (advisor)
In the thesis, a methodology alternative to existing methods of digital systems design with increased dependability implemented into FPGA is presented, new features which can be used in the implementation and testing of these systems are demonstrated. The research is based on the use of FPGA partial dynamic reconfiguration for the design of fault tolerant systems. In these applications, the partial dynamic reconfiguration can be used as a mechanism to correct the fault and recover the system after the fault occurrence. First, the general principles of diagnostics, testing and digital systems dependability are presented including a brief description of FPGA components and their architectures. Next, a survey of currently used methods and techniques used for the design and implementation of fault tolerant systems into FPGA is described, especially the methods used for fault detection and localization, their correction, together with the principles of evaluating fault tolerant systems design quality. The most important part of the thesis is seen in the description of the design methodology, implementation and testing of fault tolerant systems implemented into FPGAs which uses SRAMs as the configuration memory. First, the methodology of developing and automated checker components design for digital systems and communication protocols is presented. Then, a reference architecture of a dependable system implemented into FPGA is demonstrated including several fault tolerant architectures based on the use of partial dynamic reconfiguration as the mechanism of fault correction and the recovery from it. The principles of controlling the reconfiguration process are described together with the description of the test platform which allows to test and verify the design of fault tolerant systems based on the methodology presented in the thesis. The experimental results and the contribution of the thesis are discussed in the conclusions.
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Technical survey of the family house
Odstrčil, Štěpán ; Láník, Jaromír (referee) ; Schmid, Pavel (advisor)
This bachelor’s thesis deals with diagnostics of one object divided to 4 residence units. Technical construction resarch had to be made due to owned wants knock down his residence unit and build a new family house instead o fit. Object is located on the street Žebětínek 17 in Brno-Medlánky. Resarch includes enumeration of all damages before demoliton o rafter that, diagnostics of object wich is being demolished and consequences of demolition to buildings nearby.
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