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Multiparametric generator diagnostics
Buchtová, Blanka ; Nahodil, Petr (referee) ; Hammer, Miloš (advisor)
The thesis is focused on multiparametric diagnostic of generators at the Dukovany nuclear power plant. One generator was chosen for the thesis and it was examined especially from the practical point of view. The thesis describes current state of the issue with focus on noise diagnostics, vibrodiagnostics and electrodiagnostics. The emphasis is on the system approach of the solution. In the practical part an experiment is designed, described and evaluated. Attention is paid to the conclusions of the performed vibrodiagnostics and noise diagnostics. Data sets are evaluated separately and the relationship between the two diagnostic methods is analyzed. Furthermore, the data set from electrodiagnostics is evaluated and dependencies of electrical diagnostic quantities on other quantities are described. Trends in electrical diagnostic quantities are also monitored. Conclusions and recommendations are formulated at the end of the thesis. It is stated that using multiparametric diagnostics to assess the status of generators in power plants is still in its beginning and that the conclusions of the submitted thesis will contribute to the developmnet in this area.
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Multiparametric diagnostics of high-speed machine
Bowyer, Matouš ; Harčarík, Matej (referee) ; Jankových, Róbert (advisor)
The goal of the thesis was applying multiparametric diagnostics to determine the state and wear of a high-speed milling machine. In the theoretical section, selected areas of multiparametric diagnostics have been described as well as a significant focus on vibrodiagnostics. The chosen methods for the practical section were incorporated into the group “metrological diagnostics”. Several different types of measurements have been performed on the designed test piece. The measurements were analyzed and lead to these specific results: a drawing of the test piece, a structured methodology for evaluating the test piece, recommendations for diagnostics of the specific machine, and proposals for the future development of the field of metrological diagnostics.
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Reengineering of the maintenance system of variable speed drives using multi-parameter diagnostics
Nahodil, Petr ; Helebrant, František (referee) ; Pačaiová, Hana (referee) ; Hammer, Miloš (advisor)
The work is focused on multiparametric diagnostics, which is an important part of machine and equipment maintenance today. It deals with the use of fields such as vibrodiagnostics, electrodiagnostics, thermodiagnostics, tribodiagnostics, assembly and optical measurements as well as other diagnostic methods in order to obtain a complete picture of the monitored devices. The work also discusses the modern procedure of using multiparametric diagnostics to identify the causes of problems and define appropriate measures in the framework of maintenance. The dissertation is based specifically on the implementation of multiparametric diagnostics in the operability of drives with variable speeds and justifies the necessary reengineering of the maintenance system for these devices. The given maintenance system will clearly require a change in the inspection activity primarily in terms of quality, but certainly also quantitative verification and validation of the measured data in situ, an adequate change in the documentation processed by the manufacturer, or by the supplier, conducted by the user, etc. The work itself is based on the basic idea that if I can measure and diagnose something, then I can declare that I know something about it.
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Multiparametric generator diagnostics
Buchtová, Blanka ; Nahodil, Petr (referee) ; Hammer, Miloš (advisor)
The thesis is focused on multiparametric diagnostic of generators at the Dukovany nuclear power plant. One generator was chosen for the thesis and it was examined especially from the practical point of view. The thesis describes current state of the issue with focus on noise diagnostics, vibrodiagnostics and electrodiagnostics. The emphasis is on the system approach of the solution. In the practical part an experiment is designed, described and evaluated. Attention is paid to the conclusions of the performed vibrodiagnostics and noise diagnostics. Data sets are evaluated separately and the relationship between the two diagnostic methods is analyzed. Furthermore, the data set from electrodiagnostics is evaluated and dependencies of electrical diagnostic quantities on other quantities are described. Trends in electrical diagnostic quantities are also monitored. Conclusions and recommendations are formulated at the end of the thesis. It is stated that using multiparametric diagnostics to assess the status of generators in power plants is still in its beginning and that the conclusions of the submitted thesis will contribute to the developmnet in this area.
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Multiparametric diagnostics of high-speed machine
Bowyer, Matouš ; Harčarík, Matej (referee) ; Jankových, Róbert (advisor)
The goal of the thesis was applying multiparametric diagnostics to determine the state and wear of a high-speed milling machine. In the theoretical section, selected areas of multiparametric diagnostics have been described as well as a significant focus on vibrodiagnostics. The chosen methods for the practical section were incorporated into the group “metrological diagnostics”. Several different types of measurements have been performed on the designed test piece. The measurements were analyzed and lead to these specific results: a drawing of the test piece, a structured methodology for evaluating the test piece, recommendations for diagnostics of the specific machine, and proposals for the future development of the field of metrological diagnostics.
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