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Modification of Company Information System
Pakostová, Petra ; Záděra, David (referee) ; Koch, Miloš (advisor)
The content of this thesis is the analysis of a proposal to improve the company's information system that manufactures and sells diagnostic equipment. The work will include the creation of a new corporate website and electronic shop, without which nowadays is no longer a manufacturing company can do. The practical part will focus on the selection of open-source systems that will be used when creating the website and in creating e-shop. Of the various options will be selected the most suitable for subsequent comparison and implementation.
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Predictive system maintenance machines in engineering practice
Rázgová, Benedikta ; Řezníčková, Hana (referee) ; Hammer, Miloš (advisor)
This bachelor thesis deals with the predictive maintenance of machines in engineering practice. The first part of the thesis deals with problems theoretically, there is described generally maintenance and methods of technical diagnostics of machine tools. The practical part focused on the application of one selected method, vibrodiagnostics. Part of the work is the vibrodiagnosis evaluation of the milling center, the design of the predictive maintenance system and other recommendations for SMC Industrial Automation CZ s.r.o. Vyškov.
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Maintenance and diagnostics of machine tools focusing on vibrodiagnostics, electrodiagnostics and tribodiagnostics
Houška, Jan ; Řezníčková, Hana (referee) ; Hammer, Miloš (advisor)
Master‘s thesis deals with maintenance and related technical diagnostics of machine tools. Diagnostics methods on which is the thesis focused are vibrodiagnostics, tribodiagnostics and electrodiagnostics. Work includes design of diagnostic system and measurement of vibration and electrical parameters of the machining center. Based on given results from data evaluation, further steps in predictive maintenance and usage of technical diagnostics for machine tools are recommended. Within tribotechnical diagnostics, the thesis is based on evaluation of long-term monitoring of process liquid status, which was used in several machining machines. A procedure for the measurement of selected parameters is proposed and periodical liquid status checks are established.
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Noise control of needle bearings
Štetinová, Iveta ; Krejčí, Jakub (referee) ; Šedivá, Soňa (advisor)
The bachelor thesis deals with the noise of needle bearings. By analysing the noise of the bearings, it is possible to find out the technical condition of the bearing and reveal the types of bearing damage. The beginning of the work is devoted to the theory of bearing noise. Vibration diagnosis methods are described. In the practical part, a manual noise meter is tested, and the investigated values are evaluated by a system for measuring the noise of bearings. The primary objective of this thesis is to find out how the noise of the bearings could be controlled more effectively.
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Design of a test stand for vibrodiagnostics education
Doležal, David ; Huzlík, Rostislav (referee) ; Zuth, Daniel (advisor)
The master's thesis on the topic "Design of a Testing Model for Vibrodiagnostics Education" deals with the construction issues of the device. The introductory section provides a systematic analysis, which serves as the basis for the subsequent work. The literature review section discusses Technical Diagnostics with a focus on its subfield, Vibrodiagnostics. It also describes various types of sensors used for vibration measurements. Subsequently, typical faults of rotors and their configuration are presented. The thesis then focuses on the design of the testing device. The design emphasizes simplicity, ease of manufacturing, and minimizing production costs while maintaining functionality and reliability. After the suitable design was proposed, the testing device was manufactured and its functionality was tested in a school laboratory. Several measurements were conducted on different types of faults, such as static unbalance and moment unbalance. The measurements also considered misalignment due to the lack of device calibration. The final part of the thesis evaluates the testing device and provides recommendations for possible improvements. The outcome of the work is the creation of a functional testing model for diagnostic education, which has been tested and is operational.
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Dynamics of Machines and Mechanical Systems with Interactions, DYMAMESI 2023
Zolotarev, Igor ; Pešek, Luděk ; Kozień, M. S.
The aim of the DYMAMESI is to facilitate the exchange of up to date information and knowledge among specialists in structural and multibody dynamics, in coupled interacting systems as aero-elasticity, hydro-elasticity, biomechanics, systems with feedbacks and mechatronics. The colloquium DYMAMESI 2021 is cofunded by the Strategy AV21 initiative of the Czech Academy of Sciences of the Czech Republic, and in 2021 will be hosted by Cracow University of Technology, Institute of Applied Mechanics, Section of Dynamics of Systems.
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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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Bearing diagnosis of electrical motors
Kratochvíl, Lumír ; Janda, Marcel (referee) ; Vítek, Ondřej (advisor)
This work breaks down the individual phenomena and findings that have as a common denominator the emergence of irreversible processes leading to damage to bearings in electrical machinery and equipment. The introduction describes the basic description and division of bearings with the recommended methods of their basic operation. The following chapters then deal with the individual sources of damage, diagnostics of individual damages, or examine in more detail the accompanying phenomena of bearing damage. In the first practical part of the work, damaged bearings are physically analyzed and their diagnostics is performed on an electron microscope. The second part of the work deals with vibrodiagnostics and the use of appropriate methods to determine the condition of the rolling bearing and then the location of the source of vibration at error frequencies.
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Vibrodiagnostics of electrical machines
Boháček, Daniel ; Vítek, Ondřej (referee) ; Janda, Marcel (advisor)
This thesis deals with methods of vibration analysis in electric rotating machines. From the beginning, it is necessary to explain the basic concepts and introduce the issue of vibration. Next time, the work is focused on sources of vibration in electrical machines. Defects on electric rotating machines causing vibrations are described. Sensing is performed using sensors of deflection, speed and acceleration. The measured signal needs to be adjusted and filters, approximations and sampling will cover this in the next chapter. The main objective is the methods of analysis, which include the best known in the field of frequency analysis (FFT) and the envelope method in the time domain. This includes other methods such as Kurtosis factor, Crest factor, etc. There is also a basic block diagram for measuring vibrations. This block diagram is programmed and has a graphical user interface. The last part is an evaluation of the measured data of the engines.
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