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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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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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Use of technical analysis when trading on futures markets
Boháček, Daniel Martin ; Smrčka, Luboš (advisor) ; Zámečník, Petr (referee)
This bachelor's thesis deals with the topic of stock exchange transactions, deals with use and application of elements of technical analysis in trading on commodity (futures) markets. The reader of this thesis becomes gradually acquainted with stock markets, basic market principles and methods, by which it is today possible to successfully trade on commodity markets. The theoretical part simply takes the reader through some successive decisions like the selection of applied analysis, selection of the market, trading system and other aspects necessary for profitable trading. In the practical part of the thesis, I introduce a trading system by with it is possible to trade profitably while giving attention to all of it's rules. After a detailed description of all specific parts of the trading system, we come to an analysis MAE / MFE, which helps us to determine the position-exit strategy. In the chapter of backtest, we test the trading system on two futures markets, E-mini Nasdaq and E-mini Russell2000. At the end of the thesis, I try to use the trading system and trade with virtual money. I compare the results from backtest and papertrading, and i try to characterize the difference between these results.
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