National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Design of a pipeline chain conveyor
Machala, Petr ; Malach, František (referee) ; Malášek, Jiří (advisor)
This master thesis deals with the construction design of two different pipeline drag chain conveyors for transport of wheat and sewage sludge. The first part describes the operation principle and the main parts of this conveyor. The examples of designs from several manufacturers follow. Next part is devoted to determining the resistance to movement in individual sections of the transport route. Thesis continues with design proposals of both variants of conveyors, including suitable technological and strength calculations. The outputs of this work are also assembly drawings of these two conveyors.
Alternatives of lifting platform
Machala, Petr ; Pokorný, Přemysl (referee) ; Malášek, Jiří (advisor)
This bachelor thesis deals with the construction design of a platform lift with a mechanical drive, load capacity up to 3 000 kg and maximum height in folded state 250mm. In this work a suitable variant of stroke mechanism and analysis of the use of selected options of mechanical drives is selected. In the next part the appropriate calculation of the mechanisms regarding the chosen dimensions and loads is elaborated. In the end the technical possibilities of both variants are evaluated and compared. The output of this work is the assembly drawings of the platform lifts for both types of drive.
Methods for localization of pulsed broadband signal source
Machala, Petr ; Hadinec, Michal (referee) ; Drexler, Petr (advisor)
The topic of this barchelor’s thesis is the analysis of problems regarding localization of partial discharges (PD) and related PD recording, processing and interpretation in time and frequency domain. In majority of cases the occurrence of partial discharges refers to a certain defect in the measured device, therefore in practice (eg large equipment such as oil transformers) it appears to be very useful and economical to determine the exact position, where PDs are formed. To address these complex issues, it is necessary to design the entire measuring chain from PD detection to measured data processing and localization itself. In terms of data processing and PD localization many different localization and detection methods can be applied, some of them are presented in this documentation. These methods are gradually studied, implemented and afterwards tested using the input data of the experiment.
Optical Recognition and Analysis for Home Metering
Machala, Petr ; Fedra, Zbyněk (referee) ; Povalač, Aleš (advisor)
The topic of this master’s thesis is a study and solution of problems regarding an optical recognition and home metering analysis for the following recording and statistical processing. For this required application a STMicroelectronics 32F429IDISCOVERY development board with ARM Cortex-M4 microcontroller and OmniVision OV7670 camera module was used, where a required firmware was implemented. This thesis therefore generally represents a complex solution from acquisition of images by used camera module to final analysis and data processing and building a functional prototype of the proposed sensor system.

See also: similar author names
4 MACHALA, Pavel
1 Machala, Patrik
4 Machala, Pavel
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