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Hybrid magnetic bearing design
Šindelář, Petr ; Bárta, Jan (referee) ; Rúra, Dávid (advisor)
The thesis deals with the design of a hybrid magnetic bearing. This is an extension of the issue of common bearings in high-speed motors. The work is divided into three parts. A general theory of magnetic bearings is described in the first part. The second part deals with the mathematical description of the bearing. A proposal of specific hybrid magnetic bearing is described in the third part. The bearing for the motor was already designed. It is a 45000rpm motor with a power output of 12 kW. This thesis aims to create a design of hybrid magnetic bearing with magnets to create a permanent magnetic field and coils to regulate forces to stabilize the rotor and limit vibrations. The practical design includes mathematical calculation in Matlab and computer simulation based on the finite element method in ANSYS Maxwell.
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Problems of measurement and evaluation of earth resistance
Šindelář, Petr ; Janda, Marcel (referee) ; Veselka, František (advisor)
This work deals with the measurement of earth resistance, definition, substances causing earth conductivity, basic norms for carrying out grounding revisions and effect of earth resistance on securing and protection element. In the introduction there is theoretical analyzing of grounding issue and principles for the measurement of parameters, which are important for the protection of persons and animals in order not to touch exposed conductive part accidentally, protection of equipment against high fault current and dangerous surges while the correct function of the connected electrical equipment. In the next part there are described methods of earth resistance and soil resistivity measuring. The practical part of the work summarizes the results of practical measurements in individual places with different measuring device.
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Hybrid magnetic bearing design
Šindelář, Petr ; Bárta, Jan (referee) ; Rúra, Dávid (advisor)
The thesis deals with the design of a hybrid magnetic bearing. This is an extension of the issue of common bearings in high-speed motors. The work is divided into three parts. A general theory of magnetic bearings is described in the first part. The second part deals with the mathematical description of the bearing. A proposal of specific hybrid magnetic bearing is described in the third part. The bearing for the motor was already designed. It is a 45000rpm motor with a power output of 12 kW. This thesis aims to create a design of hybrid magnetic bearing with magnets to create a permanent magnetic field and coils to regulate forces to stabilize the rotor and limit vibrations. The practical design includes mathematical calculation in Matlab and computer simulation based on the finite element method in ANSYS Maxwell.
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Problems of measurement and evaluation of earth resistance
Šindelář, Petr ; Janda, Marcel (referee) ; Veselka, František (advisor)
This work deals with the measurement of earth resistance, definition, substances causing earth conductivity, basic norms for carrying out grounding revisions and effect of earth resistance on securing and protection element. In the introduction there is theoretical analyzing of grounding issue and principles for the measurement of parameters, which are important for the protection of persons and animals in order not to touch exposed conductive part accidentally, protection of equipment against high fault current and dangerous surges while the correct function of the connected electrical equipment. In the next part there are described methods of earth resistance and soil resistivity measuring. The practical part of the work summarizes the results of practical measurements in individual places with different measuring device.
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Zkušenosti se zavedením a uplatňováním požadavků na systém managementu jakosti dle ISO 9001 ve vybrané firmě.
Jiránek, Milič ; Janoušková, Alena (advisor) ; Šindelář, Petr (referee)
Seznámení s problematikou systému managementu jakosti. Historie a pojetí jakosti, důvody zájmu o jakost, přístupy k zabezpečování jakosti, přístupy k zabezpečování jakosti ve smyslu norem řady ISO 9000, Mezinárodní organizace pro normalizaci ISO, vývoj systému managementu jakosti podle souboru norem ISO 9000, struktura revidovaných norem, principy norem ISO 9000, procesní přístup, obecný obsah normy ISO 9001. Poskytnutí návodu, jak budovat QMS v organizaci. Popsání zkušeností se zavedením a uplatňováním požadavků na systém managementu kvality dle normy ISO 9001 v malé firmě podnikající v oboru zahradnictví. Posouzení přínosů i nevýhod spojených s implementací QMS do podnikové praxe.
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