National Repository of Grey Literature 6 records found  Search took 0.01 seconds. 
Analysis of the production imperfections influence on the stress and load capacity of the truss construction
Klíč, Jan ; Majer, Zdeněk (referee) ; Vrbka, Jan (advisor)
The bachelor's thesis deals construction solution of overhead crane load in different positions of external devices. The construction is loaded with dead-weight (gravitation) in the same time. The geometry is completely specified. Next, it concerned with impact of manufacturing inaccuracies in rod length on the total loading capacity.
Influence of saddle deflection coils inaccuracy on image aberrations
Mičulka, Martin ; Oral, Martin (referee) ; Sháněl, Ondřej (advisor)
Tato práce se zabývá výpočtem parazitických magnetických polí neseřízené deflekční cívky z důvodu výrobních nepřesností. Vztah mezi multipólovými magnetickými poli a asymetrickým rozložením vynutím elektronové vychylovací cívky je rozebrán. Nové a rychlé 2D metody výpočtu jsou představeny. Výsledky jsou poté porovnány s 3D metodou konečných prvků a s experimentem. Vliv multipólových parazitických polí způsobených nepřesností výroby na astigmatismus je tak v důsledku prošetřen.
Effect of Manufacturing Variations of Permanent Magnets in Surface-Mounted Permanent Magnet Motors
Vícha, Adam ; Mach, Martin (referee) ; Bárta, Jan (advisor)
Master’s thesis summs up issues of mounting pemanent magnets on rotor surface of permanent magnet synchronous machine. Literature reseach is divided in two parts. First one shows studies and experiments researching the impact of manufacturing tolerances of permanent magnets and wrong mounting on the rotor on cogging torque . The second part focus on analytical aproach of defining influence of permanent magnets on magnetic flux density in the air gap and phase induced voltage. Practical part focus on design of a prototype machine, wich will be used to research the impact of tolerances and imperfections. Parametric model of the prototype machine is created in Maxwell and is subjected to analysis via finite element method. Three different analysis were run, offset of permanent magnet, decrease and wrong dicertion of magnetization. At last the result of cogging torque and induced voltage are compared.
Influence of saddle deflection coils inaccuracy on image aberrations
Mičulka, Martin ; Oral, Martin (referee) ; Sháněl, Ondřej (advisor)
Tato práce se zabývá výpočtem parazitických magnetických polí neseřízené deflekční cívky z důvodu výrobních nepřesností. Vztah mezi multipólovými magnetickými poli a asymetrickým rozložením vynutím elektronové vychylovací cívky je rozebrán. Nové a rychlé 2D metody výpočtu jsou představeny. Výsledky jsou poté porovnány s 3D metodou konečných prvků a s experimentem. Vliv multipólových parazitických polí způsobených nepřesností výroby na astigmatismus je tak v důsledku prošetřen.
Effect of Manufacturing Variations of Permanent Magnets in Surface-Mounted Permanent Magnet Motors
Vícha, Adam ; Mach, Martin (referee) ; Bárta, Jan (advisor)
Master’s thesis summs up issues of mounting pemanent magnets on rotor surface of permanent magnet synchronous machine. Literature reseach is divided in two parts. First one shows studies and experiments researching the impact of manufacturing tolerances of permanent magnets and wrong mounting on the rotor on cogging torque . The second part focus on analytical aproach of defining influence of permanent magnets on magnetic flux density in the air gap and phase induced voltage. Practical part focus on design of a prototype machine, wich will be used to research the impact of tolerances and imperfections. Parametric model of the prototype machine is created in Maxwell and is subjected to analysis via finite element method. Three different analysis were run, offset of permanent magnet, decrease and wrong dicertion of magnetization. At last the result of cogging torque and induced voltage are compared.
Analysis of the production imperfections influence on the stress and load capacity of the truss construction
Klíč, Jan ; Majer, Zdeněk (referee) ; Vrbka, Jan (advisor)
The bachelor's thesis deals construction solution of overhead crane load in different positions of external devices. The construction is loaded with dead-weight (gravitation) in the same time. The geometry is completely specified. Next, it concerned with impact of manufacturing inaccuracies in rod length on the total loading capacity.

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