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Motors for automotive wipers
Sekerka, Jan ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
This thesis deals with the innovation of DC motors with permanent magnets used in automotive technology to drive wiper mechanism to reduce the volume and weight of the active materials. Potential innovations is mainly using magnets of the magnetic rare earths, such as Neodym or samarium-cobalt. Another option is to reduce the rotor to decreases the number of threads (here, it's all about, what are the requirements for performance). The result is an innovative motor, wherein the volume of the permanent magnets is reduced by 65% and total volume of the motor by 23% while maintaining the rotor parts. Also slightly raised performance with Neodymium permanent magnets.
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Production and processing of tubes
Rytíř, Martin ; Harant, Martin (referee) ; Podaný, Kamil (advisor)
This thesis presents the analysis of individual methods used in the production of seamless and seam steel pipes. It is a literature review that describes the essence of individual approaches to production, their comparison and use in the domestic market. In particular, it describes seamless tubes produced by centrifugal casting and a forming method which further divides them into rolling, pressing and drawing, and seams, made of sheets and strips, which are formed into a tube shape and welded by an appropriate method falling under the category of fusion or pressure welding.
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Automotive Electric Motors Analysis and Innovation
Špaček, Ladislav ; Grmela, Petr (referee) ; Hájek, Vítězslav (advisor)
Direct current motors and stepping motors are very often used for electric drives in cars. The most frequent representatives of direct current motors are electric starter and wind- screen wiper motor. Stepping motors are very often used for electric regulating of outsides driving mirrors and seats. This study is focused on innovation and DC permanent magnet motor. The disadvanage of direct current motors is so called „sliding contact“. A possible compensation of direct current motor are EC (electronically commutator) motors that do not need sliding contact for their work.
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Production and processing of tubes
Rytíř, Martin ; Harant, Martin (referee) ; Podaný, Kamil (advisor)
This thesis presents the analysis of individual methods used in the production of seamless and seam steel pipes. It is a literature review that describes the essence of individual approaches to production, their comparison and use in the domestic market. In particular, it describes seamless tubes produced by centrifugal casting and a forming method which further divides them into rolling, pressing and drawing, and seams, made of sheets and strips, which are formed into a tube shape and welded by an appropriate method falling under the category of fusion or pressure welding.
|
|
|
Motors for automotive wipers
Sekerka, Jan ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
This thesis deals with the innovation of DC motors with permanent magnets used in automotive technology to drive wiper mechanism to reduce the volume and weight of the active materials. Potential innovations is mainly using magnets of the magnetic rare earths, such as Neodym or samarium-cobalt. Another option is to reduce the rotor to decreases the number of threads (here, it's all about, what are the requirements for performance). The result is an innovative motor, wherein the volume of the permanent magnets is reduced by 65% and total volume of the motor by 23% while maintaining the rotor parts. Also slightly raised performance with Neodymium permanent magnets.
|
|
|
Automotive Electric Motors Analysis and Innovation
Špaček, Ladislav ; Grmela, Petr (referee) ; Hájek, Vítězslav (advisor)
Direct current motors and stepping motors are very often used for electric drives in cars. The most frequent representatives of direct current motors are electric starter and wind- screen wiper motor. Stepping motors are very often used for electric regulating of outsides driving mirrors and seats. This study is focused on innovation and DC permanent magnet motor. The disadvanage of direct current motors is so called „sliding contact“. A possible compensation of direct current motor are EC (electronically commutator) motors that do not need sliding contact for their work.
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