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A traction drive for an electric bike with motor "Heinzmann"
Němec, Petr ; Huták, Petr (referee) ; Vorel, Pavel (advisor)
This work deals with a proposal and construction of a DC/DC converter for a control of a DC motor Heinzmann. The DC/DC converter will be used in an electric drive for a bicycle. The proposal of the DC/DC converter is designed for such engine power to avoid fully any human force to drive - pedaling. The work includes informations about the used motor, progress of proposal and dimensioning of the converter - power circuit and control electronics.
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Bycicle with Combustion Engine and Electrical Transfer of Power
Mazálek, Tomáš ; Huták, Petr (referee) ; Vorel, Pavel (advisor)
The objective of this semester thesis is design of the control algorithm, needed control and power circuits and PCB design for the unfinished bicycle concept with a combustion engine and electric power transmission. The control algorithm had to be designed to make efficient use of the combustion engine performance and to minimalize the fuel consumption and noise level of the device. All circuits are fully implemented by analog components for which were designed printed circuit boards using program Eagle and this boards were revived and debugged.
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Design of Electric Wheelchair
Schlosserová, Magdalena ; Karásek, David (referee) ; Křenek, Ladislav (advisor)
The goal of this diploma thesis is design of the electric wheelchair. The purpose is designed with knowledge of historic and todays devices for handicapped people. The design respects aesthetic, ergonomic and technical requirements. The electric wheelchair would go over the usual obstacles, would be solution of long sitting problems and also have an interesting and modern feel.
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Electric drives in commercial vehicles and buses
Bahenský, Štěpán ; Kaplan, Zdeněk (referee) ; Píštěk, Václav (advisor)
This bachelor thesis focuses on electric and hybrid powertrains, which are used in utility vehicles and buses. According to this bachelor thesis is divided into two main parts. The first part deals with pure electric drives and its basic components. The subchapters describe various types of engines that are commonly used, but also the features and technologies of batteries. The second part deals with hybrid technologies, division according to the arrangement of components in vehicles, advantages and disadvantages of these solutions. Attention is also paid to the possibilities of battery systems. At the end of both parts, there are examples of commercial vehicles and buses with appropriate motorization, their comparison with competing models and a list of chosen technical parameters. The final chapter summarizes the current direction of the market and its further possible development in the future.
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Electric bike with a combustion-engine-powered generator
Mička, Dominik ; Červinka, Dalibor (referee) ; Vorel, Pavel (advisor)
A conceptual design and realization of a motor bike using combustion engine and electrical power transfer is the objective of this master´s thesis. Control strategy that allows combustion engine to reach maximal efficiency cooperating with wide range speed and torque operating area electromotor was created. All function blocks were realized. Also hardware of all needed parts was developed. The last part was a design and debugging of control software. Finally the functionality was documented by test drives and measurements.
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A design of engraving plotter
Brtník, Vojtěch ; Tůma, Zdeněk (referee) ; Tůma, Jiří (advisor)
This bachelor thesis, in addition to the actual design of the laser engraving laser, contains basic information about laser engraving technology and marking used in industry. It explains the physical principle of the laser and the laser source, which is essential to understand and classify laser modules. Provides an up-to-date market survey of the laser engraving modules and engraving plotters in use. In the design part, the design of an engraving plotter for SMC company is carried out using 3D models in Solidworks 2022 according to the specified parameters. The plotter design includes the selection of a suitable linear motion unit with electric drive, the assumed control, control calculations and the design of the plotter structural elements. The next section deals with the design of the support part and includes safety and functional elements. The paper concludes with a cost evaluation and recommendations for practice.
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Bike drivetrain
Daněk, Viktor ; Prokop, Aleš (referee) ; Řehák, Kamil (advisor)
This thesis focuses on the bicycle powertrain and its evolution. It describes the history of bicycles and gears. It provides an overview of the different gear train concepts. It includes an analysis of external drivetrains, hub gears, in-frame gears and other technologies used. It also focuses on the development of electric bicycles and electric drivetrains, including their classification by motor location on the bicycle and by the most common electric motor manufacturers. The thesis covers an analysis of gear shifting from a kinematic perspective and includes a computational simulation of the motion of a model of a shifter and its shift cable in Ansys software. The simulation brings useful insights for understanding the real operation of the shifter and the stresses on its gear cable when the chain is shifted between the pinions. The work also describes new or underused drive concepts and their characteristics. The different concepts are also evaluated in terms of their application to different types of wheels. The main result of the work is a complex description of the most used bicycle drive trains. The thesis also analyses the development of gear trains, electric drives and gear shifting.
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Electric drives in commercial vehicles and buses
Bahenský, Štěpán ; Kaplan, Zdeněk (referee) ; Píštěk, Václav (advisor)
This bachelor thesis focuses on electric and hybrid powertrains, which are used in utility vehicles and buses. According to this bachelor thesis is divided into two main parts. The first part deals with pure electric drives and its basic components. The subchapters describe various types of engines that are commonly used, but also the features and technologies of batteries. The second part deals with hybrid technologies, division according to the arrangement of components in vehicles, advantages and disadvantages of these solutions. Attention is also paid to the possibilities of battery systems. At the end of both parts, there are examples of commercial vehicles and buses with appropriate motorization, their comparison with competing models and a list of chosen technical parameters. The final chapter summarizes the current direction of the market and its further possible development in the future.
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Bycicle with Combustion Engine and Electrical Transfer of Power
Mazálek, Tomáš ; Huták, Petr (referee) ; Vorel, Pavel (advisor)
The objective of this semester thesis is design of the control algorithm, needed control and power circuits and PCB design for the unfinished bicycle concept with a combustion engine and electric power transmission. The control algorithm had to be designed to make efficient use of the combustion engine performance and to minimalize the fuel consumption and noise level of the device. All circuits are fully implemented by analog components for which were designed printed circuit boards using program Eagle and this boards were revived and debugged.
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Design of Electric Wheelchair
Schlosserová, Magdalena ; Karásek, David (referee) ; Křenek, Ladislav (advisor)
The goal of this diploma thesis is design of the electric wheelchair. The purpose is designed with knowledge of historic and todays devices for handicapped people. The design respects aesthetic, ergonomic and technical requirements. The electric wheelchair would go over the usual obstacles, would be solution of long sitting problems and also have an interesting and modern feel.
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