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Automotive Electric Motors Analysis and Innovation
Vala, Tomáš ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
Electric drives used in automotive industry are often based on standard DC motor as it is widely recognised as mature and reliable technology. The most common applications of DC motors in automotive industry are starters and wind screen wiper motors. Aim of this thesis is to provide design overview of typical automotive DC motor therefore main parts and features of the machine will be described in detail. Main disadvantage of DC motor is „sliding contact“ between commutator and carbon brushes which introduces source of electromagnetic disturbance and requires regular maintenance. Within this project different aspects of DC motor design and innovation are expected to be tackled including examples of loss calculation.
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Vehicle Lighting Systems Optimization
Vala, Tomáš ; Huzlík, Rostislav (referee) ; Hájek, Vítězslav (advisor)
In the present vehicle lifting is one of the most important topics of safety in traffic. The new rules were determined since 1st July introducing all-day lightening during a day in a full vision over all year. Updating of rules of traffic was especially ganerated by necessity of heighten the safety in traffic on roads. Automotive electronics is concerned with a lighting of vehicles and improving of lighting in unfavourable situations (mist, rain, night). Modernizing is lighting of additional lights like for example adaptive headlights, night vision systems. Lihgting is the most basic component of active safety which contribute to increment of safeness of traffic.
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Single-Image License Plate Recognition
Vala, Tomáš ; Winkler, Zbyněk (referee) ; Štanclová, Jana (advisor)
The diploma thesis deals with analysis and design of an automatic system for a single-image license plate (LP) recognition. Input data came from a system for car speed measurement on the roads in the emirate of Abu Dhabi (the United Arab Emirates). A goal is to recognize a numeric identi cation code on a LP and a type of the LP. In details there are discussed individual parts of the system for LP recognition. A particular stress is put on segmentation and grouping of individual characters to be able to utilize specific information on the LP from Abu Dhabi during the character recognition. The diploma thesis compares several methods for character recognition - a minimum distance classi er, feed-forward neural networks and hidden Markov models. The methods (and some modifications of them) are tested on real data and compared according to the percentage of correctly recognized digits (at fi rst the digits were manually classi ffied). Wrongly recognized LPs are undesirable. Instead in some cases it is better to mark the LP as "unrecognized". That's why there were introduced sophisticated tests for recognized digits reliability veri cation. A summary of our own results is included.
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Vehicle Lighting Systems Optimization
Vala, Tomáš ; Huzlík, Rostislav (referee) ; Hájek, Vítězslav (advisor)
In the present vehicle lifting is one of the most important topics of safety in traffic. The new rules were determined since 1st July introducing all-day lightening during a day in a full vision over all year. Updating of rules of traffic was especially ganerated by necessity of heighten the safety in traffic on roads. Automotive electronics is concerned with a lighting of vehicles and improving of lighting in unfavourable situations (mist, rain, night). Modernizing is lighting of additional lights like for example adaptive headlights, night vision systems. Lihgting is the most basic component of active safety which contribute to increment of safeness of traffic.
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Automotive Electric Motors Analysis and Innovation
Vala, Tomáš ; Mach, Martin (referee) ; Hájek, Vítězslav (advisor)
Electric drives used in automotive industry are often based on standard DC motor as it is widely recognised as mature and reliable technology. The most common applications of DC motors in automotive industry are starters and wind screen wiper motors. Aim of this thesis is to provide design overview of typical automotive DC motor therefore main parts and features of the machine will be described in detail. Main disadvantage of DC motor is „sliding contact“ between commutator and carbon brushes which introduces source of electromagnetic disturbance and requires regular maintenance. Within this project different aspects of DC motor design and innovation are expected to be tackled including examples of loss calculation.
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