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Analysis of Selected Manoeuvres of Bicyclists
Doseděl, Jan ; Ptáček, Petr (referee) ; Semela, Marek (advisor)
Master thesis titled “Analysis of selected manoeuvres of bicyclists” in the first part deals with the history of bicycles, construction, division of bicycles and introduces–traffic accidents of cyclists and national legislation. Practical measurements with bicyclists is in the second part of this thesis. Cyclists performed deceleration on three surfaces, acceleration and a manoeuver, in which cyclist looked behind himself before changing the direction. The evaluation of all measurements and comparison with other similar works has been made in the last chapters.
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Motorcycle Dynamics Testing
Dolák, Jindřich ; Porteš, Petr (referee) ; Ramík, Pavel (advisor)
The contain of this work is to make suggestion of dynamic tests of motorbikes. I included my owns tests and results. I chose this theme because motorbikes are my hobby. I was really interested in these tests and what will the results turn out. The main part of this theme is to get the necessary values to compare dynamic parameters of motorbikes for braking and acceleration .
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Influence of Tyre Defect on the Driving Dynamics of a Vehicle
Kubík, Adam ; Bradáč, Albert (referee) ; Panáček, Vladimír (advisor)
In this thesis, an effect of a tyre defect on the driving dynamics of a vehicle is dealt with. The first part of the thesis is mainly concerned with the vehicle dynamics, road resistance, adhesion, orientation characteristics of the tyres and slowing down. This chapter is followed by an overview of the manufacturing process and construction of modern passenger car tyres. The practical part is focused on driving tests that are used to demonstrate the influence of tyre defects on handling characteristics of the vehicle. The main focus of this thesis is on directional variation, braking distance, deceleration and lateral acceleration. The very end of the thesis concentrates on tyre defect in higher speeds and its after-effects as well as precautions for mitigation of these after-effects.
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Analysis of Driving a Passenger Vehicle with a Trailer
Šujan, Tomáš ; Kropáč, František (referee) ; Vémola, Aleš (advisor)
The subject of this thesis is the analysis of the negative effects associated with the operation of a trailer for a personal vehicle with respect to the design speed, technical checks and analysis related legislation. Its work is drawn from the measurement, cooperation with leading Czech production plant trailers Vezeko s.r.o., an organization engaged in the implementation of engineering controls DEKRA Automobil a.s. and available literature, including electronic resources. Results of the work end with proposals for specific measures to minimize the identified adverse effects.
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Vehicle data analysis
Starý, Přemysl ; Porteš, Petr (referee) ; Zháňal, Lubor (advisor)
The diploma thesis deals with a data analysis of the Formula Student race car. An attention is given for both, vehicle and driver. Processes of braking, turning and balance of car are analysed. Special attention is given to the dampers positions while driving and their settings. Dampers velocity histograms and ride frequencies graph are put together. Algorithms in MATLAB are suggested to reduce requested time for analysis. Scripts for displaying important channels are made. Analyzed data are used to create events which accelerate orientation in record and tell the most important information.
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Braking of an induction machine
Mareček, Šimon ; Janda, Marcel (referee) ; Mach, Martin (advisor)
The work is focused on the braking of an induction engine and the risks associated with it. In the first part, there are readers acquainted with the technical parameters of the induction engine, which is used for simulations. The second part focuses on the simulation program Ansys Maxwell and the finite element method. In the third part, there are readers introduced to a general description of the induction machine. The fourth part consists of countercurrent braking. The penultimate part is devoted to dynamic braking. The last part contains a brief introduction to generator braking. The chapters focused on braking are supplemented by simulated waveforms.
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Influence of heavy vehicle load to the vehicle deceleration
Jirásková, Iveta ; Tylšar, Vladimír (referee) ; Bradáč, Albert (advisor)
The diploma thesis deals with the issue of braking trucks at different loads. The theoretical part defines the basic construction of trucks, truck brakes, the braking process and the factors that affect braking, braking deceleration, and legislative requirements for truck brakes. The practical part describes the course of experimental measurements, the use of the technique, the place of measurement, atmospheric conditions and used trucks. At the end of the work, based on experimental measurements, the obtained values of braking deceleration of trucks are evaluated.
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Systém ABS jako prvek aktivní bezpečnosti vozidla
Tvarůžek, Jiří
The thesis is focused on the issue of the ABS system, which is used for passenger vehicles. The first part of the work describes active safety elements that are used to eliminate and prevent traffic accidents. This group includes the ABS system, which is devoted to the second part of the literary research. It describes the operation of the system, the individual components of which the system is composed and its historical development. The second part of the work is focused on experimental measurements that assess the effect of ABS system activity on the braking distance of the vehicle at different road surface conditions. Results from laboratory measurements of ABS system activity are also processed in the work. The results show that, thanks to the active activities of the ABS system, it is possible to achieve a shorter braking distance even with different road surface conditions.
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Braking of an induction machine
Mareček, Šimon ; Janda, Marcel (referee) ; Mach, Martin (advisor)
The work is focused on the braking of an induction engine and the risks associated with it. In the first part, there are readers acquainted with the technical parameters of the induction engine, which is used for simulations. The second part focuses on the simulation program Ansys Maxwell and the finite element method. In the third part, there are readers introduced to a general description of the induction machine. The fourth part consists of countercurrent braking. The penultimate part is devoted to dynamic braking. The last part contains a brief introduction to generator braking. The chapters focused on braking are supplemented by simulated waveforms.
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