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Magic Formula tire model
Omasta, Lukáš ; Zháňal, Lubor (referee) ; Straka, Tomáš (advisor)
The goal of this bachelor’s thesis is to conduct a research of modern mathematical models of tires of the Magic Formula type and to determine the input and output parameters influencing these models. The thesis describes the most commonly used Pacejka models and MF-Tire models. Based on the research, a simple model of this type is subsequently created to demonstrate its functionality. The outputs of the model generated from the provided data are presented using graphs and a set of constants for the individual force and moment characteristics.
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Construction of tires
Dlouhý, Filip ; Fojtášek, Jan (referee) ; Zháňal, Lubor (advisor)
The intention of this bachelor’s thesis is a general summary of the function, construction, history, and comparison of tires of individual vehicle categories. The comparison focuses on the functions and uses of tires. It includes an outline of modern trends and future development of tires.
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Design of control system of pneumatic manipulator
Roun, Jiří ; Bradáč, František (referee) ; Vetiška, Jan (advisor)
This bachelor thesis is about the design of the control system for the pneumatic manipulator. Initial research describe the current possibilities of pneumatic products for driving and positioning of pneumatic assemblies. The practical part of this thesis describes the connection of hardware with PLC terminals and the design of software for controlling the manipulator. At the end of the thesis is testing part realized with designed software and measuring software.
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Identification of Relevant Tire Traces in Traffic Accident Place Based on their physical characteristics
Bilík, Martin ; Kovanda, Jan (referee) ; Kledus, Robert (referee) ; Bradáč, Albert (advisor)
The thesis deals with the possibilities of identifying the relevant tire traces at the place of a traffic accident based on their physical characteristics. Braking traces on the road are one of the most important objective elements for accident analysis, their easy and accurate detection is very important for accurate accident assessment. With the increasing technical equipment of vehicles, especially with the introduction of newer generations of braking assistance systems, traces left by the tires become almost invisible to the human eye. It is therefore highly desirable that their detection should be not only as accurate as possible but also as easy and fast as possible, not only for forensic experts, but especially for members of the traffic police departments. In line with the development and introduction of new safety and assistance systems for vehicles should also be the development of means and methods of providing the basis for technical analysis of traffic accidents. Reality shows that the procedures, even if still functional, are practically identical for several decades, are dependent on the subjective capabilities of the documenting person. An essential element of the work, compared to the previously described measurement procedures, is the use of modern methods and devices at the highest known level of knowledge. The aim is to find and verify a simple, accurate, subjectively least influenced detecting method for tire traces on the road. A series of measurements confirmed the possibility of using the thermal camera at the technical level usually available at the place of the accident, under limited atmospheric and time conditions. In addition, laser-induced plasma spectroscopy and rLIBS were used. This method of detecting spotless tire treads can be marked as a minimally feasible documentary and at the same time as fast enough, based on the measurements made and the intended removal of defects of the instrument in the development phase of the prototype.
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The study wheeled undercarriages of mobile machines
Olšovský, Petr ; Škopán, Miroslav (referee) ; Kašpárek, Jaroslav (advisor)
The objective of this bachelor thesis is to summarize basic findings regarding various types of wheeled undercarriages that are used on contemporary machines. The first part of this paper deals with numerous requirements that should be fulfilled by the design of an undercarriage. The fulfilment of these requirements also helps to assess whether the design should be used for a specific machine. Another focus of this paper is to summarize all design solutions regarding propulsion, tyres, stabilizing elements and steering mechanisms. These solutions are compared to each other. Important design elements of wheeled undercarriages are described as well.
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Design of Device for O-rings Fitting on Overflow Valve of Injection Pump
Matula, David ; Beran, Martin (referee) ; Ramík, Pavel (advisor)
The thesis deals with the problem of threading o-rings on the overflow valve of the CP4 injection pump. The thesis was prepared for the company Bosch Diesel s.r.o. in Jihlava. In the thesis, first of all, an introduction of the company and their products is given. In the next part of the thesis, an analysis of the current state of the workplace is made. This is followed by market research in the field of automated o-ring threading. This research served as inspiration for the design of the threading head. The constructed head was manufactured and tested at the test site. After testing the head, several variations of the o-ring threading station were developed. A multi-criteria method was used to select the most suitable variant. A design concept of the workstation was developed for the winning variant. The resulting concept was evaluated from an economic and technical point of view.
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Design of equipment for measuring aerodynamically relevant parameters of passenger car tire
Kojecký, René ; Blaťák, Ondřej (referee) ; Vančura, Jan (advisor)
This diploma thesis deals with the issue of measuring tire parameters and their impact on vehicle aerodynamics. The aim is to create a design of the tire test equipment together with a suitable method for evaluating obtained results. The theoretical part provides an overview of currently used tire testing methods. The market research follows in order to select suitable components for the proposed measuring station. The output of the practical part of the work is the assembly of the solver in the form of a Matlab script and a design with the necessary drawing documentation.
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Rallye Championships and Used Engineering Including WRC Series
Novák, Pavel ; Porteš, Petr (referee) ; Ramík, Pavel (advisor)
The content of the bachelor thesis is an overview of the current condition of technics used in the car racing competitions focused on the WRC serial. The thesis is diveded into five parts. The first part introduces the contemporary car competitions and FIA federation. The second part is focused on specification of the WRC cars. The third part familiarizes with the organization process of the WRC championship. There are introduced crews with their teams and their results in the constructor cup. The main attention is given to the parts four and five which deal with the contemporary engineering used in WRC and the development trends in this field. There are given methods of virtual designing, computer simulation and testing. In the conclusion of the thesis there are mentioned examples of WRC car development and solutions assumed for the serial cars from the WRC technics.
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Tyre Mathematical Models
Rubíček, Pavel ; Blaťák, Ondřej (referee) ; Hejtmánek, Petr (advisor)
Today the tire is an integral part of the vehicle. During its development is used in various methods. This publication deals with some of them. In her research is necessary to know its features and design solutions. Basic tire structure is described in the first part. These findings are then fit to the other chapters. In the second part there are examples of several tire models in the form of mathematical equations. These equations are used to determine the force and moment loads acting on the tire. The resulting load may aid in the design of new types of tires. The last part describes how to use mathematical models to calculate and here are other methods how else can it gets information about the load on the tire. There is a list of organizations that deal with simulations and tests.
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Design of Formula Student chassis
Zubíček, David ; Blaťák, Ondřej (referee) ; Porteš, Petr (advisor)
Diploma thesis deals with comparison of different types of tyres destined for Formula Student vehicle. Comparison is from view of chosen characteristics and from view of simulations for one lap. Thesis deals with kinematics design of suspension according to chosen tyre and according to improvement of car ability of monopost Dragon 6
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