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Design of 1/4 car model for damper testing
Jaroš, Petr ; Růžička, Bronislav (referee) ; Roupec, Jakub (advisor)
This thesis deals by the design of 1/4 car model for testing vehicle dampers, which can be used to simulate the real suspension of a vehicle wheel (up to a maximum car weight of 1,970 kg) and the so-called linear wheel suspension. A linear mathematical 1/4 car model with 2 DOF (Degrees Of Freedom) and data from literature search are used to design and derive the basic parameters of the device. The thesis contains a description of the linear mathematical model and its outputs (acceleration of the sprung mass and forces acting on the sprung mass), description of designed device, descriptions of created simulations (static, modal and harmonic analysis in ANSYS Workbench 2020 R2) and conceptual design of the modifications this device for another possible use for testing of bicycles.
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Design of dynamic models for traction control of experimental vehicle
Jasanský, Michal ; Porteš, Petr (referee) ; Grepl, Robert (advisor)
The Master's thesis deals with the simulations kinematics and dynamics of experimental four-wheeled vehicle with all-wheel steering and all-wheel drive. Suggestion of vehicle stability systems ABS/ASR for traction control is included. There are several dynamics models with their comparison. The estimation of important vehicle parameters is implemented. Based on knowledge the simple vehicle stability system ABS/ASR is created.
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Self-Driving of a Model Car
Hazucha, Ivan ; Šimek, Václav (referee) ; Bidlo, Michal (advisor)
The aim of this thesis is to demonstrate options for self-driving model cars, focused on local path planning methods and obstacle avoidance. As a part of the project, the model was supplemented by a computing platform Raspberry Pi and appropriate sensors. Specifically, a 2D LiDAR sensor was used for detection and measuring the distance of surrounding objects, an incremental rotary encoder for measuring the distance travelled and current speed, and a gyroscope to keep track of the vehicle's relative orientation. Subsequently, a control system was implemented. This system is able to receive and process sensor data, use it to estimate vehicle's current location, compute an optimal trajectory in an uncharted environment, and control the vehicle's actuators accordingly. The result is a functional model car able to navigate in an unknown environment and reach specified goals by following a trajectory, dynamically generated depending on the surrounding obstacles.
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Cooled EGR system loop architecture for gasoline engines
Pospíšil, Juraj ; Svída, David (referee) ; Bazala, Jiří (advisor)
Táto diplomová práca je zameraná na preukazovanie vplyvov rôznych architektúr spätnej recirkulácie spalín na preplňované benzínové motory. Simulácie boli vytvorené v termodynamickom simulačnom programme GT-Power. Práca začína porovnávaním vplyvov spätnej recirkulácie na ustálené stavy motora, najmä z hľadiska spotreby, ktoré sú následne implementované do tranzientných modelov, simulujúc emisné testovacie cykly. Na konci práce sa venujem vplyvom spätnej recirkulácie na funkciu oxidačno-redukčného katalyzátora a na funkciu turbodúchadla.
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RC car model
Veverka, Vítězslav ; Frýza, Tomáš (referee) ; Šebesta, Jiří (advisor)
The aim of this bachelor thesis was an analysis of possibilities and requirements for driving systems of vehicle model. In the thesis, available undercarriages, which are suitable for an implementation of driving system, were presented. Furthermore, the study of the interface for the regulator and possibility to use a microcontroller in the driving system, were necessary. The wireless communication between transmitting part and microcontroller was tested just as controlling of an engine speed. The programme for driving of the model in PC was designed and tested by using C language. General behaviour of the model was tested. The response to control and achieved driving precision was tested too. In the end, assistant sensors for collision detection were added to the model.
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Self-Driving of a Model Car
Hazucha, Ivan ; Šimek, Václav (referee) ; Bidlo, Michal (advisor)
The aim of this thesis is to demonstrate options for self-driving model cars, focused on local path planning methods and obstacle avoidance. As a part of the project, the model was supplemented by a computing platform Raspberry Pi and appropriate sensors. Specifically, a 2D LiDAR sensor was used for detection and measuring the distance of surrounding objects, an incremental rotary encoder for measuring the distance travelled and current speed, and a gyroscope to keep track of the vehicle's relative orientation. Subsequently, a control system was implemented. This system is able to receive and process sensor data, use it to estimate vehicle's current location, compute an optimal trajectory in an uncharted environment, and control the vehicle's actuators accordingly. The result is a functional model car able to navigate in an unknown environment and reach specified goals by following a trajectory, dynamically generated depending on the surrounding obstacles.
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|
|
Design of 1/4 car model for damper testing
Jaroš, Petr ; Růžička, Bronislav (referee) ; Roupec, Jakub (advisor)
This thesis deals by the design of 1/4 car model for testing vehicle dampers, which can be used to simulate the real suspension of a vehicle wheel (up to a maximum car weight of 1,970 kg) and the so-called linear wheel suspension. A linear mathematical 1/4 car model with 2 DOF (Degrees Of Freedom) and data from literature search are used to design and derive the basic parameters of the device. The thesis contains a description of the linear mathematical model and its outputs (acceleration of the sprung mass and forces acting on the sprung mass), description of designed device, descriptions of created simulations (static, modal and harmonic analysis in ANSYS Workbench 2020 R2) and conceptual design of the modifications this device for another possible use for testing of bicycles.
|
|
|
Cooled EGR system loop architecture for gasoline engines
Pospíšil, Juraj ; Svída, David (referee) ; Bazala, Jiří (advisor)
Táto diplomová práca je zameraná na preukazovanie vplyvov rôznych architektúr spätnej recirkulácie spalín na preplňované benzínové motory. Simulácie boli vytvorené v termodynamickom simulačnom programme GT-Power. Práca začína porovnávaním vplyvov spätnej recirkulácie na ustálené stavy motora, najmä z hľadiska spotreby, ktoré sú následne implementované do tranzientných modelov, simulujúc emisné testovacie cykly. Na konci práce sa venujem vplyvom spätnej recirkulácie na funkciu oxidačno-redukčného katalyzátora a na funkciu turbodúchadla.
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RC car model
Veverka, Vítězslav ; Frýza, Tomáš (referee) ; Šebesta, Jiří (advisor)
The aim of this bachelor thesis was an analysis of possibilities and requirements for driving systems of vehicle model. In the thesis, available undercarriages, which are suitable for an implementation of driving system, were presented. Furthermore, the study of the interface for the regulator and possibility to use a microcontroller in the driving system, were necessary. The wireless communication between transmitting part and microcontroller was tested just as controlling of an engine speed. The programme for driving of the model in PC was designed and tested by using C language. General behaviour of the model was tested. The response to control and achieved driving precision was tested too. In the end, assistant sensors for collision detection were added to the model.
|
|
|
Design of dynamic models for traction control of experimental vehicle
Jasanský, Michal ; Porteš, Petr (referee) ; Grepl, Robert (advisor)
The Master's thesis deals with the simulations kinematics and dynamics of experimental four-wheeled vehicle with all-wheel steering and all-wheel drive. Suggestion of vehicle stability systems ABS/ASR for traction control is included. There are several dynamics models with their comparison. The estimation of important vehicle parameters is implemented. Based on knowledge the simple vehicle stability system ABS/ASR is created.
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