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Mobile robot control system
Řezníček, Radek ; Kříž, Vlastimil (referee) ; Hynčica, Ondřej (advisor)
This thesis deals with differential drive wheeled mobile robot which is running under a real-time operating system. Introductory part is focused on theoretical description of robot and its original firmware. Practical part deals with creating software and implementation several methods that allow following the line by robot using reflectance sensor array. Significant part of this thesis is focused on design and implementation of communication protocol, based on IEEE 802.15.4 which provides communication between robot and PC. There is also created a PC application that allows to transmit commands to the robot and display information gained from robot.
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Differential chassis mobile robot trajectory planning
Chochel, Michael ; Věchet, Stanislav (referee) ; Krejsa, Jiří (advisor)
This work speaks about a suggestion of trajectory of mobile robot with nonholonomic movement limits and differential chassis while passing through a “T“ shaped crossroad. In the theoretical part some methods generally used to solve this task of planning a trajectory of the robot will be explained. In the practical part this task will be solved by an algorithm for searching the optimal trajectory to pass through the crossroad.
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Control of mobile robot
Vožda, Ondřej ; Skula, David (referee) ; Šembera, Jaroslav (advisor)
This thesis describes questions of developing the system for remote and presence control of a mobile robot (wheelchair). It is concerned with choice of a proper protocol for communications via wireless network, transmission of images from webcam and data from joystick. Next objective of the thesis is recognizing surrounding obstacles using ultrasonic range finders. Thesis describes observation arisen from using this type of sensors. One of the most important points of the thesis is to discuss the safety of usage of the developed system. In conclusion, possibilities for future development are stated.
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Hardware and software for mobile robots
Sárközy, Gabriel ; Skula, David (referee) ; Veselý, Miloš (advisor)
The aim of this work is to modify hardware and software of small mobile robots, so they can be better used in Micromouse and Path Follower challenges. The first part of the project includes debugging and creating of a correct documentation of the existing electric circuits used in the robot called RUBRIK. My work was also to design and realize mechanical, electrical and software upgrades. The second part includes the design and realization of similar modifications of the robot ROBIK. Each robot has an Atmel AVR microcontroller. Robots are programmed in C programming language.
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Control of a wheelchair
Vožda, Ondřej ; Kopečný, Lukáš (referee) ; Šolc, František (advisor)
This thesis describes development of control algorithm for a wheelchair. Wheelchair should be capable of tracking and following a wall or a similar flat surface. Thesis is supposed to be an extension of the previous concept, whose purpose was to allow remote telepresence control of this wheelchair. SRF08 ultrasonic range finders are used to measure distance from the wall. Furthermore, image processing for mark detection is discussed. Purpose of these marks is to increase precision during final phase of the parking.
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Control System for Small Mobile Robot
Sárközy, Imrich ; Macho, Tomáš (referee) ; Žalud, Luděk (advisor)
The aim of this work was to design a control system based on the XMega microcontroller, for a small mobile robot with an tracked undercarriage. At first, my work was to develop an electrical scheme and circuit boards for the control system. The next step was to connect sensors for non electric quantity and modify the control algorithms for a simple navigation. In the last phase I tuned the user interface and the whole control system for minimal data flow between the mobile platform and the user interface.
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Small vehicle motion control
Štark, Zdeněk ; Valach, Soběslav (referee) ; Macho, Tomáš (advisor)
In this thesis, a simple small vehicle powered by differential chassis was projected and constructed. The vehicle is controlled manually with the help of user program on personal computer (PC). The software equipment allows recording trajectory run by the small vehicle and then repeating it automatically. The operation system of the small vehicle is based on microcontroller ATmega16 series. Communication between the microcontroller and PC is carried out through RS232 serial bus. The vehicle has digital compass and five reflex sensors that serve for obstruction detection in the closest vicinity of the vehicle. Power unit of the vehicle consists of seven NiCd cells with the capacity of 500 mAh. Propellant unit is powered directly from NiCd cells. Voltage of 5 V for feeding of the control electronics is gained through the set up clasp source of voltage connected to NiCd cells.
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Electronic Unit for Odometer Carriage
Targoš, Lukáš ; Arm, Jakub (referee) ; Kopečný, Lukáš (advisor)
This thesis deals with electronics for processing of signals from incremental quadrature sensors and electronics design for position and rotation calculation using odometry and data transmission. The first part deals with the theory of incremental sensors, odometry, position calculations and hardware overview for implementation. The second part describes the practical implementation of hardware and software using the STM32F4 Discovery, as well as control measurements to verify the positioning and sending functionality. The result is a module including a testing carriage allowing odometric measurements.
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Odometer module for mobile robot
Davídek, Daniel ; Burian, František (referee) ; Jílek, Tomáš (advisor)
The main objective of this work was the development and realization of odometric module for mobile robot envMap. The module processes signals from the incremental encoder and then calculates the position and direction of the robot together with the probability of its occurrence. The calculated data with a time stamp obtained from the GPS, are then sent to the above-system via the serial interface. For the realization the development board STM32F407G was chosen. f this board can be configured to function as an encoder input. This minimizes the possibility of encoder data loss when external interrupts are handled. The STM32F4 will not be any pull-back in the later development as there are plenty of peripherals on STM32F4. They were designed with two printed circuit boards: the reduction for the GPS module and shield-board for STM32F4. The equations for calculating odometric information and the probability of occurrence are included in this work. To calculate the movement of the robot, the equation considering only the movement on the plane surface is chosen. Later in this thesis there is also description of the source code for the STM32 and its functionality. In the results there is a complete connecting diagram along with the description of the utility program ODOMAT and communication messages. Finally, measurements correcting systematic error in parameters of the robot are described and there is the final odometry measurements compared with GPS localization as ground truth.
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On the kinematics of wheeled mobile robots
Zoufalý, Stanislav ; Hrabec, Jakub (referee) ; Burian, František (advisor)
The bachelor thesis deals with the description of the concepts of nonholonomic mobile robots. Its aim is to get acquainted with the basic variants of structures, to build a mathematical model, to derive dynamic properties and to design a functional algorithm of a control system. The work describes the selection of suitable models, the implementation of two basic types of chassis and the selection of a suitable simulator for the implementation of models. These are types with Differential and Ackerman chassis. The thesis next describes the design of suitable control so as to meet the requirement of tracking the desired trajectory. Control algorithms and mathematical models were implemented in the MATLAB-Simulink software environment with the possibility of real 3D simulation in the Webots simulator.
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