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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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Control System of Small Mobile Robot
Rysnar, Jiří ; Florián, Tomáš (referee) ; Žalud, Luděk (advisor)
This master’s thesis elaborates on the control of a wheeled mobile robot and its sensor system. The sensors provide information about distances of obstacles in its surroundings and orientation in area. The communication is realized by radiomodems, commands and data are sent by serial link between microncontroller and the PC.
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Wireless Communication in Mobile Robotics
Hricišin, Tomáš ; Burian, František (referee) ; Žalud, Luděk (advisor)
This work deals with the fundamental principles of wireless communications in mobile robotics. It introduces overview of the use of different frequency bands for wireless communications needs and control of mobile devices in Czech Republic. It also contains a brief overview of all applicable technologies and available modules that can be used for wireless communication. The theoretical part deals with some of the protocols that were used in the practical part of this work and the manner of wave propagation in buildings. The practical part consisted of a design of our own application to monitor and control the module Mikrotik Routerboard. With this application we have tested and compared two wireless cards of this module.
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Local Navigation for Outdoor Robot
Skácel, Martin ; Veselý, Miloš (referee) ; Žalud, Luděk (advisor)
This diploma thesis deals with complete designing and implementation of local navigation of a robot which travels according to set GPS. This work contains a study of contemporary used principles of the sensors which can be used as the components of the robot. There are sensors for measuring the surroundings of the robot and orientation of the robot in the environs. The equipment includes an instructing control unit with the ATmega8 microcontroller. This equipment collects data from the sensors and transfers them to the other systems of the robot. The following part of the thesis deals with the draft of the buses and communication protocols, which are necessary for connection between the sensors and the control unit. The I2C and RS232 buses were chosen as the most suitable. The communication protocol was borrowed from the semester project written by Bc. Michal Sitta. The main task of this control unit is reading out the data which have been measured from connected sensors. The realization of interface between the sensor bus and the major system is another core goal of the control unit. The system for a local navigation is designed with the approach which allows the widest range of extensibility. During the designing of the control unit the future possibility of insertion other sensors was taken into consideration.
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Wheeled-drive Robot Control
Sitta, Michal ; Veselý, Miloš (referee) ; Žalud, Luděk (advisor)
The aim of this thesis is to describe the electronics of autonomus outdoor robot called TIM2. TIM2 is a group project and only a part of the project is presented. First part this work is about chasses common used in robotics. Detailed description of each type of module used is described in this work. There is also described communication protocol. A controllers for front and rear axle are also described. One part of this work is measurement, it contains electronics characteristic of modules and measurement to describe quality of motor controllers. Last part of the document is about communication between modules and impact on the robot functionality in the case of failure of a module. Enclosure provides complete circuit diagrams, printed circuit boards, planting plans, lists of components for all designed modules.
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Minidarpa robot - software design
Kopecký, Martin ; Žalud, Luděk (referee) ; Kopečný, Lukáš (advisor)
This master‘s thesis deals with theme of autonomous mobile robots. In sequence of the bachelor’s thesis its goal is to design a control system of the outdoor mobile robot for Minidarpa type competition. It could be practically used for an autonomous transportation of material. In design of the control system the attention is aimed at planning algorithms which are divided into the local and the global parts. Most of the work is paid to a global planning algorithm, which plans, in help with graph algorithms, points needed to travel to achieve the goal. The global map is defined in RNDF file which must be preprocessed for needs of planning. There are designed classes in C++ language for communication with subsystems too. The control system further contains graphical interface for operation of the robot and a remote control through a wireless gamepad.
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Minidarpa robot - senzoric subsystem
Sedlák, Luboš ; Žalud, Luděk (referee) ; Kopečný, Lukáš (advisor)
This master’s thesis describes a sensorial subsystem of a mobile robot. The thesis mentions the structure and a basis of the satellite navigation. There are also described each systems and visualization techniques as e. g. WGS 84, including also other systems for specification of more accurate position on the Earth (EGNOS, WAAS and others). This thesis describes closely also a differential GPS and the corrections. For the purposes of the thesis there has been assembled GPS software for a fundamental and a remote station. There have been chosen and used modules for receiving a GPS signal and wireless modules for their communication. There are also used outcomes from the project of the Open Street Map in the thesis. Results of this project are described in details, decoded, adjusted and converted into RNDF file. At the end of this thesis there has been composed a function of the program for portable camera which works on principle time of flight. This portable camera is dedicated to look for immediate barrier and also for 3D space view in front of the robot. This thesis also including the process how the power source has been built up for this portable scanner.
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Sattelite Navigation and Compasss Data Fusion
Maceček, Ivo ; Kopečný, Lukáš (referee) ; Žalud, Luděk (advisor)
Theoretical information about different satellite navigation systems used for determination of position. Special attention is attended to system GPS. There are consulted main principles of the GPS and some error sources. Application of differential GPS for minimization of these errors is discussed. Next part is about examples of basic principles for measuring earth magnetic field. Last chaps are about practical realization of mentioned DGPS, which is applied for outdoor mobile robot navigation. There is described hardware structure, software utilities and application of an aided tool for GPS - electronic compass. Some practical measurements and results are presented.
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Laser proximity scanner - Electronics
Padyšák, Zdeněk ; Burian, František (referee) ; Žalud, Luděk (advisor)
In first chapter I introduce with aim of diploma work and in second chapter with principles distance measuring in robotic. After it in next chapter I describe used distance sensor, his principle and characteristics. In fourth chapter I describe control and parts mechanics shoulders. The fifth chapter describes program, which control mechanics shoulders by the 32bits microcontroller Freescale. At last sixth chapter gained data are modified and resulting imagery in 2D and in 3D.
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