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Autonomous mobile robot
Pijáček, Ondřej ; Kopečný, Lukáš (referee) ; Jílek, Tomáš (advisor)
This thesis describes the design and implementation of chassis for autonomous wheeled mobile robot along with a proposal for a suitable control system. To move the robot was necessary to create individual modules for measuring environmental data, its subsequent processing and power management. For the entire robot system capable of rapid interaction, certain tasks are separated and controlled by its own microcontroller. For communication between the modules were chosen and designed SPI bus communication protocol. Thus assembled chassis then communicates over a serial line with higher system from which acquires data indicative of a subsequent procedure. The result is a controlling system communicating between its parts. Part of the design is also defined communications protocol that transmits data on the one hand and also used for fault diagnosis when sending information. Furthermore, there are patterns and specific methods for controlling the individual modules. In conclusion, the thesis described the proposed testing the robot in real conditions, along with the measurement results obtained in the task of autonomous driving.
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Mobile robot control system
Bugár, Loránt ; Jílek, Tomáš (referee) ; Hynčica, Ondřej (advisor)
Bachelors project is fixated for creating a mobile robot with a real time operating system. The robot control system is based on a microcontroller Arduino with ARM Cortex-m3 processor. The practical part is dealing with resolving the client-server communication with the UDP protocol, also with the identification of the engine from measured data’s by the Simulink and subsequently designing the PI regulator from the identificated data’s. In he last part of the work the focus is giving to solving the communication with I2C bus and using sensors like : accelerometer, ultrasonic sensor, infra sensor, light sensor, hall sensor and usage of a robotic arm. An application is created for controlling the robot and for visualisation of sensor readings..
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Magnetic field meter
Rejnuš, Milan ; Hadinec, Michal (referee) ; Friedl, Martin (advisor)
This thesis summarizes well-known methods of magnetic fields and quantities. Particular methods and their principles are discussed and problems at usage are described as well. The proposal of laboratory product construction for teaching of subject Electrical engineering 1 is first part of the thesis. It is a case of magnetic measurement in the gap of the core excitation. The second part of the thesis describes design of the realization of the laboratory product. A microcontroller is used for data processing. There are discussed the possibilities of functions and the periphery control of connectable to microcontroller.
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Optimization model of hydropower plant
Kršiak, Oliver ; Novotný, Jan (referee) ; Radil, Lukáš (advisor)
This diploma thesis deals with the creation measuring instruments and program for controlling model hydropower plant intended for laboratory use. The first step is to improve the mechanical performance of the original model of hydroelectric power. The second step is to select a revive measuring instruments for electric values of the plant. The third step is to create a program for displaying electrical parameters and control the plant. The final step was re-measuring the operating characteristics of the generator model hydropower plant.
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Scooter with a BLDC drive
Doležal, Lukáš ; Kozovský, Matúš (referee) ; Veselý, Libor (advisor)
The bachelor thesis is focused on a design of a propulsion system for folding portable scooter. The BLDC motor is used as a propulsion. The thesis deals with the design of electronics for sensor control. Motor is controlled by six-step commutation method. In the practical part of thesis the controller of current is set and functionality is checked.
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Current sensors
Vaculík, Vlastimil ; Červinka, Dalibor (referee) ; Patočka, Miroslav (advisor)
This diploma theisis deals with the theoretical analysis of the known types of current sensors, including for example, current transformers, shunts, and advanced sensors using Hall sensor or Rogowski coil. Subsequently, the rest of the work deals with the issue of current transducers with Hall sensors, without using a ferromagnetic circuit. For optimal currnet measure and overall precision, several possible options are designed and calculated. This includes number of sensing elements and distribution of sensors around the wires. Based on calaculation of magnetic intensity, related 3D charts ale plotted unsing Excel software. These charts illustrate the theoretical calculations of field distribution around conductors for various number of sensor. In the last part, components ale designed for practical implementation and scheme of electrical wiring. According to this scheme there is PCB designed as well. Whole current meter ir practically build and its results are compared with theoretical assumtions that are discussed in conclusion part of this theisis.
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Current Sensors
Vaculík, Vlastimil ; Červinka, Dalibor (referee) ; Patočka, Miroslav (advisor)
This diploma theisis deals with the theoretical analysis of the known types of current sensors, including for example, current transformers, shunts, and advanced sensors using Hall sensor or Rogowski coil. Subsequently, the rest of the work deals with the issue of current transducers with Hall sensors, without using a ferromagnetic circuit. For optimal currnet measure and overall precision, several possible options are designed and calculated. This includes number of sensing elements and distribution of sensors around the wires. Based on calaculation of magnetic intensity, related 3D charts ale plotted unsing Excel software. These charts illustrate the theoretical calculations of field distribution around conductors for various number of sensor. In the last part, components ale designed for practical implementation and scheme of electrical wiring. According to this scheme there is PCB designed as well. Whole current meter ir practically build and its results are compared with theoretical assumtions that are discussed in conclusion part of this theisis.
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Evaluation of damaged components for photovoltaic power plant monitoring
Rataj, Pavel ; Jančík, Stanislav (referee) ; Marada, Tomáš (advisor)
The thesis deals with proposal and implementation of a test station for feasible measurement of Hall´s probes, which are used for measurement of extensive direct currents, especially in FVE. The customers are often complaining about Hall´s probes. The solution is specific model of probe, which would be enabling to accelerate measuring of given back probes from working order and evaluation for proper functions of probes. For the final asses we need to compare given back probe with so-called Hall probe. The so-called Hall´s probe will be permanently placed on model and will indicate relatively identical data. PLC made by DOMAT company will compare and evaluate data, whether a difference measured from both probed is acceptable or not.
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