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Design of complex sensor node for LoRa network
Obrtáč, Tomáš ; Sova, Václav (referee) ; Chalupa, Jan (advisor)
This thesis covers development of complex sensor for LoRa network. The thesis is extended by theoretical section, which explains basic properties of Lora network. Theoretical section also covers analysis of software and hardware products on market. The practical part of thesis is focused on creation of complex sensor and development of complete server for its operation. In the hardware part is described method of choosing the right sensors, designing the PCB and description of important parts. Software development is described from acquisition of network server, through creating the computer application, to programming the MCU.
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Design of Power HIL unit for Li-pol cell simulation
Pribulla, Daniel ; Sova, Václav (referee) ; Chalupa, Jan (advisor)
This thesis deals with design and construction of a Li-po cell Power-HIL simulator intended for testing of a small wireless module's powering. The simulator is based on a battery model which includes the influence of temperature and battery degradation on battery parameters. To estimate model parameters a series of tests on real Li-po cell with capacity 250mAh were performed. Charging and discharging tests were performed by different temperatures of the battery. In purpose of this test a simple thermal chamber was constructed. Design of the power electronics of the device was tested in the Simscape library of the Matlab Simulink. The result is a working prototype of the simulator tested for charging and discharging of batteries with capacity in range 100-1500 mAh. The simulator can be controlled with graphical user interface capable of setting the battery parameters and real time observation of the model variables.
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Analysis and modeling of sensors and actuators of LEGO Mindstorm
Hanuš, Pavel ; Sova, Václav (referee) ; Grepl, Robert (advisor)
The focus of this thesis is a detailed analysis and modeling of selected sensors and actuators of programmable robotic kit LEGO Mindstorms NXT 2.0. Actuators are represented by servomotors and the selected sensors include a color and an ultrasonic sensor, both available in the basic version of the kit, and a gyro sensor made by HiTechnic. The thesis describes the realization and evaluation of experiments performed for each element resulting in graphical representations of the sensors’ properties, models in Simulink environment representing the respective elements, and datasheets – overviews of parameters and characteristics of the individual sensors and actuators. The detailed analysis of the sensors and servomotors of the kit provides an overview of the possibilities, but also the limitations of the particular elements. This knowledge can be subsequently used for a wide range of possible applications of the kit.
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SW development and testing for engine monitoring module
Sumtsov, Artem ; Sova, Václav (referee) ; Krejsa, Jiří (advisor)
Diplomová práce popisuje vývojovou techniku Model Based Design a její použití pro návrh a testování algoritmů. Popis této techniky je proveden na příkladu praktického využití v praxi při vývoji modulu monitorování stavu motoru ve spolupráci se společností UNIS,a.s. Vývoj v oblasti současné letecké techniky klade velký důraz na monitorování životnosti zařízení. Podle výstupů algoritmu se dají naplánovat preventivní opravy s ohledem na aktuální podmínky opotřebení a provozování. Implementace algoritmů je provedena v prostředí Matlab/Simulink s následným testováním na platformě dSpace
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Adaptive Control of Electromechanical Actuators using Multiple Model Adaptive Feed forward Compensator
Sova, Václav ; Křivánek,, Václav (referee) ; Krejsa, Jiří (referee) ; Grepl, Robert (advisor)
This thesis deals with the derivation of novel adaptive feed forward compensator, which will be used for the control of the electromechanical actuators used in automotive industry. The electromechnical actuators are an electronic throttle valve and an EGR valve. The introduced adaptive compensator is derived from an existing multiple model feedback control method. This work describes the derivation of this method and simulation and experimental verification. In addition, the most well known digital filter differentiators are presented and summarized in this paper because the feed forward compensator needs them for its operation. From these filters, one specific is chosen, whoose coefficients for the specific setting leads to integer multiplication and an integer implementation of the filter. This will be used to implement this filter to the FPGA and then we prove, that this implementation saves a lot of FPGA resources compared to filters implemented using fixed or floating-point arithmetic.
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HIL Simulation of Electronic Throttle
Maliszewski, Michal ; Chalupa, Jan (referee) ; Sova, Václav (advisor)
This thesis deals with the Hardware in the Loop (HIL) simulation of an electronic throttle. In the following text its mathematical model for different options of friction and hardstops is deduced. Model parameters were obtained by measurement on the real throttle. In the next step the thesis aims on designing the suitable control algorithm, which is used for own HIL simulation. The output of the thesis is the choice of the best model with respect to accuracy and computation time of the simulation.
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Recognizing of the gesture, based on data from accelerometer, used to control a car model
Zermegh, Tomáš ; Sova, Václav (referee) ; Lamberský, Vojtěch (advisor)
This project deals with the usage of development kit Chronos ez430 to demonstrate fundamental movements based on the recognition of gestures. Recognition of basic gestures for movements (forward, stop, backwards and turning) is the fundamental part of the work which is based on formulating algorithm. The formulating of algorithm for data processing runs under Matlab/Simulink. The algorithm is converted into the C language and with the help of Code Composer Studio is integrated into kit Chronos ez430.
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