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Angle of arrival calculation methods for localization using UWB technology
Žaludek, Ivo ; Klusáček, Stanislav (referee) ; Havránek, Zdeněk (advisor)
The thesis describes UWB technology, compares available hardware platforms and describes UWB localization methods. The practical part compares the methods of calculating the angle of arrival from the phase difference of signal arrival on the two-element antenna array. The calculation is performed using the analytically obtained arc sine function and also using the look-up table and the polynomial function. The content of the look-up table and the coefficients of the polynomial function are based on the measured characteristics of the UWB receiver (anchor). The best result was obtained using the look-up table. More accurate results were obtained when the phase difference of arrival values were averaged.
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Comparison of methods for identification of rolling bearing failures
Kokeš, Miroslav ; Hnidka,, Jakub (referee) ; Klusáček, Stanislav (advisor)
The aim of this master thesis is the comparison of selected methods and parameters for roller bearings diagnostics. Selected statistical parameters are kurtosis, crest factor, and parameter K(t). The other selected methods are envelope analysis, cepstral analysis, and ACEP method. These methods are implemented in LabVIEW software and compared based on noise resistance, computation speed, and overall capability of identifying roller bearing faults.
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Analytical workplace for gas valves
Skočík, Pavel ; Havránek, Zdeněk (referee) ; Klusáček, Stanislav (advisor)
This work deals with the measurement of parameters of different types of gas control valves, of a assembling measuring workplace and development of a program for a complex control system consisting of the Siemens acquisition boards and software resources LabVIEW. The program stores the values of inlet and outlet pressure, flow, time or modulation current into a text file. The timing and number of samples can be changed. Outlet pressure versus time or modulation current is displayed on the monitor chart.
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Engine simulator - HW development
Starosta, Michal ; Hutyra, Tomáš (referee) ; Klusáček, Stanislav (advisor)
STAROSTA, Michal . ENGINE SIMULATOR – HARDWARE SUGGESTION. Bachelor’s thesis. Brno: University of Technology, Faculty of electrical engineering and communication, 2009. 51 s., Supervisor.: Ing. Stanislav Klusáček. This work describes suggestion of concept of simulator of jet egine for purposes of testing control unit for this engine FADEC. There are described possibilities of software and hardware facilities for simulator realization. Possibilities of software facilities are mainly focused on Matlab / Simulink program to communicate in real time with card for data acquisition.
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Workplace for final testing of electronic transformers
Brýdl, Ondřej ; Fiala, Pavel (referee) ; Klusáček, Stanislav (advisor)
This article describes a complex suggestion for automatic tester machine for final testing of electronic transformers. There is also described universal device for measuring all types of transformers which are produced by ABB company. The main parameters of testing process are price, speed of measuring and high-quality measuring. The suggestion of the machine is optimized according to those parameters.
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Thermocouple simulator
Nermut, Martin ; Michalec, Jaroslav (referee) ; Klusáček, Stanislav (advisor)
NERMUT, M. Thermocouple simulator. Brno: Brno University of Technology, Faculty of Eletrical Engineering and Communication. 2009. 62 s. Supervisor Ing. Stanislav Klusáček. Consultant Ing. Miroslav Krupa, - IDC Brno, Honeywell s.r.o. The aim of the thesis is design and realization of handheld thermocouple simulator, suitable both for laboratory and plant use. Manual or remote control via RS232 are possible. Special attention is focused on universality, easy and safety use (galvanic isolation), properly cold junction compensation, easy calibration of non-linearity. Sponsor: IDC Honeywell, Brno, Czech Republic Basic literature: - OMEGA Temperature Handbook) - Datasheets of OMEGA instruments (www.omega.com) - Datasheets of other vendor instruments (www) - Isotech Traceable Book – Temperature Calibrabration (www.isotech.co.uk) - BELZA J., Buld-in Li-ion accu charger (www.belza.cz) Appendixs: - User manual - Schematic - Calibration data - CD (source code)
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Methods of Technical Diagnostics
Klusáček, Stanislav ; Ďaďo, Stanislav (referee) ; Němec, Zdeněk (referee) ; Tůma, Jiří (referee) ; Bejček, Ludvík (advisor)
The main objective of the presented thesis is to contribute to the development of diagnostic methods for piezoelectric sensor testing. The thesis describes the methods for piezoelectric sensors microcracks identification and diagnostics. The core of the thesis presents the development of a knock sensor prototype, design of suitable methods for the knock sensors diagnosis and evaluation of developed methods with focus on detection of microcracks in the sensor piezoceramic. The last part of the thesis deals with the influence of cracks and splits on the measured data from the piezoelectric transducer. The presented methods are focusing on impedance measurements and sensors frequency response measurements. Known properties of used piezoelectric material as an information source for measurement and diagnosis are provided. The main result of the work is the evaluation of the methods developed for the piezoelectric sensors self-diagnosis.
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Instrument driver for two-channel waveform generator Aim-TTi TG501xA series
Opravil, Michal ; Klusáček, Stanislav (referee) ; Čala, Martin (advisor)
The bachelor thesis deals with designing and describing of instrument driver for generator Aim-TTi TG501xA series in LabVIEW development environment. In the thesis is defined the structure and requirements for creating of instrument driver for Aim-TTi TG5012A generator. Therein are also mentioned the parameters and advantages of the generator. To meet the requirements for the instrument driver the functions were defined, thereby generator may be controlled over USB or LAN. The other supplied functions are determined to generate all available signals and set their parameters. The validity of parameters set are examined by the function for monitoring of set-up that reads the data from error register of the generator and verifies the correctness of the adjustment of parameters. All functions uses the NI VISA libraries containing the functions for communication and functions providing read and write support for the device. All created functions were tested on generator TG5012A communicating via USB and LAN. For better comprehension, there is a set of examples given demonstrating the involvement and applicability of each function.
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Control unit of aircraft engine - development HW and motherboard
Dušek, Martin ; Dolák, Petr (referee) ; Klusáček, Stanislav (advisor)
This bachelor's thesis describes development proccess of aircraft (BLDC) motor control unit. Possible methods of sensorless control are proposed, introduced and compared. The most suitable one is used to control the motor. The development process itself explains selection of components used in the circuit of the unit, theirs important parameters and the purpose of using it in the circuit. Created control unit is tested for its ability to control the motor and for a power capability.
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Measurement of noise characteristics of MEMS accelerometers
Mihaľko, Juraj ; Klusáček, Stanislav (referee) ; Beneš, Petr (advisor)
The aim of this bachelor`s thesis was to determine noise static parameters of MEMS accelerometers. It is a limiting parameter for the activity with them. If the manufacturer gives the values of MEMS accelerometers noise compare them with measured values. The work contains comparison the noise of cards and determines which is better suited to measuring chain for measuring noise. Noise of the MEMS accelerometers was measured in static mode. Next step was to propose measurement setup for evaluation noise parameters of MEMS accelerometers in dynamic mode. For evaluation noise in dynamic mode was used new card. The possibility of using this measurement setup was verified. In dynamic mode were noise of three MEMS accelerometers in axis Z measured and one three-axis accelerometer in all three axis.
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