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BLDC motor control using LabView FPGA
Ruhás, Sándor ; Pohl, Lukáš (referee) ; Blaha, Petr (advisor)
This thesis focuses on BLDC motor control algorithms with model based design approach. Models and control algorithms were programmed in LabView, the NI MyRIO was used as a hardware platform. For hall-sensor feedback controlled application an already finished power inverter was used from a Honeywell rotary actuator. For sensor-less motor control an indirect sensing of BEMF signal is applied using motor phase current measurement. The time-critical parts of the algorithms are programmed for FPGA, the non-time-critical parts are programmed for LabView Real-Time module.
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Analysis of SMART Material Usage in case of Active Vibration Sensing
Rabčan, Jakub ; Věchet, Stanislav (referee) ; Hadaš, Zdeněk (advisor)
This diploma thesis deals with the possibility of vibration sensing and vibrodiagnostics based on the use of so-called "SMART" materials such as piezoelectric layers or structures. Research studies have examined the general overview of vibrodiagnostic methods and their analysis of the possibility of sensing vibration by piezoelectric structures. This was followed by measuring and evaluating the results using various vibro-diagnostic methods. The results were compared with those obtained by sensing vibration using an accelerometer. We also dealt with the problem of detecting the deformation of the device by sensing vibration with piezoelectric structures. The last part was programming the "Myrio" to capture and evaluate the vibration using Labview.
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Continuous Data Acquisition By Myrio Used For Measurement Of Polarization Transient Effects
Dejdar, Petr
The paper describes the design and development of a universal software for communication with the myRIO device, which is used for data acquisition from the optical fiber sensing system detects vibrations. Specifically, it is a system using polarized light passing through an optical fiber and the subsequent calculation of the rotation change of the polarization of light. The device from National Instruments myRIO is used to obtain values from four photodetectors of polarimeter. This is a cost-effective system for analysing fast polarization rotation changes from four photodetectors. Finally, the paper deals with the use of a liquid crystal based polarization controller to set the initial polarization of the laser and use the component for measurement of polarization in time.
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Analysis of SMART Material Usage in case of Active Vibration Sensing
Rabčan, Jakub ; Věchet, Stanislav (referee) ; Hadaš, Zdeněk (advisor)
This diploma thesis deals with the possibility of vibration sensing and vibrodiagnostics based on the use of so-called "SMART" materials such as piezoelectric layers or structures. Research studies have examined the general overview of vibrodiagnostic methods and their analysis of the possibility of sensing vibration by piezoelectric structures. This was followed by measuring and evaluating the results using various vibro-diagnostic methods. The results were compared with those obtained by sensing vibration using an accelerometer. We also dealt with the problem of detecting the deformation of the device by sensing vibration with piezoelectric structures. The last part was programming the "Myrio" to capture and evaluate the vibration using Labview.
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BLDC motor control using LabView FPGA
Ruhás, Sándor ; Pohl, Lukáš (referee) ; Blaha, Petr (advisor)
This thesis focuses on BLDC motor control algorithms with model based design approach. Models and control algorithms were programmed in LabView, the NI MyRIO was used as a hardware platform. For hall-sensor feedback controlled application an already finished power inverter was used from a Honeywell rotary actuator. For sensor-less motor control an indirect sensing of BEMF signal is applied using motor phase current measurement. The time-critical parts of the algorithms are programmed for FPGA, the non-time-critical parts are programmed for LabView Real-Time module.
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