This thesis presents System Identification based On-Line Health Monitoring to analyse the dynamic behaviour of the Switch-Mode Power Converter (SMPC), detect, and diagnose anomalies in passive electronic components. The anomaly detection in this research is determined by examining the change in passive component values due to degradation. Degradation, which is a long-term process, however, is characterised by inserting different component values in the power converter. The novel health-monitoring capability enables accurate detection of passive electronic components despite component variations and uncertainties and is valid for different topologies of the switch-mode power converter. The need for a novel on-line health-monitoring capability is driven by the need to improve unscheduled in-service, logistics, and engineering costs, including the requirement of Integrated Vehicle Health Management (IVHM) for electronic systems and components. The detection and diagnosis of degradations and failures within power converters is of great importance for aircraft electronic manufacturers, such as Thales, where component failures result in equipment downtime and large maintenance costs. The fact that existing techniques, including built-in-self test, use of dedicated sensors, physics-of-failure, and data-driven based health-monitoring, have yet to deliver extensive application in IVHM, provides the motivation for this research ... [cont.].

This bachelor's thesis aims to implement a wave propagation experiment on Field-Programmable Gate Array to detect the signal strength at pre-defined frequencies for use in sounding rocket experiments. This includes the choice of suitable components such as analog to digital converters, filters, voltage regulators, and amplifiers. The board prototype was designed by keeping in mind the need for a miniaturized solution that would still provide the wanted results, by following design guidelines. The second part of the project involves the design of the software in a hardware description language. An analysis in MATLAB® was done to determine the parameters needed to successfully reconstruct the transmitted signal on the receiver, while still being able to fit on the given FPGA. To make sure of that, a simulation was performed on ModelSim a tool for simulation and debugging for VHDL. From the simulations, it can be concluded that this design is feasible and that this project gives the basis for further development, to create a viable solution for a wave propagation experiment with a miniaturized payload. / Denna kandidatuppsats syftar till att implementera ett vågutbredningsexperiment på Field-Programmable Gate Array för att detektera signalstyrkan vid fördefinierade frekvenser för användning i sonderingsraketexperiment. Detta inkluderar val av lämpliga komponenter som analog till digital omvandlare, filter, spänningsregulatorer och förstärkare. Kortprototypen designades genom att ha i åtanke behovet av en miniatyriserad lösning som fortfarande skulle ge önskat resultat, genom att följa designriktlinjerna. Den andra delen av projektet involverar design av programvaran i ett hårdvarubeskrivningsspråk. En analys i MATLAB® gjordes för att bestämma parametrarna som behövs för att framgångsrikt rekonstruera den sända signalen på mottagaren, samtidigt som den fortfarande kan passa på den givna FPGA. För att säkerställa det gjordes en simulering på ModelSim ett verktyg för simulering och felsökning för VHDL. Från simuleringarna kan man dra slutsatsen att denna design är genomförbar och att detta projekt ger grunden för vidareutveckling, för att skapa en hållbar lösning för ett vågutbredningsexperiment med en miniatyriserad nyttolast. / Kandidatexjobb i elektroteknik 2022, KTH, Stockholm