Investigation on Model Based Observers for SpaceStructure Load Characterization
Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
The experimental determination of dynamic characteristics of elastic structures, in particularof space flight related structures typically is performed by experimental modal analysis(EMA) or output-only modal analysis (OMA). This document is focused on the OMA methodsand state-space modelling, the motivation for this approach is the possibility to monitorthe real loading of a structure in order to provide a loading history which may be used foran assessment of safe remaining life once the dynamic characteristics has been determined. Previous work has demonstrated that Extened Kalman Filter is not sufficient in thecase when the forces are unkown and the only resource available are the responses of thestructure. In this research a new method called Unscented Kalman Filter is investigated andimplemented, proving its capability to obtain a better approximation of the elastic structurebehaviour and a correction of the modal parameters.
Place, publisher, year, edition, pages
2016. , 67 p.
Kalman, Unscented, Structures, Model, Characterization, Space
IdentifiersURN: urn:nbn:se:ltu:diva-60732OAI: oai:DiVA.org:ltu-60732DiVA: diva2:1050166
IABG; Julius Maximilians Universität Würzburg
Space Engineering, master's level
Grillenbeck, Anton, DoctorSchilling, Klaus, DoctorEjemalm, Johnny, Dr