Modalno posodabljanje s pomočjo hitre kamere

Zaletelj, Klemen (author), Slavič, Janko (mentor), Boltežar, Miha (comentor)

Modalno posodabljanje z uporabo pospeškomerov je relativno dobro raziskano, a je merjenje velikega števila prostostnih stopenj lahko zamudno in včasih nemogoče. Hitra kamera omogoča merjenje velikega števila prostostnih stopenj hkrati, zato je tak pristop primeren za uporabo v postopku posodabljanja. Predstavili smo teoretično ozadje uveljavljenih metod za posodabljanje in njihovo delovanje prikazali na numeričnih primerih. Za prikaz postopkov na realnih problemih smo izvedli eksperiment v laboratoriju. Rezultati so pokazali, da je posodabljanje s pomočjo hitre kamere učinkovito in primerljivo s klasičnim pristopom pri posodabljanju manjšega števila parametrov.

• Language: Slovenian
• Keywords: modalno posodabljanje, hitra kamera, strukturna dinamika, optični tok, iterativne metode, direktne metode
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Publisher: [K. Zaletelj]
• Year: 2017
• PID: 20.500.12556/RUL-94847
• UDC: 531.776(043.2)
• COBISS.SI-ID: 15693083
• Publication date in RUL: 08.09.2017

ZALETELJ, Klemen, 2017, Modalno posodabljanje s pomočjo hitre kamere [online]. Master’s thesis. K. Zaletelj. [Accessed 29 March 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=94847

Secondary language

• Language: English
• Title: High-speed camera modal updating

Abstract

Modal updating using accelerometers is relatively well researched, however measuring large numbers of degrees of freedom can be time consuming and sometimes impossible. With the use of high-speed cameras, it is possible to measure those large amounts of coordinates simultaniously. This fact makes the approach appropriate for use in modal updating. In the first sections, the theoretical background of well-established methods is presented and their use is demonstrated on numerical examples. Use of updating methods on more realistic examples is shown on experiment carried out in laboratory. The high-speed camera approach was found to be effective and comparable with classical approach, when applied to small number of updating parameters.

• Keywords: modal updating, high-speed camera, structural dynamics, optical flow, iterative methods, direct methods