Optomekanik sistemlerdeki titreşim etkilerini azaltmak için sıralı model güncelleme yöntemi kullanarak yapısal değişimler

It is required to have high image performance in optomechanical systems working under excessive vibrations. The motivation of this thesis is to increase the optical performance of an optomechanical system which is exposed to high vibration levels coming from the platform. In order to eliminate high vibrations affecting the optical element of an optomechanical system, design modifications can be made, which requires a reliable mathematical model of the system. In this thesis, a new approach, which is named Sequential Model Updating Method, is developed and used for modeling and updating the FE model of an optomechanical system simultaneously, since the methods in the literature are found to be inadequate for systems composed of not only substructures, but also several moving parts. Using the updated FE model, structural modifications on a selected part can be carried out to eliminate the undesired vibrations. The application of the method developed for model updating, and the structural modification of a selected part to minimize vibrations of the optical element are shown on a problematic optomechanical system. The results obtained show the performance of the method developed.