Vibrating Structure Gyroscopes from Eigenvalue Perturbations Perspective.
Erdal Yilmaz (AEP, Cornell)

In 1890, Bryan demonstrated that when a ringing wine glass is rotated, the shape of the vibration precesses. This takes place because of the splitting of a degenerate eigenvalue due to gyroscopic effects. This observation is the basis for vibrating structure gyroscopes. The rate integrating feature of these gyros make them very attractive and miniaturizing them is an ongoing challenge. We have developed a finite element simulation framework to analyze and optimize device characteristics. In the talk, I will show the interpretation of precession rate as an eigenvalue perturbation. I will also talk about the wet etching simulations we performed.