Mechanical response of outer frames in tuning fork gyroscope model with connecting diamond-shaped frame

Abstract

In tuning fork micro-gyroscopes, two outer frames are connected indirectly or directly by using the linking elements. Their driving vibration should be exactly opposite to cause the opposite sensing modes in the direction perpendicular to driving one. These opposite driving vibrations are obtained by using a mechanical structure named the diamond-shaped frame. This paper reports mechanical responses of two outer frames in a proposed model of tuning fork gyroscope when an external force with different types is applied to them. The results show that the presence of a diamond-shaped frame guarantees the absolute anti-phase mode for the driving vibrations of outer frames.