The goal of this project is to realize a micro rate-integrating gyroscope that produces an output signal proportional to rotation angle rather than rotation rate. This device would eliminate the need of integrating the gyroscope's rate output to obtain the angle. Gyroscope resonators have at least two resonant modes that can be coupled by Coriolis force. Difference in damping coefficients and stiffness of the resonant modes of the MEMS resonator known as anisodamping and anisoelasticity are main sources of error in RIG. So realizing a micro rate-integrating gyroscope can be achieved by having highly symmetrical gyroscopes with extremely close frequency matching (delta f < 1 Hz) and high time constant (high quality factor). Control algorithms should be developed to eliminate the residual anisodamping and anisoelasticity errors.
Project end date: 08/15/17