A universal electronics approach for Rate Integrating Gyroscopes

We present a novel electronics method of operation of a Coriolis Vibratory Rate Integrating Gyroscope (RIG) that corrects or compensates all sources of asymmetry with sufficient precision and low front-end electronic noise to yield milli-arc-second/rt-Hz angle noise and minimum rate error only limited by mechanical thermal noise. This method enables complete RIG self-calibration with zero rate input and yields zero rate bias for low fixed rate measurement e.g., earth rate and supports wideband analog control or highly precise digital control. The method provides ideal RIG performance, excellent scale factor, wide bandwidth, electronics suitable for ASIC implementation, and is anticipated to be suitable for emerging navigation grade MEMS gyroscopes and may surpass current state-of-the-art Rate Gyro (RG) operation.