| 摘要 |
A gyroscope control circuit for a vibratory gyroscope system having a resonator mass and an accelerometer for generating a Coriolis output rate signal. The circuit includes an open-loop resonator signal path control circuit, configured to drive the resonator mass based on a resonator sense signal without use of amplitude information, and a closed-loop Coriolis signal path control circuit, configured to produce the Coriolis output rate signal based on a Coriolis sense signal and providing a feedback signal to the accelerometer based on the Coriolis sense signal. The gyroscope control circuit optionally may include a Q compensation circuit to compensate for variations in gyroscope sensitivity due to variations in resonator signal path Q. The resonator signal path and the Coriolis signal path may have transduction factors that are proportional to each other such that sensitivity of the gyroscope varies directly with resonator signal path quality factor Q. |
