Gyroscopes are devices used to sense rotation and are typically used in inertial navigation of objects and vehicles, particularly when reliance on a magnetic compass is insufficient or not possible. Mechanical gyroscopes, the simplest and most common type of gyroscope, are typically quite large. Additionally, they are sensitive to shock and vibration, can have poor reliability due to fabrication tolerances, and experience mechanical wear over time. This makes them suboptimal for applications requiring small size and high accuracy, such as in aircraft, missiles, and satellites. Ring laser gyroscopes (RLG), which sense changes in orientation by exploiting the Sagnac effect, are more suitable for these applications due to their compactness and lack of moving parts. However, they suffer from frequency lock-up, which prevents them from sensing small rotations below a certain threshold. Therefore, there is a need for a ring laser gyroscope that does not exhibit frequency lock-up at low rotation rates.
|United States Of America||Issued Patent||10,180,325||01/15/2019||2016-772|
Coupling, Sensing, Gyroscope, Ring Laser Gyroscope, Orthogonal, Frequency Lock-up, Rotation, Optical Signals