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How can we design an active gyroscope that is more accurate and stable? 


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To design an active gyroscope that is more accurate and stable, several methods can be employed. One approach is to use a servomotor-aided calibration method, which minimizes the maximum variance of estimated scale factors and biases, resulting in improved accuracy . Another method is to mechanically dither the gyroscope, which overcomes the lock-in region limitation and enhances the detection of angular increments . Additionally, compensating for error sources and selecting a gyro with good mechanical performance can improve bias stability . Another option is to use a gyroscope stable holder, which provides a stable state and enables precise orientation control, allowing for improved stability and performance . Finally, an optical gyroscope with rare-earth doped waveguides and a crossing element can offer accurate and stable measurements .

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To design a more accurate and stable gyroscope, one can average multiple devices to improve bias stability and reduce broadband noise. Vibration rejection capabilities should also be considered during gyro selection.
The paper describes an active waveguide optical gyroscope that uses rare-earth doped waveguides and a crossing element for improved accuracy and stability.
Patent
Guofu Qu, Jie Wu, Zhe Ren 
26 Sep 2012
8 Citations
The gyroscope stable holder described in the paper provides a stable state and allows for any orientation control, resulting in accurate and stable performance.
The paper presents a design method for a mechanically dithered gyroscope, which improves accuracy and stability by overcoming frequency coupling limitations.
The paper presents an efficient calibration method for a triaxial gyroscope that significantly increases its accuracy.

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