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Comparison of long-term stability of AM versus FM gyroscopes | IEEE Conference Publication | IEEE Xplore

Comparison of long-term stability of AM versus FM gyroscopes


Abstract:

A vibrating ring gyroscope is operated in AM and FM mode to demonstrate improved long-term stability of FM operation. Both bias and scale-factor (SF) accuracy were tested...Show More

Abstract:

A vibrating ring gyroscope is operated in AM and FM mode to demonstrate improved long-term stability of FM operation. Both bias and scale-factor (SF) accuracy were tested over a one-month period with devices power cycled between measurements. Bias and SF improve by more than two orders-of-magnitude from 335mdps to 2.86mdps and from 518ppm to 4.31ppm in the AM and FM modes, respectively. The temperature coefficients decrease from over 700dph/°C to less than 3dph/°C for the bias and 105ppm/°C to 1.25ppm/°C for the SF. The in-run bias improves from 19dph to less than 1.5dph. AM and FM tests use the same transducer with no additional trimming, demonstrating the fundamental advantage of FM over AM readout.
Date of Conference: 24-28 January 2016
Date Added to IEEE Xplore: 29 February 2016
ISBN Information:
Conference Location: Shanghai, China

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