Abstract
This paper uses the method of calculating the reliability of Coriolis vibrating gyroscope, based on an analysis of effects of external stress factors on the device and calculation the accelerated degradation coefficients. Methodic to calculate mean time between failures with the use of accelerated degradation coefficients is presented. To calculate the coefficients of accelerated degradation the following models were used: Arrenius model for high temperature, Coffin-Manson model for thermocycle and Holberg-Peck model for humidity. First, the failure rate and mean time between failures in operation of the gyro under normal conditions are computed and then, on the basis of these estimates, reliability parameters for the instrument in other environmental conditions are calculated with the use of environmental factors pE for specific operating conditions. As a result, the mean time between failures of Coriolis vibratory gyroscope with a metal resonator under normal operating conditions is 2,509,145 hours.
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