Rotational rate comparator for a fiber optic gyroscope with a 3. times.3 coupler

摘要

A rotational rate comparator for a fiber optic gyroscope has a 3. times.3 coupler and an evaluating computer to calculate the rotational rate from photodiode signals generated by the fiber optic gyroscope. An electrical circuit is provided that is independent of the evaluating computer, and embodies an algorithm for producing at least one signal that depends on the rotational rate as a function of the photodiode signals. When the rotational rate dependent signal exceeds at least one presettable limiting value the comparator supplies an output signal.