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Abstract

A method for characterizing Coriolis gyros, in the case of which the interaction of the system comprising force transmitters, a mechanical resonator and excitation/readout vibration pick-offs is represented as a discretized, coupled system of differential equations. The variables of the system of equations represent the force signals supplied by the force transmitters to the mechanical resonator and the readout signals produced by the excitation/readout vibration pick-offs. The coefficients of the system of equations contain information relating to the linear transformation which maps the force signals onto the readout signals. The coefficients are determined by measuring force signal values and readout signal values at different instants and substituting them into the system of equations. The system of equations is numerically resolved in accordance with the coefficients, and the coefficients are used to infer undesired bias properties of the Coriolis gyro which corrupt the rate of rotation of the Coriolis gyro.

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