MEASUREMENT METHOD OF DYNAMIC CHARACTERISTICS OF QUARTZ PENDULUM ACCELEROMETER (VERSIONS) Russian patent published in 2014 - IPC G01P21/00 G01V13/00 

FIELD: measurement equipment.

SUBSTANCE: sine calibration signals U_c are supplied to one of the points of a closed loop of an accelerometer. Output offset signal U_offset and output signal U_output of a feedback device is measured for the whole required range of frequencies and amplitudes of signals U_c, and as per the ratio of their amplitudes to the amplitude of signal U_c, dynamic characteristics of the accelerometer are determined. As per the first version, signal U_c is supplied to a force sensor either through a reference load or through an additional input of a power amplifier of a digital feedback device, thus attaching a free output of the reference load to a common bus, and signals U_offset and U_output are measured on the side of the outputs of the following elements of the digital feedback device: an amplifier-convertor and an integro-differentiating amplifier. As per the second version, signal U_c is supplied to the force sensor through the reference load, and signal U_output is measured on the side of the output of the integro-differentiating amplifier of the feedback device and supplied to an active filter, from the output of which output signal $$U_{output}^{*}$$ is measured. Signal U_offset is measured on the side of the output of the amplifier-converter of the feedback device.

EFFECT: improving measurement accuracy of dynamic characteristics of an accelerometer.

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