Development and tests of model sample of inclinometer based on pendulum accelerometer with autocompensation mode

This paper is devoted to the construction and operation of precision inclinometer with the automatic compensation of bias, and also presents the results of prototype studies. The inclinometer is intended for use in laboratory conditions to control the movement of surfaces on which the calibration and testing of sensitive elements of navigation systems is carried out. According to this task, the inclination measurement range for each axis is ±600 arc sec. The sensitive element of the inclinometer is a pendulum accelerometer of compensating type. The rotating platform allows performing two-axis measurements and also provides auto-compensation of the sensitive element bias during long-term operation of the inclinometer. On the basis of a series of experimental data, the instability of the inclinometer during long-term operation (about 15 hours) was analyzed, so the error contributed by the rotating platform drive was assessed and the operation of sensitive elements with different ranges of acceleration measurement was compared.