METHOD calibration of piezoelectric accelerometers at low frequencies AND DEVICE FOR ITS IMPLEMENTATION

摘要

1. A method of calibrating a piezoelectric accelerometer at lower frequencies, which consists in that the accelerometer is rotated in the earth's gravitational field with the turntable and measured by the measuring circuit output voltage of the accelerometer, characterized in that the pre-mounted on the turntable with its axis accelerometer sensitive in the vertical plane at any angle to the horizontal axis, is combined center of mass of the inertial accelerometer element with rotation axis by changing the rotational speed , An accelerometer is rotated through an angle of more than 360 ° at each frequency, determining maximum values ​​of the output signals on each of the frequencies at which the transform coefficients is determined for the construction of the amplitude-frequency characteristics of the accelerometer in the low chastot.2. Pivoting device comprising a base on which mounted by supports rotating platform, wherein the platform consists of a shaft and a nozzle having a horizontal surface for attaching a test accelerometer, and the nozzle is movable in a plane perpendicular to the axis of the shaft, on the end faces shaft applied grid for fixing their relative position in the coupling plane.