Centrifuge working radius calibration method, system and accelerometer calibration method
A technology of accelerometer and working radius, which is applied in the testing/calibration of speed/acceleration/shock measurement equipment, speed/acceleration/shock measurement, instruments, etc., and can solve the problem of low precision of working radius of centrifuge
Active Publication Date: 2020-04-07
CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST
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[0005] Based on this, it is necessary to provide a centrifuge working radius calibration method, system and accelerometer calibration method for the problem of low accuracy of the centrifuge working radius measured in the traditional technology
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[0041] In order to further explain the technical means adopted by the present invention and the effects obtained, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings and preferred embodiments.
[0042] figure 1 It is a schematic structural diagram of a double centrifuge in an embodiment, as figure 1 As shown, the linear acceleration turntable of the double centrifuge is composed of a main centrifuge 101 and a slave centrifuge 102, and the slave centrifuge 102 is installed on the turntable or the rotating arm of the main centrifuge 101, and the main centrifuge 101 and the slave centrifuge 102 The turntables are all parallel to the ground.
[0043] The acceleration signals generated from the centrifuge 101 and the main centrifuge 102 can be used as input to calibrate the accelerometer to be calibrated.
[0044] figure 2 It is a schematic flow chart of a method for cal...
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The invention relates to a centrifugal machine working radius calibration method and system and an accelerometer calibration method. The centrifugal machine working radius calibration method comprisesthe following steps: acquiring an initial zero value of an accelerometer; horizontally mounting the accelerometer on a slave centrifugal machine of double centrifugal machines, wherein a sensitive axis of the accelerometer is arranged on a connecting line between the center of a main centrifugal machine and the slave centrifugal machine; starting the main centrifugal machine; adjusting the position of the slave centrifugal machine until an output value of the accelerometer is equal to the initial zero value; recording the rotating angle of the slave centrifugal machine relative to the main centrifugal machine at the moment; and calibrating the working radius of the centrifugal machines according to the rotating angle and the center distance between the main centrifugal machine and the slave centrifugal machine. The working radius of the centrifugal machines can be calibrated accurately without depending on an accelerometer output model and accelerometer scale factor related performance.
Description
technical field [0001] The invention relates to the technical field of instrument detection, in particular to a centrifuge working radius calibration method, system and accelerometer calibration method. Background technique [0002] Accelerometers are instruments that measure the acceleration of a carrier and are widely used in commercial electronics, industry, aerospace, and military. In the development, production and use of accelerometers, it is necessary to test the performance indicators of the accelerometers for calibration and calibration. Generally, the scale factor-related index test of the accelerometer (range greater than 1g) is completed by a centrifuge. [0003] The centrifuge uses the centrifugal acceleration as the input of the accelerometer to realize the test of the related indicators of the accelerometer scale factor, such as the calibration of the scale factor, the asymmetry of the scale factor and the calibration of the non-linear test of the scale facto...
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IPC IPC(8): G01P21/00G01B21/10
CPCG01B21/10G01P21/00
Inventor 董显山黄钦文肖庆中恩云飞
Owner CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST