Three-axis accelerometer calibration platform based on planar air bearing decoupling device
A technology of air bearing and decoupling device, which is applied in the direction of speed/acceleration/shock measurement, measurement device, speed/acceleration/shock measurement equipment testing/calibration, etc. It can solve the problems of low calibration efficiency and low calibration accuracy, and achieve No pollution to the environment structure, good decoupling effect, improved calibration accuracy and calibration efficiency
Active Publication Date: 2019-02-01
TAIYUAN UNIV OF TECH
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[0003] The purpose of the present invention is to solve the technical problems of low calibration accuracy and low calibration efficiency existing in the calibration of the existing three-axis accelerometer, and to provide a three-axis accelerometer calibration platform based on a planar air bearing decoupling device
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[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0019] Such as Figure 1-3 As shown, the three-axis accelerometer calibration platform based on the planar air bearing decoupling device includes a base 1, three vibrators 2A, 2B, 2C vertically distributed in space, a workbench 4, a clamping bracket 6 and three A laser interferometer 7A, 7B, 7C; three exciters 2A, 2B, 2C are fixed on the base 1 by bolts, and the clamping bracket 6 is fixed on the workbench 4 by bolts, wherein: it also includes three plane air Bearing decoupling devices 3A, 3B, 3C, three laser interferometers 7A, 7B, 7C are used to measure the movement in three directions of the calibrated triaxial accelerometer 5; three planar air bearing decoupling devices 3A, 3B, 3C Installed on the workbench 4 and respectively connected with the three exciters 2A, 2B, 2C.
[0020] The plane air bearing decoupling device includes a magnet ...
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The invention discloses a triaxial accelerometer calibration station based on plane air-bearing decoupling apparatuses. The calibration station includes the following steps: using the plane air-bearing decoupling apparatuses in the X, Y, and Z directions to form static pressure supporting gas films between a plane air-bearing and the table top of a workbench so as to reduce friction, vibration exciters in the X, Y, and Z directions conducting simultaneous excitation, completing motion decoupling by the 3 plane air-bearing decoupling apparatuses, pushing the work bench to move simultaneously in the X, Y, and Z directions. According to the invention, the triaxial accelerometer calibration station produces excitation simultaneously in three directions which are mutually perpendicular to one another, enables integrated installation, and simultaneously calibrates sensitivity in the X, Y, and Z directions and crossed sensitivity among directions, and has relatively wide input acceleration range.
Description
technical field [0001] The invention relates to a three-axis accelerometer calibration platform based on a plane air bearing decoupling device. Background technique [0002] Calibrating a triaxial accelerometer is an essential link in the use and development of a triaxial accelerometer. At present, the calibration method of the three-axis accelerometer mainly uses the calibration method of the single-axis accelerometer to calibrate each axis of the three-axis accelerometer in sequence. However, this method can only obtain the sensitivity of the three-axis accelerometer in one direction, but the cross-sensitivity reflecting the coupling degree between the sensitive axes cannot be obtained, and when using this method for calibration, the three-axis accelerometer needs to be clamped three times, not only Time-consuming, and there are installation errors every time the card is installed, and the calibration accuracy is low. Therefore, it is of great practical significance to s...
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IPC IPC(8): G01P21/00
CPCG01P21/00
Inventor 熊晓燕郝惠敏武兵韩晓红兰媛权龙张俊唐建
Owner TAIYUAN UNIV OF TECH