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Inertial measurement unit full-scale acceleration calibration method based on centrifugal table

A technology of inertial measurement unit and centrifugal acceleration, which is applied in the testing/calibration of speed/acceleration/shock measuring equipment, speed/acceleration/shock measurement, measuring devices, etc., to achieve the effect of reasonable and feasible calibration method and reduce the requirements of the test site

Pending Publication Date: 2022-01-18
西安航天三沃机电设备有限责任公司
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  • Abstract
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Problems solved by technology

However, this is only suitable for products with small range or low precision requirements for large-scale data. If high-precision large-scale data is required, the results of using traditional methods are not ideal.

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  • Inertial measurement unit full-scale acceleration calibration method based on centrifugal table
  • Inertial measurement unit full-scale acceleration calibration method based on centrifugal table
  • Inertial measurement unit full-scale acceleration calibration method based on centrifugal table

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Embodiment Construction

[0019] In order to make the objects, technical solutions, and advantages of the present invention, the technical solutions of the present invention will be described in detail below. Obviously, the described embodiments are merely the embodiments of the invention, not all of the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without paying creative labor, all of the present invention.

[0020] like figure 1 As shown, a centrifuge-based inertial measuring unit full scale acceleration standard method, first step: static three-axis standard and decoupling; second step: from the hexagonal 零 零 零 零 零; Uniaxial full range calibration. The present invention performs simulation calculation based on the MATLAB platform, and the use of the self-developed inertial measuring unit is trial on the centrifuge.

[0021] Among them, the inertial measuring unit is an important part of the missile, which is based on the bui...

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Abstract

The invention relates to the field of measurement, and particularly discloses an inertial measurement unit full-scale acceleration calibration method based on a centrifugal table, the method comprises the following steps: 1, performing static three-axis calibration and decoupling; 2, performing zero position buckling and normalizing in the direction of the centrifugal table 6; and 3, performing single-axis full-scale calibration. According to the invention, simulation calculation is carried out based on the MATLAB platform, and test verification is carried out on a centrifugal table by using a self-developed inertial measurement unit. According to the invention, the full-scale output precision of the accelerometer of the product can be greatly improved.

Description

Technical field [0001] The present invention relates to an inertial measuring unit, and a method of calibrating a full range of inertial measuring unit accelerometers. Background technique [0002] The inertial measuring unit is a fundamental measuring element based on the gyroscope and accelerometer, wherein the gyroscope sensitive carrier relative to the angular velocity of the inertial space, providing measurement reference for accelerometers by angular rate compensation and integral operation; accelerometer sensitive vector relative inertia The linear motion information of the space is compensated by the coordinate transform and acceleration to obtain the acceleration of the carrier relative to the Earth, and the speed and position of the carrier is calculated by integration. [0003] In the production process, the inertial measuring unit needs to solve the accelerometer three-axis accuracy problem, which involves the problem of three-axis plus coupling characteristics and un...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C25/00G01P21/00
CPCG01C25/005G01P21/00
Inventor 米秀秀许晨光王梦楠张云淙刘淼
Owner 西安航天三沃机电设备有限责任公司