Realization method of calibration system of strapdown inertial measurement unit based on Labview

Abstract

A realization method of a calibration system of a strapdown inertial measurement unit based on Labview comprises seven steps: 1, arrangement of parameter, 2, controlling of a rotary table, 3, data acquisition, 4, data storage, 5, calibration and solving, 6, verification of calibration results, and 7, display and function of calibration interface. The method improves an automation degree of the calibration of the inertial measurement unit, saves labor and time needed by the calibration experiment, guarantees reliability of the data acquisition and the controlling of the rotary table, and timing accuracy, and has relatively good practical value and broad application prospects in the technical field of inertial navigation.

Description

technical field [0001] The invention relates to a method for realizing a strapdown inertial group calibration system based on Labview. The method is applied in inertial navigation and can effectively improve navigation accuracy, and belongs to the technical field of inertial navigation. Background technique [0002] Calibration technology is a testing technology used to determine the main performance parameters of inertial measurement components, and is essentially an error compensation technology. The inertial measurement components of the strapdown inertial navigation system include gyroscopes and accelerometers, which are the most critical components in the system hardware. The acceleration of the accelerometer sensitive carrier and the attitude angular rate of the gyroscope sensitive carrier are directly related to the performance of a system. series of performance indicators. The error of the inertial group is the main factor affecting the accuracy of the inertial syst...

AI Technical Summary

Problems solved by technology

[0006] 1) The turntable needs to be operated by the experimenter himself;

[0007] 2) Experimenters need to keep saving and recording the output data of inertial devices;

[0009] 4) Each calibration experiment will consume a lot of time

[0011] 1) The development cycle of automatic calibration software based on VC and other languages ​​is long;

[0012] 2) The program code is cumbersome, which increases the difficulty of programming;

[0013] 3) It is very difficult for users of automatic calibration software to make necessary changes to the calibration software during the calibration process of various inertial groups;

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