Analytical Evaluation and Compensation Method of Coaxiality Error of Active Semi-strapdown System
A compensation method and active technology, applied in the direction of navigation, measuring devices, instruments, etc. through speed/acceleration measurement, can solve the problems that affect the overall structural strength, stability, and accuracy of anti-rotation accuracy of the active semi-strapdown system
Inactive Publication Date: 2016-09-28
ZHONGBEI UNIV
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] In order to solve the problem that the coaxiality error of the active semi-strapdown system affects the overall structural strength, stability, derotation accuracy, and measurement accuracy of the active semi-strapdown system, the present invention provides an active semi-strapdown system Analytical Evaluation and Compensation Method of Coaxiality Error
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0044] An active semi-strapdown system coaxiality error analysis evaluation and compensation method, the method is realized by the following steps:
[0045] 1) Analytical evaluation of the coaxiality error of the outer cylinder of the active semi-strapdown system; specifically, the following steps are included:
[0046] 1.1) Install the active semi-strapdown system on the two tops of the dividing head, and ensure that the central axis of the outer cylinder base of the active semi-strapdown system coincides with the axis of the rotating shaft of the dividing head; place the center of the outer cylinder base The axis is used as the reference axis of the outer cylinder;
[0047] 1.2) Assuming that the height of the base of the outer cylinder is h, divide the base of the outer cylinder into sampling sections; for each sampling section of the base of the outer cylinder, the dividing head performs sampling once every 5° rotation, and a total of 72 samples are taken; assuming that ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a half-strapdown inertial measurement technology, and in particular relates to a coaxial error analysis evaluation and compensation method of an active type half-strapdown system, aiming at solving the problems that the whole structure strength, the stability, the less spin accuracy and the measurement accuracy of the active type half-strapdown system are influenced by the coaxial error of the active type half-strapdown system. The coaxial error analysis evaluation and compensation method of the active type half-strapdown system is realized by adopting the steps of (1) analyzing and evaluating the coaxial error of an outer cylinder of the active type half-strapdown system; (2) carrying out dynamic calibration and compensation on the coaxial error angle of an inner cylinder of the active type half-strapdown system; and (3) unifying the reference axis of the active type half-strapdown system. The coaxial error analysis evaluation and compensation method is suitable for the accurate measurement of high spin ammunition flight attitude.
Description
technical field [0001] The invention relates to a semi-strapdown inertial measurement technology, in particular to an active semi-strapdown system coaxiality error analysis evaluation and compensation method. Background technique [0002] The precise measurement of the flight attitude of high-spin ammunition is one of the cores of the research on the spin ammunition, and it is also the basis of the guidance of the munition. When the high-spin ammunition is flying, the rotational speed along the axial direction of the projectile is extremely high, generally up to 20r / s, or even higher. In such a high-speed environment, the traditional strapdown inertial measurement method is difficult to maintain a high attitude measurement accuracy in a high-speed environment. Simply relying on improved algorithms to improve test accuracy has limited effects and cannot meet the accuracy requirements of modern combat. The proposal of the active semi-strapdown micro-inertial measurement syste...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00
CPCG01C21/16G01C25/005
Inventor 李杰张樨刘俊秦丽范建英张晓明郭涛马喜宏唐军张松景增增
Owner ZHONGBEI UNIV