Inertial measurement unit and turntable installation error calibration method for aerospace vehicle and server
A technology of installation error and calibration method, applied in the field of aerospace vehicles, can solve the problems of limited use scenarios, complex guarantee conditions, and inability to install error angle control, etc., to improve calibration accuracy, simplify equipment guarantee conditions, and shorten calibration time. Effect
Active Publication Date: 2021-02-26
BEIJING LANDSPACETECH CO LTD
View PDF9 Cites 2 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The guarantee conditions of the current inertial group and turntable installation error calibration method are relatively complicated, and the use scenarios are limited. When the inertial group product or turntable has no mechanical installation guarantee and optical reference mirror, it is impossible to control or calibrate the installation error angle.
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
[0049] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods. Spatially relative terms such as "below", "beneath", "under", "lower", "above", "on", "higher", etc. are used to facilitate description to explain the relative The orientation of two elements means that these terms are intended to encompass different orientations of the device in addition to orientations other than those shown in the figures. In addition, for example, "one element is on / under another element" may mean that two elements are in direct contact, or that there are other elements between the two elements. In addition, terms such as "first", "second", etc. are also used to describe various elements, regions, sections, etc. and should not be taken as limitations. Similar terms refer to similar elements throughout the description.
[0050] The invention provides an installation error calibra...
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 provides an inertial measurement unit and rotary table installation error calibration method for an aerospace vehicle and a server, wherein the method comprises the steps: enabling a rotary table to sequentially carry out the inertial measurement unit acceleration output collection at three different positions, and respectively calculating the Y-axis and Z-axis output average accelerations at different positions through the collected data; performing zero deviation calibration of the inertial measurement unit Y-direction accelerometer and the inertial measurement unit Z-directionaccelerometer according to the collected and calculated data, and performing calibration calculation of installation errors of the inertial measurement unit measurement system around the Y axis and the Z axis of the rotary table at the same time, and finally carrying out calibration calculation on the mounting error of the inertial measurement system around the X axis of the turntable by utilizing the collected data, the calculated zero deviation and local gravitational acceleration values. According to the method, under the condition that external auxiliary means such as optical aiming are not used, the accurate installation error can be obtained in an auxiliary calculation mode, and high-precision calibration of the installation error between the inertial measurement unit and the rotarytable is rapidly completed.
Description
technical field [0001] The invention relates to the technical field of aerospace vehicles, in particular to a method for calibrating installation errors of inertial sets and turntables used in aerospace vehicles and a server. Background technique [0002] At present, when conducting inertial navigation system testing and control system hardware-in-the-loop simulation tests, it is necessary to install the inertial group on a high-precision turntable, and simulate the attitude change of the rocket body through the rotation of the turntable. The inertial group is sensitive to the rotation of the turntable to complete the relevant tests. test. In order to ensure that the three coordinate axes of the inertial measurement coordinate system are consistent with the rotation coordinate axes simulated by the turntable, the following measures are usually taken: [0003] The use of mechanical installation guarantee requires that the inertial group and the turntable installation table b...
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 Applications(China)
IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 赵向楠
Owner BEIJING LANDSPACETECH CO LTD