Calibration method and server for inertial set and turntable installation error of aerospace vehicle
A technology of installation error and calibration method, applied in the field of aerospace vehicles, can solve the problems of complex guarantee conditions, inability to control the installation error angle, limited use scenarios, etc., to shorten the calibration time, simplify the equipment guarantee conditions, and improve the calibration accuracy. Effect
Active Publication Date: 2021-11-09
BEIJING LANDSPACETECH CO LTD
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[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.
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[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...
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The invention provides an inertial group and turntable installation error calibration method for aerospace vehicles and a server. Firstly, the turntable is successively placed in three different positions to perform inertial group acceleration output acquisition, and the collected data is used to calculate respectively. The output average acceleration of the Y-axis and Z-axis. According to the collected and calculated data, the zero position deviation calibration of the inertial group Y-direction accelerometer and Z-direction accelerometer is carried out, and at the same time, the calibration calculation of the installation error of the inertial group measurement system around the Y-axis and Z-axis of the turntable is completed, and finally the collected data and the Z-axis are used. The calculated zero position deviation and the local gravitational acceleration value are used for the calibration calculation of the installation error of the inertial group measurement system around the X-axis of the turntable. The invention can obtain accurate installation error through auxiliary calculation without using external auxiliary means such as optical aiming, and quickly complete the high-precision calibration of the installation error between the inertial group and the turntable.
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...
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IPC IPC(8): G01C25/00
CPCG01C25/005
Inventor 赵向楠
Owner BEIJING LANDSPACETECH CO LTD