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Test method for frame angle accuracy of fixed base of three-floating platform system

A technology of precision testing and frame angle, which is used in navigation, measuring devices, instruments, etc. through velocity/acceleration measurement. It can solve problems such as incompleteness, many frame angle testing points, and frequent manual testing, so as to achieve high cost and avoid measurement errors. , the effect of low efficiency

Active Publication Date: 2021-07-09
BEIJING INST OF AEROSPACE CONTROL DEVICES
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Problems solved by technology

[0005] The technical solution problem of the present invention is: to overcome the deficiencies in existing technical realizations such as testing on the turntable, many and incomplete frame angle testing points, frequent manual testing, and testing time, and provide a fixed base frame angle accuracy of the three-floating platform system testing method

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  • Test method for frame angle accuracy of fixed base of three-floating platform system

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Embodiment Construction

[0036] The present invention will be further described below in conjunction with accompanying drawing.

[0037] Such as figure 1 Shown, concrete steps of the present invention are as follows:

[0038] (1) Put the platform on the marble table. The platform cable is connected to the transfer box between the platform body and the circuit box. The installation direction of the platform body is as follows: figure 2 shown;

[0039] Marble countertops require foundation isolation and the level of the countertop within 1′. figure 2 The X-axis frame angle, the Y-axis frame angle, and the Z-axis frame angle respectively correspond to the frame angles of the outer ring axis, the follower axis and the platform axis in the present invention.

[0040] (2) Power on the constant current source, set the output current of the constant current source to -40mA (reference value), and stabilize for 30 minutes;

[0041] (3) The platform is powered on sequentially, and the corners of each frame...

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Abstract

The invention discloses a method for testing the angular accuracy of a fixed base frame of a three-floating platform system. (1) Put the platform on the horizontal platform of the isolated foundation, the levelness is within 1′, and the cable between the platform body and the circuit box is connected to the transfer box; (2) Power on the constant current source and set the constant current The size of the output current of the source, so that the indexing speed of the outer ring shaft, the follower shaft, and the table body shaft is between 0° / s and 10° / s, and stabilized for a certain period of time; The shaft frame angle is locked to 0°, and wait for a certain period of time to make the frame angle output reach a stable state; (4) Manually disconnect the platform torque input channel on the transfer box, and manually connect the constant current source torque plus input channel , the constant current source input is connected to the moment input point of each frame angle, and the output of the entire circle of the outer ring shaft, the follower shaft and the table body axis is recorded; (5) use the Fit the linear straight line, and calculate the maximum value of the residual error of each circle, which is the accuracy of each frame angle.

Description

technical field [0001] The invention relates to a platform type navigation system in the field of inertial technology, and is suitable for the angular accuracy test of a fixed base frame of a three-floating platform system. Background technique [0002] The inertial platform system will be stable in the inertial space during the working process, but in the preparation process before work and the ground test and test process, it is necessary to control the rotation of each frame angle, that is, to rotate each frame axis so that the output of the angle sensor is a predetermined value. The frame angle accuracy test results are particularly important to the test results, and determine the accuracy of the platform bomb. [0003] In the existing frame angle testing method, the platform needs to be placed on the turntable, and the accuracy of the platform is determined by the angle difference between the platform and the turntable at various positions. [0004] The shortcomings of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C25/00G01C21/18
CPCG01C21/18G01C25/00
Inventor 王蕾刘毕炎万少巍
Owner BEIJING INST OF AEROSPACE CONTROL DEVICES
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