Ground velocity projection component error self-calibration method of ring laser angle measuring device

A self-calibration, laser technology, used in measuring devices, instruments, etc., can solve problems such as angle measurement errors, reduce errors, reduce noise, and improve product reliability and ease of use.

Active Publication Date: 2017-08-11
XIAN FLIGHT SELF CONTROL INST OF AVIC
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Problems solved by technology

However, the ring laser angle measuring device senses the angular velocity relative to the inertial coordinate system. Therefore, the above included angle

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  • Ground velocity projection component error self-calibration method of ring laser angle measuring device
  • Ground velocity projection component error self-calibration method of ring laser angle measuring device
  • Ground velocity projection component error self-calibration method of ring laser angle measuring device

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[0031] The present invention will be further explained below in conjunction with the drawings:

[0032] See also figure 1 , figure 2 , image 3 The hardware part of the method for self-calibration of the ground velocity projection component error of the ring laser angle measuring device of the present invention includes a ring laser angle measuring device, a circle induction synchronizer, a transition plate, a synchronous sampling circuit and a processor, among which, the ring laser angle measuring device and The circular induction synchronizer is installed on both sides of the transition board, and both are connected with the synchronous sampling circuit, and the synchronous sampling circuit is connected with the processor. The ground velocity projection component error self-calibration method of the ring laser angle measuring device of the present invention adopts the least square method to fuse the angle information from the circle induction synchronizer installed on the mea...

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Abstract

The invention belongs to the ring laser technique for measuring angles, and relates to a ground velocity projection component error self-calibration method of a ring laser angle measuring device. The method includes the steps that by using a least square method, the angle information from a circle inductosyn arranged on a measured turntable is combined with the angle information from the ring laser angle measuring device, and by using discrete treatment separating, error terms are separated, so as to eliminate the angle measuring errors introduced by the ground velocity projection component. The ring laser angle measuring device has the advantages that the accuracy is high in a short time and the angle errors of the turntable do not diverge with the time, and by using the advantages adequately, the measuring errors caused by the ground velocity projection component can be reduced successfully, thereby obtaining the angle and angular velocity information with higher accuracy and smaller noise.

Description

technical field [0001] The invention belongs to the ring laser angle measurement technology, and relates to a method for self-calibrating the ground speed projection component error of a ring laser angle measurement device. Background technique [0002] Angle measurement is an important part of geometric measurement technology, especially high-precision dynamic angle calibration. For example, in the fields of CNC machine tools, high-precision turntables, satellite antennas, and remote telescopes, there are situations that require both static positioning accuracy and stability. Rotational dynamics, that is, the problem of angular position accuracy at relatively high rates of rotation. Previously, the high-precision measurement of the characteristics of the turntable usually uses an optical code disc or a method based on an autocollimator, but the former has limited accuracy and cannot measure the dynamic characteristics of angular rotation, while the latter has a small angle ...

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Application Information

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IPC IPC(8): G01C25/00
CPCG01C25/00
Inventor 傅鑫陈林峰曹耀辉梁可王继良王京献
Owner XIAN FLIGHT SELF CONTROL INST OF AVIC
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