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Method for calibrating direction of three-probe start sensor

A calibration method and three-probe technology, applied in measurement devices, instruments, etc., can solve problems such as high accuracy requirements, failure to meet calibration accuracy requirements and measurement accuracy requirements, focusing errors, etc.

Inactive Publication Date: 2011-04-27
郑州辰维科技股份有限公司 +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0004] Due to the high measurement accuracy requirements, the common collimation measurement method, due to the use of focusing measurement, is prone to focus errors, which cannot meet the calibration accuracy requirements and measurement accuracy requirements.

Method used

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  • Method for calibrating direction of three-probe start sensor
  • Method for calibrating direction of three-probe start sensor
  • Method for calibrating direction of three-probe start sensor

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Experimental program
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Embodiment Construction

[0011] The specific embodiment of the present invention will be described in detail below in conjunction with the flowchart.

[0012] Depend on figure 2 Shown, the present invention is in concrete implementation, and three cube mirrors Za, Zb, Zc are combined mutually two by two earlier, promptly cube mirror Za, Zb, cube mirror Za, Zc, three-dimensional mirror Zb, Zc are combined into three mutually. Group, first connect the four theodolites online, and then use the four theodolites to collimate the two cubic mirrors combined with each other at the same time, and then aim at each other two by two, solve the rotation matrix between the two reference cube mirrors, specifically Achieved by the following steps:

[0013] 1. Let 3 cubic mirrors be Za, Zb, Zc respectively, and 4 theodolites be T 1 , T 2 , T 3 , T 4 , put the three-probe Xingmin in a fixed position, do not move, and use 4 theodolites to align the 3 cubic mirrors that are collimated in pairs, that is, use 4 theod...

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PUM

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Abstract

The invention relates to a method for calibrating the direction of a three-probe start sensor, which can effectively solve the problem of requirements on the calibrating accuracy and measuring accuracy of the direction of the three-probe start sensor. The technical scheme for solving the problem comprises the following steps of: combining three cubic prisms pairwise; linking four theodolites; aligning the every two combined cubic prisms by using the four theodolites respectively and recording data; performing mutual aiming; recording mutual aiming data; and resolving a rotation matrix between two reference cubic prisms. The method is easy and convenient to operate, has high calibration speed and high accuracy, does not need to focus for measuring and can effectively solve the problem of requirements on the calibrating accuracy and measuring accuracy of the direction of the three-probe start sensor.

Description

1. Technical field [0001] The invention relates to industrial measurement, in particular to a three-probe star-sensitive pointing calibration method. 2. Background technology [0002] The three-probe star sensor is composed of three star sensor probes. There is a reference cube mirror on each probe of the star sensor (such as figure 1 ), each star-sensitive measurement coordinate system is restored by a cubic mirror installed on it, and the design value of the angle between the Z-axis of each star-sensitive measurement coordinate system is about 60°. In order to ensure the accuracy, the calibration of the conversion matrix between each star-sensitive measurement coordinate system must be carried out in each process of manufacturing and testing. [0003] The three-probe star-sensitive pointing calibration system consists of a three-probe star sensor, a three-probe star-sensitive pointing calibration measurement software, and four theodolites connected to form a measurement ...

Claims

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Application Information

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IPC IPC(8): G01C25/00
Inventor 李春艳张丽华王京海卢欣范生宏陈小娅范钦红
Owner 郑州辰维科技股份有限公司
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