基于多准直光的六自由度测量方法

吕勇; 冯其波; 刘立双; 耿蕊; 吴思进

基于多准直光的六自由度测量方法

1.
北京交通大学理学院,北京 100044;
2.
北京信息科技大学仪器科学与光电工程学院,北京 100192

基金项目:

北京市自然科学基金(3144028)

详细信息

作者简介:
吕勇(1971-),男,教授,主要从事精密光电检测技术方面的研究.Email:lvyong@bistu.edu.cn

中图分类号: TH741

Six-degree-of-freedom measurement method based on multiple collimated beams

1.
School of Science,Beijing Jiaotong University,Beijing 100044,China;
2.
School of Instrumentation Science &Opto-electronics Engineering,Beijing Information &Science Technology University,Beijing 100192,China

摘要: 提出了一种利用三个CCD探测三路准直光束位置以实现被测物六自由度测量的方法.测量系统包括两部分:一个反射镜和通过连接杆连接的两个CCD为移动部分,固接在被测物上;固定部分的光源、光开关和三个光学准直器产生三路准直光束.其中两路分别投射到两个CCD上,第三路经移动部分的反射镜反射回并由第三个CCD探测.被测物发生六自由度变化时,移动部分同步变化,三个CCD探测的光斑位置也随之变化,通过特定算法可解算出被测物六自由度运动.构建了一个可以表征六自由度测量特性的四自由度测量系统.测量结果表明:在相应测量范围内,与双频激光干涉仪或光电自准直仪测量值相比,系统偏摆角最大差值为1.27,滚转角最大偏差为1.03,两个平动位移最大偏差均小于1 m.
- 测量 /
- 六自由度 /
- 准直光
Abstract: Using 3 CCDs to detect the position changes of 3 collimated beams, a six-degree-of-freedom measurement method was presented. The measurement system consisted of two parts. A mirror and two CCDs that were connected together by a link rod form the moving part. It was fixed to and moving along with the measured object. A light source, an optical switch and three optical collimators of the fixed part emitted 3 collimated beams. Two collimated beams projected on two CCDs respectively. The third one was reflected back by the mirror and captured by the third CCD. Six-degree-of-freedom motion of the measured object led to the synchronous change of the moving part, resulting in position changes of 3 light spots on CCDs. Then with a set of algorithms, the six-degree-of-freedom motion of the measured object can be calculated based on these position changes. A four-degree-of-freedom measurement system, which can manifest the characteristics of six-degree-of-freedom measurement, was built and experimental tests were carried out. Within the corresponding measurement range, compared with the results of the dual-frequency laser interferometer and photoelectric auto-collimator system, the maximum deviations of yaw and roll in this system are 1.27 and 1.03, and that of two translational movements are less than 1 m.
- measurement /
- six-degree-of-freedom /
- collimated beam

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基于多准直光的六自由度测量方法

作者简介:
吕勇(1971-),男,教授,主要从事精密光电检测技术方面的研究.Email:lvyong@bistu.edu.cn

Six-degree-of-freedom measurement method based on multiple collimated beams

计量

基于多准直光的六自由度测量方法

1. 北京交通大学理学院,北京 100044;

2. 北京信息科技大学仪器科学与光电工程学院,北京 100192

作者简介:
吕勇(1971-),男,教授,主要从事精密光电检测技术方面的研究.Email:lvyong@bistu.edu.cn

English Abstract

Six-degree-of-freedom measurement method based on multiple collimated beams

1. School of Science,Beijing Jiaotong University,Beijing 100044,China;

2. School of Instrumentation Science &Opto-electronics Engineering,Beijing Information &Science Technology University,Beijing 100192,China

全文HTML

目录

留言板

基于多准直光的六自由度测量方法

作者简介: 吕勇(1971-),男,教授,主要从事精密光电检测技术方面的研究.Email:lvyong@bistu.edu.cn

Six-degree-of-freedom measurement method based on multiple collimated beams

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出版历程

基于多准直光的六自由度测量方法

1. 北京交通大学 理学院,北京 100044; 2. 北京信息科技大学 仪器科学与光电工程学院,北京 100192

作者简介: 吕勇(1971-),男,教授,主要从事精密光电检测技术方面的研究.Email:lvyong@bistu.edu.cn

English Abstract

Six-degree-of-freedom measurement method based on multiple collimated beams

1. School of Science,Beijing Jiaotong University,Beijing 100044,China; 2. School of Instrumentation Science &Opto-electronics Engineering,Beijing Information &Science Technology University,Beijing 100192,China

全文HTML

目录

作者简介:
吕勇(1971-),男,教授,主要从事精密光电检测技术方面的研究.Email:lvyong@bistu.edu.cn

1. 北京交通大学理学院,北京 100044;

2. 北京信息科技大学仪器科学与光电工程学院,北京 100192

作者简介:
吕勇(1971-),男,教授,主要从事精密光电检测技术方面的研究.Email:lvyong@bistu.edu.cn

1. School of Science,Beijing Jiaotong University,Beijing 100044,China;

2. School of Instrumentation Science &Opto-electronics Engineering,Beijing Information &Science Technology University,Beijing 100192,China