| A laser shaft alignment system with dual PSDs |
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| 作者姓名： | JIAO Guo-hua LI Yu-lin ZHANG Dong-bo LI Tong-hai HU Bao-wen |
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| 作者单位： | JIAO Guo-hua1，2，LI Yu-lin1，ZHANG Dong-bo3，LI Tong-hai1，HU Bao-wen1 (1Xi’an Institute of Optics and Precision Mechanics of CAS，Xi’an 710068，China) (2Graduate School of the Chinese Academy of Sciences，Beijing 100039，China) (3The 16th Institute of CATEC，Xi’an 710100，China) |
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| 基金项目： | Project (No. 60337030) partly supported by the National NaturalScience Foundation of China |
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| 摘 要： | INTRODUCTION Precise alignment occurs when the centerlines of rotation of two shafts are essentially collinear with each other. The degree to which two machines are misaligned can be determined by examining the amount of offset and angularity that exists between them. Offset is the distance between the two rota- tional centerlines, and angularity is the angle between the centerlines created by the misalignment of the two centerlines. The traditional precise shaft alignment method is dial …
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| 关 键 词： | 旋转电机 轴对中 激光准直 位置检测器 PSD |
| 收稿时间： | 2006-03-03 |
| 修稿时间： | 2006-07-06 |
A laser shaft alignment system with dual PSDs |
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| Guo-hua Jiao,Yu-lin Li,Dong-bo Zhang,Tong-hai Li,Bao-wen Hu.A laser shaft alignment system with dual PSDs[J].Journal of Zhejiang University Science,2006,7(10):1772-1776. |
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| Authors: | Guo-hua Jiao Yu-lin Li Dong-bo Zhang Tong-hai Li Bao-wen Hu |
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| Institution: | (1) Xi’an Institute of Optics and Precision Mechanics of CAS, Xi’an, 710068, China;(2) Graduate School of the Chinese Academy of Sciences, Beijing, 100039, China;(3) The 16th Institute of CATEC, Xi’an, 710100, China |
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| Abstract: | Shaft alignment is an important technique during installation and maintenance of a rotating machine. A high-precision laser
alignment system has been designed with dual PSDs (Position Sensing Detector) to change traditional manual way of shaft alignment
and to make the measurement easier and more accurate. The system is comprised of two small measuring units (laser transmitter
and detector) and a PDA (Personal Digital Assistant) with measurement software. The laser alignment system with dual PSDs
was improved on a single PSD system, and yields higher measurement accuracy than the previous design, and has been successful
for designing and implements actual shaft alignment. In the system, the range of offset measurement is ±4 mm, and the resolution
is 1.5 μm, with accuracy being less than 2 μm.
Project (No. 60337030) partly supported by the National Natural Science Foundation of China |
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| Keywords: | Rotating machine Shaft alignment Laser alignment Position sensing detector (PSD) Laser micro-displacement measurement |
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