Chinese Journal of Lasers B, 1999, 8 (2): 131, 网络出版: 2006-08-08  

Laser Alignment Techniques for Simultaneously Measuring Five Degree-of-freedom Deviations of the Object

Laser Alignment Techniques for Simultaneously Measuring Five Degree-of-freedom Deviations of the Object
作者单位
State Key Lab. of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China
摘要
Abstract
An optical measurement system has been developed for the simultaneous detection for five degree-of-freedom (DOF) deviations of the object. The measuring system designed bases on laser holographic technique, laser alignment technique, laser drift compensation technique and magneto-optic modulating technique where a single laser beam is used as datum line. This measuring system is applied to multiple degree-of-freedom alignment and measurement of fine deviation, and it carries out the automatic testing in a deformation of machine tool, or the loaded axon in a strain wind tunnel balance. Through actual calibration and measurement, the resolution of the system is estimated to be 4 μm for linear displacement error measurement and better than 2″ for angular error measurement with a 1 m offset between laser and a photoelectric receiving target.

ZHOU Fuqiang, SUN Changku, WANG Chunhe, YE Shenghua. Laser Alignment Techniques for Simultaneously Measuring Five Degree-of-freedom Deviations of the Object[J]. Chinese Journal of Lasers B, 1999, 8(2): 131. ZHOU Fuqiang, SUN Changku, WANG Chunhe, YE Shenghua. Laser Alignment Techniques for Simultaneously Measuring Five Degree-of-freedom Deviations of the Object[J]. 中国激光(英文版), 1999, 8(2): 131.

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