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12 January 2018 Relative position calibration of multi-LDS in shaft center measurement system
Lei Wang, Zhong Wang, Luhua Fu, Yan Zhao, Changjie Liu
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Proceedings Volume 10621, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems; 106211F (2018) https://doi.org/10.1117/12.2295009
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China
Abstract
In the center measuring device consisting of a plurality of laser triangular displacement sensors (LDS) for coaxiality measurement of shaft, it fits the center coordinate of the shaft by obtaining the coordinates of the outer contour, this poses a higher requirement for the relative position calibration accuracy of the multi-LDS. Aiming at the positional relationship between multi-LDS, the CMM is leaded into the calibration of the center measuring device. Randomly moves a standard column and reading the length values of multi-LDS, combined with the known center coordinates of the column from CMM, to establish the over-determined nonlinear equations, the angle and starting position of the laser beam of each LDS in the measuring device are calculated. The experiment result indicates that measuring uncertainty of the system is 30 μm, this proved the validity and feasibility of the multi-LDS center measuring device in the use of coaxiality measurement of shaft. As a result, it is found that the proposed calibration method is accuracy to the multi-LDS center measuring device and can be implemented easily.
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Lei Wang, Zhong Wang, Luhua Fu, Yan Zhao, and Changjie Liu "Relative position calibration of multi-LDS in shaft center measurement system", Proc. SPIE 10621, 2017 International Conference on Optical Instruments and Technology: Optoelectronic Measurement Technology and Systems, 106211F (12 January 2018); https://doi.org/10.1117/12.2295009
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KEYWORDS
Calibration
Error analysis
Optical simulations
Inspection
Instrument modeling
Lithium
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