Title :
Study on Measurement Errors of Position Sensor with Two-Dimension Holographic Variable Line-Space Plane Gratings
Author :
Lou, Jun ; Liu, Bin ; Fu, Shao J.
Author_Institution :
Nat. Synchrotron Radiat. Lab., Univ. of Sci. & Technol. of China, Hefei
Abstract :
In recent years, a new fiber optic position sensing technology with holographic variable line-space (VLS) plane grating is developed. The period of VLS plane grating is about less than 10 micron. The grooves of the holographic VLS plane grating are not straight in general. Due to the grooves bend of 2-D holographic VLS plane gratings, measurement errors of the position sensor are inevitable when the scanning direction of a position sensor isn´t in the symmetry axis of a VLS plane grating. This work briefly describes the theoretical background to the position sensor concept and the geometry theory of holographic VLS gratings. We report a theoretical analysis of the measurement errors in two basic cases: translation deviation and rotation deviation. The proposed method has been applied to examples of computer simulation. The results obtained are quite noteworthy.
Keywords :
fibre optic sensors; geometry; measurement errors; position measurement; computer simulation; geometry theory; measurement errors; position sensor; rotation deviation; scanning direction; translation deviation; two-dimension holographic variable line-space plane gratings; Computer simulation; Diffraction gratings; Equations; Fiber gratings; Holography; Measurement errors; Optical fiber sensors; Optical fibers; Optical sensors; Sensor systems; VLS grating; measurement error; position sensor;
Conference_Titel :
Nano/Micro Engineered and Molecular Systems, 2006. NEMS '06. 1st IEEE International Conference on
Conference_Location :
Zhuhai
Print_ISBN :
1-4244-0139-9
Electronic_ISBN :
1-4244-0140-2
DOI :
10.1109/NEMS.2006.334602
