Acta Photonica Sinica, Volume. 48, Issue 9, 906001(2019)
Slip Sensing Unit Using Optical Fiber Bragg Grating
A slip sensing unit based on cantilever structure is developed. The Bragg wavelength shifts of three fiber Bragg gratings and variance of the wavelength difference are used to predict whether slip happens or not, so that the fluctuation of the contact force, the sliding rate and direction can be detected. The experimental results show that the proposed slip sensing unit can detect micro slip within the range of 0.2~1 N of the contact force, whose minimum sensitivity is 3.8 pm/mm. The average relative errors between the experimental value and the theoretical value are 6%, 14% and 6.6% for the slip sensitivity, the slip speed coefficient and the contact force, respectively.
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FENG Yan, WANG Feiwen, ZHANG Hua, XIAO Jiaming, HU Ronghua. Slip Sensing Unit Using Optical Fiber Bragg Grating[J]. Acta Photonica Sinica, 2019, 48(9): 906001
Received: Apr. 4, 2019
Accepted: --
Published Online: Oct. 12, 2019
The Author Email: Yan FENG (fengyan76@ncu.edu.cn)