光学精密工程2024，Vol.32Issue(17)：2718-2731,14.DOI:10.37188/OPE.20243217.2718
基于应变增敏的双层十字型FBG触觉感知单元
Double-layer cross-type FBG tactile sensing unit based on strain sensitization
摘要
Abstract
Tactile perception is an important content of bionic intelligent perception,in order to improve the tactile sensitivity of fiber Bragg grating(FBG),combined with the demand of tactile perception of the fingertip of the machine,this paper proposes a strain-enhanced FBG tactile perception unit.Firstly,based on the analysis of strain sensitisation and tactile perception mechanism,a double-layer cross-type FBG tac-tile sensing unit based on strain sensitisation is designed,and a rigid spherical multi-point sensitisation structure is used for strain sensitisation;Then,the simulation analysis method was used to optimise the FBG spatial distribution and perform hydrostatic and thermodynamic simulations of the sensing unit.Final-ly,a haptic perception experiment platform was built,and temperature-force haptic synergistic perception experiments were completed in conjunction with a robotic hand.The simulation and experimental results show that the force haptic sensitivity of FBG1 and FBG2 are 18.069 nm/MPa and 1.065 nm/MPa,and the temperature sensitivity are 11.256 pm/℃ and 11.153 pm/℃.The tactile sensing unit effectively im-proves tactile sensing sensitivity with good linearity and repeatability.关键词
光纤传感/光纤布拉格光栅/应变增敏/双层十字型/触觉感知单元Key words
optical fiber sensing/Fiber Bragg Grating(FBG)/strain sensitisation/double layer cross type/tactile sensing unit分类
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孙世政,何江,秦鸿宇,徐向阳,陈仁祥..基于应变增敏的双层十字型FBG触觉感知单元[J].光学精密工程,2024,32(17):2718-2731,14.基金项目
国家自然科学基金青年科学基金资助项目(No.52105542) （No.52105542）
重庆市自然科学基金创新发展联合基金资助项目(No.CSTB2023NSCQ-LZX0081) （No.CSTB2023NSCQ-LZX0081）
重庆市教育委员会科学技术研究项目(No.KJZD-K202200705) （No.KJZD-K202200705）
重庆市技术创新与应用发展专项重大项目(No.CSTB2023TIAD-STX0016) （No.CSTB2023TIAD-STX0016）
