基于光纤光栅的温度触觉粗糙度识别方法

Recognition Method of Temperature Tactile Roughness Based on Fiber Bragg Grating

为对物体表面不同粗糙度进行辨别,采用光纤光栅(FBG)为核心传感原件构建触觉传感器,将其埋置于硅橡胶中进行温度触觉传感识别;分析了粗糙度对温度传感的影响并进行实验验证。实验结果表明,此方法可以用于粗糙度识别。对于金属物体,收敛时间t_(end)=399.8 s时,温度-粗糙度灵敏度K_(Ra)=0.019 9℃/μm;对于非金属物体,收敛时间t_(end)=299.8 s时,温度-粗糙度灵敏度K_(Ra)=0.012 0℃/μm。此方法可应用于触觉传感领域,有广阔的应用前景。

In order to distinguish the different roughness of the object surface, Fiber Bragg Grating(FBG) is used as the core sensing element to construct a tactile sensor. It is embedded in silicone rubber for recognition of the temperature tactile sensor. The influence of roughness on temperature sensing is analyzed and verified by experiments, and results show that this method can be used for roughness recognition. For metal objects, when the convergence time t_(end)=399.8 s, the temperature-roughness sensitivity K_(Ra)=0.019 9 ℃/μm. For non-metallic objects, when the convergence time t_(end)=299.8 s, the temperature-roughness sensitivity K_(Ra)=0.012 0 ℃/μm. This method can be applied to the field of tactile sensing and has a broad application prospect.