Tapered Polymer Whiskers to Enable Three-Dimensional Tactile Feature Extraction
Tapered Polymer Whiskers to Enable Three-Dimensional Tactile Feature Extraction
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DOI：
10.1089/soro.2019.0055
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发表时间：
2020-06-08
期刊：
影响因子：
7.9
通讯作者：
Brinson, Lynda Catherine
中科院分区：
文献类型：
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作者：
Collinson, David W.;Emnett, Hannah M.;Brinson, Lynda Catherine
许多哺乳动物用触须来探索周围的环境。触须是细长的锥形结构，它将机械信号传递给位于每个触须基部的卵泡中的大量机械感受器（传感器）。最近的一项研究表明，如果须是锥形的，在底部的三个机械信号就足以确定须与物体接触的三维位置。然而，从材料和制造的角度来看，制造仿生锥形晶须具有挑战性。本研究开发并表征了一种人造须，用于感觉输入装置的一部分，该装置是生物大鼠须神经感觉系统的仿生学。提出了一种新的制造工艺，即表面符合纤维拉伸（SCFD），以生产符合生物大鼠触须机械和几何模拟要求的人造触须。测试人工晶须的感官能力表明，与以前的非锥形长丝相比，性能有所提高。scfd制造的锥形晶须显示出预测接触点位置的能力，中间距离误差为0.47 cm。
Many mammals use their vibrissae (whiskers) to tactually explore their surrounding environment. Vibrissae are thin tapered structures that transmit mechanical signals to a wealth of mechanical receptors (sensors) located in a follicle at each vibrissal base. A recent study has shown that-provided that the whisker is tapered-three mechanical signals at the base are sufficient to determine the three-dimensional location at which a whisker made contact with an object. However, creating biomimetic tapered whiskers has proved challenging from both materials and manufacturing standpoints. This study develops and characterizes an artificial whisker for use as part of a sensory input device that is a biomimic of the biological rat whisker neurosensory system. A novel manufacturing process termed surface conforming fiber drawing (SCFD) is developed to produce artificial whiskers that meet the requirements to be a successful mechanical and geometric mimic of the biological rat vibrissae. Testing the sensory capabilities of the artificial whisker shows improved performance over previous nontapered filaments. SCFD-manufactured tapered whiskers demonstrate the ability to predict contact point locations with a median distance error of 0.47 cm.