A Study on Design Concept for a Braille Tactile Sensor Segment Using Softness Parameters
A Study on Design Concept for a Braille Tactile Sensor Segment Using Softness Parameters
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DOI：
10.1299/jsmec.49.480
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发表时间：
2006-06
期刊：
影响因子：
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通讯作者：
Zhongwei Jiang;Sayyed Alireza Arabshahi;Tetsuyou Watanabe
中科院分区：
文献类型：
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作者：
Zhongwei Jiang;Sayyed Alireza Arabshahi;Tetsuyou Watanabe
这份报告的目的是介绍和讨论盲文字母表中一个点的触觉传感器部分的设计参数。设计了一种夹在两个弹性材料之间的压电膜(PVDF)传感器段。通过实验和仿真来确定和检验设计参数。对于传感器结构，提出了自由边界条件和固定边界条件，并推导了包含设计参数如“弯曲柔度”的相关方程。对PVDF薄膜周围的层应用不同的材料和厚度，使用模拟来量化每个设计参数的近似值。结果表明，传感器的输出主要依赖于PVDF层附近的弯曲效应，弯曲程度越大的结构输出越大。最后得出结论，实际传感器的结构介于自由边界条件和固定边界条件之间，因此对设计参数进行了修改以折衷于两种情况之间，并给出了最佳值。
The purpose of this report is to introduce and discuss about the design parameters for a segment of a tactile sensor reading one dot of a Braille alphabet. A sensor segment consisting of a piezoelectric (PVDF) film sandwiched between two elastic materials is designed. Experiments and simulations are used to define and examine the design parameters. With regards to the sensor structure, Free and Clamped boundary conditions are presented and the relevant equations containing the design parameters, e.g. “bending softness”, are derived. Applying different materials and thicknesses for layers surrounding the PVDF film, simulations are used to quantize the approximate values for each design parameter. The results show that the output of sensor is mostly dependent on the bending effect near the PVDF layer, and the structure encouraging more bending produces higher output. Finally, it is concluded that the real sensor has a structure which is between Free and Clamped boundary conditions, therefore design parameters are modified to compromise between the two cases and optimum values are presented.