柔性触觉传感器压力温度敏感交叉效应研究  

Study of pressure/temperature sensitive cross effect of flexible tactile sensor for robot skin

作　　者：李锐琦[1] 黄英[1,2] 田敏[1] 刘彩霞[1] 

机构地区：[1]合肥工业大学电子科学与应用物理学院,合肥230009 [2]中国科学院合肥智能机械研究所,合肥230031

出　　处：《华中科技大学学报（自然科学版）》2013年第S1期200-203,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(61072032);国家自然科学青年基金资助项目(61201076)

摘　　要：以碳黑、碳纳米管为填料,硅橡胶为基体制备柔性触觉传感器敏感材料.根据量子隧道效应理论,碳系/硅橡胶复合材料同时具有压力与温度双重敏感效应.通过炭黑与碳纳米管并用(质量比2∶3)产生协同作用抑制复合材料的正电阻温度特性;添加适量纳米改性材料改善复合材料的压阻特性,进一步降低了温度敏感性.实验结果表明:本研究有效抑制了柔性触觉传感器压力/温度敏感特性交叉效应,制备触觉传感器的线性拟合优度为0.929 56,力学灵敏度为0.58/MPa,电阻温度系数为0.005 72/℃,提高了应用于机器人皮肤的柔性触觉传感器实际使用的环境抗干扰性能.The flexible tactile sensing material was prepared by carbon nanotubes and carbon black as conductive phase and silicon rubber as matrix.According to quantum tunneling effect theory,carbon series/silicon rubber composites have tactile and temperature double sensitive characteristics.Synergistic effect was caused by the co-filling of carbon nanotubes and carbon black(mass ratio is 2∶3), which would restrain the positive temperature-resistance effect of the composite.The linearity of piezoresistance of the composites was improved by the addition of nanometer modified material,simultaneously,the thermal expansion of colloid was restrained.The tactile sensing material was prepared whose goodness of linear fit was 0.929 56,mechanical sensitivity was 0.58/MPa,temperature coefficient of resistance was 0.005 72/℃.The tactile/temperature sensitive cross effect of the flexible tactile sensor is effectively restrained,the composite is promising in robot artificial skin field.

关 键 词：传感器 柔性结构 炭黑 碳纳米管 协同效应 纳米SIO2 交叉干扰 

分 类 号：TP242[自动化与计算机技术—检测技术与自动化装置] TP212[自动化与计算机技术—控制科学与工程]