摘要
为了检测步行时足底的受力信息,设计了一种新型结构的足底三轴力传感器.传感器为一正三棱锥状结构体,由硬质橡胶材料的正三棱锥状体和与之相配的环氧树脂凹槽叠合而成.锥体的叠合分形面放置了高分子压电敏感材料聚偏二氟乙烯(PVDF),足底受力通过凸凹结合面传递.足底受力时3个分形面上的PVDF输出3路压电信号,通过解耦运算得到足底三轴力.实验表明,该传感器具有良好的灵敏度和测量精度,并且由于结构的独特性,抗过载能力好,适用于足底力测量.
A new type of force sensor was designed to measure the dynamic plantar force.This sensor has a triangular pyramid structure,combined with a triangular pyramid made up by ebonite and a groove made up by epoxy resin.Three PVDF pieces were placed on the triangular pyramid′s sides,and the plantar force is tranfered by the joit of the convex plane and the concave plane.When there is a plantar force,the PVDF pieces could have piezoelectric signal outputs.Through decoupling operation,the plantar triaxial forces ca...
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2008年第S1期130-133,共4页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家高技术研究发展计划资助项目(2008AA04Z212)
浙江省科技计划资助项目(2007C23088)
