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ID:56002744
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时间:2020-06-19
《纤维材料属性与接触摩擦振动信号结构之间的关系.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、!圭璺旦:筻丝鲞:苎呈塑SHANGHAITEXTILESCIENCE&TECHNOLOGY上海纺织科技lV0I.42No.8.2014研究报告l1纤维材料属性与接触摩擦振动信号结构之间的关系孟粉叶,胡吉永,姜瑞涛,章媛。(1.通标标准技术服务有限公司(上海),上海201103;2.东华大学教育部纺织面料技术重点实验室,上海201620)(3.东华大学纺织学院,上海201620)摘要:采用振动反馈刺激方式再现织物的触觉质感时,找到体现物体特性并符合触觉感受器生理属性的振动刺激是一个必要条件。针对此问题,探索反映纤维类型的皮肤摩擦振动信息特征。通过设计一组结构参数相同而纤
2、维类型不同的机织物,以三轴向加速度传感器记录手指滑过这些样品表面时产生的振动信号。采用快速傅立叶变换技术对振动信号进行频谱分析,并以皮肤触觉感受器的频域刺激响应特性为依据提取频域内的特征信号。经分析发现,幅频特征不能用于分辨不同材料的机织物,基波的特征部分体现了机织物的结构参数,但前3次谐波功率强度的加权值在天然纤维素纤维和合成纤维之间具有显著差异。关键词:纤维;摩擦振动;指尖;频谱;快速傅里叶变换中图分类号:TS101.8文献标识码:B文章编号:1001·2044(2014)08-0001·06Relationshipbetweentextilefibersandf
3、riction.inducedvibrationsignalsMENGFenye,HUJiyong。,jIANGRuitao,ZHANGYuan(1.SGS—CSTCStandardsTechnicalServicesCo.,Ltd.(Shanghai),Shanghai201103,China)(2.KeyLabofTextileScience&Technology,MinistryofEducation,DonghuaUniversity,Shanghai201620,China)(3.CollegeofTextiles,DonghuaUniversity,Sha
4、nghai201620,China)Abstract:Torealisticallyreproducethetactilequalitiesofthefabricbythevibrationfoedbaekinterface,itisaprerequisitefortheidentificationofthevibrationsignalsrepresentingtheobjectpropertiesaswellastheneurophysiologicalpropertiesofcutaneousmechanoreceptorswithinhumanfingerti
5、p.Thus,aseriesofsimplewovenfabricsaredesignedbysamestructurebutchan~ngthefibertypes,andthefriction—inducedvibrationsignals,wherehumanfingertipslidesacrossthehbricsurfaceataconstantvelocity,arerecordbyatri—axialaccelerators.ThemeasuredvibrationsignalsareanalyzedbyaFastFourierTransformati
6、on(F丌)technique,andthefeaturesinfrequencyayeextractedonthebaseofthefrequencyresponsesofcutaneousmechanorecept0rs.Theresultshowsthatthefabricsmadeofdifferentfiberscannotbeidentifiedbytheamplitude·frequencyfeatures,andthewaveformfeaturesofthefundamentalwaveconsistedofthevibrationsignalsre
7、presenttosomedegreethestructureparametersofasimplewovenfabric.However,theweightedvibrationpowersofthethreeharmonicwavesbasicallydifferinthefabricsmadeofnaturalfibersandsyntheticfibers.Keywords:fibers;friction—inducedvibration;fingertip;frequencyspectrum;Fftr自从Katz发表关于触觉的研究结果以来,
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