时域掩蔽效应对人体振动舒适性影响的试验研究

打开文本图片集

关键词：全身振动；振动舒适性；时域掩蔽；人体振动响应；主观评价 中图分类号：TB535；R594.6 文献标志码：A DOI：10.16385/j.cnki.issn.1004-4523.202311060

Experimental study on temporal masking effect of human vibration comfort

GUO Zhi1，LIN Jiewei¹， YANG Xiyu1，WANG Jian²，LIN Zefeng² （1.Schoolof Mechnical Enginering，Tianjin University，Tianjin 3Oo35o，China;2.China National HeavyDuty Truck Group Co.，Ltd.，Jinan 25Oooo，China；3.CollgeofEnergyEngineeing，Zhejiang University，Hangzhou 310o58，China）

Abstract：Thehumanbody’sperceptionofonestimulusmaychangeduetotheoccurrenceofanotherstimulus，whichleads tothe posibilityofamaskingefectbetweevibrationsthatsuccessvelyactonthehumanbody.Whetherthemaskingefectissgnificant ornotiselatedtomanyfactors.Thisstudydesignedandcariedoutaseatedhumanvibrationexperimenttoexplorethempactof time-domainmaskingefectsonvibrationcomfortoftheseated human body.Designedvariablesinclude：intensityof masking sig nals（3levels），vibration interval（4levels），and maskingsequence（forwardandbackward）.Theexperimentalresultsshowthat thesefactorsdohaveanimpactontheoverallcomfortwhensubjectedtowhole-bodyvibration；comparingtheefectsofforward maskingtestsandbackwardmaskingtests，thediscomfortcausedbybackward maskingtestsisstronger;withtheincreaseofvibrationtime intervalandthedecreaseofthemaskingsignalstrength，theinfluenceofthemaskingeffectonhumanbodydiscomfort graduallyweakens.Itcanbefoundthatinaditiontofrequencydomainweighting，thetimedomaincharacteristicsofvibrationamplitudealsohaveanon-negligibleimpactontheevaluationofhumanvibrationdiscomfort.Comfortpredictionbasedonobjectivere sponses should consider the influence of more factors.

Keywords：whole-bodyvibration;vibrationcomfort;temporalmasking;human vibration response;subjective evaluation

长期暴露在振动下，人体会产生一定的不舒适感，振动对工作效率和身心健康都会造成损害[1]。（剩余9020字）