Piezoelectric ultrasonic Motors suna da manyan fa'idodi guda biyu, wato babban ƙarfin ƙarfin su da tsarin su mai sauƙi, waɗanda duka biyun suna ba da gudummawa ga ƙarancin su.Mun gina wani samfurin micro ultrasonic motor ta amfani da stator tare da ƙarar kusan millimita cubic ɗaya.Gwaje-gwajenmu sun nuna cewa injin samfurin yana haifar da juzu'in fiye da 10 μNm tare da stator cubic millimeter daya.Wannan motar novel yanzu ita ce mafi ƙarancin injin micro ultrasonic wanda aka haɓaka tare da juzu'i mai amfani.
Ana buƙatar masu kunna ƙararrawa don aikace-aikace masu yawa, kama daga wayar hannu da na'urori masu sawa zuwa na'urorin likitanci marasa ƙarfi.Duk da haka, iyakokin da ke tattare da ƙirƙira su sun taƙaita tura su a sikelin millimita ɗaya.Motocin lantarki na yau da kullun suna buƙatar ƙaramin rikitattun abubuwa kamar su coils, magnets, da bearings, da kuma nuna ɓarna mai tsananin ƙarfi saboda ƙima.Motoci masu amfani da wutar lantarki suna ba da damar ingantacciyar ƙima ta amfani da fasahar microelectromechanical Systems (MEMS), amma raunin su na tuƙi ya iyakance ci gaban su.
Ana sa ran motocin ultrasonic na Piezoelectric za su zama micromotors masu ɗorewa saboda girman ƙarfinsu da sassa masu sauƙi.Mafi ƙanƙantar motar ultrasonic da aka ruwaito har zuwa yau yana da ɓangaren ƙarfe tare da diamita na 0.25 mm da tsayin 1 mm.Koyaya, jimillar girmansa, gami da na'ura mai ɗaukar nauyi, ya kai 2-3 mm, kuma ƙimar ƙarfinsa ya yi ƙanƙanta (47 nNm) don amfani da shi azaman mai kunnawa a aikace-aikace da yawa.
Tomoaki Mashimo, wani mai bincike a Jami'ar Fasaha ta Toyohashi, ya kasance yana haɓaka injin micro ultrasonic tare da stator cubic millimeters guda ɗaya, kamar yadda aka nuna a hoto na 1, kuma yana ɗaya daga cikin mafi ƙanƙanta na injin ultrasonic da aka taɓa ginawa.Stator, wanda ya ƙunshi kubu mai ƙarfe tare da ramuka da faranti-piezoelectric abubuwan da ke manne da ɓangarorinsa, ana iya rage girmansa ba tare da buƙatar kowane hanyoyin injuna ko haɗawa ba.Samfurin samfurin micro ultrasonic motor ya sami madaidaicin juzu'i na 10 μNm (Idan mashin ɗin yana da radius na 1 mm, injin zai iya ɗaga nauyin 1-g) da saurin kusurwa na 3000 rpm a kusan 70 Vp-p.Wannan darajar karfin juzu'i ya fi girma sau 200 fiye da na ƙananan injinan da ake da su, kuma yana da matukar amfani don jujjuya ƙananan abubuwa kamar ƙananan na'urori masu auna sigina da sassa na inji.
Lokacin aikawa: Fabrairu-27-2018