Piezoelectric ultrasonic motors muaj ob qhov zoo, uas yog lawv lub zog siab ceev thiab lawv cov qauv yooj yim, uas ob leeg pab txhawb rau lawv cov miniaturization.Peb tau tsim ib tsab qauv micro ultrasonic lub cev muaj zog siv lub stator nrog lub ntim ntawm kwv yees li ib lub cubic millimeter.Peb cov kev sim tau pom tias tus qauv lub cev muaj zog ua kom lub zog ntau dua 10 μNm nrog ib lub cubic millimeter stator.Lub tshuab tshiab no yog tam sim no lub tshuab me me tshaj plaws ntawm lub tshuab ultrasonic uas tau tsim nrog lub tswv yim torque.
Micro actuators xav tau rau ntau daim ntawv thov, xws li cov xov tooj ntawm tes thiab cov khoom siv hnav mus rau cov khoom siv kho mob tsawg kawg nkaus.Txawm li cas los xij, cov kev txwv cuam tshuam nrog lawv cov khoom tsim tau txwv lawv qhov kev xa tawm ntawm ib-millimeter nplai.Cov tshuab hluav taws xob feem ntau xav tau qhov kev ua haujlwm me me ntawm ntau cov khoom nyuaj xws li coils, hlau nplaum, thiab cov kabmob, thiab nthuav tawm cov torque dissipation loj heev vim qhov scaling.Electrostatic motors pab kom muaj peev xwm ua tau zoo los ntawm kev siv tshuab microelectromechanical systems (MEMS), tab sis lawv lub zog tsav tsis muaj zog tau txwv lawv txoj kev loj hlob ntxiv.
Piezoelectric ultrasonic motors xav tias yuav ua tau zoo micromotors vim tias lawv cov torque ceev thiab cov khoom yooj yim.Qhov tsawg tshaj plaws uas twb muaj lawm ultrasonic lub cev muaj zog qhia rau hnub tim muaj ib tug hlau tivthaiv nrog ib txoj kab uas hla ntawm 0.25 hli thiab ib tug ntev ntawm 1 hli.Txawm li cas los xij, tag nrho nws qhov loj me, suav nrog cov txheej txheem ua ntej, muaj li 2-3 hli, thiab nws cov nqi torque tsawg dhau (47 nNm) siv los ua tus actuator hauv ntau daim ntawv thov.
Tomoaki Mashimo, tus kws tshawb fawb ntawm Toyohashi University of Technology, tau tsim lub micro ultrasonic lub cev muaj zog nrog ib lub cubic millimeter stator, raws li qhia hauv daim duab 1, thiab nws kuj yog ib qho ntawm cov tshuab ultrasonic me tshaj plaws puas tau tsim.Lub stator, uas muaj ib lub voos xwmfab hlau nrog lub qhov los ntawm lub qhov thiab phaj-piezoelectric cov ntsiab lus ua raws li nws cov sab, tuaj yeem ua kom qis qis yam tsis tas yuav tsum muaj kev ua haujlwm tshwj xeeb lossis kev sib dhos.Tus qauv micro ultrasonic lub cev muaj zog ua tiav lub zog ua haujlwm ntawm 10 μNm (Yog tias lub rubey muaj lub vojvoog ntawm 1 hli, lub cev muaj zog tuaj yeem nqa 1-g qhov hnyav) thiab angular tshaj tawm ntawm 3000 rpm ntawm kwv yees li 70 Vp-p.Tus nqi torque no yog 200 npaug ntau dua li ntawm cov micro motors uas twb muaj lawm, thiab siv tau zoo heev rau kev tig cov khoom me me xws li cov ntsuas me me thiab cov khoom siv tshuab.
Post lub sij hawm: Feb-27-2018