Pa kuwotcherera ndondomeko paultrasonic welder, kulowetsa kwa chizindikiro cha magetsi ku dongosolo la acoustic kumasintha mofulumira, ndipo kusinthasintha kwafupipafupi kumakhala kwakukulu.Kuti muwongolere liwiro la kuyeza komanso kulondola, choyamba, miyeso imatengedwa kuti musankhe chip ndi liwiro loyankhira mwachangu, ndipo nthawi yokhazikika ya chigawocho ndi ulalo wa fyuluta wozungulira wozungulira wa chip umayendetsedwa kuti ukhale wosakwana 0.2 ms. , kuti zitsimikizire kuti nthawi yonse yoyankhira dongosolo ndi yochepera 2 ms, ndikukwaniritsa zofunikira kuti zizindikire chizindikiro chamagetsi chomwe chikusintha mofulumira.Pofuna kuonetsetsa kuti kufunikira kwa ma frequency band amplitude ndi mawonekedwe afupipafupi a dongosolo, RCK mtundu resistor ndi mwatsatanetsatane mkulu ndi kukhazikika mkulu amasankhidwa, amene ali ochepa parasitic inductance ndi capacitance.Zigawo za Op-amp zidzasankhidwa ndi kukulitsa kwapang'onopang'ono kwa 10 ndi kutsekedwa-kukulitsa kwazing'ono zosakwana 10. Mwa njira iyi, phokoso lapamwamba la amplitude-frequency curve lingapezeke kuchokera ku 0 ~ 20 kHz ± 3 kHz.Zotsatirazi ndizofotokozera mwachidule za gawo lililonse logwira ntchito.
1.1 Kuyeza kwa Vrms yamagetsi a RMS
Zida zoyesera zomwe zapangidwa mu pepalali zimatha kuyeza sinusoidal voteji chizindikiro ndi kupotoza ndi RMS ya 0 ~ 1 000 V ndi pafupipafupi 20 kHz ± 3 kHz.Mphamvu yolowera imachotsedwa ndi siginecha, mtengo wa RMS umasinthidwa kukhala AC/DC, kenako ndikusinthidwa kukhala njira ziwiri zotulutsa.Njira imodzi imaperekedwa kumutu wa 3-bit semi-digital mita kutsogolo kwa tester, yomwe imawonetsa mwachindunji mtengo wa RMS wa 0-1 000 V voltage.Chinacho chimatulutsa 0 ~ 10 V siginecha yamagetsi ya analogi kudzera pagawo lakumbuyo la tester kuti apeze deta ndi kusanthula ndi kompyuta.
Mphamvu yamagetsi imatha kuchotsedwa ndi voltage transformer, Hall element sensor kapena photoelectric converter device.Njira izi
Ngakhale kudzipatula kuli kwabwino, kutulutsa magawo osiyanasiyana a kupotoza kwa ma waveform ndikusintha kwagawo kowonjezera kwa siginecha yamagetsi ya 20 kHz, zomwe zimapangitsa kuti zikhale zovuta kutsimikizira kulondola kwa kuyeza kwa mphamvu ndi kuyeza kwa gawo la Angle.Nkhaniyi AMAGWIRITSA NTCHITO molingana ndi amplifier pokonza ma siginoloji, kukana kwa amplifier pogwiritsa ntchito 5. 1 M Ψ, mbali iyi imatha kupangitsa kuti chizindikirocho chichepetse, chitetezo champhamvu pamabwalo otsatira, komanso chifukwa cha kulowetsedwa kwa amplifier kupitilira chizindikiro gwero kukana kwa akupanga jenereta, akupanga jenereta ntchito udindo alibe zimakhudza.
AD637 imagwiritsidwa ntchito poyezera voteji RMS.Ndi chosinthira cha AC-DC RMS chokhala ndi kusinthika kwakukulu komanso gulu lafupipafupi, ndipo kutembenukako sikudalira mawonekedwe a waveform.Ndiwowona RMS Converter.Cholakwika chachikulu ndi pafupifupi 1%.Pamene waveform factor ndi 1 ~ 2, palibe cholakwika chowonjezera chomwe chimapangidwa.
1.2 Kuyeza kwamtengo wapatali wamakono
Dera lamakono la RMS lodziwika bwino lomwe lapangidwa mu pepalali limatha kuzindikira chizindikiro chamakono ndi kupotoza kwa sinusoidal kwa 0 ~ 2 A, 20 kHz ± 3 kHz.Potengera muyezo zitsanzo kukana olumikizidwa mu mndandanda kwa katundu kuzungulira kwa akupanga jenereta mu FIG.1, yapano imasinthidwa kukhala chizindikiro chamagetsi molingana ndi izo.Popeza kukana kwachitsanzo ndi chipangizo chodziletsa, sikubweretsa kupotoza kwa ma waveform kapena kusintha kowonjezera, kuti zitsimikizire kulondola kwake.Mphamvu yamagetsi yofananira ndi yapano imasinthidwa kukhala siginecha yamagetsi ya analogi ndi RMS AC-DC converter AD637, yomwe imachokera kumutu wa mita ya digito ndi kompyuta m'njira ziwiri.Mfundo yosinthira ndi yofanana ndi ya kutembenuka kwa voteji ya RMS.
1.3 Kuyeza mphamvu yogwira ntchito
Chizindikiro choyezera mphamvu chogwira chimachokera ku voteji yocheperako ndipo I/V yosinthidwa siginecha mu gawo la kuyeza kwa RMS la voteji ndi lapano.Pakatikati pa gawo loyezera mphamvu ndi AD534 analog multiplier ndi fyuluta yozungulira.Pambuyo pompopompo voteji ikuchulukitsidwa ndi kuchulukitsa kwaposachedwa, gawo lapamwamba kwambiri limasefedwa kuti lipeze mphamvu yeniyeni yogwira.
1. 4 Kuyeza kwa kusiyana kwa gawo pakati pa panopa ndi magetsi
Kusiyana kwa gawo pakati pa voteji yolowera ndi yaposachedwa ya transducer akupanga amayezedwa popanga magetsi olowera ndi ma siginecha apano kukhala mafunde akulu kudzera pa zero-woloka comparator, ndiyeno kupanga kusiyana kwa gawo kudzera mu XOR logic processing.Chifukwa palibe kusiyana kwa gawo kokha pakati pa magetsi ndi magetsi, komanso kusiyana pakati pa lead ndi lag, Ming Yang adapanganso gawo loyang'anira nthawi kuti azindikire ubale wotsogolera ndi wotsalira.Ngati muli ndi chosowa chonde titumizireni.
1.5 Kuyeza pafupipafupi
Pafupipafupi muyeso gawo utenga single Chip microcomputer 8051, ntchito muyezo crystal pafupipafupi, galasi zimachitika chizindikiro kuwerengera mu nthawi inayake chizindikiro, akhoza anazindikira mkati 1 ms, pafupipafupi ndi 20 kHz, cholakwika si kupitirira 2 Hz.Zotsatira zoyezera pafupipafupi zimatulutsidwa ndi manambala a binary a 16-bit, kulowetsa ku khadi la I/O la pakompyuta, ndikusinthidwa kukhala ma frequency eni eni malinga ndi pulogalamu yamapulogalamu.
Akupanga kuwotcherera pulasitiki umatha pansi yomweyo ndi kukakamizidwa, ndi kuwotcherera ndondomeko amasonyeza makhalidwe a kudya, zovuta, zovuta ndi Mipikisano chizindikiro chikoka.Panthawi ndi pambuyo kuwotcherera, kupsinjika kwakukulu ndi kupunduka (kuwotcherera kotsalira kotsalira, kuwotcherera shrinkage, kuwotcherera warping) kudzapangidwa, ndi kupsinjika kwamphamvu ndi kuwotcherera otsalira kupsyinjika komwe kumapangidwa mu ndondomeko yowotcherera, komanso zimakhudza mapindikidwe a workpiece ndi kuwotcherera zolakwika.
Zimakhudzanso weldability wa kapangidwe workpiece ndi Chimaona fracture mphamvu, kutopa mphamvu, zokolola mphamvu, makhalidwe kugwedera ndi zina zotero.Makamaka kuwotcherera workpiece Machining kulondola ndi kukhazikika azithunzi.Vuto kuwotcherera matenthedwe kupsyinjika ndi mapindikidwe zovuta kwambiri, popanda kudziwiratu zam'tsogolo, sangathe mokwanira kulosera ndi kusanthula chikoka cha kuwotcherera pa katundu makina a wowotcherera lonse, ndi moona kupenda kuwotcherera khalidwe.Pa nthawi yomweyi, zambiri zofunika zambiri, zomwe zimakhudza, sizingayesedwe mwachindunji ndi njira zachizoloŵezi.
Ndife akatswiri R & D, kupanga, ndi malonda amakina owotcherera a ultrasonic, makina owotcherera pafupipafupi, makina owotcherera zitsulo, Akupanga jeneretafakitale.Ndife okondwa kugawana nawo thandizo lathu laukadaulo la ultrasound komanso zochitika za ultrasound.Ngati muli ndi polojekiti yoti mukambirane, chonde tiuzeni zakuthupi ndi kukula kwa zinthu zanu.Tidzakupatsani pulogalamu yaulere yowotcherera akupanga.
Nthawi yotumiza: Oct-20-2022