Ngesikhathi inqubo Welding onwelder ultrasonic, okokufaka kwesignali kagesi ohlelweni lwe-acoustic kushintsha ngokushesha, futhi ububanzi bokuhluka kwamafrikhwensi bubanzi.Ukuze kuthuthukiswe isivinini sokulinganisa nokunemba, okokuqala, kuthathwa izinyathelo zokukhetha i-chip ngesivinini sokuphendula esisheshayo, futhi isikhathi esingaguquki sengxenye kanye nesixhumanisi sokuhlunga sesifunda se-peripheral ye-chip kulawulwa ukuthi sibe ngaphansi kuka-0.2 ms. , ukuze kuqinisekiswe ukuthi isikhathi esiphelele sokuphendula sesistimu singaphansi kuka-2 ms, futhi kuhlangatshezwane nesidingo sokuthola isignali kagesi eshintsha ngokushesha.Ukuze kuqinisekiswe isidingo se-wide frequency band amplitude kanye nezici zemvamisa yesistimu, i-RCK yohlobo lwe-resistor enembayo ephezulu nokuzinza okuphezulu ikhethiwe, ene-inductance encane ye-parasitic kanye nekhono.Izingxenye ze-Op-amp zizokhethwa ngokukhuliswa kwe-loop evulekile okungaphezu kwe-10 kanye nokukhulisa iluphu evaliwe okungaphansi kuka-10. Ngale ndlela, ijika le-amplitude-frequency eliyisicaba lingatholakala ku-0 ~ 20 kHz ± 3 kHz.Okulandelayo incazelo emfushane yemojula ngayinye yokusebenza.
1.1 Ukukalwa kwama-Vrms we-voltage RMS
Imishini yokuhlola eyenziwe kuleli phepha ingakala isignali kagesi we-sinusoidal ngokuhlanekezela nge-RMS engu-0 ~ 1 000 V kanye nemvamisa engu-20 kHz±3 kHz.I-voltage yokufaka ikhishwa ngesignali, inani le-RMS liguqulelwa ku-AC/DC, bese lilungiswa ngokulingana libe amashaneli amabili okukhiphayo.Isiteshi esisodwa sinikezwa ekhanda lemitha eyi-semi-digital engu-3-bit kuphaneli yangaphambili yesihloli, ebonisa ngokuqondile inani le-RMS lika-0-1 000 V voltage.Enye ikhipha isignali ye-analog ye-analog engu-0 ~ 10 ngephaneli yangemuva yesihloli ukuze kutholwe idatha nokuhlaziywa yikhompyutha.
Isignali kagesi ingakhishwa nge-voltage transformer, inzwa ye-Hall element noma idivayisi yokuguqula isithombe sikagesi.Lezi zindlela
Nakuba ukuhlukaniswa kukuhle, kuzokhiqiza amadigri ahlukene okuhlanekezelwa kwe-waveform kanye noshintsho lwesigaba esengeziwe sesignali kagesi engu-20 kHz, okwenza kube nzima ukuqinisekisa ukunemba kokulinganisa amandla kanye nokulinganisa kwe-Angle yesigaba.Lesi sihloko ISEBENZISA i-amplifier elinganiselwe ekucubunguleni isignali ye-voltage, ukumelana nokokufaka kwe-amplifier kusetshenziswa 5. 1 M Ψ, lesi sici singenza isignali yokufaka inciphise, ukuvikela ukucindezela okuphezulu kwamasekhethi alandelayo, futhi njengomphumela wokufakwa kwe-amplifier okokufaka kwe-amplifier kudlule kude Ukumelana nomthombo wesignali we-generator ye-ultrasonic, isimo sokusebenza se-ultrasonic generator asinawo umthelela.
I-AD637 isetshenziselwa isilinganiso se-voltage RMS.Isiguquli se-AC-DC RMS esinokunemba okuphezulu kokuguqulwa kanye nebhendi yefrikhwensi ebanzi, futhi ukuguqulwa kuzimele ku-waveform.Kuyi-converter yeqiniso ye-RMS.Iphutha eliphezulu licishe libe ngu-1%.Lapho isici se-waveform singu-1 ~ 2, alikho iphutha elengeziwe elikhiqizwayo.
1.2 Ukulinganiswa kwevelu esebenzayo yamanje
Umjikelezo wamanje wokutholwa kwe-RMS othuthukiswe kuleli phepha ungathola isignali yamanje ngokuhlanekezela kwe-sinusoidal okungu-0 ~ 2 A, 20 kHz ±3 kHz.Ngokwamukela ukumelana kwesampula okujwayelekile okuxhunywe ochungechungeni ku-loop yokulayisha yejeneretha ye-ultrasonic ku-FIG.1, yamanje iqala ukuguqulwa ibe isignali kagesi ngokulingana nayo.Njengoba ukumelana kwesampula kuyithuluzi elimsulwa eliphikisayo, ngeke kulethe ukuhlanekezela kwe-waveform yamanje noma ukushintsha kwesigaba okwengeziwe, ukuze kuqinisekiswe ukunemba kwesilinganiso.Isignali ye-voltage ngokulingana neyamanje iguqulwa ibe isignali kagesi ye-analog ngesiguquli se-RMS AC-DC AD637, esikhishelwa ekhanda lemitha yedijithali nekhompyutha ngezindlela ezimbili.Umgomo wokuguqula uyafana nalowo wokuguqulwa kwamandla kagesi we-RMS.
1.3 Ukukalwa kwamandla asebenzayo
Isignali yokulinganisa amandla asebenzayo ivela ku-voltage encishisiwe kanye nesignali eguquliwe ye-I/V kumojuli yokulinganisa ye-RMS yevolthi kanye neyamanje.Umnyombo wemojula yokulinganisa amandla yi-AD534 analog multiplier kanye nesekhethi yesihlungi.Ngemuva kokuthi i-voltage esheshayo iphindaphindwe isiphindaphindi sokugeleza samanje, ingxenye yefrikhwensi ephezulu iyahlungwa ukuze kutholwe amandla asebenzayo wangempela.
1. 4 Ukulinganisa umehluko wesigaba phakathi kwamanje kanye ne-voltage
Umehluko wesigaba phakathi kwe-voltage yokufaka kanye neyamanje ye-transducer ye-ultrasonic ukalwa ngokubumba i-voltage yokufaka namasignali amanje abe amaza ayisikwele ngesiqhathaniso esiwela iqanda, bese kuhlanganiswa umehluko wesigaba ngokucubungula okunengqondo kwe-XOR.Ngenxa yokuthi akukho umehluko wesigaba kuphela phakathi kwe-voltage neyamanje, kodwa futhi umehluko phakathi komthofu ne-lag, i-Ming Yang iphinde yaklama umjikelezo wesikhathi ukukhomba ubudlelwano bokuhola kanye ne-lag.Uma unesidingo sicela usithinte.
1.5 Ukulinganisa imvamisa
Imojula yokulinganisa imvamisa isebenzisa i-chip microcomputer 8051 eyodwa, isebenzisa imvamisa yekristalu ejwayelekile, ukubala kwesiginali ye-crystal pulse esikhathini esithile sesiginali, ingabonakala ku-1 ms, imvamisa ingu-20 kHz, iphutha alikho ngaphezu kuka-2 Hz.Imiphumela yokulinganisa imvamisa iphuma ngezinombolo kanambambili ezingu-16, okokufaka ekhadini le-I/O lekhompyutha, futhi iguqulelwa kumanani wefrikhwensi yamadesimali ngokuhlelwa kwesofthiwe.
I-Ultrasonic plastic welding iqedwa ngaphansi kwengcindezi esheshayo, futhi inqubo yokushisela ikhombisa izici zethonya elisheshayo, eliyinkimbinkimbi, elinzima nelinamapharamitha amaningi.Ngesikhathi nangemva kokushisela, kuzokhiqizwa ukucindezeleka okukhulu kanye nokuguqulwa (ukuguqulwa kwe-welding residual, i-welding shrinkage, i-welding warping) izokhiqizwa, kanye nokucindezeleka okuguquguqukayo nokucindezeleka okusalayo okutholakala ohlelweni lokushisela, kodwa futhi kuthinte ukuguquguquka kwesiqeshana sokusebenza kanye nokukhubazeka kokushisela.
Kuphinde kuthinte ukushisela kwesakhiwo se-workpiece namandla okuphuka kwe-brittle, amandla okukhathala, amandla esivuno, izici zokudlidliza nokunye.Ikakhulukazi kuthinte ukunemba kwe-welding workpiece machining kanye nokuzinza kwe-dimensional.Inkinga yokushisela ukucindezeleka okushisayo nokuguqulwa inzima kakhulu, ngaphandle kokubona izinto kusengaphambili, ayikwazi ukubikezela ngokugcwele futhi ihlaziye umthelela we-welding kuzakhiwo zemishini ze-welder yonke, futhi ihlole ngokucophelela ikhwalithi yokushisela.Ngesikhathi esifanayo, idatha eminingi ebalulekile, okungukuthi umthelela, ayikwazi ukulinganiswa ngokuqondile ngezindlela ezivamile.
Siyi-R & D yochwepheshe, ukukhiqiza, nokuthengisa kweumshini wokushisela we-ultrasonic, high frequency welding umshini, umshini wokushisela wensimbi, Ijeneretha ye-Ultrasonicifektri.Siyajabula ukwabelana ngosekelo lwethu lobuchwepheshe be-ultrasound kanye nesipiliyoni secala le-ultrasound.Uma unephrojekthi okufanele uthintane nayo, sicela usitshele impahla kanye nosayizi wemikhiqizo yakho.Sizokunikeza uhlelo lwe-welding lwe-ultrasonic lwamahhala.
Isikhathi sokuthumela: Oct-20-2022