Umshayeli we-Servo,eyaziwa nangokuthi "isilawuli se-servo" noma "i-servo amplifier", iwuhlobo lwesilawuli esisetshenziselwa ukulawula ama-servo motors. Umsebenzi wayo uyafana nalowo wesiguquli semvamisa esisebenza kumamotho ajwayelekile e-AC, futhi siyingxenye yesistimu ye-servo. Ngokuvamile, ama-servo motors alawulwa ngezindlela ezintathu: isikhundla, isivinini, kanye ne-torque ukuze kuzuzwe ukuma okunembayo okuphezulu kohlelo lokudlulisela.
1, Ukwahlukaniswa kwama-servo motors
Ihlukaniswe yaba izigaba ezimbili: DC kanye AC servo motors, AC servo motors aphinde ahlukaniswe asynchronous servo motors kanye synchronous servo motors. Njengamanje, amasistimu e-AC ashintsha kancane kancane amasistimu e-DC. Uma kuqhathaniswa nezinhlelo ze-DC, ama-AC servo motors anezinzuzo ezifana nokuthembeka okuphezulu, ukuchithwa kahle kokushisa, isikhashana esincane se-inertia, kanye nekhono lokusebenza ngaphansi kwezimo zamandla kagesi aphezulu. Ngenxa yokushoda kwamabhulashi negiya lokuqondisa, isistimu yeseva yangasese ye-AC nayo isiphenduke isistimu ye-servo engenamabhulashi. Amamotho asetshenziswa kuyo ama-brushless cage asynchronous motors kanye namamotor synchronous kazibuthe unomphela.
1. Ama-DC servo motors ahlukaniswe ama-motor brushed nama-brushless
① Amamotho angenabhulashi anezindleko eziphansi, isakhiwo esilula, itorque enkulu yokuqala, ububanzi bokulawula isivinini, ukulawula okulula, futhi kudinga ukulungiswa. Kodwa-ke, kulula ukuwagcina (ukushintsha amabhulashi ekhabhoni), akhiqiza ukuphazamiseka kwe-electromagnetic, futhi anezidingo zendawo yokusebenza. Imvamisa zisetshenziswa ezinhlelweni ezibucayi ezibucayi ezisetshenziswa ezimbonini nasezindaweni zomphakathi;
② Ama-brushless motors anosayizi omncane, isisindo esincane, okukhiphayo okukhulu, ukusabela okusheshayo, isivinini esikhulu, inertia encane, i-torque ezinzile nokujikeleza okubushelelezi, ukulawulwa okuyinkimbinkimbi, ukuhlakanipha, izindlela zokuguquguquka ze-elekthronikhi eziguquguqukayo, kungaba igagasi lesikwele noma i-sine wave commutation, ukugcinwa mahhala, esebenza kahle futhi ewonga amandla, imisebe ye-electromagnetic ephansi, ukunyuka kwezinga lokushisa eliphansi, impilo ende yesevisi, futhi ifanele izindawo ezihlukahlukene.
2. Izici zezinhlobo ezahlukene zama-servo motors
1. Izinzuzo kanye nokubi kwe-DC servo motors
Izinzuzo: Ukulawula isivinini okunembile, izici zejubane le-torque ezinamandla, isimiso sokulawula esilula, ukusetshenziswa okulula, kanye nenani elithengekayo.
Ukungalungi: Ukushintshwa kwebhulashi, umkhawulo wejubane, ukumelana okwengeziwe, ukukhiqizwa kwezinhlayiya ezigugile (akuzifanele izindawo ezingenalo uthuli neziqhumane)
2. Izinzuzo kanye nokubiAma-AC servo motors
Izinzuzo: Izici zokulawula isivinini esihle, ukulawula okubushelelezi kungafinyelelwa kulo lonke uhla lwejubane, cishe akukho-oscillation, ukusebenza kahle okuphezulu okungaphezu kuka-90%, ukukhiqizwa kokushisa okuphansi, ukulawulwa kwesivinini esikhulu, ukulawulwa kwesikhundla sokunemba okuphezulu (kuye ngokuthi ukunemba kwesifaki khodi), ingakwazi ukufeza i-torque engaguquki ngaphakathi kwendawo yokusebenza elinganiselwe, inertia ephansi, umsindo ophansi, ukungagqoki kwebhulashi, ukugcinwa mahhala (ifanele izindawo ezingenalo uthuli neziqhumane).
Ukubi: Ukulawula kuyinkimbinkimbi, futhi imingcele yomshayeli idinga ukulungiswa endaweni ukuze kunqunywe imingcele ye-PID, edinga izintambo ezengeziwe.
Njengamanje, amadrayivu e-servo ajwayelekile asebenzisa ama-digital signal processors (DSP) njengomongo wokulawula, ongafinyelela ama-algorithms okulawula ayinkimbinkimbi, ukufakwa kwedijithali, inethiwekhi, kanye nobuhlakani. Amadivayisi kagesi ngokuvamile asebenzisa amasekhethi okushayela aklanywe ngamamojula wamandla ahlakaniphile (IPM) njengomongo. I-IPM ihlanganisa amasekhethi okushayela ngaphakathi futhi iphinde ibe namasekhethi okutholwa kwephutha nokuvikela ukugeleza kwamandla, i-overcurrent, overheating, undervoltage, njll. Amasekhethi okuqala athambile nawo ayangezwa kusiyingi esikhulu ukuze kuncishiswe umthelela wenqubo yokuqala kumshayeli. Iyunithi yedrayivu yamandla iqala ngokulungisa okokufaka kwezigaba ezintathu noma amandla amapayipi ngokusebenzisa isifunda sokulungisa ibhuloho esinezigaba ezintathu esigcwele ukuze kutholwe amandla e-DC ahambisanayo. Ngemuva kokulungiswa, amandla ezigaba ezintathu noma ama-mains asetshenziswa ukushayela injini ye-AC servo motor enezigaba ezintathu unomphela uzibuthe ngokusebenzisa isiguquli somthombo wamandla kagesi we-sine PWM esinezigaba ezintathu ukuze kuguqulwe imvamisa. Yonke inqubo yeyunithi yokushayela amandla ingachazwa kalula njengenqubo ye-AC-DC-AC. Isekhethi ye-topology eyinhloko yeyunithi yokulungisa (AC-DC) iyisekhethi egcwele yezigaba ezintathu yebhuloho engalawulwa.
3,Umdwebo wezintambo zesistimu ye-Servo
1. Izintambo zomshayeli
Idrayivu ye-servo ikakhulukazi ihlanganisa ukunikezwa kwamandla wesekethe yokulawula, ukunikezwa kwamandla wesekethe yokulawula, ukunikezwa kwamandla okukhipha i-servo, okokufaka kwesilawuli CN1, isixhumi esibonakalayo se-encoder CN2, kanye ne-CN3 exhunyiwe. Ukunikezwa kwamandla wesifunda sokulawula kuyisigaba esisodwa samandla we-AC, futhi amandla okufaka angaba yisigaba esisodwa noma isigaba sesithathu, kodwa kufanele abe ngu-220V. Lokhu kusho ukuthi uma kusetshenziswa okokufaka kwezigaba ezintathu, ugesi wethu wezigaba ezintathu kufanele uxhunywe nge-transformer. Kubashayeli bamandla aphansi, ingashayelwa ngokuqondile esigabeni esisodwa, futhi indlela yokuxhumana yesigaba esisodwa kufanele ixhunywe kumatheminali e-R ne-S. Khumbula ukuthi ungaxhumi okukhiphayo kwe-servo motor U, V, no-W kugesi wesekethe enkulu, njengoba kungase kushise umshayeli. Imbobo ye-CN1 isetshenziselwa kakhulu ukuxhuma isilawuli sekhompuyutha ephezulu, inikeze okokufaka, okukhiphayo, okuphumayo kwesigaba se-ABZ se-encoder ABZ, kanye nokuphuma kwe-analog kwamasignali okuqapha ahlukahlukene.
2. Izintambo zesifaki khodi
Kusukela kulesi sithombe esingenhla, kubonakala ukuthi sisebenzise kuphela amatheminali ayi-5 kweziyisishiyagalolunye, okuhlanganisa intambo eyodwa yokuvikela, izintambo ezimbili zamandla, kanye namasiginali wokuxhumana we-serial amabili (+-), afana nezintambo zesishumeki sethu esivamile.
3. Ichweba lokuxhumana
Umshayeli uxhunywe kumakhompyutha aphezulu njenge-PLC ne-HMI ngembobo ye-CN3, futhi ulawulwa ngokusebenzisaUkuxhumana kwe-MODUS. I-RS232 kanye ne-RS485 ingasetshenziselwa ukuxhumana.
Isikhathi sokuthumela: Dec-15-2023
