Ukuxazulula Izinkinga Zokuphazamiseka Kwe-Electromagnetic (EMI) Ezigabeni Zemoto Ye-Servo

Sesilokhu sakha izigaba ezisebenzisa izandla nezinjini iminyaka engaphezu kwengu-9. Sakha nezinkundla zokuqondisa ezizenzakalelayo. Ngakho-ke sibone izinkinga eziningi ze-EMI. Ezinye zilula. Ezinye zikwenza ufune ukukhipha izinwele zakho.

Uma usebenza ngokuqondanisa okubonakalayo, uyazi umuzwa. Isiteji siyahamba. Ikhamera iyabukeka. Isithombe sinomsindo. Indawo ivaliwe ngama-micron ambalwa. Uhlola imishini. Konke kuqinile. Bese uqaphela ukuthi inkinga akuyona imishini. Umsindo kagesi.

Lo mhlahlandlela ungowabathengi, onjiniyela, nanoma ubani odinga i-isigaba semoto ye-servolokho kusebenza ngempela efektri yangempela. Akukho lutho oluyize. Izinto eziwusizo nje esizifundile kumaphrojekthi angempela.

Lokho i-EMI ekwenzayo esiteji se-Servo Motor

I-EMI imele ukuphazamiseka kwe-electromagnetic. Umsindo kagesi ongadingeki. Ungahamba ngezintambo noma emoyeni. Uma ungena esigabeni sakho, uphazamisa idrayivu, i-encoder, ikhamera, noma izinzwa.

Umphumela?Ukuphazamiseka kokulawula ukunyakaza. Isigaba asihambi ngqo lapho usitshele khona. Ngezinye izikhathi kuba yiphutha elincane. Ngezinye izikhathi kuba likhulu. Ekuqondisweni kwe-optical, ngisho nephutha elincane liyinto enkulu.

Sibone isigaba esijwayelekile esinokuphindaphindeka okungu-2 µm elabhorethri. Emgqeni wokukhiqiza, sehle saya ku-15 µm. Isigaba esifanayo. Ubuchwepheshe obufanayo. Umehluko kuphela kwakuyi-EMI kusuka emishinini eseduze.

Lapho i-EMI Ivela Khona Ezigabeni Ezinenjini

I-EMI ezigabeni ezinenjiningokuvamile zivela ezindaweni ezine. Ake sizichaze.

I-Drive Ngokuvamile Ingumsolwa Oyinhloko

Ama-servo drive amaningi asebenzisa i-PWM. Lokho kusho ukuthi avula futhi avale amandla ngokushesha okukhulu. Sikhuluma nge-10 kHz kuya ku-100 kHz noma ngaphezulu. Lokhu kushintsha okusheshayo kudala umsindo wemvamisa ephezulu. Kungumthombo omkhulu we-EMI ezinhlelweni eziningi.

Amakhebula Nokumisa Inhlabathi: Abasolwa Abavamile

Izintambo zikagesi kanye nezintambo zesignali akufanele zisebenze ndawonye. Uma zenza kanjalo, umsindo uyagxuma usuka komunye uye komunye. Sibone ukugijima kwamamitha amathathu kwekhebula le-encoder elingavikelwe eduze kwekhebula likagesi elingu-220 V. Lokho kwenezele iphutha elingu-10 µm. Kusuka nje ekuqondisweni kwekhebula.

Ukumiswa kabi komhlabathi kungenye into enkulu. I-ground loop isebenza njenge-antenna. Ibamba umsindo bese iwuthumela ngqo ku-encoder yakho noma kukhamera.

Ama-Encoder namaKhamera Yizisulu

Ama-encoder athumela amasignali ane-voltage ephansi. Kulula ukuwaphazamisa. Uma ikhebula le-encoder lingavikelwe, umsindo ungashintsha ama-pulse. I-drive bese icabanga ukuthi isiteji sisendaweni ethile lapho singekho khona.

Amakhamera nawo ayazwela. I-EMI ivela njengemigqa, iqhwa, noma imigoqo egoqekayo esithombeni. Isofthiwe ibona unqenqema olungalungile. Ibala i-offset engalungile. Isiteji siya endaweni engalungile.

Eminye Imithombo Ongase Ungacabangi Ngayo

Ama-Welder, amaphampu, ama-laser, ngisho nezibani ze-fluorescent zingadala i-EMI. Sake saba nekhasimende elalinephutha esigabeni njalo lapho umshiseli oseduze evula. Isiteji sasilungile. Inkinga yayiyindawo.

Kungani Ukuqondanisa Okuzenzakalelayo Kokubona Kubucayi Kangaka

I-EMI kuZigaba Ezinenjini Zamapulatifomu Okuhambisana Nokukhanya Okuzenzakalelayokuyinkinga evamile futhi ebiza kakhulu. Nasi isizathu.

Ukuqondanisa okubonakalayo kuyinqubo evalekile. Ikhamera ibheka uphawu. Isofthiwe ibala i-offset. Isigaba siyahamba ukuze siyilungise. Bese ikhamera ihlola futhi. Uma i-EMI ingena kusignali yekhamera, isithombe asicacile. Uma i-EMI ingena kusignali ye-encoder, idrayivu iyadideka. I-loop ayihlali.

Emafektri amaningi, umgomo uphakathi kuka-1 µm no-5 µm. I-EMI ingangeza kalula amaphutha angu-10 µm no-50 µm. Yilowo umehluko phakathi kokudlula kanye nokwehluleka.

Ungakunciphisa Kanjani Ukuphazamiseka Kokulawula Ukunyakaza Ezigabeni Zemoto Ye-Servo Zezinkundla Zokuqondisa Okuzenzakalelayo Kwe-Optical?

Lona umbuzo omkhulu.Ungakunciphisa Kanjani Ukuphazamiseka Kokulawula Ukunyakaza Ezigabeni Zemoto Ye-Servo Zezinkundla Zokuqondisa Okuzenzakalelayo Kwe-Optical?Impendulo akuyona ingxenye eyodwa yomlingo. Kuyindlela yohlelo.

Nazi izinto eziyi-8 esizenzayo kumaphrojekthi angempela.

1. Sebenzisa Amakhebula Ahlanganisiwe Avikelwe

Isivikelo sivimba amasimu kagesi. Ukusonta kukhansela amasimu kazibuthe. Sebenzisa i-twisted-pair evikelwe kuma-encoder. Sebenzisa izintambo ezivikelwe ukuze uthole amandla emoto. Xhuma isivikelo kuzo zombili izinhlangothi ukuze uthole umsindo ovama kakhulu. Ukuze uthole umsindo ovama kancane, zama uhlangothi olulodwa. Hlola kokubili.

Isivikelo esihle singanciphisa umsindo ngo-20 dB kuya ku-40 dB. Lokho kusho ukuthi i-voltage yomsindo incishiswe ngokuphindwe kayishumi kuya kwekhulu.

2. Gcina Izintambo Zikagesi Nezignali Zihlukene

Gcina izintambo zikagesi okungenani zingama-20 cm ukusuka ezintanjeni zesignali. Uma kufanele ziwele, ziwele ngama-degree angu-90. Ungalokothi uzigijime zihambisana ibanga elide. Lo mthetho olula unganciphisaukuphazamiseka kokulawula ukunyakazangesigamu noma ngaphezulu.

3. Lungisa Isisekelo Sakho

Sebenzisa indawo enephuzu elilodwa kumasignali e-analog. Sebenzisa indawo enephuzu elilodwa ukuze uthole umsindo ovame kakhulu. Gcina izintambo zomhlaba zimfushane futhi zijiyile. Gwema izintambo eziluhlaza. Indawo embi ingenza i-EMI ibe yimbi kakhulu, hhayi ibe ngcono.

4. Engeza izihlungi ze-EMI kanye nama-Ferrite Cores

Faka isihlungi se-EMI kokufakwayo kwe-AC kwedrayivu. Faka ama-ferrite cores kumakhebula e-motor kanye ne-encoder. I-ferrite core ingangeza i-10 dB ku-30 ​​dB ye-impedance ngesivinini esiphezulu. Ivimba umsindo ekuhambeni ngekhebula.

5. Khetha Amadrayivu Nama-Motor Aphansi EMI

Akuwona wonke ama-drive alinganayo. Amanye anokushintshana okuthambile. Amanye anezihlungi ezakhelwe ngaphakathi. Amanye ama-motor anomklamo ongcono wokugoqa. Cela idatha yokuhlolwa kwe-EMI. I-EMI ephansiisigaba semoto ye-servokungabiza ngaphezulu ngo-10% kuya ku-20%. Kodwa kungonga u-50% wesikhathi sokulungisa amaphutha.

6. Thuthukisa Impendulo Yokufaka Ikhodi

Sebenzisa ama-differential encoders esikhundleni se-single-end. Amasignali okuhlukanisa enqaba umsindo wemodi evamile. Sebenzisa ama-optical encoders emasimini anamandla kazibuthe. Sebenzisa ama-magnetic encoders ezindaweni ezingcolile. Qondanisa i-encoder nomsebenzi.

7. Linganisa Ngaphambi Kokuthi Ulungise

Awukwazi ukulungisa lokho ongakwazi ukukukala. Sebenzisa i-oscilloscope ukubheka amasignali e-encoder. Sebenzisa i-EMI receiver ukuthola umsindo okhishwa yilanga. Hlola eduze kwekhamera, i-encoder, bese ushayela. Qopha izinga lomsindo ngaphambi nangemva kokulungiswa ngakunye.

8. Sebenzisa Izihlungi Zesofthiwe Njengendlela Yokugcina Yokuphumula

Ngezinye izikhathi ihadiwe ayanele. Ungangeza isihlungi se-notch kudrayivu. Ungangeza isihlungi esidlula kancane kusofthiwe yekhamera. Ungalinganisa ukufundwa okuningi. Lezi zindlela azisusi i-EMI, kodwa zinciphisa umphumela wayo.

Ithebula 1 likhombisa ukuthi hlobo luni lwentuthuko ongayilindela.

Isiteji Semoto Ye-Servo Ye-EMI Ephansi vs Isiteji Semoto Ye-Servo Ejwayelekile Yokulungiswa Kokukhanya Okuzenzakalelayo

Uma uthenga isiteji, unenketho. Ungathenga isiteji esijwayelekile. Noma ungathenga isiteji se-EMI esiphansi.Isiteji Semoto Ye-Servo Ye-EMI Ephansi vs Isiteji Semoto Ye-Servo Ejwayelekile Yokulungiswa Kokukhanya OkuzenzakalelayoUkuqhathanisa kubalulekile. Kuthinta intengo, isikhathi sokuhola, kanye nokusebenza.

Nansi indlela abaqhathanisa ngayo.

Isigaba esijwayelekile silungele imisebenzi elula. Uma usuka endaweni A uye endaweni B ngokunemba okungu-50 µm, i-EMI ingase ingabalulekile. Kodwa uma uvumelanisa izingxenye ze-optical ngokunemba okungu-1 µm, isigaba esijwayelekile singase sehluleke.

Isigaba se-EMI esiphansi sibiza kakhulu. Kodwa sinciphisa ubungozi. Sisindisa isikhathi sobunjiniyela. Sithuthukisa isivuno. Kumaphrojekthi amaningi, izindleko ezengeziwe ziyabuya emavikini.

Uhlu Lokuhlola Olulula Lokukhetha

Ukhetha kanjani okulungileisigaba semoto ye-servoSebenzisa lolu hlu lokuhlola.

Isinyathelo 1: Chaza indawo yakho ye-EMI.Bhala phansi imishini eseduze. Ama-Welders, amaphampu, ama-laser, nama-drive kuyimithombo yomsindo onamandla. Hlola ibanga. Hlola imvamisa.

Isinyathelo sesi-2: Hlola ukuthi kungenzeka yini ukuphinda, hhayi nje ukulungiswa.Isigaba singaba nesisombululo esingu-0.1 µm. Kodwa uma ukuphindaphindwa kungu-5 µm, asikwazi ukubamba ukuqondanisa okungu-1 µm. Cela idatha yokuhlola ngaphansi kwe-EMI.

Isinyathelo 3: Buza ngokuvikela kanye nokubeka phansi.Ingabe izintambo zivikelwe? Isivikelo sixhunywe kanjani? Ingabe kukhona indawo ephansi? Ungasinikeza umdwebo womhlaba?

Isinyathelo 4: Buyekeza ukwakheka kwekhebula kanye nesixhumi.Izixhumi zensimbi zingcono kunepulasitiki. Zihlinzeka ngesivikelo. Hlola irediyasi yokugoba kwekhebula. Ukugoba okuqinile kungaphula isivikelo.

Isinyathelo 5: Cela idatha yokuhlolwa kwe-EMI.Cela idatha yokukhishwa kwegesi okukhishwe ngemisebe kanye nokuqhutshwa. Cela idatha yokuhlolwa kokuzivikela komzimba. Uma umhlinzeki engakwazi ukuyinikeza, qaphela.

Isinyathelo 6: Cabanga ngezindleko eziphelele.Ungaqhathanisi intengo yesiteji kuphela. Faka isikhathi sobunjiniyela, isikhathi sokulungisa amaphutha, isikhathi sokungasebenzi, kanye nokulahlekelwa yinzuzo.

Amakesi Angempela Avela Esitezi Sesitolo Sethu

SibonileI-EMI ezigabeni ezinenjiniezimbonini eziningi. Nazi izimo ezine zangempela.

Icala 1: Ukuhlolwa kwe-wafer ye-semiconductor.Ikhasimende lisebenzise indinganisoisigaba semoto ye-servo. Ikhamera ibone umsindo ongu-5 µm. Ukuphindeka kwesigaba kwakungu-3 µm. Ngemva kokufaka izintambo ezivikelwe kanye ne-ferrite core, umsindo wehle wafika ku-1 µm. Isivuno sithuthuke ngo-8%.

Icala 2: Ukulungiswa kwephaneli yokubonisa.Uhlelo lokulungisa izibonisi lwalunezinkinga zokushayela okungahleliwe njalo ngemijikelezo engu-20-30. Imbangela kwakuyi-ground loop phakathi kwesiteji ne-laser. I-single-point ground kanye ne-isolation transformer kwakulungisa. Amaphutha aphela ngokuphelele.

Icala 3: Ukuskena kwesilayidi sezokwelapha.Isikena sezokwelapha sasidinga ukunyakaza okubushelelezi. Isiteji sadlidliza ku-100 Hz. Imbangela kwakuwumsindo we-PWM ovela kudrayivu. Isihlungi esidlula kancane kanye nedrayivu ephansi ye-EMI kunciphise ukudlidliza ngo-90%.

Icala 4: Ukulungiswa kwe-laser.Ipulatifomu yokuqondanisa nge-laser yayinephutha lesikhundla esingu-10 µm. Ikhebula le-encoder lalivuliwe. Lalisebenza eduze kwekhebula lamandla elingu-220 V amamitha amathathu. Ngemva kokuhlukanisa izintambo nokusebenzisa ikhebula le-encoder elivikelwe, iphutha lehle laya ku-1.5 µm.

Imibuzo Evame Ukubuzwa

Ungakunciphisa Kanjani Ukuphazamiseka Kokulawula Ukunyakaza Ezigabeni Zemoto Ye-Servo Zezinkundla Zokuqondisa Okuzenzakalelayo Kwe-Optical?
Sebenzisa izintambo ezivikelwe. Hlukanisa amandla kanye nesignali. Gaya kahle. Faka izihlungi nama-ferrite. Khetha isigaba se-EMI esiphansi. Hlola nge-oscilloscope. Lezi zinyathelo zinciphisaukuphazamiseka kokulawula ukunyakazango-80% kuya ku-95% ezimweni eziningi.

Uyini umthombo omkhulu we-EMI esigabeni se-servo motor?
I-PWM servo drive ingumthombo omkhulu kunayo yonke. Izintambo zemoto zesibili. Izihibe eziphansi zesithathu.

Ngingakwazi yini ukulungisa i-EMI ngaphandle kokushintsha isiteji?
Yebo. Ungangeza izihlungi, ama-ferrite, kanye nezintambo ezivikelwe. Ungathuthukisa ukusekelwa kwesisekelo. Kodwa uma ukwakheka kwesiteji kukubi, ungathola ukuthuthukiswa okuyingxenye kuphela.

Kubiza malini isigaba se-servo motor ye-EMI ephansi?
Isigaba se-EMI esiphansi sibiza u-10% kuya ku-30% ngaphezu kwesigaba esijwayelekile. Intengo eqondile incike ekuhambeni, umthwalo, kanye nokunemba.

Ingabe ngidinga isigaba se-EMI esiphansi ukuze ngihlanze igumbi?
I-Cleanroom ayisusi i-EMI. Kodwa imishini ye-cleanroom ivame ukuzwela. Isigaba se-EMI esiphansi siyisinqumo esihle sokulungiswa kwe-optical ye-cleanroom.

Ngingayihlola kanjani i-EMI?
Sebenzisa i-oscilloscope yomsindo wesiginali. Sebenzisa i-EMI receiver yomsindo okhishwa imisebe. Hlola ikhamera, i-encoder, kanye ne-drive. Qhathanisa ngaphambi nangemva kokulungiswa ngakunye.

Kungani Sisebenza Nathi

Sesineminyaka engaphezu kwengu-9 sikuleli bhizinisi. Senza izigaba ezisebenzisa izandla nezinjini. Senza nezinkundla zokuqondisa ezizenzakalelayo. Sigxila ku-R&D, ekukhiqizeni, nasekuthengiseni. Siyaqonda i-EMI ngoba siyihlola nsuku zonke.

Okwethuisigaba semoto ye-servoizinketho zifaka:

Amasethi ekhebula le-EMI aphansi.

Izintambo ze-encoder ezivikelwe.

Izihlungi ze-EMI ezakhelwe ngaphakathi.

Ama-encoder ahlukile.

Idizayini yokusekela eyenziwe ngokwezifiso.

Idatha yokuhlola i-EMI uma iceliwe.

Asigcini nje ngokuthengisa isiteji. Sikusiza ukuxazulula yonke inkinga yokunyakaza. Uma unenkinga ye-EMI, sithumelele ukusetha kwakho. Singabuyekeza amakhebula akho, izilungiselelo zokusekela, kanye ne-drive. Singancoma isigaba se-EMI esiphansi esifanelana nesabelomali sakho.

Ake Sixoxe Ngenkinga Yakho Ye-EMI

Ingabe wakha ipulatifomu yokuqondanisa okuzenzakalelayo? Ukhathele yiniukuphazamiseka kokulawula ukunyakazaIngabe udinga i-isigaba semoto ye-servoesebenza efemini enomsindo?

Xhumana nathi namuhla. Sitshele ukuthi uhlose ukunemba kwakho, ibanga lokuhamba, umthwalo, kanye nendawo okuyo. Sizokunikeza isincomo esicacile. Sizokwabelana ngedatha yokuhlola kanye neseluleko sokukhetha. Masinciphise i-EMI futhi sithuthukise isivuno sakho.

Sithumelele i-imeyili manje. Thola ikhotheshini esheshayo. Xazulula inkinga yakho ye-EMI ngesigaba esakhelwe ukukhiqiza kwangempela.