Iyini i-unipolar stepper motor?

Incazelo kanye Nomqondo Oyisisekelo we-Unipolar Stepper Motors

Umsebenzi Oyisisekelo Wokumisa

I-unipolar stepper motor iyinjini kagesi engena-brushless, evumelanayo ehamba ngokunyuka kwama-angular, evumela ukuma okunembile ngaphandle kwempendulo ezinhlelweni eziningi. I-pulse ngayinye kagesi ethunyelwa kumotho ihambisana ne-engeli engaguquki yokuzungeza, efana no-1.8°, 7.5°, noma 15°. Ngokuphambene namamotho e-DC ajikelezayo ngokuqhubekayo uma enikwe amandla, i-unipolar stepper motor ihamba phambili isinyathelo ngesinyathelo, iyenze ibe ilungele ukulawula ukunyakaza lapho ukususwa kwe-angular noma komugqa kubalulekile.

Unipolar Winding Concept

Isici esichazayo salolu hlobo lwemoto i-unipolar winding topology. Ukujika kwesigaba ngasinye kunompompi ophakathi nendawo, ngokuvamile oxhunywe kumthombo oqondile, kuyilapho iziphetho ezimbili zekhoyili zishintshwa ngokushintshana zibe phansi ngama-transistors noma ama-MOSFET. Ngakho-ke i-current igeleza ohlangothini olulodwa kuphela engxenyeni ngayinye yekhoyili ngesikhathi. Ngenxa yalokhu kugeleza kwamanje okungaqondile ngesigamu-khoyili, isifunda sedrayivu silula kunaleso samamotho we-bipolar stepper, okumele ahlehlise indlela yamanje ngamakhoyili. Lokhu kulula kuyisizathu esikhulu sokuthi kungani amasistimu amaningi wefekthri namamojula we-wholesale drive asasebenzisa ukucushwa kwe-unipolar.

Izilinganiso Ezijwayelekile zikagesi nezomshini

Amamotho avamile we-unipolar stepper ayatholakala ngosayizi befreyimu njenge-NEMA 17, NEMA 23, ne-NEMA 34. Ama-currents esigaba esilinganiselwe ngokuvamile asukela ku-0.4 A kuya ku-3.0 A ngesigaba ngasinye, nama-voltage okunikezela phakathi kuka-5 V no-48 V kuye ngedizayini nohlobo lomshayeli. Ukubamba i-torque kungasuka ku-0.2 N·m kumayunithi amancane e-NEMA 17 ukuya ngaphezu kuka-3.0 N·m kumamodeli amakhulu we-NEMA 34. Ama-engeli esinyathelo angu-7.5° (izinyathelo ezingu-48 ngokuphenduka ngakunye) kanye no-1.8° (izinyathelo ezingu-200 ngokuphenduka ngakunye) avamile, nokunyathela okuncane okufinyeleleka kalula okufinyeleleka ngomshini wokushayela umshayeli.

Isakhiwo Sangaphakathi kanye Nokuhlelwa Kwekhoyili ku-Unipolar Motors

I-Stator ne-Rotor Configuration

Ngaphakathi, i-unipolar stepper motor iqukethe i-rotor enamazinyo eyenziwe ngezinto eziphezulu - ezikwazi ukungena kanye ne-laminated stator ephethe ama-windings wesigaba. I-stator ivame ukuhlukaniswa ngezigxobo eziningi, eziqoqwe ngezigaba. Lapho isigaba sinikezwa amandla, izigxobo zaso zakha iphethini yensimu kazibuthe eheha amazinyo e-rotor ekuqondeni. Ngokunika amandla izigaba ngokulandelana, i-rotor iqhubekela phambili ngezinyo elilodwa ngesikhathi, ikhiqize ukunyakaza okuyisici.

Isakhiwo Sokusonga Kwesigaba se-Unipolar

Kuhlelo olujwayelekile lwesine-isigaba se-unipolar, injini inamawindi amane, ngalinye linompompi omaphakathi. Ukucushwa okuyisithupha-okuholayo okuvame ukusetshenziswa embonini kufaka phakathi imikhondo emibili esigabeni ngasinye kanye nompompi omaphakathi wesigaba ngasinye kwezimbili eziyinhloko (A no-B). Ukucushwa kwezintambo okujwayelekile yilokhu:

• Isigaba A: A+, A−, thinta maphakathi CT-A
• Isigaba B: B+, B−, thinta maphakathi CT-B

Emiklamweni eminingi, i-CT-A ne-CT-B iboshelwe ndawonye ngaphakathi, idala i-five-lead motor. Ompompi abaphakathi nendawo baxhunywe ku-positive supply, futhi umshayeli ushintsha iziphetho ezinegethivu (A+, A−, B+, B−) ukuze zimiswe ngokulandelana. Lokhu kulungiselelwa kuvumela okwamanje ukuthi kugeleze ngokushintshana kuhhafu ngamunye wamajika esigaba, okukhiqiza ama-polarity kazibuthe ashintshanayo eduze kwe-stator ngaphandle kokuhlehlisa uxhumo lokunikezela lwangaphandle.

Izibalo zokuhola kanye nomthelela wohlelo lokusebenza

Ama-Unipolar stepper motors ngokuvamile ane:

• Imikhondo engu-5: umpompi ophakathi nendawo okwabelwana ngawo, ikhebula elula, ukuguquguquka okuncane kancane.
• Imikhondo engu-6: ompompi abahlukene besikhungo ngesigaba ngasinye, izinketho eziningi zokumisa.

Ukukhetha phakathi kwezinhlobo zomthofu ezi-5-6-kuthinta indlela injini engashayelwa ngayo. Isibonelo, injini engu-6-lead ingase ifakwe kumodi ye-quasi-bipolar ngokuziba ompompi abaphakathi nendawo nokusebenzisa ikhoyili egcwele, ukuthuthukisa i-torque ngezindleko zamasekhethi okushayela ayinkimbinkimbi. Umhlinzeki oqeqeshiwe uzovame ukucacisa ukumelana namakhoyili, i-inductance, namajika e-torque kumodi ngayinye yokuxhuma ukuze onjiniyela bakwazi ukukhetha izintambo ezihambisana nesivinini kanye nezidingo zetorque.

Isimiso sokuSebenza kanye nokusebenza kokulandelana kwesinyathelo

I-Angle Yesinyathelo NeJiyomethri Yamazinyo

I-angle yesinyathelo se-unipolar stepper motor inqunywa inani lamazinyo e-rotor kanye nenani lezigaba ze-stator. Ukucushwa okuvamile kuyinjini engu-200-nezinyathelo ezine-engeli engu-1.8°, efinyelelwa ngokusebenzisa amazinyo e-rotor angu-50 kanye nokuhlelwa kwe-stator kwesigaba esingu-4-. Ubudlelwano obuyisisekelo yilokhu:

I-angle yesinyathelo (amadigri) = 360 ° / (inani lamazinyo e-rotor × inombolo yezigaba).

Isibonelo, i-motor enamazinyo angu-48 we-rotor nezigaba ezi-4 ine-angle yesinyathelo engu-360 / (48 × 4) = 1.875 °. Ukwazi leli nani kubalulekile lapho uhumusha izinyathelo zemoto ekugudluzeni ngomugqa kusikulufa somthofu noma amasistimu ashayelwa ibhande.

Izindlela Zokunyathela Eziyisisekelo

Izindlela ezintathu eziyinhloko zokunyathela zivame ukusetshenziswa ngama-unipolar stepper motors:

• I-Wave drive (eyodwa-isigaba-on): Isigaba esisodwa kuphela esinikezwa amandla nganoma isiphi isikhathi. Lokhu kunciphisa ukusetshenziswa kwamandla kodwa kukhiqiza i-torque ephansi, ngokuvamile engaba ngu-70% we-torque egcwele-nezinyathelo.
• Okugcwele-isinyathelo (ezimbili-isigaba-on): Izigaba ezimbili zinikwa amandla kanye kanye. Le modi ikhiqiza itorque yokubamba ephakeme kakhulu futhi isetshenziswa kakhulu ekulawuleni izimboni, enetorque evamise ukuphinda izikhathi eziyi-1.4 kune-wave drive.
• Ingxenye-isinyathelo (ishintshanisa eyodwa/ezimbili-isigaba-on): Idrayivu ishintshana phakathi kwezifunda-isigaba-kuzodwa kanye nezimbili-isigaba-kwizifunda, okuphinda kabili inani lezikhundla ngokuphenduka ngakunye. I-200-step motor iba yidivayisi yezinyathelo ezingu-400 enokulungiswa okungu-0.9°.

Imodi yesigamu-yesinyathelo inciphisa kancane i-torque phakathi nesifunda-sesigaba-kuso kodwa inikeza ukunyakaza okushelelayo nokuma kahle ngaphandle kokushintsha izingxenye zomshini.

I-Microstepping ne-Smooth Motion

Nakuba amamotho e-unipolar evame ukuhlotshaniswa nokunyathela kwedijithali okulula, amasu e-microstepping angasetshenziswa ngokulawula amazinga amanje engxenyeni ngayinye-khoyili nge-PWM noma izishayeli zemodi-yamanje. Isibonelo, ngokulinganisa ukusatshalaliswa kwamanje kwe-sinusoidal, injini engu-1.8° ingayalwa ngokunyuka okungu-1/8 kwe-microstep, ikhiqize i-engeli yesinyathelo esebenzayo engu-0.225°. Empeleni, ukuhleleka komugqa kunqunyelwe i-hysteresis kazibuthe nokungqubuzana, kodwa i-microstepping kunciphisa kakhulu ukudlidliza nomsindo we-acoustic. Amabhodi amaningi wamanje omshayeli asekela okungenani i-1/8 noma i-1/16 microstepping yokucushwa kwe-unipolar.

Izimpawu Zogesi kanye Nezinhlaka Zokusebenza Ezibalulekile

Ukumelana, Ukungeniswa, kanye Nezilinganiso Zamanje

Imingcele ebalulekile yokusonta ihlanganisa ukumelana nesigaba (R) kanye ne-inductance (L). Injini ejwayelekile ye-NEMA 17 unipolar ingaba:

• Ukumelana nesigaba: 10 Ω ngesigamu-khoyili.
• I-inductance: 15 mH isigamu-khoyili.
• Isilinganiso samanje: 0.5 A ngesigamu-khoyili.

Ukumelana nesigaba kuchaza i-static yamanje ye-voltage enikeziwe yokusebenzisa umthetho we-Ohm (I = V / R). Isibonelo, ngokunikezwa okungu-12 V kanye nokujikajika okungu-10 Ω, ukuzinza kwethiyori-isimo samanje kungu-1.2 A, kodwa amadizayini angokoqobo avame ukusebenzisa amanje-amashayeli akhawulayo ukuze agcine amanje ku-0.5 A eshiwo ukuze avimbele ukushisa ngokweqile. I-inductance ithinta isikhathi sokukhuphuka kwamanje; i-inductance ephezulu ikhawulela isilinganiso esiphezulu sesinyathelo esisebenzisekayo ngoba esamanje asikwazi ukufinyelela inani layo elilinganiselwe ngaphambi kokuguqulwa okulandelayo.

I-Torque-Izici Zesivinini

I-torque iyehla njengoba izinga lesinyathelo likhuphuka ngenxa yokuncipha kwesilinganiso samanje kuma-windings. Ijika elivamile lenjini ye-unipolar emaphakathi -

• I-torque yokubamba (0 izinyathelo/s): 0.45 N·m.
• Imvamisa yokuqala-yokumisa (akukho mthwalo): 500–800 izinyathelo/s.
• Isilinganiso esikhulu sokudonsa-ukuphuma (ngokuqansa): 1500–2000 izinyathelo/s.

Ngezinyathelo ezingu-100/s, i-torque ingase ibe seduze nenani lokubamba, kodwa ezinyathelweni ezingu-1500/s ingase yehle ibe ngu-30–40% walelo nani. Lapho uklama amaphrofayili anyakazayo, amarempu okusheshisa kanye nokwehlisa isivinini abalulekile ukuze ugweme ukulahlekelwa ukuvumelanisa, ikakhulukazi ngemithwalo ephezulu ye-inertial.

Ukucatshangelwa kokushisa nokusebenza kahle

Ama-Unipolar stepper motors ngokuvamile ashayelwa kumaza abangela izinga lokushisa lekesi lenyuke kakhulu, ngokuvamile liye ku-70–80 °C ngaphansi komthwalo olinganiselwe oqhubekayo. Ukumelana nokushisa ukusuka ekujikeni kuya ku-ambient kuvamise ukuba kububanzi obungu-5–10 °C/W, kuye ngosayizi wohlaka nokukhwezwa. Onjiniyela kufanele baqinisekise ukungena komoya owanele noma ukushisisa ukushisa, ikakhulukazi lapho injini ifakwe ngaphakathi kwezivalekile. Ukusebenza kahle sekukonke kuvame ukuba nesizotha, ngokuvamile ngaphansi kuka-70%, njengoba amandla ahlakazeka njengokushisa kumawindi aphikisayo ngisho noma i-shaft inganyakazi. Umhlinzeki okhethekile angahlinzeka ngamajika ashisayo anemininingwane kanye nedatha ehlisayo ukuze asekele ukwakhiwa kwesistimu efanele.

Ama-Driver Circuits kanye Nezindlela Zokulawula Ezivamile

Transistor kanye MOSFET Ukushintsha Izigaba

Ngenxa yokuthi amamotho e-unipolar stepper adinga kuphela-okugeleza kwamanje kwezikhombisi-ndlela ngesigamu-khoyili, isigaba somshayeli singakhiwa kusuka kumaswishi alula aphansi-eceleni. Indlela evamile isebenzisa uxhaxha lwama-NPN transistors noma ama-N-channel MOSFET axhunywe phakathi kokuphela kwekhoyili ngayinye nendawo. Ompompi abaphakathi nendawo baxhunywe ku-positive supply, ngokuvamile engu-5-24 V. Ishaneli ngayinye yomshayeli kufanele ilinganiselwe okungenani u-150-200% wekhoyili elinganiselwe yamanje ukuze ibekezelele isikhashana. Emotweni elinganiselwe ku-0.8 A ngesigaba ngasinye, ama-MOSFET angu-2 ane-RDS(evuliwe) ephansi ayizinketho ezivamile.

Ukulawula Okunengqondo Nokulandelanisa

Ukulandelana kwesigaba kungase kusetshenziswe ngokunengqondo ecacile (isb., amashifu amarejista namasango anengqondo) noma ngezilawuli ezincane nama-IC abashayeli abazinikele. I-logic yokulawula kufanele:

• Khiqiza ukulandelana okulungile kwemodi yokunyathela ekhethiwe (igagasi, eligcwele, uhhafu, noma i-microstep).
• Nikeza amarempu okusheshisa nokuhlehlisa (isb., umugqa noma i-S-curve) ukuze ugweme izinyathelo ezigejiwe.
• Bamba isiqondisindlela ngokuhlehlisa ukuhleleka kokwenza kusebenze isigaba.

Izilawuli ezincane zesimanje zingakhiqiza ama-pulse wesinyathelo anemvamisa eguquguqukayo namaphethini wesigaba ngezibali-sikhathi namamojula we-PWM. Kuzinhlelo zokusebenza ezithengwe ngamashaneli athengwayo, amabhodi omshayeli ahlanganisiwe ahlanganisa izigaba zomqondo kanye namandla atholakala kabanzi, okwenza kube lula ukuhlanganiswa konjiniyela befekthri abashintshashintshayo.

Izici Zokuvikela Nokwethenjelwa

Isistimu yokushayela eqinile kufanele ihlanganise:

• Ama-Flyback diode noma ama-diode ahlanganisiwe ukuze abambe ama-voltage e-inductive.
• Inzwa yamanje ukuze ivikeleke kumashafu amile noma aminyene.
• Ukuvalwa kwe-undervoltage kanye nezinga lokushisa ngaphezulu kwemiklamo ethuthukisiwe.

Isibonelo, izinqamuleli zamanje zokuzwa esigabeni ngasinye zingalinganiswa ukuze isigaba samanje esingu-0.5 A sikhiqize ukwehla okungu-0.25 V. Isiqhathanisi noma i-ADC iqapha lawa ma-voltage futhi ilungise umjikelezo we-PWM ukuze igcine umfutho ongashintshi, njengoba kushintsha amandla kagesi noma izinga lokushisa elijikayo. Imininingwane yedatha yabahlinzeki ngokuvamile ishicilela izihloko zesekethe ezinconyiwe kanye namanani anomkhawulo walokhu kuvikela.

Izinzuzo ze-Unipolar Stepper Motor Design

I-Simplified Drive Electronics

Inzuzo eyinhloko yama-unipolar stepper motors ubulula be-drive circuitry. Ngenxa yokuthi injini ayifuni ukuhlehliswa kwamandla kunoma iyiphi ikhoyili, amasekhethi agcwele e-H-bridge awadingeki. Lokhu kunganciphisa ukubalwa kwezingxenye cishe ngohhafu uma kuqhathaniswa ne-bipolar drive efanayo. Isibonelo, isistimu ye-unipolar yesine-yesigaba ingasebenza ngokushintsha okune okuphansi-eceleni, kuyilapho ukucushwa kwe-bipolar kwezigaba ezimbili kuvame ukudinga amabhuloho amane agcwele H-, noma amaswishi ayisishiyagalombili. Lokhu lula kuholela esikhathini esiphansi sokuklama, indawo ye-PCB encishisiwe, nokuthembeka okuphezulu okuphelele.

Ukulahlekelwa Kokushintsha Okuphansi kanye ne-EMI

Njengoba isiphetho sekhoyili ngasinye sishintshelwa emhlabathini noma kwesokunxele sintanta kuphela, ukushintshashintsha kuqondile, okuholela ekuphazamisekeni okuphansi kwe-electromagnetic (EMI) kunezixazululo ze-high-frequency H-bridge. Amasistimu adinga ukuthotshelwa kwemithetho eqinile yokukhipha umoya angase athole kulula ukuphatha izakhiwo ze-unipolar, ikakhulukazi kumaza okunyathela amaphakathi (ngezansi kuka-2 kHz). Ukwengeza, ngenxa yokuthi amandla okushintsha ngokuvamile avalelwe kudivayisi eyodwa ikhoyili ngayinye kunebhuloho, izindawo ezishisayo zingabonakala kalula futhi kulula ukuzipholisa.

Izindleko kanye Nezinzuzo Zokuhlanganisa

Ama-Unipolar stepper motors avamise ukubiza-asebenza kahle ekuthengeni okuphezulu-ivolumu noma ama-wholesale, ikakhulukazi osayizi bozimele abancane nabamaphakathi abavame ukusetshenziswa kumaphrinta, okokusebenza kwasehhovisi, nemishini yemboni elula. Amahhanisi alula, izingxenye zamandla ezimbalwa, nezinqubo zokukhiqiza ezivuthiwe zinomthelela emananini aqhudelanayo ngeyunithi ngayinye. Kuma-OEM akha amaqoqo amakhulu amayunithi minyaka yonke, izinzuzo zezindleko kubashayeli, izixhumi, kanye nokunciphisa i-EMC zingadlula ukuncipha okumaphakathi kwe-torque de facto uma kuqhathaniswa nemiklamo ye-bipolar.

Imikhawulo kanye Nohwebo-Offs Versus Bipolar Motors

Ukusetshenziswa Kwetorque Kwehlisiwe

I-drawback eyinhloko yokucushwa kwe-unipolar ukuthi uhhafu kuphela wokujika kwesigaba ngasinye unikwa amandla nganoma yisiphi isikhathi. Ngenxa yokuthi ithusi elincane likhiqiza i-flux kazibuthe, itorque ngeyunithi ngayinye iphansi kunaleyo yenjini ye-bipolar esebenzisa ikhoyili egcwele. Isibonelo, i-unipolar NEMA 23 motor ingase inikeze i-torque engu-1.0 N·m yokubamba, kuyilapho enye imotho efana ne-bipolar ingafinyelela ku-1.4 N·m ngesilinganiso esifanayo samanje. Abaklami abaqondise ukuminyana kwetorque ephezulu noma usayizi wemoto oncishisiwe wetorque enikeziwe bavame ukukhetha izixazululo ze-bipolar.

Ukusebenza kahle kanye Nokuchithwa kwamandla

Uma kuqhutshwa uhhafu kuphela wekhoyili, ukumelana kuvamise ukuba uhhafu wekhoyili egcwele, okukhiqiza ukulahleka kwe-I²R okwengeziwe kwe-ampere-turn efanayo uma kuqhathaniswa nokusebenza kwe-bipolar. Ngenxa yalokho, injini ye-unipolar ingase isebenze ngokushisa kakhulu ekukhishweni kwetorque efanayo. Lokhu kungabeka izimfuneko eziqinile zokuphatha okushisayo noma ukwehliswa kwamanje ukuze kugcinwe amazinga okushisa amukelekayo okumazombezombe. Ezivalweni ezincane noma kumadivayisi avaliwe, ukusebenza kahle kwesistimu kukonke kungase kube ngamaphesenti amaningana aphansi kunohlelo oluqhathaniswayo lwe-bipolar, ikakhulukazi emijikelezweni yomsebenzi ophezulu.

Isivinini kanye nokuziphatha kwe-resonance

Ijika le-torque-speed lamamothoni amaningi e-unipolar lehla ngokushesha ngamazinga aphezulu esinyathelo. Ngaphezulu kwezinyathelo ezicishe zibe ngu-1000–1500 ngomzuzwana, i-torque ingase inganele ukugcina ukuvumelanisa kwemithwalo ephezulu-inertia ngaphandle kokunqwabelana ngokucophelela. Ukwengeza, ama-stepper motors ngokuvamile abonisa izindawo zokukhala, ngokuvamile phakathi kwezinyathelo eziyi-100 nezingu-300 ngomzuzwana. Ukucushwa kwe-unipolar kungase kubonise i-torque ezwakalayo kakhulu ngezindlela ezilula ezigcwele-ezizinyathelo. Le miphumela ingancishiswa nge-microstepping, damping mechanical (okufana nama-couplings e-elastomer), noma ukuhluka okuncane kwefrikhwensi yesinyathelo ukuze kugwenywe amabhendi e-resonance.

Izicelo Ezijwayelekile Nezimo Zokusetshenziswa Embonini

Ihhovisi, Abathengi, kanye Nezisetshenziswa Zezimboni Ezikhanyayo

Amamotho e-unipolar stepper anomlando omude kumaphrinta, emishinini yefeksi, izikena, namathuluzi afanayo lapho i-torque emaphakathi nesivinini kwanele, kanye nokulawula ukunyakaza okubiza-okuphumelelayo kuyadingeka. Ikhono lokuhlanganisa amasekhethi abashayeli alula ngokuqondile kumabhodi okulawula awenza athandeke kumadivayisi ahlangene. Ama-engeli angu-7.5° noma angu-1.8° ahlanganiswe namagiya aphansi angemuva noma izikulufu zokuhola zingaveza ukuphakelwa kwephepha okunembayo kanye nokuma kwenqola ngezindleko eziphansi. Imishini eminingi enjalo ithola amamotho kanye nezishayeli ngamashaneli athengiswayo ukuze kwehliswe izindleko zeyunithi ngayinye.

I-Factory Automation kanye ne-Instrumentation

Ezilungiselelweni zasefekthri, amamotho e-unipolar stepper avame ukusetshenziswa kumathebula ezinkomba, ama-valve actuators, amathuluzi aselabhorethri, kanye ne-light-yokuthutha umthwalo. Izinhlelo zokusebenza ezidinga ukuma okunembile okuphindaphindayo ngaphezu kwemivimbo emifushane zizuza ekuziphatheni kwazo okunqumayo. Isibonelo, indlela yokukhomba enezindawo eziyi-12 inguquko ngayinye ingenziwa ngenjini engu-1.8° kanye nokwehliswa kwegiya; Izinyathelo ezingu-200 × isilinganiso segiya singahlelwa ngendlela yokuthi izinyathelo ezingu-16–32 ncamashi zifanelana nendawo ngayinye yenkomba, kube lula ukulawula ukucabanga. Ama-actuator ahlangene asetshenziswa kuzinto zokuhlola namadivayisi wokulinganisa ngokuvamile athembela kumamotho e-unipolar ngenxa yokuthembeka kwawo okuqinisekisiwe nokuxhumanisa okulula.

Amapulatifomu ezemfundo kanye ne-Prototyping

Ngenxa yobulula bawo obuhlobene, ama-unipolar stepper motors asetshenziswa kakhulu kumathuluzi okufundisa, amabhodi okuthuthukisa, kanye nokusetha kokuhlola. Abafundi bangaqonda ubudlelwano phakathi kokwenziwa kusebenze kwesigaba kanye nesimo se-shaft ngaphandle kokungena ku-H-bridge circuitry. Amamojula amaningi e-entry-leveli ahlinzeka ngamatheminali ngezikulufu noma izixhumi ezilula ezifanele izintambo ezisheshayo, futhi ukulawula ngezikhonkwane ze-I/O ze-microcontroller kuqondile. Umhlinzeki onokwethenjelwa wamakhithi anjalo ngokuvamile unikeza izinjini, abashayeli, namadokhumenti njengephakheji elihlanganisiwe ukuze afinyeze ijika lokufunda kubasebenzisi abasha.

Izinkombandlela Zokukhetha kanye Nokucatshangelwa Kwedizayini Ebalulekile

Ukufanisa i-Torque ne-Inertia

Ukukhetha injini efanelekile kudinga ukufanisa umthamo wetorque yayo ne-inertia yomthwalo kanye nokungqubuzana. Njengomthetho wesithupha, inertia yomthwalo ebonisiwe ku-motor shaft akufanele idlule izikhathi ezingu-10 ku-rotor inertia yemoto ukuze kugcinwe ukulawula okusabelayo ngaphandle kokweqiwa izinyathelo. Isibonelo, uma i-rotor inertia ingu-80 g·cm², umthwalo obonisiwe kufanele ube ngaphansi kuka-800 g·cm². Uma usebenzisa amabhande, amagiya, noma izikulufu zokuhola, onjiniyela kufanele baguqule ngokucophelela isisindo somugqa sibe inertia ejikelezayo besebenzisa amafomula ajwayelekile ukuze kuqinisekiswe ukusebenza okuguquguqukayo nokwethembeka.

Isixhumi esibonakalayo sikagesi kanye Nezingqinamba Zokuhlinzeka

I-voltage yokuhlinzeka etholakalayo kanye ne-current yizingqinamba ezibalulekile. Uma isistimu ingahlinzeka ngo-24 V ku-2 A ngesigaba ngasinye, abaklami bangakhetha injini enokumelana nesigaba ku-6–12 Ω ububanzi futhi ikale yamanje ngaphansi kuka-2 A ukuze ivumele imajini ethile. Amadizayini aphezulu-amandla kagesi, aphansi-amanje avame ukwenza kangcono ngesivinini esikhulu ngenxa yokuthi amandla kagesi amakhulu anqoba ukusabela kwe-inductive ngempumelelo kakhulu. Kodwa-ke, izidingo zokuphepha nokuzihlukanisa ezinhlelweni zasefekthri zinganciphisa amandla kagesi. Vala ukusebenzisana nomkhiqizi womshayeli noma umphakeli kuqinisekisa ukuthi izilinganiso zomshayeli namapharamitha emoto kuyahambisana.

Ukucatshangelwa Kwemvelo kanye Nempilo Yonke

Izinga lokushisa le-ambient, umswakama, ukushaqeka, nokudlidliza konke kunomthelela empilweni yemoto. Amabhereli ngokuvamile alinganiselwa amashumi ezinkulungwane zamahora okusebenza emithwalweni elinganiselwe ye-radial ne-axial. Uma injini kufanele isebenze ezindaweni ezinothuli noma ezigqwalile, kungase kudingeke indlu ebiyelwe noma ene-IP-rated. Ama-Unipolar stepper motors anama-bearings avaliwe kanye nezinhlelo zokufaka eziqinile (ikilasi B noma F) angagcina ukusebenza iminyaka eminingi ezinhlelweni ezizenzakalelayo ezizenzakalelayo. Amadokhumenti avela efekthri yezimoto kufanele acacise ukukhuphuka kwezinga lokushisa okuvumelekile, ukumelana nokushisa, namazinga okuhlola, okunikeza amandla onjiniyela ukwenza izilinganiso zesikhathi sempilo yobuningi.

Ukufaka, Izintambo, kanye Nokugcina Imikhuba Engcono Kakhulu

Izintambo ezilungile kanye nokuhlonzwa kwesigaba

Izintambo ezifanele zibalulekile. Ngamamotho angu-6-lead, onjiniyela kufanele babone ama-coil halves ngokulinganisa ukumelana. Isibonelo, ukukala u-5 Ω phakathi kwemithombe emibili kanye no-2.5 ​​Ω phakathi kokukodwa kwaleyo mikhondo kanye nokwesithathu kubonisa ukuthi ukuhola wesithathu wumpompi ophakathi nendawo. Amaphutha avamile ahlanganisa izigaba zokuphambana - ukuxhuma noma ukushintshanisa iziphetho zekhoyili, okungaholela ekunyakazeni okungalungile noma ukwehluleka ngokuphelele ukuqalisa. Ukupheya kwesigaba sokulebula (A+, A−, B+, B-) kanye nompompi baphakathi nendawo phakathi nokufakwa kunciphisa kakhulu isikhathi sokuxazulula inkinga kamuva.

I-Cabling, Grounding, kanye ne-EMC

Imizila yezimoto kufanele ibe amapheya asontekile noma izintambo ezivikelwe ukuze zigijime isikhathi eside, ikakhulukazi ngaphezu kwamamitha angu-1–2, ukuze kuncishiswe ukuhlangana komsindo kumasekhethi okulawula azwelayo. Ukunqanyulwa kwesihlangu kufanele kubekwe eceleni ukuze kugwenywe izihibe zaphansi. Abashayeli bamandla kumele babelane ngereferensi yesisekelo esiqinile ne-control electronics. Kumasistimu e-multi-axis, ukugxilisa inkanyezi ngokucophelela nokuhlukaniswa kwezintambo zesignali ephezulu-yamanje neziphansi-zisiza ukugcina ukuthobela kwe-EMC nokuvimbela amaphutha esinyathelo angahleliwe. Umhlinzeki onolwazi angancoma izinhlobo zekhebula ezijwayelekile kanye nemindeni yesixhumi elungele indawo yohlelo lokusebenza.

Ukuhlolwa Okujwayelekile kanye Nokuxilongwa Kwephutha

Ukunakekela okuvamile kuhlanganisa ukuhlola amabhawodi akhwelayo ukuze axege, ukuhlola izixhumi ukuze kutholwe ukugqwala, nokulinganisa ukumelana namajika ukuze kutholwe izimpawu zangaphambi kwesikhathi zomonakalo wokushisisa. Isibonelo, ukwehla okungaphezulu kokungu-10% kokumelana okulinganiselwe uma kuqhathaniswa nokucaciswa kwefekthri kwasekuqaleni kungase kubonise ukujika okufushane, kuyilapho ukukhuphuka okuphawulekayo kungabonisa izintambo eziphukile noma ukuxhumeka okubi. Ukuthwebula izithombe ezishisayo kungaveza izindawo ezishisayo ezidalwe ukwehluleka kwekhoyili noma izinkinga zomshayeli. Ukusebenzisa amashejuli okuhlola ngezikhathi ezithile kunciphisa isikhathi sokuphumula esingahleliwe kumasistimu azenzakalelayo.

I-Maxtech Nikeza Izixazululo

I-Maxtech inikezela ngohlu oluphelele lwamamothoni e-unipolar stepper, abashayeli, nezinketho zekhebula eziklanyelwe izidingo zezimboni neze-OEM. Kusukela kumayunithi ahlangene we-NEMA angu-17 ukuya phezulu-i-torque ye-NEMA 34 yezixazululo, umugqa womkhiqizo wethu uhlanganisa ama-currents esigaba ukusuka ku-0.4 A ukuya ku-4.0 A futhi ubambe ama-torque afika ku-3.5 N·m. Amaqembu onjiniyela athola amajika e-torque-speed enemininingwane, idatha eshisayo, nemidwebo yezintambo ukuze kusheshiswe idizayini. Kungakhathaliseki ukuthi udinga iqoqo lesibonelo noma elikhulu-ukunikezwa kwevolumu enkulu, i-Maxtech isebenza njengomhlinzeki oyedwa-owumthombo futhi ihlanganisa amaqoqo angokwezifiso avela efekthri yethu, ikusize ufinyelele ukunyakaza okunembile, okuphindaphindwayo ngezindleko eziphelele nokwethembeka.