Yintoni unipolar stepper motor?

Inkcazo kunye neSiseko seSiseko se-Unipolar Stepper Motors

Umsebenzi osisiseko wokumiswa

I-unipolar stepper motor yi-brushless, i-synchronous motor motor ehamba ngokunyuka kwe-angular, ivumela indawo echanekileyo ngaphandle kwempendulo kwizicelo ezininzi. I-pulse nganye yombane ethunyelwe kwi-motor ihambelana ne-angle esisigxina yokujikeleza, njenge-1.8 °, 7.5 °, okanye i-15 °. Ngokuchaseneyo neenjini ze-DC ezijikeleza ngokuqhubekayo xa zinikwe amandla, i-unipolar stepper motor iqhubela phambili inyathelo ngenyathelo, iyenza ilungele ulawulo lwentshukumo apho ukususwa okuchanekileyo kwe-angular okanye umgca kubalulekile.

Unipolar Winding Concept

Uphawu oluchazayo loluhlobo lwemoto yi-unipolar winding topology. Ukujika kwesigaba ngasinye kunompompo oseziko, oqhele ukuqhagamshelwa kubonelelo olulungileyo, ngelixa iziphelo ezimbini zekhoyili zitshintshelwa ngokutshintshanayo zibe phantsi ngeetransistors okanye iiMOSFET. I-current ke ngoko iqukuqela kwicala elinye kuphela kwisiqingatha ngasinye sekhoyili ngexesha. Ngenxa yokuhamba ngoku unidirectional ngoku ngesiqingatha - ikhoyili, isekethe yedrive ilula kunaleyo yeemotor ze-bipolar stepper, ekufuneka zijike ulwalathiso lwangoku ngeekhoyili. Oku kulula sesona sizathu siphambili sokuba kutheni iinkqubo ezininzi zefektri kunye neemodyuli zedrive ezithengiswayo zisasebenzisa ulungelelwaniso lwe-unipolar.

Imilinganiselo yoMbane kunye neMechanical

Iimotor ze-unipolar stepper eziqhelekileyo zifumaneka kwiisayizi zesakhelo ezifana ne-NEMA 17, i-NEMA 23, kunye ne-NEMA 34. Imilinganiselo yesigaba esilinganisiweyo ihlala isuka kwi-0.4 A ukuya kwi-3.0 A ngesigaba ngasinye, kunye ne-voltage yokubonelela phakathi kwe-5 V kunye ne-48 V ngokuxhomekeke kuyilo kunye nohlobo lomqhubi. Ukubamba i-torque kunokusuka kwi-0.2 N · m kwiiyunithi ezincinci ze-NEMA ezili-17 ukuya ngaphezulu kwe-3.0 N·m kwiimodeli ezinkulu ze-NEMA 34. Ii-engile zenyathelo le-7.5 ° (izinyuko ezingama-48 kwi-revolution) kunye ne-1.8 ° (amanyathelo angama-200 kwi-revolution) ziqhelekile, kunye ne-finer microstepping enokufezekiswa ngomqhubi we-elektroniki.

Ulwakhiwo lwangaphakathi kunye noLungiselelo lweCoil kwiiMotor Unipolar

Uqwalaselo lweStator kunye neRotor

Ngaphakathi, i-unipolar stepper motor iqukethe i-rotor enamazinyo eyenziwe kwi-high-permeability material kunye ne-laminated stator ephethe i-windings yesigaba. I-stator ngokuqhelekileyo yahlulahlulwe kwiipali ezininzi, ezifakwe kwizigaba. Xa isigaba sinikwe amandla, izibonda zaso zenza ipateni yamagnetic field eyenza amazinyo e-rotor alungelelanise. Ngokunika amandla izigaba ngokulandelelana, i-rotor iqhubela phambili i-tooth pitch enye ngexesha, ivelisa uphawu lokunyathela.

UYilo lweSigaba se-Unipolar Winding

Kumgangatho wesine-kwisigaba se-unipolar, i-motor ine-windings ezine, nganye inempompo esembindini. Ulungelelwaniso oluphambili lwesithandathu oludla ngokusetyenziswa kushishino lubandakanya iinkokeli ezimbini kwisiphelo sesigaba ngasinye kunye nempompo yaseziko ngalinye kwisigaba ngasinye ezibini eziphambili (A no-B). Ulungelelwaniso lweingcingo oluqhelekileyo lu:

• Inqanaba A: A+, A−, itephu embindini CT-A
• Inqanaba B: B+, B−, itephu embindini CT-B

Kuyilo oluninzi, i-CT-A kunye ne-CT-B zidityaniswe kunye ngaphakathi, zenza i-five-lead motor. Iimpompo zaseziko ziqhagamshelwe kunikezelo olulungileyo, kwaye umqhubi utshintsha iziphelo ezilandulayo (A+, A−, B+, B-) phantsi ngokulandelelana. Olu lungiselelo luvumela umsinga ukuba uqukuqele ngokutshintshanayo kwisiqingatha ngasinye sokujija kwesigaba, ukuvelisa iipolar ezitshintshanayo zemagnethi ecaleni kwestator ngaphandle kokubuyisela umva uqhagamshelwano lonikezelo lwangaphandle.

Amanani okuKhokela kunye neMpembelelo yokuSebenza

Iinjini ze-Unipolar stepper zihlala zine:

• I-5 ikhokelela: impompo ephakathi ekwabelwana ngayo, ikhebhuli elula, ukuguquguquka okuncinci.
• I-6 ikhokelela: iitephu zamaziko ahlukeneyo ngesigaba ngasinye, iinketho ezininzi zoqwalaselo.

Ukhetho phakathi kwe-5-lead kunye ne-6-intlobo ze-lead ichaphazela indlela injini enokuqhutywa ngayo. Umzekelo, i-6-lead motor inokudityaniswa kwimo ye-quasi-bipolar ngokungahoyi iimpompo eziseziko kunye nokusebenzisa icoil epheleleyo, ukuphucula i-torque ngeendleko zeesekethe zokuqhuba ezintsonkothileyo. Umthengisi oqeqeshiweyo uya kuhlala echaza ukuchasana kwekhoyili, i-inductance, kunye ne-torque curves kwimowudi yoqhagamshelo nganye ukuze iinjineli zikwazi ukukhetha i-wiring ukuhambelana nesantya kunye neemfuno zetorque.

Umgaqo wokuSebenza kunye nokuSebenza ngokulandelelana kweNyathelo

Inyathelo leengile kunye nejiyometri yezinyo

I-angle yesinyathelo se-unipolar stepper motor inqunywe ngenani lamazinyo e-rotor kunye nenani lezigaba ze-stator. Ukucwangciswa okuqhelekileyo yi-200-motor yesinyathelo nge-1.8 ° i-angle yesinyathelo, ephunyezwe ngokusebenzisa amazinyo angama-50 e-rotor kunye ne-4 - ilungiselelo le-stator yesigaba. Ubudlelwane obusisiseko bu:

I-angle yenyathelo (iidigri) = 360 ° / (inani lamazinyo e-rotor × inani lezigaba).

Ngokomzekelo, i-motor enamazinyo angama-48 kunye nezigaba ezi-4 zine-angle yesinyathelo se-360 / (48 × 4) = 1.875 °. Ukwazi eli xabiso kubalulekile xa uguqulela amanyathelo emoto kwi-linear displacement kwi-lead screw okanye ibhanti-eqhutywayo.

Iindlela zokunyathela ezisisiseko

Iindlela ezintathu eziphambili zokunyathela zidla ngokusetyenziswa ngeenjini ze-unipolar stepper:

• I-Wave drive (enye-isigaba-on): Inqanaba elinye kuphela elinikwa amandla nangaliphi na ixesha. Oku kunciphisa ukusetyenziswa kwamandla kodwa kuvelisa itorque esezantsi, ngokuqhelekileyo malunga ne-70% ye-full-step torque.
• Full-inyathelo (isibini-isigaba-on): Izigaba ezibini zenziwa amandla ngaxeshanye. Le ndlela ivelisa i-torque ephezulu yokubamba kwaye iyona nto isetyenziswa kakhulu kulawulo lwamashishini, kunye ne-torque ngokuqhelekileyo ngamaxesha e-1.4 ye-wave drive.
• Isiqingatha-inqanaba (sitshintshana esinye/ezimbini-isigaba-on): Uqhubo lutshintshana phakathi kwesinye-isigaba-kwezimbini-kwinqanaba-kwilizwe, liphinda kabini inani lezikhundla kwirevolution nganye. A 200-step motor iba 400-isixhobo inyathelo nge 0.9 ° isisombululo.

Isiqingatha-imowudi yenyathelo inciphisa kancinane torque ngexesha elinye-kwinqanaba-kwilizwe kodwa ibonelela ngentshukumo egudileyo kunye nokumiswa okucokisekileyo ngaphandle kokutshintsha amacandelo oomatshini.

I-Microstepping kunye ne-Smooth Motion

Nangona iinjini ze-unipolar zihlala zinxulunyaniswa nokunyathela okulula kwedijithali, ubuchule be-microstepping bunokusetyenziswa ngokulawula amanqanaba akhoyo kwisiqingatha ngasinye - ikhoyili nge-PWM okanye yangoku-abaqhubi bemowudi. Ngokomzekelo, ngokumalunga nokusabalalisa kwangoku kwe-sinusoidal, i-motor 1.8 ° inokuyalelwa kwi-1/8 microstep increments, ivelise i-angle yesinyathelo esisebenzayo se-0.225 °. Ngokwesiqhelo, umgca wokubeka indawo ukhawulelwe yi-hysteresis yamagnetic kunye nokukhuhlana, kodwa i-microstepping kunciphisa kakhulu ukungcangcazela kunye nengxolo ye-acoustic. Uninzi lweebhodi zabaqhubi zanamhlanje zixhasa ubuncinci i-1/8 okanye i-1/16 microstepping yoqwalaselo lwe-unipolar.

Iimpawu zoMbane kunye neeParameters eziphambili zokuSebenza

Ukuchasa, ukunyanzeliswa, kunye noHlelo lwangoku

Iiparameters zokucima okubalulekileyo ziquka ukuchasana kwesigaba (R) kunye ne-inductance (L). Injini eqhelekileyo ye-NEMA 17 ye-unipolar inokuba:

• Ukumelana nenqanaba: 10 Ω ngesiqingatha-khoyili.
• I-inductance: 15 mH ngesiqingatha - ikhoyili.
• Ulinganiso lwangoku: 0.5 A ngesiqingatha-khoyili.

Ukuxhatshazwa kwesigaba kuchaza i-static current ye-voltage yonikezelo olunikeziweyo usebenzisa umthetho we-Ohm (I = V / R). Umzekelo, ngonikezelo lwe-12 V kunye ne-10 Ω ukujikajika, ithiyori ezinzile-imeko yangoku yi-1.2 A, kodwa uyilo olusebenzayo luhlala lusebenzisa okwangoku-ukunciphisa abaqhubi ukugcina okwangoku ku-0.5 A echaziweyo ukunqanda ukushisa okugqithisileyo. I-inductance ichaphazela ixesha lokunyuka kwangoku; i-inductance ephezulu ibeka umda wenqanaba eliphezulu elisebenzisekayo ngenxa yokuba okwangoku ayikwazi ukufikelela kwixabiso layo elilinganisiweyo ngaphambi kokuguqulwa okulandelayo.

I-Torque-Iimpawu zesantya

I-torque iyancipha njengoko isantya sinyuka ngenxa yokunciphisa umndilili wangoku kwii-windings. Ijiko eliqhelekileyo lenjini ye-unipolar ephakathi - ubungakanani bunokubonisa:

• Ukubamba itorque (0 amanyathelo/s): 0.45 N · m.
• Ukuqalisa-ukumisa amaza (akukho mthwalo): 500–800 amanyathelo/s.
• Esona santya siphezulu sokutsala-ukuphuma (kunye neramping): 1500–2000 amanyathelo/s.

Ngamanyathelo angama-100 / s, i-torque ingaba kufuphi nexabiso lokubamba, kodwa kwi-1500 amanyathelo / s inokuhla ukuya kwi-30-40% yelo xabiso. Xa uyila iiprofayili ezishukumayo, ukukhawuleza kunye nokunciphisa iirampu kubalulekile ukuphepha ukulahlekelwa yi-synchronism, ngakumbi ngemithwalo ephezulu ye-inertial.

Ukuqwalaselwa kweThermal kunye nokusebenza kakuhle

Iimotor ze-Unipolar stepper zihlala ziqhutywa kwimisinga ebangela ukuba imeko yobushushu inyuke kakhulu, rhoqo ukuya kuma-70–80 °C phantsi komthwalo othe kratya. Ukumelana ne-Thermal ukusuka ekujikeni ukuya kwi-ambient ngokuqhelekileyo kuluhlu lwe-5-10 °C / W, kuxhomekeke kubukhulu befreyimu kunye nokunyuka. Iinjineli kufuneka ziqinisekise ukungena komoya okwaneleyo okanye ukutshisa, ngakumbi xa i-motor ifakwe ngaphakathi kweendawo ezivaliweyo. Ubuchule bubonke buthanda ukuthozama, amaxesha amaninzi ngaphantsi kwe-70%, njengoko amandla achithwa njengobushushu kwiijiko ezixhathisayo naxa ishafti ingashukumi. Umthengisi okhethekileyo unokubonelela ngee-curves ze-thermal ezineenkcukacha kunye nokunciphisa idatha ukuxhasa uyilo olufanelekileyo lwenkqubo.

Iisekethe zoMqhubi kunye neendlela zokulawula eziqhelekileyo

I-Transistor kunye ne-MOSFET Amanqanaba oTshintsho

Ngenxa yokuba iimotor ze-unipolar stepper zifuna enye kuphela - isalathiso sokuhamba ngoku kwisiqingatha ngasinye - ikhoyili, inqanaba lomqhubi linokwakhiwa ukusuka kwi-low low - icala lokutshintsha. Indlela eqhelekileyo isebenzisa uluhlu lweetransistors zeNPN okanye i-N-channel MOSFETs eziqhagamshelwe phakathi kwesiphelo sekhoyili kunye nomhlaba. Iimpompo zaseziko ziqhagamshelwe kunikezelo olulungileyo, ngokuqhelekileyo i-5-24 V. Itshaneli yomqhubi ngamnye kufuneka ilinganiswe ubuncinane kwi-150-200% ye-coil yangoku yokunyamezela ukunyamezela okudlulayo. Kwimoto ebekwe kwi-0.8 A ngesigaba ngasinye, i-2 A MOSFETs ene-RDS ephantsi (kwi) lukhetho oluqhelekileyo.

Ulawulo lweNgqiqo kunye nolandelelwano

Ukulandelelana kwesigaba kunokuphunyezwa mhlawumbi ngengqiqo ecacileyo (umzekelo, iirejista zeshifti kunye namasango engqiqo) okanye nge-microcontrollers kunye nee-IC zabaqhubi abazinikeleyo. Ingqiqo yolawulo kufuneka:

• Yenza ulandelelwano oluchanekileyo lwendlela yokunyathela ekhethiweyo (i-wave, igcwele, isiqingatha, okanye i-microstep).
• Ukubonelela ngesantya kunye neerempu zokunciphisa (umzekelo, umgca okanye i-S - ijika) ukuphepha amanyathelo aphosiweyo.
• Phatha ulawulo lwesalathiso ngokubuyisela umva umyalelo wokuvula isigaba.

I-microcontrollers yanamhlanje inokuvelisa i-pulses yesinyathelo kunye ne-adjustable frequency kunye neepateni zesigaba ngokusebenzisa ixesha kunye neemodyuli ze-PWM. Kwizicelo ezithengiweyo ngeeshaneli ezithengiswayo, iibhodi zomqhubi ezidibeneyo ezidibanisa ingqiqo kunye nezigaba zamandla zifumaneka ngokubanzi, ukwenza lula ukuhlanganiswa kweenjineli ze-automation factory.

Iimpawu zoKhuselo kunye nokuthembeka

Inkqubo yomqhubi owomeleleyo kufuneka ibandakanye:

• I-Flyback diodes okanye idiode ezidityanisiweyo zokuphatha i-inductive voltage spikes.
• Ukuziva okugqithileyo ukukhusela kwiishafu ezimileyo okanye ezixineneyo.
• Ukuvalwa kwe-Undervoltage kunye nobushushu obugqithisileyo kuyilo oluphambili.

Ngokomzekelo, i-resistors yangoku yokuva kwisigaba ngasinye inokulinganiswa ukuze i-0.5 A isigaba sangoku sivelise i-0.25 V yehla. Umthelekisi okanye i-ADC ibeka iliso kula mandla ombane kwaye ihlengahlengise umjikelo womsebenzi we-PWM ukuze igcine ikhoyo ngoku, nanjengoko umbane wobonelelo okanye ubushushu obujikelezayo butshintsha. Ababoneleli beenkcukacha zedatha bapapasha izihloko zesekethe ezicetyiswayo kunye namaxabiso alinganiselweyo kolu khuseleko.

Izinto eziluncedo kuYilo lweeMoto zeUnipolar Stepper

Eyenziwe Lula Drive Electronics

Inzuzo ephambili yeenjini ze-unipolar stepper kukulula kwe-drive circuitry. Ngenxa yokuba i-motor ayifuni ukuguqulwa kwangoku kuyo nayiphi na ikhoyili, iisekethe ezigcweleyo ze-H - zebhulorho aziyomfuneko. Oku kunokunciphisa ubalo lwamacandelo phantse ngesiqingatha xa kuthelekiswa ne-bipolar drive ethelekisekayo. Umzekelo, inkqubo yesine-yesigaba se-unipolar inokusebenza ngezine ezisezantsi- zokutshintsha kwecala, ngelixa uqwalaselo lwe-bipolar lwesigaba sesibini luhlala lufuna iibhulorho ezine ezigcweleyo, okanye izitshixo ezisibhozo. Oku kulula kukhokelela kwixesha loyilo elisezantsi, indawo yePCB encitshisiweyo, kunye nokuthembeka okuphezulu ngokubanzi.

Iilahleko zokuTshintsho ezisezantsi kunye ne-EMI

Ukusukela ukuba isiphelo sekhoyili ngasinye sitshintshelwa kuphela emhlabeni okanye ekhohlo sidadayo, utshintsho olutshintshayo luthe tye ngokuthe ngqo, lukhokelela kuphazamiseko olusezantsi lwe-electromagnetic (EMI) kunezinye izisombululo eziphezulu - ze-frequency H - zebhulorho. Iinkqubo ezifuna ukuthotyelwa kwemimiselo engqongqo yokukhutshwa kwezinto ezikhutshwayo zinokufumana ulwakhiwo lwe-unipolar lula ukulawula, ngakumbi kwi-moderate step frequencies (ngaphantsi kwe-2 kHz). Ukongeza, ngenxa yokuba amandla okutshintsha avalelwe kakhulu kwisixhobo esinye kwikhoyili nganye kunebhulorho, iindawo ezishushu ezishushu zinokuqikelelwa ngakumbi kwaye kulula ukuzipholisa.

IiNdleko kunye neNzuzo zokuDityaniswa

Iinjini ze-Unipolar stepper zihlala zinexabiso-zisebenza ngokuphezulu-umthamo okanye ukuthengwa kwevenkile, ngakumbi kubungakanani besakhelo esincinci naphakathi esiqhele ukusetyenziswa kubashicileli, izixhobo zeofisi, kunye noomatshini abalula boshishino. Iintambo ezilula, amacandelo amandla ambalwa, kunye neenkqubo zemveliso esele zikhulile zinegalelo kumaxabiso akhuphisanayo kwiyunithi nganye. Kwii-OEMs ezakha iibhetshi ezinkulu zeeyunithi ngonyaka, inzuzo yeendleko kubaqhubi, iziqhagamshelo, kunye nokunciphisa i-EMC kunokodlula ukucutha okuphakathi kwi-torque de facto xa kuthelekiswa noyilo lwe-bipolar.

Unyino kunye noRhwebo-Izithintelo ngokuchasene neBipolar Motors

Ukuncitshiswa kokusetyenziswa kweTorque

I-drawback eyintloko yokwakheka kwe-unipolar kukuba kuphela sisiqingatha somjikelezo wesigaba ngasinye esinamandla nangaliphi na ixesha. Ngenxa yokuba ubhedu obuncinci buvelisa i-flux yamagnetic, i-torque nganye yeyunithi iphantsi kunaleyo ye-bipolar motor ethelekisayo esebenzisa ikhoyili epheleleyo. Umzekelo, i-Unipolar NEMA 23 motor inokubonelela nge-1.0 N·m yokubamba itorque, ngelixa enye enye i-bipolar motor inokufikelela kwi-1.4 N·m kwinqanaba elifanayo langoku. Abaqulunqi abajolise kuxinaniso lwetorque ephezulu okanye ukunciphisa ubungakanani bemoto kwitorque enikiweyo bahlala bethanda izisombululo zebipolar.

Ukusebenza kakuhle kunye nokuchithwa kwamandla

Xa kuphela isiqingatha sekhoyili siqhuba, ukuxhathisa ngokuqhelekileyo kuba sisiqingatha sekhoyili epheleleyo, kuvelisa ilahleko ye-I²R eninzi ye-ampere efanayo-ujiko xa kuthelekiswa nokusebenza kwe-bipolar. Ngenxa yoko, i-motor ye-unipolar inokuhamba ishushu ngakumbi kwimveliso yetorque elinganayo. Oku kunokumisela iimfuno ezingqongqo zolawulo lobushushu okanye ukuthotywa kwangoku ukugcina amaqondo obushushu amkelekileyo avuthuzayo. Kwiindawo ezivaliweyo ezincinci okanye izixhobo ezitywiniweyo, ukusebenza kakuhle kwenkqubo kusenokuba ngamanqaku amaninzi epesenti angaphantsi kunenkqubo ethelekisekayo ye-bipolar, ngakumbi kumjikelo womsebenzi ophezulu.

Isantya kunye nokuziphatha kweResonance

Isantya se-torque-isantya seenjini ezininzi ze-unipolar sehla ngokukhawuleza kumanqanaba aphezulu. Ngaphezulu malunga ne-1000-1500 amanyathelo ngesekhondi, i-torque inokwanela ukugcina ulungelelwaniso oluphezulu - imithwalo ye-inertia ngaphandle kokunyuka ngononophelo. Ukongeza, iimotor ezinyathelayo ngokubanzi zibonisa iindawo ezivakalayo, zihlala ziphakathi kwe-100 kunye nama-300 amanyathelo ngomzuzwana. Ulungelelwaniso lweUnipolar lunokubonisa ngakumbi ukuvakala kwetorque ripple ngendlela elula epheleleyo-nenyathelo. Ezi ziphumo zinokuncitshiswa nge-microstepping, ukudambisa ngoomatshini (okufana nokudityaniswa kwe-elastomer), okanye ukuguquguquka okuncinci kokuphindaphindeka kwenyathelo ukunqanda iibhendi ze-resonance.

Usetyenziso oluQhelekileyo kunye neemeko zokuSetyenziswa kwiShishini

I-Ofisi, uMthengi, kunye neZixhobo zokuKhanya kwiShishini

Iimotor ze-unipolar stepper zinembali ende kubashicileli, koomatshini befeksi, izikena, kunye nezixhobo ezifanayo apho itorque ephakathi kunye nesantya sanele, kwaye iindleko-ulawulo lwentshukumo olusebenzayo luyafuneka. Ukukwazi ukudibanisa iisekethe zomqhubi ezilula ngokuthe ngqo kwiibhodi zokulawula kubenza babe nomtsalane kwizixhobo ezihlangeneyo. Ii-angles zenyathelo le-7.5 ° okanye i-1.8 ° zidityaniswe nezixhobo ezisezantsi zokubuyela umva okanye izikrufu ezikhokelayo zinokuvelisa ukutya okuchanekileyo kwephepha kunye nokumiswa kwenqwelo ngexabiso eliphantsi. Uninzi lwezixhobo ezinjalo zivelisa iinjini kunye nabaqhubi ngokusebenzisa amajelo athengiswayo ukuze kuncitshiswe ixabiso leyunithi nganye.

Ukuzenzekela kweFactory kunye nezixhobo

Kuseto lwefektri, iimotor ze-unipolar stepper ziqhele ukusetyenziswa kwiitafile zesalathiso, ii-valve actuators, izixhobo zelabhoratri, kunye nokukhanya-abahambisi bomthwalo. Izicelo ezifuna ukuphindaphinda okuchanekileyo kokubeka phezu kwemivumbo emifutshane zizuza kwisenzo sazo sokuziphatha. Umzekelo, indlela yokwalathisa eneendawo ezili-12 kwi-revolution nganye inokuqondwa nge-1.8 ° motor kunye nokunciphisa izixhobo; Amanyathelo angama-200 × umlinganiselo wegiya unokucwangciswa ukuze ngokuthe ngqo i-16-32 amanyathelo ahambelane nendawo nganye yesalathiso, ingqiqo yokulawula lula. Iiactivators ezibambekayo ezisetyenziswa kuvavanyo kunye nezixhobo zokulinganisa zihlala zixhomekeke kwiimotor ze-unipolar ngenxa yokuthembeka kwazo okuqinisekisiweyo kunye nokudibana okulula.

amaQonga eMfundo kunye nePrototyping

Ngenxa yokulula kwazo, iimotor ze-unipolar stepper zisetyenziswa kakhulu kwiikiti zemfundo, iibhodi zophuhliso, kunye nokusetwa kovavanyo. Abafundi banokuqonda unxulumano phakathi kokusebenza kwesigaba kunye nesikhundla se-shaft ngaphandle kokujonga kwi-H-bhlorho yokujikeleza. Iimodyuli ezininzi zokungena-inqanaba zibonelela ngeetheminali ezijijwayo okanye iziqhagamshelo ezilula ezilungele iingcingo ezikhawulezayo, kunye nolawulo nge-microcontroller I/O izikhonkwane zithe ngqo. Umthengisi othembekileyo wezixhobo ezinjalo ubonelela ngeenjini, abaqhubi, kunye namaxwebhu njengephakheji edibeneyo yokunciphisa ijika lokufunda kubasebenzisi abatsha.

Izikhokelo zoKhetho kunye neNgqwalasela yoYilo oluPhambili

Ukuthelekisa iTorque kunye ne-Inertia

Ukukhetha i-motor efanelekileyo kufuna ukuhambelana nomthamo wayo we-torque kunye ne-inertia yomthwalo kunye nokukhuhlana. Njengomthetho wesithupha, inertia yomthwalo obonakalisiweyo kwi-motor shaft akufanele idlule amaxesha angama-10 kwi-motor inertia ye-rotor inertia ukugcina ulawulo oluphendulayo ngaphandle kwamanyathelo agqithwayo. Umzekelo, ukuba i-rotor inertia yi-80 g·cm², umthwalo obonakalisiweyo kufuneka ube ngaphantsi kwe-800 g·cm². Xa kusetyenziswa amabhanti, iigiya, okanye izikrufu ezikhokelayo, iinjineli kufuneka ziguqule ngononophelo ubunzima bomgca ube yi-inertia ejikelezayo zisebenzisa iifomyula ezisemgangathweni ukuqinisekisa ukusebenza okuguquguqukayo kunye nokuthembeka.

Ujongano loMbane kunye nezithintelo zoNikezo

Umbane okhoyo wobonelelo kunye nokhoyo yimiqobo ephambili. Ukuba inkqubo inokubonelela nge-24 V kwi-2 A ngesigaba ngasinye, abaqulunqi banokukhetha i-motor kunye nokumelana nesigaba kwi-6-12 Ω uluhlu kunye nokulinganisa okwangoku ngaphantsi kwe-2 A ukuvumela umda othile. Ephezulu-yevoltheji, ephantsi-uyilo lwangoku lukholisa ukwenza ngcono kwizantya eziphezulu kuba amandla ombane amakhulu ayoyisa i-inductive react ngempumelelo ngakumbi. Nangona kunjalo, iimfuno zokhuseleko kunye nokwahlukaniswa kwiinkqubo zasefektri zinokunciphisa umbane omkhulu. Vala ulungelelwaniso kunye nomenzi womqhubi okanye umthengisi uqinisekisa ukuba ukulinganiswa komqhubi kunye neeparamitha zeemoto zilungelelanisiwe.

Ukuqwalaselwa kokusingqongileyo kunye noBomi bonke

Ubushushu be-ambient, ukufuma, ukothuka, kunye nokungcangcazela zonke zinefuthe kubomi bemoto. Iibheringi zinikwa umlinganiselo wamashumi amawaka eeyure zokusebenza kwimithwalo elinganisiweyo yeradial kunye ne-axial. Ukuba i-motor kufuneka isebenze kwindawo enothuli okanye kwindawo enomhlwa, indlu evaliweyo okanye i-IP-rated ingaba yimfuneko. Iimotor ze-Unipolar stepper ezineebheringi ezitywiniweyo kunye neenkqubo zokugquma ezomeleleyo (iklasi B okanye F) zinokugcina ukusebenza iminyaka emininzi kwiinkqubo ezizisebenzelayo eziqhelekileyo. Amaxwebhu asuka kumzi-mveliso weemoto kufuneka achaze ukunyuka kwamaqondo obushushu avumelekileyo, ukuxhathisa ukugquma, kunye nemigangatho yovavanyo, evumela iinjineli ukuba zenze uqikelelo lobungakanani bobomi.

UkuFakelo, ukuCwangcisa, kunye noLondolozo lweZenzo ezilungileyo

Iingcingo ezichanekileyo kunye nokuchongwa kweSigaba

Iingcingo ezifanelekileyo zibalulekile. Ngeenjini ezi-6-lead, iinjineli kufuneka zichonge isiqingatha sekhoyili ngokulinganisa ukuxhathisa. Umzekelo, ukulinganisa i-5 Ω phakathi kwezikhokelo ezimbini kunye ne-2.5 Ω phakathi kwenye yezo zikhokelo kunye nesithathu kubonisa ukuba ukhokelo lwesithathu yimpompo esembindini. Iimpazamo eziqhelekileyo ziquka ukuwela - ukudibanisa izigaba okanye ukutshintshanisa iziphelo zekhoyili, ezinokubangela intshukumo ephosakeleyo okanye ukusilela ngokupheleleyo ukuqalisa. Izigaba zokuleyibhela ngamaqela (A+, A-, B+, B-) kunye neempompo zaseziko ngexesha lofakelo kunciphisa kakhulu ixesha lokusombulula ingxaki kamva.

I-Cabling, Grounding, kunye ne-EMC

Iimoto ezikhokelayo kufuneka zibe zimbini ezijijekileyo okanye iintambo ezikhuselweyo ukwenzela imitsi emide, ngakumbi ngaphezulu kwe-1-2 yeemitha, ukunciphisa ukudityaniswa kwengxolo kwiisekethe zolawulo ezinovakalelo. Ukupheliswa kweekhaka kufuneka kumiswe kwelinye icala ukuthintela iilophu zomhlaba. Abaqhubi bamandla kufuneka babelane ngereferensi eqinileyo kunye nolawulo lwe-elektroniki. Kwiinkqubo ezininzi ze-axis, ukubekwa kwenkwenkwezi ngononophelo kunye nokwahlulwa kwephezulu-yangoku kunye nesezantsi-iintambo zombane zombane zinceda ukugcina ukuthotyelwa kwe-EMC kunye nokuthintela iimpazamo zamanyathelo angenamkhethe. Umthengisi onolwazi unokusoloko encoma iintlobo zekhebula eziqhelekileyo kunye neentsapho ezidibanisayo ezifanelekileyo kwindawo yesicelo.

Ukuhlolwa okuqhelekileyo kunye nokuxilongwa kweFault

Ukugcinwa rhoqo kubandakanya ukujonga iibholithi zokunyuswa, ukuhlola iziqhagamshelo ukuba zingadleka na, kunye nokulinganisa ukuxhathisa okujikajikayo ukubona iimpawu zakwangoko zomonakalo wokugquma. Umzekelo, ukuhla okungaphezulu kwe-10% kumlinganiselo wokuchasa xa kuthelekiswa nenkcazo yokuqala yefektri inokubonisa ukujika okufutshane, ngelixa ukonyuka okubalulekileyo kunokubonisa iingcingo ezaphukileyo okanye uqhagamshelwano olubi. I-Thermal imaging inokuthi ibonise iindawo ezithandwayo zendawo ezibangelwa ukungaphumeleli kwekhoyili okanye imiba yomqhubi. Ukuphumeza iishedyuli zokuhlola ngamaxesha athile kunciphisa ixesha lokuphumla elingacwangciswanga kwiinkqubo ezizenzekelayo.

I-Maxtech ibonelela ngezisombululo

IMaxtech ibonelela ngoluhlu olupheleleyo lweemotor ze-unipolar stepper, abaqhubi, kunye nokhetho lweekhebhula ezilungiselelwe iimfuno zeshishini kunye ne-OEM. Ukusuka kwi-compact NEMA 17 units ukuya phezulu-torque NEMA 34 izisombululo, umgca wemveliso wethu ugubungela imisinga yesigaba ukusuka ku-0.4 A ukuya ku-4.0 A kunye nokubamba iitorque ukuya kwi-3.5 N·m. Amaqela oNjineli afumana iinkcukacha ze-torque-isantya sokugoba, idatha ye-thermal, kunye nemizobo yocingo ukukhawulezisa uyilo. Nokuba ufuna ibhetshi yeprototype okanye enkulu - unikezelo lwentengiso yevolumu, iMaxtech isebenza njengomthombo omnye - umboneleli womthombo kwaye idibanisa iindibano ezilungiselelweyo ezivela kumzi-mveliso wethu, zikunceda ukuba ufezekise intshukumo echanekileyo, ephindaphindwayo enexabiso eliphezulu kunye nokuthembeka.