Mbatatisi inopisa! "- Uku kungave ndiko kutanga kunoita mainjiniya, vagadziri, nevadzidzi vazhinji pamota dze micro stepper panguva yekugadzirisa mapurojekiti. Chinhu chinowanzoitika kuti mamota e micro stepper agadzire kupisa panguva yekushanda. Asi chinhu chikuru ndechekuti, kupisa kwakajairika sei? Uye kupisa kwacho kunoratidza dambudziko rakaita sei?"

Kupisa kwakanyanya hakungoderedzi kushanda zvakanaka kwemota, torque, uye kurongeka kwayo chete, asiwo kunokurumidza kuchembera kwemukati memoto kwenguva refu, zvichizokonzera kukuvara zvachose kwemota. Kana uri kunetseka nekupisa kwema micro stepper motors pa3D printer yako, CNC machine, kana robhoti, saka chinyorwa chino ndechenyu. Tichaongorora zvikonzero zvefivha uye tokupai mhinduro shanu dzekutonhodza dzinokurumidza.

Chikamu 1: Kuongorora chikonzero chemidzi - nei mota ye micro stepper ichigadzira kupisa?

Chekutanga, zvakakosha kujekesa pfungwa huru: kupisa kwema micro stepper motors hakudzivisiki uye hakugoni kudzivirirwa zvachose. Kupisa kwayo kunonyanya kubva pazvinhu zviviri:

1. Kurasikirwa nesimbi (kurasikirwa kwepakati): Stator yemota yakagadzirwa nemapepa esimbi esilicon akaunganidzwa, uye simba remagineti rinochinjana richagadzira eddy currents uye hysteresis mairi, zvichikonzera kupisa. Chikamu ichi chekurasikirwa chine chekuita nekumhanya kwemota (frequency), uye kumhanya kwacho kwakanyanya, kurasikirwa kwesimbi kunowanzo kuve kukuru.

2. Kurasikirwa nemhangura (kurasikirwa nekusimba kwekudzivirira): Iri ndiro sosi huru yekupisa uye chikamu chatinogona kutarisa pakugadzirisa. Rinotevera mutemo waJoule: P=I ² × R.

P (kurasikirwa kwesimba): Simba racho rakachinjwa kuita kupisa zvakananga.

Ini (ikozvino):Iyo magetsi inoyerera kuburikidza nemota inotenderera.

R (Kuramba):Kudzivirira kwemukati kwemota inotenderera.

Zvichitaurwa zviri nyore, huwandu hwekupisa hunogadzirwa hunoenderana ne square ye current. Izvi zvinoreva kuti kunyangwe kuwedzera kudiki kwe current kunogona kukonzera kuwedzera kwe square fold mukupisa. Mhinduro dzedu dzese dzinotenderera pakugadzirisa kwesainzi current iyi (I).

Chikamu 2: Zvikonzero zvikuru zvishanu - Kuongororwa kwezvikonzero chaizvo zvinotungamira kufivha yakanyanya

Kana tembiricha yemota yakakwira zvakanyanya (sekunge kupisa zvakanyanya zvekuti hazvigoneke kubatwa, kazhinji zvichipfuura 70-80 ° C), inowanzo kukonzerwa nechimwe kana kupfuura chezvikonzero zvinotevera:

Dambudziko rekutanga nderekuti simba rekutyaira rakaiswa pamusoro zvakanyanya

Iyi ndiyo nzvimbo inonyanya kuzivikanwa uye yekutanga yekutarisa. Kuti vawane torque yakakura yekuburitsa, vashandisi vanowanzo tenderedza potentiometer inotonga magetsi pamadhiraivha (akadai seA4988, TMC2208, TB6600) zvakanyanya. Izvi zvakakonzera zvakananga kuti winding current (I) ipfuure zvakanyanya kukosha kwemota, uye zvichienderana neP=I ² × R, kupisa kwakawedzera zvakanyanya. Yeuka: kuwedzera kwetorque kunouya nekuda kwekupisa.

Chikonzero chechipiri: Voltage isina kunaka uye nzira yekutyaira

Voltage yemagetsi yakakwira zvakanyanya: Sisitimu yemota yestepper inoshandisa "constant current drive", asi voltage yakakwira inoreva kuti mutyairi anogona "kusundira" magetsi mumota ichitenderedza mota nekukurumidza, izvo zvinobatsira pakuvandudza mashandiro ekumhanya kwepamusoro. Zvisinei, kana mota ichimhanya zvishoma kana kuti yakamira, voltage yakawandisa inogona kukonzera magetsi kupwanyika kakawanda, zvichiwedzera kurasikirwa kweswitch uye zvichiita kuti mutyairi nemota zvipise.

Kusashandisa micro stepping kana kusaita division yakakwana:Muchikamu che "full step mode", "current waveform" i "square wave", uye "current" inoshanduka zvakanyanya. "current value" iri mu "coil" inongoerekana yachinja pakati pe0 ne "maximum value", zvichikonzera "torque ripple" yakakura uye ruzha, uye kushanda kwakaderera. Uye "micro stepping" inogadzirisa "current change current" (inenge "sine wave"), inoderedza "harmonic loss" uye "torque ripple", inomhanya zvakanaka, uye inowanzo deredza "average heat generation" kusvika pamwero wakati.

Dambudziko rechitatu: Kutakura zvinhu zvakawandisa kana matambudziko emakanika

Kupfuura mutoro wakayerwa: Kana mota ikashanda pasi pemutoro uri pedyo kana kupfuura torque yayo kwenguva yakareba, kuti ikunde kuramba, mutyairi acharamba achipa simba remagetsi rakawanda, zvichikonzera kupisa kwakanyanya.

Kukweshana kwemuchina, kusarongeka zvakanaka, uye kuvharika kwemidziyo: Kusaisa zvakanaka ma coupling, ma guide rails asina kunaka, uye zvinhu zvekunze zviri mu lead screw zvinogona kukonzera mitoro yakawedzerwa uye isingakoshi pamota, zvichiita kuti ishande nesimba uye iwedzere kupisa.

Chinokonzera chechina: Kusarudzwa kwemota kusina kunaka

Bhiza diki riri kudhonza ngoro hombe. Kana purojekiti yacho pachayo ichida torque yakakura, uye ukasarudza mota diki kwazvo (sekushandisa NEMA 17 kuita basa reNEMA 23), inogona kushanda chete kana yakawandisa kwenguva yakareba, uye kupisa kwakanyanya mugumisiro usingadzivisiki.

Chikonzero chechishanu: Nzvimbo isina kunaka yekushandira uye mamiriro asina kunaka ekupisa

Tembiricha yepamusoro yemhepo: Mota iyi inoshanda munzvimbo yakavharwa kana munzvimbo ine zvimwe zvinhu zvinopisa zviri pedyo (senge mibhedha ye3D printer kana misoro yelaser), izvo zvinoderedza zvakanyanya kushanda kwayo mukuparadza kupisa.

Kusakwana kwe convection yechisikigo: Mota yacho pachayo ndiyo inokonzera kupisa. Kana mhepo yakatenderedza ikasatenderera, kupisa hakugone kutakurwa nenguva, zvichikonzera kuunganidzwa kwekupisa uye kukwira kwekupisa nguva dzose.

Chikamu 3: Mhinduro Dzinoshanda -Nzira 5 Dzinoshanda Dzekutonhodza Mota Yako YeMicro Stepper

Mushure mekuona chikonzero, tinogona kunyora mushonga wakakodzera. Ndapota gadzirisa dambudziko uye gadzirisa zvinotevera:

Mhinduro 1: Isa simba rekutyaira nemazvo (danho rekutanga rinoshanda zvakanyanya)

Nzira yekushanda:Shandisa multimeter kuyera voltage yemagetsi (Vref) padhiraivha, uye verenga kukosha kwemagetsi zvinoenderana nefomura (mafomula akasiyana emadhiraivha akasiyana). Isa pa70% -90% yemagetsi emagetsi emota. Semuenzaniso, mota ine magetsi emagetsi e1.5A inogona kuiswa pakati pe1.0A ne1.3A.

Sei zvichishanda: Inoderedza zvakananga I mufomura yekugadzira kupisa uye inoderedza kurasikirwa nekupisa nenguva dzakaita sikweya. Kana torque yakakwana, iyi ndiyo nzira yekutonhodza inodhura zvakanyanya.

Mhinduro yechipiri: Gadzirisa voltage yekutyaira uye bvumira micro stepping

Voltage yekutyaira: Sarudza voltage inoenderana nezvinodiwa nekumhanya kwako. Kune akawanda maapplication edesktop, 24V-36V imhando yemagetsi inoratidza kushanda zvakanaka uye kupisa. Dzivisa kushandisa voltage yakawandisa. 

Bvumira kupatsanurwa kwezvikamu zvishoma kwepamusoro: Isa mutyairi pamodhi yepamusoro ye micro stepping (yakadai se16 kana 32 subdivision). Izvi hazvingounzi kufamba kwakapfava uye kwakanyarara chete, asiwo zvinoderedza kurasikirwa kwe harmonic nekuda kwe smooth current waveform, iyo inobatsira kuderedza kugadzirwa kwekupisa panguva yekushanda kwepakati nepasi.

Mhinduro 3: Kuisa ma heat sinks uye kutonhodza mweya nekumanikidzwa (kupisa kwemuviri)

Mafin ekuparadza kupisa: Kune akawanda ma miniature stepper motors (kunyanya NEMA 17), kunamira kana kubata mafin ekupisa ealuminium alloy pamota ndiyo nzira yakatwasuka uye isingadhuri. Heat sink inowedzera zvakanyanya nzvimbo yekupisa yemota, ichishandisa mhepo inoyerera kubva mumhepo kuti ibvise kupisa.

Kutonhodza kwemhepo yakamanikidzwa: Kana mhedzisiro yekudziya kwekupisa isati yakwana, kunyanya munzvimbo dzakavharirwa, kuwedzera feni diki (senge 4010 kana 5015 fan) yekutonhodza mhepo yakamanikidzwa ndiyo mhinduro yekupedzisira. Kufamba kwemhepo kunogona kutakura kupisa nekukurumidza, uye mhedzisiro yekutonhodza yakakosha zvikuru. Iyi ndiyo tsika yakajairika pamaprinta e3D nemichina yeCNC.

Mhinduro yechina: Gadzirisa Magadzirirwo eDhivha (Matekiniki Epamusoro)

Madhiraivha mazhinji emazuva ano akangwara, anopa mashandiro epamusoro ekudzora mashandiro emagetsi:

StealthShop II & SpreadCycle: Kana chinhu ichi chashandiswa, kana mota isingamire kwenguva yakati, simba rekutyaira rinodzikira roga kusvika pa50% kana kutodzikira pane simba rekushanda. Nekuda kwekuti mota iri muchimiro chekusamira kwenguva yakawanda, basa iri rinogona kuderedza zvakanyanya kupisa kusingachinji.

Nei ichishanda: Kutarisira magetsi zvine hungwaru, kupa simba rakakwana kana zvichidikanwa, kuderedza marara kana zvisingadiwi, uye kuchengetedza simba zvakananga uye kutonhora kubva kunobva magetsi.

Mhinduro 5: Tarisa chimiro chemuchina wobva wasarudzazve (mhinduro huru)

Kuongorora kwemuchina: Tenderedza shaft yemota nemaoko (iri muchimiro chekudzima simba) wonzwa kana yakatsetseka. Tarisa sisitimu yese yekutumira kuti uve nechokwadi chekuti hapana nzvimbo dzakasimba, dzakakweshana, kana dzakaoma. Sisitimu yemakanika yakatsetseka inogona kuderedza mutoro wemota zvakanyanya.

Sarudzo itsva: Kana mushure mekuedza nzira dzese dziri pamusoro apa, mota ichiri kupisa uye torque isina kukwana, zvingangoita kuti mota yacho yakasarudzwa kuva diki zvakanyanya. Kutsiva mota ne specification yakakura (yakadai sekuvandudza kubva kuNEMA 17 kuenda kuNEMA 23) kana current yakakwira, uye kuibvumira kushanda munzvimbo yayo yakasununguka, zvichagadzirisa dambudziko rekupisa zviri nyore.

Tevedzera maitiro ekuferefeta:

Uchitarisana nemota ye micro stepper ine kupisa kwakanyanya, unogona kugadzirisa dambudziko racho nenzira yakarongeka nekutevera maitiro anotevera:

Mota iri kupisa zvakanyanya

Danho 1: Tarisa kana simba redhiraivha rakaiswa rakakwirira zvakanyanya?

Danho rechipiri: Tarisa kana mutoro wemuchina wakanyanya kurema kana kuti kukweshana kwakakwira?

Danho rechitatu: Isa michina yekutonhodza chaiyo

Batanidza sinki yekupisa

Wedzera kutonhodza kwemhepo kwakasimba (feni diki)

Tembiricha yave nani here?

Danho rechina: Funga nezvekusarudzazve uye kutsiva nemota hombe