Ukukhethwa kweenjini ze-stepper kwizixhobo ezizenzekelayo

Iinjini zeStepperingasetyenziselwa ulawulo lwesantya kunye nolawulo lokubeka ngaphandle kokusetyenziswa kwezixhobo zempendulo (oko kukuthi ulawulo oluvulekileyo lwe-loop), ngoko esi sisombululo sokuqhuba sinoqoqosho kwaye sithembekile. Kwizixhobo ezizenzekelayo, izixhobo, i-stepper drive isetyenziswe kakhulu. Kodwa abasebenzisi abaninzi bezobuchwephesha malunga nendlela yokukhetha i-motor ye-stepper efanelekileyo, indlela yokwenza eyona ntsebenzo ingcono ye-stepper drive okanye unemibuzo emininzi. Eli phepha lixoxa ngokukhethwa kweenjini ze-stepper, kugxininise ekusetyenzisweni kwamava athile obunjineli beemoto ezinyathelayo, ndiyathemba ukuba ukuthandwa kweenjini ze-stepper kwizixhobo ezizenzekelayo ukudlala indima ekubhekiswa kuyo.

 

1, Intshayelelo yei-motor ye-stepper

I-stepper motor yaziwa ngokuba yi-pulse motor okanye inyathelo lemoto. Iqhubela phambili nge-engile ethile rhoqo xa i-excitation state iguqulwa ngokuhambelana ne-input pulse signal, kwaye ihlala imile kwindawo ethile xa i-excitation state ihlala ingatshintshi. Oku kuvumela i-stepper motor ukuba iguqule igalelo le-pulse yesiginali ibe yi-angular displacement ehambelana nemveliso. Ngokulawula inani lee-pulses ze-input ungacacisa ngokuchanekileyo i-angular displacement yesiphumo ukwenzela ukuba ufezekise indawo engcono kakhulu; kwaye ngokulawula i-frequency ye-pulses igalelo ungalawula ngokuchanekileyo isantya se-angular yesiphumo kwaye ufezekise injongo yokulawula isantya. Ngasekupheleni kweminyaka yee-1960, kwabakho iintlobo ngeentlobo zeenjini zokunyathela, kwaye kule minyaka ingama-40 idlulileyo ibone uphuhliso olukhawulezayo. Iimotor ze-Stepper ziye zakwazi ukwenza iimotor zeDC, ii-asynchronous motors, kunye nee-synchronous motors ecaleni, zibe luhlobo olusisiseko lwemoto. Kukho iintlobo ezintathu zeenjini ze-stepper: ezisebenzayo (uhlobo lwe-VR), imagnethi esisigxina (uhlobo lwe-PM) kunye ne-hybrid (uhlobo lwe-HB). I-hybrid stepper motor idibanisa izibonelelo zeendlela ezimbini zokuqala ze-stepper motor. I-motor stepper iqukethe i-rotor (i-rotor core, i-magnets esisigxina, i-shaft, i-ball bearings), i-stator (i-winding, i-stator core), i-caps yangaphambili nasemva, njl njl. I-motor ye-hybrid stepper yesigaba sesibini ine-stator enamazinyo amakhulu angama-8, amazinyo amancinci angama-40 kunye ne-rotor enamazinyo amancinci angama-50; imotor enamanqanaba amathathu inestator enamazinyo amakhulu ayi-9, amazinyo amancinci angama-45 kunye nerotor enamazinyo amancinci angama-50.

 

2, Umgaqo wolawulo

Ii-motor ye-stepperayinakuqhagamshelwa ngokuthe ngqo kunikezelo lwamandla, kwaye ayinakufumana ngokuthe ngqo imiqondiso ye-pulse yombane, kufuneka iqondwe nge-interface ekhethekileyo - umqhubi we-motor stepper ukusebenzisana nombane kunye nomlawuli. Umqhubi we-stepper motor ngokubanzi uqulunqwe ngumsasazi weringi, kunye nesekethe yeamplifier yamandla. Isahluli seringi sifumana imiqondiso yolawulo kumlawuli. Ngalo lonke ixesha isignali ye-pulse ifunyenwe imveliso yesahluli se-ring iguqulwa kube kanye, ngoko ubukho okanye ukungabikho kunye nokuphindaphinda kwesignali ye-pulse kunokugqiba ukuba isantya semoto ye-stepper siphezulu okanye siphantsi, isantya okanye iyancipha ukuqala okanye ukuyeka. Umsasazi weringi kufuneka abeke iliso kwisalathiso sesalathiso esivela kumlawuli ukugqiba ukuba ngaba utshintsho lwemo yemveliso yalo lukwindlela elungileyo okanye engalunganga, kwaye ngaloo ndlela imisele i-stepper motor's steering.

 

3. Iiparamitha eziphambili

①Inombolo yokuvala: ubukhulu becala 20, 28, 35, 42, 57, 60, 86, njl.

②Inombolo yesigaba: inani leekhoyili ngaphakathi kwi-motor stepper, inombolo yesigaba se-stepper motor ngokubanzi inezigaba ezibini, inqanaba lesithathu, isigaba sesihlanu. I-China isebenzisa iimotor ezinenqanaba ezibini ikakhulu, isigaba sesithathu sikwanazo ezinye izicelo. IJapan idla ngokusetyenziswa iimotor ezinenqanaba lesihlanu

③I-angle yenyathelo: ehambelana nesandi se-pulse, i-angular displacement ye-motor rotor. Stepper motor inyathelo engile formula wokubala ngolu hlobo lulandelayo

I-engile yenyathelo = 360° ÷ (2mz)

m inani lezigaba ze-motor stepper

Z inani lamazinyo e-rotor ye-motor stepper.

Ngokwale fomyula ingentla, i-angle yesinyathelo sesigaba sesibini, isigaba sesithathu kunye nesigaba sesihlanu se-stepper motors yi-1.8 °, 1,2 ° kunye ne-0.72 ° ngokulandelanayo.

④ Ukubamba i-torque: yi-torque ye-stator ejikelezayo ye-motor ngokusebenzisa i-current rated, kodwa i-rotor ayijikelezi, i-stator ivala i-rotor. Ukubamba i-torque yeyona parameter ibaluleke kakhulu yeenjini ze-stepper, kwaye sesona siseko siphambili sokhetho lweemoto

⑤ I-torque yokubeka: i-torque efunekayo ukuguqula i-rotor ngamandla angaphandle xa i-motor ingadluli okwangoku. I-torque yenye yezalathisi zokusebenza zokuvavanya i-motor, kwimeko yezinye iiparameters ziyafana, i-torque encinci yokubeka i-torque ithetha ukuba "impembelelo ye-slot" incinci, iluncedo ngakumbi ekuqhubeni kwe-motor egijima ngesantya esiphantsi seempawu ze-torque: ubukhulu becala ibhekiselele kwiimpawu zefrikhwensi ye-torque, i-motor stable stable iyakwazi ukumelana nesantya esithile ngaphandle kwesantya esiphezulu. I-curve-frequency curve isetyenziselwa ukuchaza ubudlelwane phakathi kwe-torque ephezulu kunye nesantya (i-frequency) ngaphandle kokulahlekelwa kwesinyathelo. I-torque frequency curve yiparameter ebalulekileyo ye-stepper motor kwaye sesona siseko sokhetho lweemoto.

⑥ Ireyithingi yangoku: i-motor winding current efunekayo ukugcina i-torque elinganisiweyo, ixabiso elisebenzayo

 

4. Ukukhetha amanqaku

Usetyenziso lwemizi-mveliso olusetyenziswa kwisantya semoto esinyathelayo ukuya kuthi ga kwi-600 ~ 1500rpm, isantya esiphezulu, ungaqwalasela i-loop-loop stepper motor drive, okanye ukhethe inkqubo ye-servo drive efanelekileyo kakhulu amanyathelo okukhetha iimoto (jonga umfanekiso ongezantsi).

 

(1) Ukhetho lwe-angle yenyathelo

Ngokwenani lezigaba zemoto, kukho iintlobo ezintathu ze-angle yesinyathelo: 1.8 ° (isigaba esibini), 1.2 ° (isigaba sesithathu), 0.72 ° (isigaba esihlanu). Ewe kunjalo, i-angle yenqanaba lenqanaba lesihlanu inokuchaneka okuphezulu kodwa i-motor kunye nomqhubi wayo zibiza kakhulu, ngoko ke ayifane isetyenziswe eTshayina. Ukongeza, abaqhubi be-stepper abaqhelekileyo ngoku basebenzisa itekhnoloji yokwahlulahlulahlula-hlula, kulwahlulo olu-4 olungezantsi, ukuchaneka kwe-angle yokwahlulahlula kusenokuqinisekiswa, ngoko ke ukuba izikhombisi zokuchaneka kwenqanaba lenqanaba lodwa ukusuka kuqwalaselo, inqanaba lesihlanu lenqanaba le-motor linokuthi litshintshwe ngamanqanaba amabini okanye amathathu. Umzekelo, ekusetyenzisweni kolunye uhlobo lokukhokelela kumthwalo we-5mm screw, ukuba i-motor yesigaba ezibini isetyenzisiwe kwaye umqhubi usetelwe kwizahlulo ezi-4, inani le-pulses nge-revolution ye-motor yi-200 x 4 = 800, kwaye i-pulse ilingana ne-5 ÷ 800 = 0.006μm idibene ne-accuraμ = 0.006. iimfuno.

(2) Itorque engatshintshiyo (ebambe itorque) ukhetho

Iindlela ezisetyenziswa ngokuqhelekileyo zothutho lomthwalo ziquka amabhanti alungelelanisiweyo, iibhanti zefilament, irack kunye nepinion, njl. njl. Emva koko, ngokwesantya esiphezulu sokubaleka esifunwa ziintyatyambo zombane, ezi meko zimbini zilandelayo zokusetyenziswa ukukhetha i-torque efanelekileyo yokubamba i-stepper motor ① usetyenziso lwesantya esifunekayo se-300pm okanye ngaphantsi: ukuba umthwalo womatshini uguqulelwa kwi-motor shaft efunekayo yomthwalo we-torque T1, ke le torque yomthwalo iphindaphindwa ngokhuseleko olufunekayo 200 SF. I-motor ephethe i-torque Tn ②2 yezicelo ezifuna isantya se-motor 300pm okanye ngaphezulu: setha isantya esiphezulu se-Nmax, ukuba umthwalo womatshini uguqulelwa kwi-motor shaft, i-torque efunekayo yomthwalo ngu-T1, ngoko le torque yomthwalo iphindaphindwe yinto yokhuseleko SF (ngokuqhelekileyo i-2.5-3.5), enika i-torque yokubamba i-Tn. Jonga kuMfanekiso 4 kwaye ukhethe imodeli efanelekileyo. Emva koko sebenzisa i-curve-frequency curve ukujonga kwaye uthelekise: kwi-curve-frequency curve, isantya esiphezulu se-Nmax esifunwa ngumsebenzisi sihambelana ne-torque ephezulu elahlekileyo ye-T2, ngoko i-torque ephezulu elahlekileyo ye-T2 kufuneka ibe ngaphezu kwe-20% enkulu kune-T1. Ngaphandle koko, kuyafuneka ukuba ukhethe i-motor entsha enetorque enkulu, kwaye ujonge kwaye uthelekise kwakhona ngokwe-torque frequency curve yemoto entsha ekhethiweyo.

(3) Okukhona likhulu inani lesiseko senjini, kokukhona inkulu itorque yokubamba.

(4) ngokwexesha langoku elilinganiselweyo ukukhetha umqhubi we-stepper ohambelanayo.

Ngokomzekelo, i-rerated current ye-motor 57CM23 yi-5A, ngoko uhambelana nobuninzi obuvumelekileyo be-drive ngoku ngaphezulu kwe-5A (nceda uqaphele ukuba ixabiso elisebenzayo kunokuba liphezulu), kungenjalo ukuba ukhetha ubuninzi bangoku kuphela kwe-3A drive, i-torque ephezulu ye-motor ingaba malunga ne-60% kuphela!

5, amava isicelo

(1) stepper motor low frequency resonance ingxaki

Ukwahlulahlula i-stepper drive yindlela esebenzayo yokunciphisa i-resonance ephantsi ye-stepper motors. Ngaphantsi kwe-150rpm, i-drive yokwahlulahlula isebenza kakhulu ekunciphiseni ukungcangcazela kwemoto. Ngokwethiyori, okukhona ulwahlulo olukhulu, kokukhona isiphumo esingcono ekunciphiseni ukungcangcazela kwemotor, kodwa eyona meko yeyokuba ukwahlulahlula kunyuke ukuya kwi-8 okanye kwi-16 emva kokuba isiphumo sophuculo ekunciphiseni ukungcangcazela kwemotor sifikelele kokugqithisileyo.

Kwiminyaka yakutshanje, kukho abaqhubi be-anti-low-frequency resonance stepper abadweliswe ekhaya nakwamanye amazwe, i-DM kaLeisai, i-DM-S yeemveliso, itekhnoloji ye-anti-low-frequency resonance. Olu chungechunge lwabaqhubi lusebenzisa imbuyekezo ye-harmonic, ngokusebenzisa i-amplitude kunye nesigaba sokulinganisa imbuyekezo, inokunciphisa kakhulu i-vibration ephantsi ye-motor stepper, ukuphumeza ukungcangcazela okuphantsi kunye nokusebenza kwengxolo ephantsi yemoto.

(2) Impembelelo yolwahlulo lwe-stepper motor ekumiseni ukuchaneka

I-Stepper motor subdivision drive circuit ayinakuphucula kuphela ukuguda kwentshukumo yesixhobo, kodwa inokuphucula ngokufanelekileyo ukuchaneka kokubeka izixhobo. Uvavanyo lubonisa ukuba: Kwiqonga lentshukumo yebhanti ye-synchronous, i-stepper motor 4 subdivision, i-motor inokubekwa ngokuchanekileyo kwinqanaba ngalinye.