Stepper motor txoj cai thiab tsav

1. Dab tsi yog stepper motor?
Stepper lub cev muaj zog yog ib qho actuator uas hloov hluav taws xob pulses mus rau hauv qhov hloov pauv. Txhawm rau muab tso ncaj nraim: thaum tus tsav tsheb stepper tau txais lub teeb liab mem tes, nws tsav lub stepper lub cev muaj zog tig lub kaum sab xis (thiab lub kaum sab xis) hauv qhov kev taw qhia. Koj tuaj yeem tswj tus naj npawb ntawm cov pulses los tswj lub angular hloov chaw, thiaj li ua tiav lub hom phiaj ntawm qhov tseeb; Nyob rau tib lub sijhawm, koj tuaj yeem tswj tau qhov zaus ntawm pulses los tswj qhov nrawm thiab nrawm ntawm lub cev muaj zog tig, thiaj li ua tiav lub hom phiaj ntawm kev tswj ceev.
2. Dab tsi ntawm stepper motors muaj?
Muaj peb hom stepping motors: cov hlau nplaum ruaj khov (PM), reactive (VR) thiab hybrid (HB) cov hlau nplaum ruaj khov stepping feem ntau yog ob-theem, torque thiab ntim me me, lub kaum sab xis feem ntau yog 7.5 degrees lossis 15 degrees; reactive stepping yog feem ntau peb-theem, loj torque tso zis yuav pom tau hais tias, lub stepping lub kaum sab xis yog feem ntau 1.5 degrees, tab sis lub suab nrov thiab kev co yog loj heev. Hauv Tebchaws Europe thiab Tebchaws Meskas thiab lwm lub tebchaws tsim kho hauv 80 tau raug tshem tawm; hybrid stepping hais txog kev sib xyaw ntawm cov hlau nplaum ruaj khov thiab qhov zoo ntawm cov tshuaj tiv thaiv hom. Nws muab faib ua ob-theem thiab tsib-theem: ob-theem stepping lub kaum sab xis feem ntau yog 1.8 degrees thiab tsib-theem stepping kaum feem ntau yog 0.72 degrees. Hom stepper motor no yog
Hom stepper lub cev muaj zog no yog siv dav tshaj plaws.
3. Tuav Torque yog dab tsi?
Tuav torque (HOLDING TORQUE) yog hais txog lub torque uas lub stator xauv lub rotor thaum lub kauj ruam lub cev muaj zog tab sis tsis tig. Nws yog ib qho tseem ceeb tshaj plaws ntawm lub cev muaj zog stepper, thiab feem ntau lub torque ntawm lub stepper lub cev muaj zog ntawm qis speeds yog ze rau lub tuav torque. Txij li thaum cov zis torque ntawm lub stepper lub cev muaj zog txuas ntxiv mus rau qhov nrawm nrawm, thiab cov zis hluav taws xob hloov pauv nrog kev nce nrawm, lub zog tuav tau dhau los ua ib qho tseem ceeb tshaj plaws rau kev ntsuas lub zog stepper. Piv txwv li, thaum tib neeg hais tias 2N.m stepping motor, nws txhais tau hais tias lub stepping motor nrog tuav lub zog ntawm 2N.m yam tsis muaj cov lus qhia tshwj xeeb.
4. DETENT TORQUE yog dab tsi?
DETENT TORQUE yog lub zog torque uas stator xauv lub rotor thaum lub kauj ruam tsis muaj zog.DETENT TORQUE tsis muaj kev sib koom ua ke hauv Suav teb, uas yooj yim rau kev nkag siab yuam kev; txij li thaum lub rotor ntawm lub reactive stepping lub cev muaj zog tsis yog ib qho khoom siv hlau nplaum ruaj khov, yog li nws tsis muaj DETENT TORQUE.
5. Dab tsi yog qhov precision ntawm stepping motor? Puas yog cumulative?
Feem ntau, qhov tseeb ntawm stepper lub cev muaj zog yog 3-5% ntawm lub kaum sab xis, thiab nws tsis suav nrog.
6. Dab tsi yog qhov tso cai kub ntawm stepper motor sab nrauv?
Qhov kub siab ntawm stepping lub cev muaj zog yuav ua ntej demagnetize cov khoom sib nqus ntawm lub cev muaj zog, uas yuav ua rau torque poob los yog txawm tias tawm ntawm kauj ruam, yog li qhov siab tshaj plaws kub tso cai rau sab nrauv ntawm lub cev muaj zog yuav tsum nyob ntawm qhov demagnetization point ntawm cov khoom sib nqus. cov motors sib txawv; Feem ntau, qhov demagnetization point ntawm cov khoom sib nqus yog ntau dua 130 degrees Celsius, thiab qee qhov ntawm lawv txawm tias siab tshaj li 200 degrees Celsius, yog li nws yog ib txwm zoo rau sab nrauv ntawm lub stepping motor nyob rau hauv qhov kub thiab txias. ntawm 80-90 degrees Celsius.
7. Vim li cas lub torque ntawm stepping lub cev muaj zog txo nrog qhov nce ntawm rotating ceev?
Thaum lub kauj ruam lub cev muaj zog tig, lub inductance ntawm txhua theem ntawm lub cev muaj zog winding yuav tsim ib tug rov qab electromotive quab yuam; qhov siab dua qhov zaus, qhov loj dua qhov rov qab electromotive quab yuam. Raws li nws qhov kev nqis tes ua, lub cev muaj zog theem tam sim no txo ​​qis nrog qhov nce ntawm zaus (lossis nrawm), uas ua rau txo qis ntawm torque.
8. Vim li cas stepper lub cev muaj zog tuaj yeem khiav ib txwm nyob ntawm qhov qis qis, tab sis yog tias siab dua li qhov ceev tsis tuaj yeem pib, thiab nrog xuav?
Stepping lub cev muaj zog muaj ib qho kev ntsuas: tsis muaj-load pib zaus, uas yog, mem tes zaus ntawm stepping lub cev muaj peev xwm pib ib txwm nyob rau hauv tsis muaj load, yog hais tias tus mem tes zaus siab tshaj tus nqi no, lub cev muaj zog tsis tuaj yeem pib ib txwm, thiab nws yuav tshwm sim. poob kauj ruam los yog thaiv. Nyob rau hauv cov ntaub ntawv ntawm ib tug load, qhov pib zaus yuav tsum qis dua. Yog hais tias lub cev muaj zog yuav tsum tau ua tiav kev sib hloov ceev, cov mem tes zaus yuav tsum tau nrawm, piv txwv li, qhov pib zaus qis, thiab tom qab ntawd nce mus rau qhov xav tau siab zaus (lub cev muaj zog los ntawm qis mus rau siab) ntawm qee qhov acceleration.
9. Yuav ua li cas kov yeej kev vibration thiab suab nrov ntawm ob-theem hybrid stepping lub cev muaj zog ntawm qis ceev?
Kev vibration thiab suab nrov yog qhov tsis zoo ntawm stepper motors thaum tig qis qis, uas feem ntau tuaj yeem kov yeej los ntawm cov kev pabcuam hauv qab no:
A. Yog hais tias lub stepping lub cev muaj zog tshwm sim los ua hauj lwm nyob rau hauv resonance cheeb tsam, lub resonance cheeb tsam yuav zam tau los ntawm kev hloov qhov txo qhov ratio thiab lwm yam mechanical kis tau tus mob;
B. Txais tus neeg tsav tsheb nrog kev ua haujlwm subdivision, uas yog txoj kev siv ntau tshaj plaws thiab yooj yim tshaj plaws;
C. Hloov nrog stepping lub cev muaj zog nrog lub kaum sab xis me, xws li peb-theem lossis tsib-theem stepping lub cev muaj zog;
D. Hloov mus rau AC servo motors, uas yuav luag tag nrho cov kev vibration thiab suab nrov, tab sis ntawm tus nqi siab dua;
E. Nyob rau hauv lub cev muaj zog ncej nrog ib tug sib nqus damper, kev ua lag luam muaj xws li cov khoom, tab sis cov neeg kho tshuab qauv ntawm kev hloov loj.
10. Puas yog qhov subdivision ntawm tus tsav tsheb sawv cev qhov tseeb?
Stepper motor interpolation yog qhov tseem ceeb ntawm cov tshuab hluav taws xob damping (thov xa mus rau cov ntaub ntawv tseem ceeb), lub hom phiaj tseem ceeb ntawm kev ua kom lub cev muaj zog los yog tshem tawm cov kev vibration tsawg zaus ntawm stepper lub cev muaj zog, thiab txhawm rau txhim kho lub cev muaj zog khiav qhov tseeb tsuas yog ua haujlwm tsis zoo. ntawm interpolation technology. Piv txwv li, rau ob-theem hybrid stepping lub cev muaj zog nrog lub kaum sab xis ntawm 1.8 degree, yog tias tus neeg tsav tsheb interpolation tus lej interpolation yog teem rau 4, ces lub cev muaj zog khiav kev daws teeb meem yog 0.45 degree ib pulse. Txawm hais tias lub cev muaj zog qhov tseeb tuaj yeem ncav cuag lossis mus txog 0.45 degree kuj yog nyob ntawm lwm yam xws li qhov tseeb ntawm kev tswj xyuas tam sim no ntawm tus neeg tsav tsheb interpolation. Txawv manufacturers ntawm subdivided tsav precision yuav txawv heev; qhov loj dua cov ntsiab lus subdivided qhov nyuaj los tswj cov precision.
11. Dab tsi yog qhov sib txawv ntawm kev sib txuas ntawm kev sib txuas thiab kev sib txuas ntawm plaub-theem hybrid stepping tsav thiab tsav tsheb?
Plaub-theem hybrid stepping lub cev muaj zog feem ntau yog tsav los ntawm ob-theem tsav tsheb, yog li qhov kev sib txuas tuaj yeem txuas nrog hauv series lossis kev sib txuas sib txuas yuav yog plaub-theem lub cev muaj zog txuas nrog ob-theem siv. Series kev twb kev txuas feem ntau yog siv nyob rau hauv lub cev muaj zog ceev ntawm lub ntees, lub sij hawm no tus neeg tsav tsheb tso zis tam sim no yuav tsum tau rau lub cev muaj zog theem tam sim no ntawm 0.7 lub sij hawm, yog li lub cev muaj zog tshav kub yog me me; Txoj kev sib txuas sib txuas feem ntau yog siv rau hauv lub cev ceev ntawm lub ntees (tseem hu ua txoj kev sib txuas ceev), tus tsav tsheb tso zis tam sim no xav tau rau lub cev muaj zog theem tam sim no ntawm 1.4 npaug, yog li lub cev muaj zog cua sov loj dua.
12. Yuav ua li cas txiav txim siab tus tsav tsheb stepper DC fais fab mov?
A. Kev txiav txim siab ntawm qhov voltage
Hybrid stepper lub cev muaj zog tsav tsheb fais fab mov voltage feem ntau yog ntau yam (xws li IM483 fais fab mov voltage ntawm 12 ~ 48VDC), lub hwj chim mov voltage feem ntau yog raws li lub cev muaj zog kev khiav hauj lwm ceev thiab cov lus teb yuav tsum tau xaiv. Yog hais tias lub cev muaj zog ua hauj lwm ceev yog siab los yog cov lus teb yuav tsum tau ceev, ces tus nqi voltage kuj siab, tab sis xyuam xim rau lub ripple ntawm lub hwj chim mov voltage tsis tau tshaj qhov siab tshaj plaws input voltage ntawm tus neeg tsav tsheb, txwv tsis pub tus tsav tsheb yuav puas. .
B. Kev txiav txim siab tam sim no
Lub hwj huam mov tam sim no feem ntau txiav txim siab raws li cov zis theem tam sim no I ntawm tus neeg tsav tsheb. Yog tias siv cov khoom siv hluav taws xob tawm, lub zog hluav taws xob tam sim no tuaj yeem yog 1.1 txog 1.3 npaug ntawm I. Yog tias siv lub zog hloov pauv, qhov hluav taws xob tam sim no tuaj yeem yog 1.5 txog 2.0 zaus ntawm I.
13 hybrid stepper tsav tsav offline teeb liab dawb feem ntau siv nyob rau hauv dab tsi tshwm sim?
Thaum lub teeb liab offline DAWB tsawg, cov zis tam sim no los ntawm tus tsav tsheb mus rau lub cev muaj zog raug txiav tawm thiab lub cev muaj zog rotor nyob hauv lub xeev dawb (offline xeev). Hauv qee cov khoom siv automation, yog tias koj yuav tsum tau tig lub cev muaj zog ncaj qha (manually) yam tsis muaj lub zog tsav, koj tuaj yeem teeb lub teeb liab DAWB qis kom coj lub cev muaj zog offline rau kev tuav haujlwm lossis hloov kho. Tom qab phau ntawv ua haujlwm tiav, teeb tsa DAWB teeb liab siab dua kom tswj tsis siv neeg txuas ntxiv.
14. Yuav ua li cas yog tias kuv siv txoj kev yooj yim los kho cov kev taw qhia ntawm kev sib hloov ntawm ob-theem stepping lub cev muaj zog thaum nws muaj zog?
Tsuas yog ua raws A + thiab A- (lossis B + thiab B-) ntawm lub cev muaj zog thiab tsav tsheb.
Hais txog txoj cai subdivision ntawm tus tsav tsheb thiab qee cov lus qhia ntsig txog
Nyob rau hauv txawv teb chaws, rau lub stepping system, lub ntsiab siv ntawm ob-theem hybrid stepping lub cev muaj zog thiab cov coj subdivision tsav. Tab sis nyob rau hauv Suav teb, feem ntau ntawm cov neeg siv ntawm "subdivision" tsis yog ib tug tshwj xeeb kev nkag siab, ib txhia tsuas xav hais tias lub subdivision yog los txhim kho qhov tseeb, qhov tseeb, tsis yog, lub subdivision yog tsuas yog los txhim kho kev ua tau zoo ntawm lub cev muaj zog yog piav raws li. cov hauv qab no: stepper motor subdivision tswj yog tswj los ntawm tus neeg tsav tsheb kom raug tswj cov theem tam sim no ntawm stepper lub cev muaj zog kom ua tiav, mus rau ob-theem lub cev muaj zog, piv txwv li, yog tias qhov ntsuas theem tam sim no ntawm lub cev muaj zog yog 3A, yog hais tias lub cev muaj zog yog tsav los ntawm ib tug neeg tsav tsheb (xws li cov feem ntau siv tas li-tam sim no chopper), txhua kauj ruam ntawm lub cev muaj zog ua hauj lwm, tam sim no nyob rau hauv lub winding yuav hloov ntawm 0 mus rau 3A los yog los ntawm 3A mus rau { {7}}. Kev hloov loj ntawm theem tam sim no yuav ua rau muaj kev vibration thiab suab nrov ntawm lub cev muaj zog. Yog hais tias kev siv subdivided tsav, nyob rau hauv lub xeev ntawm 10 subdivided tsav lub cev muaj zog, lub cev muaj zog khiav txhua micro-kauj ruam, tam sim no hloov nyob rau hauv nws winding tsuas yog 0.3A es tsis yog 3A, thiab tam sim no yog ib tug sinusoidal. nkhaus txoj cai hloov, kom lub cev muaj zog vibration thiab suab nrov zoo heev, yog li ntawd, qhov zoo ntawm kev ua tau zoo yog qhov zoo tiag tiag ntawm kev sib faib. Raws li lub subdivided tsav kom raug tswj cov theem tam sim no ntawm lub cev muaj zog, yog li tus tsav kom muaj kev ncaj ncees siab thiab cov txheej txheem yuav tsum tau ua, tus nqi kuj yuav siab dua. Nco ntsoov tias qee tus neeg tsav tsheb hauv tsev siv "nruj" los hloov lub subdivision, qee qhov hu ua subdivision, tab sis qhov no tsis yog qhov subdivision tiag tiag, vam tias feem coob ntawm cov neeg siv yuav tsum paub qhov txawv ntawm ob qhov tseem ceeb sib txawv:

15. "Smoothing" tsis raug tswj cov theem tam sim no ntawm lub cev muaj zog, tab sis tsuas yog ua kom qeeb ntawm qhov kev hloov pauv tam sim no, yog li "smoothing" tsis tsim cov kauj ruam micro, thiab cov kauj ruam me me tuaj yeem siv kom raug. txiav txim txoj hauj lwm.
16. Tom qab theem tam sim no ntawm lub cev muaj zog yog smoothed, nws yuav ua rau lub cev muaj zog torque poob, thaum lub subdivision tswj yuav tsis ua rau lub cev muaj zog torque poob, ntawm qhov tsis tooj, lub torque yuav nce.
17. Qhov sib txawv ntawm ob-theem thiab tsib-theem hybrid stepper motors yog dab tsi?
Lo lus teb:
Feem ntau hais lus, ob-theem lub cev muaj zog nrog cov kauj ruam loj muaj cov yam ntxwv siab ceev, tab sis muaj qhov qis qis qis. Tsib-theem motors muaj lub kaum sab xis me me thiab ua haujlwm zoo ntawm qhov nrawm. Yog li ntawd, nyob rau hauv lub cev muaj zog khiav qhov yuav tsum tau muaj siab, thiab feem ntau nyob rau hauv qis-ceev seem (feem ntau tsawg tshaj li 600 rpm) ntawm lub sij hawm yuav tsum tau siv tsib-theem lub cev muaj zog; ntawm qhov tsis sib xws, yog tias nrhiav kev ua haujlwm siab ntawm lub cev muaj zog, qhov raug thiab du ntawm lub sijhawm uas tsis muaj ntau yam yuav tsum tau xaiv ntawm tus nqi qis ntawm ob-theem motors. Tsis tas li ntawd, lub torque ntawm tsib-theem motors feem ntau yog ntau tshaj 2NM, daim ntawv thov ntawm lub zog me me, ob-theem motors feem ntau yog siv, thiab qhov teeb meem ntawm kev sib tw qis tuaj yeem daws tau los ntawm kev siv cov tsav tsheb sib cais.
Piv nrog stepper motors, servo motors muaj cov hauv qab no zoo:
1, lub realization ntawm txoj hauj lwm, ceev thiab torque kaw-voj tswj; kov yeej qhov teeb meem ntawm stepping motor tawm ntawm kauj ruam;
2, kev ua haujlwm siab ceev, qhov ntsuas dav dav tuaj yeem ncav cuag 2000 ~ 3,000 rpm;
3, muaj zog overload tsis kam, tuaj yeem tiv taus peb zaug ntawm qhov ntsuas torque ntawm lub thauj khoom, qhov kev hloov pauv sai sai thiab qhov yuav tsum tau ua rau lub sijhawm pib sai yog qhov tshwj xeeb;
4, kev ua haujlwm qis qis yog du, kev ua haujlwm qis qis yuav tsis tsim qhov tshwm sim zoo sib xws ntawm kev ua haujlwm ntawm stepper lub cev muaj zog. Haum rau cov lus teb ceev ceev ntawm lub sijhawm;
5, lub cev muaj zog acceleration thiab deceleration ntawm lub dynamic sib raug lub sij hawm luv luv, feem ntau nyob rau hauv ob peb kaum milliseconds; 6, cua sov thiab suab nrov yog txo qis.