Servo Tsav Rotor Xaiv Phau Ntawv Qhia: Kev Tsim Kho Vaj Tse Raws li Rated Torque
Hauv kev tsim qauv engineering ntawm servo systems, rotor xaiv ncaj qha txiav txim siab lub cev muaj peev xwm tsim tawm, cov lus teb tsis zoo, thiab ntev - lub sijhawm ua haujlwm kev ntseeg siab. Raws li cov ntsiab lus tseem ceeb ntawm lub rotor, qhov sib txuam qhov tseeb ntawm qhov ntsuas torque tsis tsuas yog cuam tshuam rau kev ua haujlwm ntawm cov khoom siv, tab sis kuj tseem cuam tshuam nrog kev siv hluav taws xob, nqi tu, thiab lub neej - voj voog tus nqi. Los ntawm daim ntawv thov engineering, tsab xov xwm no piav qhia txog kev tshawb fawb txog kev xaiv lub servo lub cev muaj zog rotor raws li qhov ntsuas torque, muab cov ntaub ntawv siv rau cov kws tsim hluav taws xob thiab cov kev sib koom ua ke.
1. Technical Connotation ntawm Rated Torque
Rated torque yog txhais raws li cov zis torque uas lub servo lub cev muaj peev xwm xa tau nyob rau hauv tas li ntev - lub sij hawm ua hauj lwm ntawm rated ceev, raws li ib tug teev hom dej num (piv txwv li, S1 tas li lub luag hauj lwm), thaum lub winding kub nce tsis tshaj qhov txwv tso cai los ntawm lub rwb thaiv tsev chav kawm ntawv. Qhov kev ntsuas no tau txiav txim siab ua ke los ntawm kev tsim hluav taws xob, hluav taws xob cua sov, thiab cov khoom siv thermal hauv chav kawm, thiab ua haujlwm raws li kev ntsuas ntau ntawm lub cev muaj zog qhov nruam load- nqa lub peev xwm.
Thaum xaiv, nco ntsoov tias qhov ntsuas torque txawv ntawm qhov siab tshaj plaws torque (tom kawg tsuas yog luv luv - lub sijhawm muaj peev xwm dhau, feem ntau kav ntev li ob peb feeb). Yog hais tias qhov kev khiav hauj lwm tas mus li torque tshaj qhov ntsuas tus nqi, lub cev muaj zog yuav nkag mus rau hauv lub tshav kub tsub zuj zuj ntawm lub xeev - ntawm qhov zoo tshaj plaws ua rau muaj kev tiv thaiv overload, qhov phem tshaj ua rau cov hlau nplaum ruaj khov demagnetization lossis winding burnout. Conversely, ntau tshaj rated torque margin txhais tau tias tsis tsim nyog nce nyob rau hauv inverter muaj peev xwm, yam ntxwv qhov ntev, thiab cov nqi yuav khoom. Yog li ntawd, qhov sib piv ntawm cov ntsuas torque yog qhov sib npaug ntawm kev lag luam thiab kev nyab xeeb.
2. Kev soj ntsuam ntawm kev siv cov xwm txheej
Ua ntej xaiv, peb qhov kev sau cov ntaub ntawv yuav tsum ua kom tiav los tsim kom tiav qhov profile ntawm torque yuav tsum tau ua.
2.1 Qhov tseeb xam ntawm Load Torque
Load torque muaj xws li static thiab dynamic Cheebtsam:
- Static load torque: torque yuav tsum tau kov yeej tsis tu ncua xws li lub ntiajteb txawj nqus, kev sib txhuam, thiab lub caij nplooj ntoos hlav rog -xws li, sib npaug torque ntawm ntsug axes, zawv zawg kev sib txhuam torque ntawm cov lus qhia.
- Dynamic load torque: ntxiv inertia torque yuav tsum tau thaum lub sij hawm acceleration/deceleration theem raws li Newton txoj cai thib ob, xam raws li \\( T_{dyn}=J \\cdot \\alpha \\) (qhov twg \\(J \\) yog tag nrho lub sij hawm ntawm inertia xa mus rau lub cev muaj zog ncej, thiab \\( \\alphaang ).
Kev xyaum qhia tau hais tias nyob rau hauv siab -kev pib ceev- nres daim ntawv thov, dynamic load torque feem ntau suav rau ntau tshaj 60% ntawm tag nrho cov kev thov thiab yuav tsum tsis txhob tsis quav ntsej.
2.2 Ceev – Torque yam ntxwv nkhaus
Lub peev xwm tso zis ntawm lub servo lub cev muaj zog txo qis thaum nce nrawm (tsuas yog rov qab -EMF thiab hlau poob). Qhov siab tshaj plaws ceev, ntsuas ceev, thiab feem ntau siv ceev ntau ntawm daim ntawv thov yuav tsum tau hais kom meej meej, thiab cov chaw tsim tshuaj paus "kev ua hauj lwm yam ntxwv cheeb tsam" daim duab yuav tsum tau hais los xyuas kom meej tias qhov yuav tsum tau torque nyob rau hauv tag nrho cov speeds nyob rau hauv qis dua qhov tso zis tas li ntawm qhov ceev.
2.3 Hom Lub Luag Haujlwm thiab Load Duty Cycle
Raws li IEC 60034-1, hom dej num muaj xws li S1 (nruam) thiab S3 (ib ntus ntu), thiab lwm yam. Rau S3 lub luag haujlwm, lub luag haujlwm thauj khoom lub voj voog \\(ED=t_{on} / (t_{on} + t_{off}) \\times 100\\% \\) yuav tsum tau xam. Thaum ED qis dua 60%, lub rotor nrog qis qis torque tuaj yeem raug xaiv (siv lub sijhawm so rau cov cua sov dissipation), tab sis qhov kub nce nkhaus yuav tsum raug txheeb xyuas kom tsis txhob muaj cua sov ntau dhau.
3. Kev txiav txim siab txog kev siv hluav taws xob thiab kev tswj tsis tau
High-efficiency rotors (piv txwv li, siv qis- hlau- poob silicon steel los xij thiab siab-kev ua tau zoo tsis tshua muaj- cov hlau nplaum hauv ntiaj teb) hloov hluav taws xob ntau rau hauv lub zog txhua yam, txo cov tooj liab thiab poob hlau. Nyob rau tag nrho lub neej voj voog, kev txhim kho kev ua tau zoo ntawm 2%–3% tuaj yeem rov qab tau tus nqi pib hauv kev ua haujlwm tas mus li{10}}. Tsis tas li ntawd, qhov qis-tsim poob ncaj qha txo cov thermal stress ntawm bearings thiab encoders, ncua tag nrho lub tshuab lub neej. Thaum xaiv, qhov tseem ceeb yuav tsum tau muab rau IE cov chav kawm kev siv hluav taws xob los yog qhov ua tau zoo-load nkhaus muab los ntawm cov chaw tsim khoom, zam kev ua haujlwm hauv cov cheeb tsam qis (qhov kev ua tau zoo feem ntau poob qis).
4. System Compatibility Verification
Lub rotor tsis yog ib qho kev sib cais; nws cov kev xaiv yuav tsum tau koom tes nrog lwm yam servo system Cheebtsam:
- Stator winding: paub meej tias tus naj npawb ntawm rotor magnet ncej khub sib tw stator slot tooj thiab txoj kev sib txuas winding; txwv tsis pub, ntxiv torque ripple yuav tshwm sim.
- Servo lub cev muaj zog connector thiab encoder cable: xyuas cov ntsiab lus ntawm kev sib txuas, kev tiv thaiv kev tiv thaiv, thiab qhov siab tshaj plaws tso cai tam sim no kom ntseeg tau tias cov teeb liab kis tau tus mob, tshwj xeeb tshaj yog nyob rau hauv siab - zaus PWM tsav los tiv thaiv electromagnetic cuam tshuam.
- Nres cable thiab tuav nres: yog tias yuav tsum muaj kev ruaj ntseg braking rau daim ntawv thov, xyuas kom meej tias lub nres tso tawm tam sim no zoo ib yam nrog lub zog tso zis, thiab tias lub braking torque yog ntau dua 1.5 npaug ntawm cov khoom zoo li qub.
Kev sib raug zoo tsis zoo yuav qhia txog kev ua haujlwm tsis zoo, kev poob qis, lossis qhov kub tsis zoo nce ntxiv -cov no yog qhov ua rau ntawm - qhov chaw tsis ua haujlwm.
5. Kev soj ntsuam kev muaj peev xwm ntawm tus neeg muab khoom
Rotor manufacturing zoo ncaj qha txiav txim qhov tsis sib xws (piv txwv li, sib nqus flux, dynamic tshuav qib). Thaum ntsuam xyuas cov neeg muab khoom, yuav tsum tau saib xyuas rau:
- Cov khoom siv: seb puas siv cov khoom siv hlau nplaum thiab cov ntaub ntawv pov thawj;
- Cov txheej txheem tswj: dynamic tshuav precision (G2.5 qib lossis siab dua), ya raws - pov thawj thiab kev co- tiv taus cov txheej txheem potting muaj peev xwm;
- Cov ntaub ntawv ntsuam xyuas: seb puas ua tiav torque-ceev nkhaus, cov ntaub ntawv ntsuas kub nce, thiab cov txiaj ntsig kev ntsuas ua haujlwm tau muab;
- Kev txhawb nqa: txawm tias xaiv software lossis engineering suav cov cuab yeej muaj los pab cov neeg siv khoom hauv kev txheeb xyuas qhov tsis muaj zog xws li inertia piv thiab acceleration/deceleration times.
6. Kev Lag Luam Kev Lag Luam - tawm tswv yim
Kev txheeb xyuas tus nqi yuav tsum suav nrog peb ntu: tus nqi pib yuav khoom, nqi hluav taws xob ua haujlwm, thiab tus nqi kho / hloov pauv. Lub rotor nrog lub zog qis qis muaj tus nqi pib qis dua, tab sis yog tias nws ua haujlwm ze rau qhov ntsuas ntsuas rau lub sijhawm ntev, cov nqi zais los ntawm kev ua haujlwm tsis zoo thiab lub sijhawm poob rau kev saib xyuas yuav ntau dua qhov kev txuag nyiaj. Conversely, ntau cov npoo (xws li, xaiv ib tug rated torque ntau tshaj ob zaug qhov tiag tiag xav tau) yuav ua rau kom muaj peev xwm tsav tsheb thiab cuam tshuam qhov system inertia piv, ua tau degrading dynamic teb. Nws raug nquahu kom ua raws li qhov sib txawv ntawm qhov piv txwv "rated torque Ntau dua lossis sib npaug rau qhov nruam load torque × 1.1-1.3" thiab kho kom tsim nyog raws li pib- nres zaus thiab cuam tshuam.
7. Cov ntsiab lus ntawm Cov Txheej Txheem Kev Txiav Txim Siab
1. xam qhov nruam load torque thiab ncov load torque, thiab npaj lub torque-lub sij hawm nkhaus;
2. Txiav txim siab hom dej num thiab qhov ceev, thiab ua ntej xaiv tus qauv rotor;
3. Txheeb xyuas qhov muaj peev xwm thermal (siv lub sijhawm thermal tsis tu ncua thiab ntsuas kub nce siab);
4. Txheeb xyuas cov hluav taws xob thiab cov khoom siv sib txuas nrog stator, encoder, thiab nres;
5. Sib piv cov ntaub ntawv siv hluav taws xob thiab cov ntaub ntawv zoo los ntawm ntau tus neeg muag khoom;
6. Muab cov peev nyiaj thiab xa cov sij hawm ua kom tiav cov kev daws teeb meem.
Rated torque xaiv yog ib txoj haujlwm engineering uas ua ke nrog electromagnetics, thermodynamics, mechanical dynamics, thiab tswj tus nqi. Kev sib txuam tsis yog tsuas yog ua kom cov khoom ruaj khov ua haujlwm tab sis kuj muab lub hauv paus txhim khu kev qha rau cov kab ntau lawm. Tam sim no, kev ua lag luam muaj ntau yam khoom lag luam servo rotor, npog cov ntawv thov los ntawm micro-mos mus rau pua-kilowatt siab- lub zog hluav taws xob. Nws raug nquahu kom cov kws ua haujlwm sib txuas lus zoo nrog cov neeg tsim khoom paub txog thaum lub sijhawm tsim; leveraging lawv cov ntaub ntawv xeem thiab cov kev xaiv platforms yuav ua rau luv luv lub sij hawm pov thawj thiab txo kev sim - thiab - yuam kev txaus ntshai.
Yog xav paub ntxiv txog kev sib tham lossis kom tau txais cov qauv kev xaiv xaiv, thov hu rau peb pab pawg kws tshaj lij engineering-peb yuav muab cov lus qhia tshwj xeeb rau kev sib tw rotor raws li koj qhov kev ua haujlwm tshwj xeeb, nrog rau cov ntaub ntawv qhia ntxaws txog kev ua haujlwm. Kev xaiv zoo pib nrog kev suav cov lej thiab ua tiav los ntawm kev txheeb xyuas nruj.