2.2 Muaj teeb meem
Nyob rau hauv tus txheej txheem ntawm kev tsim cov kev kawm siab khov kho synchronous lub cev, tib lub sij hawm, cov ntsiab lus saum toj no tau raug tau, thiab qee qhov teeb meem tau raug, uas yuav tsum tau kawm ntxiv thiab tshawb.
1) Qhov teeb meem tsis sib haum xeeb. Yog tias tus qauv tsim lossis siv tsis zoo, lub tshuab hluav taws xob uas muaj qhov sib txuas ntawm sab nraud yog nyob hauv siab dhau heev (NdFeB tsis muaj hlau nplaum) los sis qis heev (ferrite ntev magnet), nyob rau hauv qhov teeb meem ntawm qhov teeb meem tshwm sim, los yog hauv kev kho siab loj heev thaum nyob ntawd yog ib qho kev ua tsis taus ntawm kev tsis sib haum xeeb, los yog poob ntawm qhov magnetism, qhov kev kawm ntawm lub cav yog degraded los yog txawm tsis yooj yim sua tau siv.
Yog li ntawd, nws yog qhov tsim nyog rau kev tshawb nrhiav thiab tsim cov cuab yeej thiab cov cuab yeej siv rau kev soj ntsuam thermal stability ntawm cov khoom siv hlau ruaj khov siv hauv lub tshuab fais fab, thiab tshawb xyuas cov cuab yeej ua kom tsis muaj zog ntawm ntau hom qauv, thiaj li xyuas kom siv cov kev ntsuas coj los tsim thiab kev tsim khoom. Lub tshuab sib nqus hlau synchronous tsis poob magnetism.
2) Cov nqi teeb meem. Ferrite ntev phom synchronous motors tau dav siv vim yog lawv cov qauv yooj yim tus qauv thiab txo pawg, thiab tag nrho cov nqi yog qis tshaj qhov ntawm hluav taws xob excitation motors. Vim tias cov nqi ntawm cov hlau nplaum tsis tshua muaj lub ntiaj teb no tseem kim heev, tus nqi qis ntawm lub ntiaj teb tsis tshua muaj hlau nplaum yog feem ntau siab tshaj ntawm cov hluav taws xob excitation motors, uas yuav tsum tau them nyiaj rau nws cov kev ua tau zoo thiab kev khiav hauj lwm cov nqi. Hauv kev tsim, nws yog ib qho tsim nyog los sib piv cov kev ua tau zoo thiab tus nqi raws li cov sijhawm siv thiab cov tseev tsim nyog, thiab tseem ua tiav cov qauv kev tsim kho tshiab thiab tsim kev tsim kho kom txo tau cov nqi.
3) Tswj cov teeb meem. Ib qho chaw ua haujlwm sab nraud synchronous cav tswj nws qhov chaw magnetic tsis muaj zog, tab sis nws kuj ua rau nws nyuab nyuab heev los kho thiab tswj nws qhov chaw ntawm magnetic tawm sab nraud. Txawm li cas los xij, nrog rau kev tsim hluav taws xob hluav taws xob thiab tswj cov cuab yeej xws li MOSFET thiab IGBTs, feem ntau cov hlau nplaum synchronous cav yuav siv rau cov tswj kev tswj tsis muaj hlau nplaum. Tus tsim yuav tsum ua ke ntawm peb cov tshiab yees: cov khoom siv rau sab nraud, hluav taws xob hluav taws xob thiab microcomputer tswj kom lub tshuab ua haujlwm sab nraud synchronous khiav hauv kev ua haujlwm tshiab. Tsis tas li ntawd, lub tshuab hluav taws xob uas muaj qhov sib txuas ua ke nrog lub tshuab synchronous nrog cov twj paj nruag tas li ua tus actuator muaj ib yam nonlinearity, muaj zog khawm thiab lub sijhawm sib hloov, thiab nws cov khoom servo kuj muaj zog tsis meej. Thiab non-linear, coupled nrog lub system yog raug cov teeb meem sib txawv ntawm kev cuam tshuam, yog li siv cov tswv yim tswj cov kev tshaj lij, kev tswj qhov kev tshaj tswj (xws li DSP-based tswj), los txhim kho qhov kev txawj ntse thiab cov qib theem ntawm lub cev, qhov no yuav tsum yog tam sim no Ib qho kev loj hauv kev loj hlob hauv kev loj hlob ntawm kev kawm siab mus ib ntus synchronous lub cev servo systems.
