Kev tsim kho ntawm cov hlau nplaum ruaj khov txhuam tsis ruaj DC DC lub cev muaj zog
Nrog rau kev txhim kho cov neeg nyob hauv cov qauv, cov khoom zoo, qhov tseeb, kev ua haujlwm, kev ua haujlwm, kev ua haujlwm, kev siv hluav taws xob, thiab tus nqi muaj txiaj ntsig yog qhov tseem ceeb hauv kev xaiv khoom siv hauv vaj hauv tsev. Lub tshuab hluav taws xob ruaj khov tsis muaj qhov tshwj xeeb ntawm cov qauv yooj yim, kev lag luam txhim kho, kev tswj xyuas yooj yim, thiab lwm yam, tab sis kuj muaj cov kev cai tswj hwm zoo xws li DC servo lub cev tsis muaj lub tshuab khoom lag luam. Nws tau raug siv ntau yam kev kho me ntsis. Tsav tsheb thaum caij nyoog. Qhov tshwm sim ntawm MOTOROLA's thib ob cim lub cev muaj peev xwm tswj tau ua kom zoo tsim nyog rau tus qauv tsim ntawm cov hlau nplaum hluav taws xob uas tsis tau txhuam kom ruaj khov DC kev tsav tsheb ceev ceev. Cov chips no muaj zog tswj zog, kev tiv thaiv zoo meej thiab kev ua haujlwm kom ruaj khov. Lub kaw lus muaj qhov yooj yim peripheral circuits thiab muaj zog tiv thaiv kev cuam tshuam. Nws yog tshwj xeeb tshaj yog rau qhov chaw ua hauj lwm cheeb tsam yog hnyav thiab cov tswj ntim thiab tus nqi ua tau zoo siab.
2 tus qauv kev tswj thiab tus qauv
2.1 cov qauv kev tswj
MC33035 yog lub cim thib ob ntawm brushless DC tsav tswj ASIC tsim los ntawm MOTORLORA. Nws ntxiv ib qho MC3309 hluav taws xob ceev ntes los hloov cov teeb liab rotor qhov teeb meem ntawm brushless DC lub cev rau F / V los tsim cov lus qhia tawm ceev ceev. Kaw lub voj kev kaw lus. Externally txuas nrog rau lub hwj huam hloov khoom siv rau peb theem hauv inverter, peb theem ntawm cov hlau txuas hluav taws xob txhuam tsis txhuam tsis zoo, txhawm rau tswj lub voj voog, raws li pom hauv daim duab 1. Hauv daim duab, S1 tswj kev tsav lub tsheb , thiab lub S2 tswj system pib thiab nres, S3 xaiv system qhib voj los yog kaw lub voj voog, S4 tswj nres nres, S5 xaiv tig
Lub teeb meem ntawm txoj hauj lwm kos npe yog 60 ° los sis 120 °, thiab S6 tswj tus pib dua ntawm qhov system. Potentiometer RP1 yog siv los ua kom lub zog khiav ceev, thiab lub teeb-emitting ob-phaj L1 yog siv ua txhaum.
Qhov teebmeem, thaum muaj teebmeem txoj haujlwm tsis muaj teebmeem, qhov tseem ceeb tshaj ntawm kev ua haujlwm, ib qho ntawm peb qhov teeb meem tsawg dua (chip voltage tsawg tshaj li 9.1V, tsav qhov hluav taws xob qhov tsawg tshaj 9.1V, reference voltage qis dua 4.5V), sab hauv overheating ntawm lub nti, Thaum pib thiab qhov xaus hnub nyoog yog tsawg, lub L1 illuminates lub tswb thiab yeej blocks lub system. Tom qab raug tshem tawm, qhov system tuaj yeem raug txum tim dua qub.
2.2 Kev tswj kav
3 nti muaj nuj nqi
3.1MC33035 cov kab tsim thiab ua haujlwm
Nws lub ntsiab yam muaj xws li:
(1) qhov rotor position sensor kev ntsuas seev;
(2) Internal reference fais fab mov nrog kev them nyiaj kub;
(3) Lub taub ntswg sawnoth nrog ib qho zaus;
(4) yuam kev amplifier;
(5) kev sib piv ntawm tus qauv mem tes (PWM) piv;
(6) ib qho hluav taws xob khiav hluav taws xob;
(7) Undervoltage blocking tiv thaiv tus ntiv tes los ntawm kev tiv thaiv kev overheat thiab lwm cov kev ua txhaum;
(8) Tam sim no lub limiting qhov.
Kev tswj cov kev tswj ntawm qhov kev sib tshuam integrated nrog PWM qhib qhib voj ceev tswj, tswj kev tswj (pib lossis tso tseg), rov qab thiab rov qab tswj thiab dynamic nres tswj, ntxiv ib co sab nraud lwm yam kom pib mos.
3.1.1 Rotor position sensor decoding circuit
3.1.2 yuam kev Amplifier
3.1.3 Pulse Width Modulator
3.1.4 Txwv tsis pub dhau
3.2MC33039 hluav taws xob speedometer
4 thwmsim thiab cov lus xaus
Yuav kom paub tseeb txog kev ua kom tiav thiab kev nyab xeeb ntawm yav dhau los txoj kev xav, kev sim tau ua tiav raws li tus qauv tsim.
4.1 Kev Npaj Ua
4.2 Qhov kev ntsuam xyuas
5 Xaus
Txawm hais tias muaj qee qhov tshwm sim uas tsis ua raws li cov kev tshawb nrhiav tau tshwm sim nyob rau hauv txoj kev sim, feem ntau, cov kev sim tau pom tau qhov kev xav tau, uas tau ua pov thawj rau cov tswv yim kev siv ntawm kev siv cov khoom siv kis kab mob rau tus me me tsis txhuam ntswj DC.
