Txoj Cai Ua Haujlwm Ntawm Brushless DC Tsav

Brushless DC lub cev muaj zog yog ib yam khoom siv mechatronics uas tsim los ntawm lub cev lub cev thiab tsav tsheb. Lub stator winding ntawm lub tshuab hluav taws xob feem ntau ua rau hauv peb-theem symmetrical lub hnub qub kev sib txuas, uas zoo ib yam li peb-theem asynchronous lub cev muaj zog. Lub rotor ntawm lub tshuab hluav taws xob yog adhered nrog cov hlau nplaum ruaj khov, thiab txhawm rau txhawm rau txheeb xyuas qhov polarity ntawm lub cev muaj zog rotor, txoj hauj lwm sensor yog ntsia rau hauv lub cev muaj zog. Tus neeg tsav tsheb yog tsim los ntawm cov khoom siv hluav taws xob hluav taws xob thiab kev sib xyaw ua ke, thiab nws txoj haujlwm yog kom tau txais qhov pib, nres, thiab nres nres ntawm lub cev muaj zog los tswj qhov pib, nres, thiab nres ntawm lub cev muaj zog; Tau txais txoj hauj lwm sensor teeb liab thiab rau pem hauv ntej thiab thim rov qab cov cim los tswj lub on / off ntawm txhua lub hwj chim transistor nyob rau hauv inverter choj, generating nruam torque; Tau txais cov lus txib ceev thiab ceev cov lus tawm tswv yim los tswj thiab kho qhov ceev; Muab kev tiv thaiv thiab tso saib, thiab lwm yam.
DC motors muaj cov lus teb ceev ceev, pib lub zog loj, thiab muaj peev xwm muab cov ntsuas torque los ntawm xoom nrawm mus rau qhov ntsuas ceev. Txawm li cas los xij, qhov zoo ntawm DC motors kuj yog lawv qhov tsis zoo, raws li txhawm rau tsim kom muaj lub zog tas li nyob rau hauv kev ntsuas load, lub armature thiab rotor magnetic teb yuav tsum tau khaws cia ntawm lub kaum sab xis ntawm 90 degree, uas yuav tsum tau siv cov pa roj carbon txhuam thiab commutators. Cov pa roj carbon txhuam thiab cov commutators tsim cov nplaim taws thiab cov toner thaum lub cev muaj zog tig, uas tsis yog tsuas yog ua rau cov khoom puas tsuaj xwb tab sis kuj txwv lawv txoj kev siv. AC motors tsis muaj carbon txhuam los yog commutators, uas yog kev saib xyuas dawb, ruaj khov, thiab dav siv. Txawm li cas los xij, txhawm rau ua tiav qhov kev ua tau zoo sib npaug rau DC motors ntawm cov yam ntxwv, cov txheej txheem tswj kev nyuaj yuav tsum tau ua. Niaj hnub no, nrog rau kev loj hlob sai ntawm semiconductors, kev hloov zaus ntawm cov khoom siv hluav taws xob tau nrawm dua, txhim kho kev ua haujlwm ntawm kev tsav tsheb. Lub microprocessor tseem tab tom ua nrawm dua thiab nrawm dua, uas tuaj yeem tso AC lub cev muaj zog tswj nyob rau hauv kev sib hloov ob axis Cartesian tswj qhov system, tswj cov khoom tam sim no ntawm AC lub cev muaj zog hauv ob lub axes, thiab ua tiav DC lub cev muaj zog zoo sib xws thiab muaj tib yam. kev ua haujlwm zoo li DC lub cev muaj zog.
Tsis tas li ntawd, ntau lub microprocessors tau muab cov haujlwm tsim nyog rau kev tswj cov motors rau hauv lawv cov chips, thiab lawv qhov ntim tau dhau los ua me thiab me; Piv txwv xws li analog to digital converters (ADCs), mem tes dav modulators (PWM), thiab lwm yam. DC brushless lub cev muaj zog yog ib daim ntawv thov uas electronically tswj kev sib hloov ntawm AC motors kom tau cov yam ntxwv zoo ib yam li DC motors tsis ploj DC motor mechanisms.