Nyob rau hauv lub zog loj dua brushless lub cev muaj zog, tsav Circuit Court thiab tswj Circuit Court tuaj yeem ua ke sib cais. Tus tsav Circuit Court outputs hluav taws xob fais fab, tsav lub armature winding ntawm lub cev muaj zog, thiab yog tswj los ntawm kev tswj Circuit Court. Tam sim no, lub voj voog tsav tsheb tau hloov pauv los ntawm lub xeev kev nthuav dav mus rau lub plawv dhia dav hloov pauv hloov lub xeev, thiab cov khoom siv hluav taws xob sib txuas kuj tau hloov pauv los ntawm transistor discrete Circuit Court mus rau ib qho kev sib txuas ua ke. Modular integrated circuits yog tsim los ntawm lub hwj chim bipolar transistors, lub zog teb cov nyhuv transistors thiab cais rooj vag teb cuam tshuam bipolar transistors. Txawm hais tias lub rooj vag kev sib cais ntawm cov nyhuv bipolar transistor kim dua, nws yog qhov tsim nyog los xaiv nws los ntawm qhov pom ntawm kev ntseeg siab, kev nyab xeeb thiab kev ua haujlwm.
Kev tswj xyuas Circuit Court yog siv los tswj qhov ceev, kauj, tam sim no (los yog lub zog) ntawm lub tshuab tsis txhuam, thiab tiv thaiv lub cev los ntawm overcurrent, overvoltage, thiab overheating. Cov kev ntsuas saum toj no tau yooj yim hloov mus rau hauv cov cim analog, uas yooj yim rau kev tswj hwm, tab sis los ntawm kev xav ntawm kev txhim kho, qhov tsis muaj lub cev muaj zog yuav tsum tau hloov mus rau hauv cov lej digital, thiab lub cev muaj zog yuav tsum tau tswj los ntawm kev tswj hwm digital. Tam sim no, tswj Circuit Court muaj peb hom kev sib xyaw, xws li daim ntawv thov tshwj xeeb kev sib xyaw ua ke, microprocessor thiab cov teeb liab digital processor. Nyob rau hauv lub sij hawm uas qhov yuav tsum tau rau kev tswj lub cev muaj zog tsis siab, nws yog ib qho yooj yim thiab tswv yim txoj kev los tsim ib tug tswj Circuit Court nrog ib daim ntawv thov-specific integrated circuit. Kev siv cov teeb liab digital processors los tsim cov kab hluav taws xob tswj yog kev txhim kho yav tom ntej. Cov teeb liab digital processors yuav raug qhia hauv AC synchronous servo motors hauv qab no.
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