Isimiso se-modulator yesigaba.
I-modulator yesigaba iyisekhethi lapho isigaba senkampani yenethiwekhi silawulwa isignali eshintshiwe. Kunezindlela ezimbili eziyinhloko zokuguquguquka kwesigaba se-sine wave: ukuguquguquka kwesigaba esiqondile kanye nokuguquguquka kwesigaba okungaqondile. Ukuguquguquka kwesigaba okuqondile kuwukushintsha ngokuqondile amapharamitha weluphu ye-resonant ngokumodela isignali, ukuze ukuguquka kwesigaba kwenziwe lapho isignali yenkampani yenethiwekhi idlula iluphu ezwakalayo futhi yakhe igagasi lokumodulation lesigaba. Ukuguquguquka kwesigaba okungaqondile kuqala ukulungisa i-amplitude yegagasi eliguquliwe, bese uguqula ushintsho lwe-amplitude lube ushintsho lwesigaba, ukuze kuzuzwe ukuguquguquka kwesigaba. .
Ukufezeka okuphathekayo kokuguquguquka kwesigaba esiqondile kanye nokuguquguquka kwesigaba okungaqondile
Ukushintshwa kwesigaba esiqondile: kusetshenziswa isignali eshintshiwe ukuze uguqule ngokuqondile amapharamitha weluphu ezwakalayo, ukuze isiginali yenkampani yenethiwekhi ngokugudluka kwesigaba seluphu ezwakalayo. Le ndlela ilula futhi iqondile, kodwa idinga ukulawula okunembile kwemingcele yesifunda se-resonant.
Ukuguqulwa kwesigaba esingaqondile: i-amplitude ye-wave modulated ilungiswa kuqala, bese ukuguqulwa kwe-amplitude kuguqulwa kube yinguquko yesigaba. Le ndlela yasungulwa ngu-Armstrong ngo-1933 futhi ibizwa ngokuthi i-Armstrong modulation method.
i-pulse phase modulator: I-pulse phase modulator ishintsha isigaba sokuphumayo se-pulse phase modulator ngokusebenzisa okokufaka kwe-pulse okukhipha idivayisi yokulawula izinombolo. Uma idivayisi ye-CNC ikhipha ishayela lokuphakelayo eliya phambili noma elihlehlayo, okukhiphayo kwemoduli yesigaba sokushaya kuzothuthukiswa noma kubambezele isiginali yereferensi nge-Engeli yesigaba ehambisanayo. .
I-MCU ibona isiguquli sesigaba sedijithali: qalisa isibali ngokushaya kwewashi, engeza noma ukhiphe ukushaya kwenhliziyo okwengeziwe ukuze ushintshe isigaba sokuphuma kwekhawunta, ukuze ufeze uguquko lwesigaba. .
Isibonelo sohlelo lokusebenza lwe-modulator yesigaba
Isistimu yesikhathi se-valve eguquguqukayo: Imoduli yesigaba iyisici esiyinhloko sesistimu yesikhathi se-valve eguquguqukayo, ethuthukisa ukusebenza kwenjini ngokulawula isigaba sesikhathi se-valve. .
Idivayisi yesinxephezelo samandla asebenzayo: Ikhamera elungisayo iyisinxephezelo samandla esisebenzayo esisetshenziselwa ukugcina ibhalansi kagesi kusistimu yamandla. .
Iphutha lesilawuli sesigaba sezimoto libonakaliswa ikakhulukazi njengezimpawu zokwehluleka kwesilawuli se-automotive electronic, lezi zimpawu zihlanganisa:
Ukuwohloka kwe-voltage regulator : ukuwohloka kwe-FET noma i-Darlington transistor ngaphakathi kwesilawuli sikagesi, okubangela ukuba amandla e-excitation aphelelwe amandla, okubangele ukuthi i-voltage ye-generator inyuke, nebhethri lishajwe ngokweqile.
Ijeneretha yonakalisiwe : Uma ijeneretha ilimele, amandla kagesi aphumayo ayehla futhi nebhethri alikwazi ukushajwa.
effector noma ukulimala kwe-open-circuit tube yase-Darlington : Uma i-effector noma ithubhu lase-Darlington lilimaza i-open-circuit, i-generator excitation winding lead lead iba phansi.
Inkomba yebhethri ivuliwe uma ugesi ungekho : Inkomba yebhethri kungenzeka ivuliwe ngoba awekho ugesi ophehliswayo, noma kungenzeka kungenxa yokuphehlwa kwamandla aphezulu. Uma amandla kagesi ebhethri ehla ngaphansi kwama-volts ayi-10, injini iyanyakaza, kunzima ukuyiqalisa, noma ayikwazi ukusheshisa futhi ime.
Lezi zimpawu zikhomba inkinga ngogesi wemoto, okungaba nomthelela omubi ekusebenzeni kwemoto. Ngakho-ke, ukuxilongwa ngesikhathi kanye nokulungiswa kwalokhu kwehluleka kubaluleke kakhulu.
Ngaphezu kwalokho, izimpawu zephutha ze-alternator yemoto futhi zihlanganisa ukungashaji, amandla okushaja mancane kakhulu noma makhulu kakhulu, futhi lawa maphutha angase ahlobane nephutha lesilawuli. Isibonelo, ukwehluleka ukushaja kungase kubangelwe ibhande lejeneretha eliphukile, ulayini wokuvusa ijeneretha ophukile noma ulayini wokushaja, nokuthintana okungalungile phakathi kwebhulashi neringi yokushelela. Ukushaja kuncane kakhulu kungase kube ngenxa yokungathintani kahle kolayini wokushaja, ukushelela kwebhande lokushayela, ukwehluleka kwejeneretha noma i-voltage yokulawula isilawuli iphansi kakhulu. Amandla wokushaja makhulu kakhulu kungenzeka ngenxa yokuthi inani levoltheji yesilawuli liphezulu kakhulu.
Kafushane, izimpawu zokuhluleka kwemodulator yesigaba semoto zihlanganisa ukushajwa kwebhethri, ukwehluleka kwebhethri, ukukhanya kwenkomba yebhethri, njll., okungase kuthinte ukusebenza okuvamile kwemoto. Ngakho-ke, kuyadingeka ukuxilonga nokulungisa iphutha lemodulator yesigaba sezimoto ngesikhathi.
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