O‘zgarmas tok dvigatellarining kuchlanish (13-4) va elektr yurituvchi kuch (13-6) tenglamalarini birgalikda yechib o‘zgarmas tok dvigatellarining n=f(Ia) tezlik va mexanik n=f(M) tavsifining tenglamasini yozishimiz mumkin (55-rasm)
n = (13-8)
O‘zgarmas tok mashinasining moment tenglamasi
M=Cm F Ia (13-9)
(13-9) dan Ia ni ajratib (13-8) ga qo‘yib, o‘zgarmas tok dvigatellarining mexanik tavsifining n=f(M) tenglamasini olishimiz mumkin.
(13-10)
(13-10) tenglama o‘zgarmas tok dvigatellarining aylanish tezligini yakorda xosil qilingan momentga boliqligini aniqlaydi. O‘zgarmas tok dvigatellarini mexanik tavsiflarining (55-rasm) U=const da ko‘rinishi, valdagi moment M o‘zgarganda magnit oqimi F ning o‘zgarishiga boliq.
Nazorat uchun savollar.
1. UTD larning ulanish sxemalarini tushuntirib bering?
2. Moment tenglamasi deb nimaga aytiladi?
3. Kuchlanish va tok tenglamalarini keltirib chikaring?
4. UTD larni kuzgotish sistemasiga asosan turlari
5. UTD ni valida momentlarni aytib bering
6. Dinamik moment kachon xosil buladi?
7. UTD kuchlanish tenglamasini generatorning tenglamasidan farki-
ni aytib bering?
8. Tezlik formulasini yezib bering
9. UTD ni mexanik xarakteristikasini chizib bering?
10. Uzgarmas tok generatorini dvigatel rejimida ishlatish mumkinmi?
Reja:
O‘zgarmas tok dvigatellarini ishga kiritish.
O‘zgarmas tok dvigatellarini tezligini rostlash.
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