may eNg
2 3
"I
6 7
b)
Hi"h 8-40. So d6 may can nguOi ]i{'n lI,lc (a) va quay thu",n nghjch (b) Yeu cau chung cha
cac may CNg (lien t\lC va quay thu<:\n ngh!ch) lil :
- duy tri suc cang
I - Truc Ihim . 2 - H~p can : 3 - Thiel bj do chi&! day : 4 - ThIel bj kco c;'ing ; 5 - Thl6 bi do siic c;'ing : 6 - Thi6 bj cp levc : 7 - Tn,lc qu!l:n. kco c;'ing ; 5 - Thl6 bi do siic c;'ing : 6 - Thi6 bj cp levc : 7 - Tn,lc qu!l:n. co d~nh cua bang tbep giua cac hOp can, giua hOp
a m9i che d¢ lam vi~c (6n dinh va qua d¢),
can voi tr\lc thaa ha(\c tt"\lC qul1n
- ph~m vi dieu ehinh toe d(l tU'elng doi r(lng : 10/1 ha(\c hCJn, cd the dieu ehlnh dong thOi ha$c rieng re cac hOp can, ham va mo may em,
- thai gian qua trlnh qua dO ng!n, - lam vi~c tin c~y, chfnh xac.
D6i voi may CNg lien t\lC Me dO caa cOn yeu eau dieu chinh treln trong m¢t dai rOng (50 + 100) : 1 tu toc dO bO (0,5m/s + 1m/s) d~n t6c d¢ lam vi~c cvc d~i (han 100m/s). May can thuan nghich can dieu chinh t6c dO trong ph~m vi 1mls + 15m/s.
D¢ng ea t,uy~n d¢ng may can lien t\lC th11ang lil d¢ng Cd m¢t chieu kieh tu d¢c I~p. Dillu eMnh tu thong trang dM (2 + 3) : 1 (d6i vdi may lien tl,lc) va (3 + 4) : 1 (d6i voi may quay thu!;\n nghjch).
Cac M truyen d¢ng cd the la F-D, CL - D va T - D. H~ thong dip di~n cha d¢ng cel cd the Ia chung (hlnh 8-41a), chung cd may phat ph\l (hinh 8-41b) ha~c rieng cha tung d¢ng ca (hlnh 8-41c) hay cha m¢t nh6m dOng cel (hlnh 8-41d).
PhU'ang phap cap di~n chung tuy ell dl,lng it may phat nhU'ng cd nh11<;lc diem la khd thay ddi di(!n tip eha tung dOng ca nlln kh6 6n djnh suc ea.ng. Da v~y chi dung a may can cong suat nM, t6c d¢ thAp, na.ng suat thl1p.
PhU'ang phap cAp di(!n chung cd may phat ph1,l. (may phat di~n ap thAp nhung dong Ion tUelng ung voi dOng Cel) th11bng dung a may can luy~n clin t6c d¢ caa nhung na.ng suat thap.
a) L b) L t c:::- o _f~tK ~Kf IX F 18 Z£! _ 0 0 JD C) d) -~ -- j
Hi,.,. 8-41. Ciie phuong philp cap di~n cho ll(mg C{l.
Phudng phap dip ri£!ng d~ thay d6'i di~n ap phan ung dOng Cd, rna r(lng dllc;'lC ph~m vi di~u chlnh t6c d¢ dOc l~p, tac dOng nhanh, duy tri cae t6c dO chtnh xlic nhllng 86 thi~t bj Ion.