F。=-·Bks6= 4×10>×0.75×1252×000=632841对极) (2)齿部所需磁势: 2×0035 r(D-2.-)x(0.368-2 0.0288(m) b==ta-b,=00288-00127=0061m 铁心净长1=l:k=0.93×023=02139m ,B,t.L10.77×0330×023 B= 1.708T b=l00161×02139 查表得H 7000A/n F=2H3h2=2×700035=490/对极) 0.0361 (3)电松所需的势:B.=2A.-2×0065 10906T 查得H。=400Am F=H。ln=400×0.16=64(4/对极) (4)主极铁心磁势:=k=12×00561043韦 p00433 B =1.3667 An00317 查得:Hn=12004/m Fn=2Hnln=2×1200×01295=3108(4/对极) 0.0433 (5)磁轭磁势:B.= =1.046T A2An2×00207 查得:H=904m F,=Hl,=900×0.53=477/对极)0.775 1.252 0.003 4632.（8 /对极） 4 2 2 10 F 7 0 B k    = A  =    = −       （2） 齿部所需磁势： 0.0288(m) 35 ) 3 2 0.035 ) (0.368 2 3 2 ( 2 t 3 1 =  −  = −  =   Z z h D s a z z b m s 0.0288 0.0127 0.0161 b t 3 3 1 ＝ 1 − = − = 铁心净长 l k m Fe ta Fe 0.93 0.23 0.2139 l =  =  = T z z z l B t l l Fe z i Fe t 1.708 0.0161 0.2139 0.775 0.0330 0.23 b b B 3 3 3 1 1 1 =    =  =  =   查表得 A m H z 7000 / / 3 1 = 2 2 7000 0.035 490( / ) / 3 1 A 对极 Fz Hz hz =  =   = （3） 电枢轭所需的磁势： Ba ＝ T Aa 1.0906 2 0.01655 0.0361 2 0 =  =  查得 H a ＝400A/m 400 0.16 64(A/对极) Fa Ha la =  =  = （4） 主极铁心磁势： 1.2 0.0361 0.0433韦 m 0  =  =  = k Bm ＝ T Am m 1.366 0.0317 0.0433 = =  查得： H A m m = 1200 / 2 2 1200 0.1295 310.8(A/对极) F m Hm lm =  =   = （5） 磁轭磁势： Bj ＝ T A Am m j j 1.046 2 0.0207 0.0433 2 =  = =   查得： H A m j = 900 / 900 0.53 477(A/对极) F j H j lj =  =  =