1. -
. 2.1. -
:
1. e(t) - f
2. R1 - .
3. R - .
4. - D, d, h.
5. () B (. 2.2).
6. W1, W2 - , .
.
i1(t), U(t), (t) H(t) .
EΘ, ΘS.
2.1 | |||||||||||
f | R1 | R | W1 | W2 | Br | D | d | h | |||
. | / | ||||||||||
2,5 | 0,3 |
2.2. .
, :
R=Rw12/w22=100502/502=100 () (2-1)
, . 2.3 , , , UW1.
:
E=i1R1+Uw1 (2-2)
:
i1= i+ i (2-3)
i (, );
l :
l=(D+d)/2π =(10+5)/2π=23,56 ()
i=Hcl/w1=7523,5610-3/50=35,3410-3=35,34 () (2-4)
i=Uw1/R (2-5)
. 2.3.
, :
Uw1=[E-iR1]/[1+R1/R]=(3-35,3410-340)/(1+40/100)=(3-1,414)/1,4=1,133 () (2-6)
i'=1,133/100=11,33 ()
i1=11,33+35,34=46,67 ()
:
Uw2=U=Uw1w2/w1=1,13350/50=1,133 () (2-7)
(UW1 UW2) B(t) (= -r) (= +r).
S :
S=(D-d)/2h=(10-5)/21=2,5 (2)
, ts,
ts=2BrSw1/Uw1=20,32,550/1,133=66,20 (2-8)
ts>T/2=1/(2f)=1/(2f)=200 (2-9)
, , Δ<2r:
|
|
ΔB=Uw1/[2fSw1]=1,133/[22,51032,510-650]=1,813 (2-10)
(ts<T/2), (ts-/2), (=r) , , dB/dt=0.
Is=E/R1=3/40=75 () (2-11)
, ,
Hs=Isw1/l=7550/23,56=159,17 (/) (2-12)
ΘS
ΘS=πts/(T/2)=ts2π/T=ts2πf=66,2010-62π2,5103=1,04 ()≈59,8 (2-13)
( ) , . ES, Θs .
tS (2-13)
ts=Θs/[2πf]=1,04/(2π2,5103)=66,21 () (2-14)
w1, (2-8)
Uw1=2BrSw/ts=Uw2=U=20,32,550/66,21=1,133 () (2-15)
(2-6)
E=Uw1[1+R1/R]+iR1=1,133(1+40/100)+35,3410-340=1,5862+1,4136=3 () (2-16)
, . . , , .
:
2.2 | ||||||
- | l, | S, 2 | R', | /2, | I, | ts, |
23,56 | 2,5 | 35,34 | 66,20 |
2.3 | ||
t≤ts | ||
Uw1,B | I1,A | U,B |
1,133 | 46,67 | 1,133 |
2.4 | ||
t>ts | ||
Uw1,B | I1,A | U,B |
1,133 |
1. ? , ?
2. . ( )?
3. . ?
4. ( ), ?
5. () , .
6. , .
2.
. .1.
e(t) - ( : E t);
R - ;
|
|
- : - D,d,h; -W; - r; - .
:
1. B(t), H(t), i(t) , . 3.2, () -Br. , Br c. 3.1. ( 3.1) 3.2.
2. .
3. i(t) e(t) U(t).
4. - .
. 3.2.
3.1 | |||||
. | |||||
tu | R | W | . | ||
0,5 |
3.2 | |||||
. | |||||
D | d | h | Br | Hc / | |
1,3 | 0,185 |
1 ( , . 3.2,) , , i(t)
l :
l=(D+d)/2π =(3+2)/2π=7,854 ()
i(t)=I=Hcl/W=307,85410-3/4=58,91 () (3-1)
R -, c
( : Uw=Wd/dt)
E=i1(t)R+Uw=IR+WSdB(t)/dt (3-2)
. , (3-2),
S :
S=(D-d)/2h=(3-2)/21,3=0,65 (2)
dB(t)/dt=(E-IR)/(WS)=[4-58,9110-320]/[40,6510-6]=(4-1,1782)/(1,538410-6)=
=1,085 (/)=const (3-3)
, Δ Δt, ,
ΔB/Δt=(E-IR)/(WS) (3-4)
-r +r ts1
2Br/ts1=(E-IR)/(WS) (3-5)
1
ts1=(2BrSW)/(E-IR)=20,1850,6510-64/[4-58,9110-320]=0,338 () (3-6)
ts1< tu, (ts1 - tu) (+r), i1=I1=E/R=4/20=200 ()
H=I1W/l=20010-34/(7,85410-3)=101,86 (/) (3-7)
ts1> tu, (3-4) Δ .
2 ( ()- . 3.2,6) :
L=0W2S/l=0,0061667420,6510-6/(7,85410-3)=8,166 () (3-8)
0=Br/Hc=0,185/30=0,0061667 (/) - .
S l - , .
i2
i2(t)=E/R[1-exp(-t/τ)] (3-9)
τ=L/R=8,16610-6/20=0,408 () - .
|
|
B2=-Br+0H2(t) (3-10)
H2(t)=i2(t)W/l (3-10)
ts2, +r, , =2c (. . 3-2,6).
1.
B2=-Br+0i2(t)W/l → i2(t)=(B2+Br)l/[0W] → E/R[1-exp(-t/τ)]=(B2+Br)l/[0W]
E/R[1-exp(-ts2/τ)]=2Brl/[0W] →
4/20[1-exp(-2,451106ts2)]=20,1857,85410-3/[0,00616674]
0,2-0,2exp(-2,451106ts2)=0,1178
exp(-2,451106ts2)=0,411
-2,451106ts2=-0,889
ts2=0,363
:
3.3 | ||
l, | S, 2 | dB(t)/dt, / |
7,854 | 0,65 | 1,085 |
3.3.1 | |||
i(t<ts1)=I, | ts1, | i1(t>ts1)=I1, | H(t>ts1), / |
58,91 | 0,338 | 101,86 |
3.3.2 | |||
L, | 0, / | τ, | ts2, |
8,166 | 0,0061667 | 0,408 | 0,363 |
1. ?
2. - ()?
3. R-L (.3.2, ) R.
4. (1- ()) .
5. (2- ()) .
3.
1. - ;
2. - ;
3. -, ;
4. - δ;
5. - 0,2δ;
(a,b,c,e,f), , 1 -2, d δ 4.1.
4.1 | ||||||||||
1 | 2 | P | dp | δ | ||||||
f | ||||||||||
0,2 | 0,5 |
. , .
1. w, .
2. ( ) ( ) .