:
: .
1. 1, 2 3. . 4 (. 2): 5 (m=630), 6 m=217). () (THt1 THt2). (TVl1 TVl2). ( ENABLE), (TAir) 2 , , 1. , , 2. (. 3).
1 2. ↕ ( 50 80 ). ↕ ( 60% 100%). . . 1 10 . 1/10 ► ◄1/10. , . . , .
3 4 , , . 4 , . .
:
V: 2 P = 1. 0 T m a x = 8 0 C |
T h t 2 = + 4 0. 7 T v l 2 = + 4 1. 6 T a i r 2 = + 2 5. 4 |
V: 2 -
P = 1. 0 - %
T m a x = 8 0 C -
T h t 2 = + 4 0. 7 -
T v l 2 = + 4 1. 6 -
T a i r 2 = + 2 5. 4 -
2 . .
|
|
. , . , , .
Ρ = I (U αI) α = 0,33 (1)
I U , 3.
. , , ,
. (2)
, , 1 K.
, . , .
. (3)
, ( ), :
Ps = a0(t t0), (4)
a0 . C, t0, P. dt:
Pdt = Cdt + a0(t t0)dt, (5)
:
. (6)
, .. a0 = 0, (5) ,
. (7)
, t01 t02 (t01 > t02).
C1, C2 . dt :
a(t1 t2)dt = -Cdt1, (8)
a(t1 t2)dt = cmdt2, (9)
a , C , c m , t1 t2 . (8) (9)
(C +cm)a(t1 t2)dt = -cmCd(t1 t2), (10)
, (11)
(12)
, , . (11)
. (13)
, (14)
, (15)
tr , .
. m , . . , .
, , . , , , . (6).
|
|
t = a0 + a1t + a2t2. (16)
(6) ,
. (17)
(17) (16), :
(18)
(19)
t t ( , ), a0, a1, a2.
a0, a1, a2 . ti ti, i = 1, 2, N. a0, a1, a2 ,
(20)
.
, (21)
, (22)
. (23)
:
, , , , , ,
, , . (24)
ti = a0 + a1ti + a2 zi, (25)
(21 23)
a0 + <t>a1 + <z>a2 = <t>, (26)
N<t>a0 + S2a1 + T1a2 = S1, (27)
S2a0 + T1a1 + T2a2 = V1. (28)
a0, a1, a2.
() . . , ( (8) (9)):
cmDt2 = -CDt1, (29)
Dt1 Dt2 .
. (30)
(13) , (12) a:
(31)
1. .
2. ENABLE, л 2.
3. , Ļ.
4. .
5. , , .
6. 2 2 5 1.
7. , > < (. 3), , .
8. a0, a1, a2 (16) ( (26) (28) t (t)). (18) (19) , (30) , (13) (31) .
1. .
2. .
3. ?
4. ?
5. ?
1. .. . .: . ., 1987. 360 .
2. .. . .: , 1990. 592 .