:
Ø : , , , ;
Ø , ;
Ø ;
Ø .
1. , - .
2. , - ( ), - (, ) - () .
3. .
( ) ,
(1)
(T 22 s 2 + T 1 s + 1)z (t) = K(t)
(2)
; 1, 2 .
( ):
, (3)
; , x - ( b).
, , 1, 2 x . s :
1) (2) (3) ;
2) (3) 2 (2);
3) 1 (2) (3)
.
s:
(4)
(2) (4) , . :
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(2).
(1):
(5)
l1 l2, (2)
T 22 s 2 + T 1 s + 1 = 0
:
(6)
:
t = 0 h(t) = 0; dh/dt = 0. :
1 + 2 = 0, (7)
l 1 1 + l 2 2 = 0.
(7) .
,
(8)
1, 2 l1, l 2 . 1, 2.
( ):
(2) (3) , x, (3) d 0, .. d 0 = x.
d 0
d 0 > 1, .. ( 1 > 2T 2 ), :
.
d 0 < 1, .. ( 1 < 2 2 ) .
(7)
() ( b). , d 0 1.
d 0 = 0 (T 1 = 0, T 2 >0) . .
h(t) = K(1 - cosw 0 t) (8)
(9)
, U(w), V(w) w d0 , . 1.
R, L ; ; ; . .
R, L, C (.2).
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U = const, ( )
(10)
,
(10)
(11)
, U , U c, (11)
(LCs 2 + RCs + 1)U c = U .
;
T 1 = RC , ;
, .
, ( R), T 2 () .
R = 0 ( ), ( 1 = 0), .