. . - - . , AF, 9 = 2nAFT. , , . . - . .
15
15.1.
(AM) (, ) , , , . , (t) : , . , .
-. - / /: =- Afr!2AFx- , AM = 1, AM = = 1 /2. < 1 , > 1 , - -.
, , .
. : , ; , ; .
(t) (tK) . (), (). , (kj,k2,....... ; tlt < tn). , () . , ().
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, (/) . ajj Sx () Rx ().
,
; Q, .
{ == //4; \ (/).
(15.1) , (t) /?- (. 15.1) (\IQ m)u\ (/), 1/Qm = RC .
, ( ) (15.1), , (t) .
, , , 11.3.
, (t) .
u-z(t) ,-- - \t, ,\, kt () (/,,, (t):
(15.2)
(t) , (t) . , (t) a (t, kt) (, kt), (11.46). (t) (11.45).
< ()> = 0 -
<m(*l) " &) > = -5 ^ Vl h).
, (/) s (t) , . . .
(. 11.3), w(t, kt), , (t) (0; 7"), (11.47):
, ~ (15.3) a (t, kt) =
b(t, kt)~0
(15.4)
(15.3) (11.45), -
(/). , = (15.4).
(. 11.3) W (t, kt) kt, (15.3). / (t, kt) = d/dtlnF (kt) (11.43).
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(15.5)
();
(, ).
(11.48).
/ :
(11.50) :
(15.8)
(15.9)
, [30].
(15.8) , -, - -.
: , .
15.2. - ^'
, .
, - (15.2). (/) 2(0-
-:
(15.10)
0, ,\, , , AM,
, ; (/) , ,
(15.11)
u\{t) < \ (t)> = = , < uh ({,) Us) > = 0,5 Nk it., /,); / .
, , , (t).
(15.8). (15.11)
(15.12)
, / (/, ,) (15.5), 2 :
(15.13)
(15.12) (15.14) (15.8),
X cos(w0f + <p) 0(1 + ,)].
, :
(15.9):
1 RC /^ k(t).
(15.15) () , . 15.2. , (), (). () -
(), () ( ), () 2cos (< + 0), 0 (15.10). ,
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(1 + m\kt), / /?- .
kt. RC- , - .
, , . ip0 . ,
(t) . (15.10) 0 = (t). , . , . , . , : (t) (t).
(15.8) .
(15.16)
, . < < , (() 0.
(15.17)
| -
(t). , () (t) , - .
dl (, kt)! dkt (15.14), 0 == < (/). (15.13).
(15.14) (15.16) (15.18) (15.17),
,
- (. 15.3). (15.19) , (. . 15.2)- , . 15.3 ( ) . (15.20). (. 10.4).
us (t) (), . ,
. , , (t), . .
, -
˄ (1 + mAXt). N. N0 , .
, - : 0, '
AM , . - (15.10), 1 . , (15.13), -
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(1 -f ^<)> 1 == 0. (15.19), (15.20) . AM . 15.3 : 0, -
X,.
-, (. 15.4). (), . -
- , , , . , (), , .
, (. 7.2) , (, 7.4). , . () , , .
(. . 15.2) () -
(15.10); % X (/); jV0 , ,,; *. .
, 1.
,
(15.23)
, . (15.23) ().
, < () , ((. ) cos'2 ((. ) 2.
/
(15.24)
^ (15.24) (15.21), ,
. . / . .
(. . 15.4) - (15.21). (\ = /\),
(/)=1 "(/. ,)+"(/)12.
() = 40 0 + ££)2/4.
/
qbMX (15.25) (15.27) , : (</1)/ %) 2 (i /qax + 1), , £/ > 1 , qBX <^ 1. , () -
/ , .
15.3. -
- ( ) .
. - Q 2nF:
(15.28)
(/) () [ / ()|, (), () - () () .
0 (,, = ), - (. 15.5)
(15.29)
() = ()// , 0.
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(15.29) , (to) (w).
(15.29) , £1 0 ( Q) mA/2 = (w0 Q), (15.28). - Q, .
, .
- (0 ), . 15.6. , , . . . - (. 15.7), , - , (15.28). , (). , Q . .
(15.32) , . 2, . (15.31) , nil.
(,,) <, . . (0 = .
- - , , , , (. 1.3).
- . , .
- |
)2, - = 1 mtonx2, , = , 1, 2,... (, , .