u(t)=Ucosωt. , , (, , ).
() .
uΩ(t)= UΩcosΩt (7.1)
, ω >> Ω.
(7.1)
u(t)=U(1+mcosΩt)cosωt (7.2)
m
(7.3)
k .
(7.2), - 7.1.
7.1
m+ - ; m-- . , , . , m+ m-.
(7.2)
u(t)= U cosωt + U mcosΩtcosωt =
= U cosωt+ (7.4)
(7.4) - ( !). , (7.4) 7.1. , - . (, , ..), , , ( 7.1).
(7.2) U=U(1+m). ,
(7.5)
, ,
(7.6)
m = 1, P1 = 41; 1 = 1,51.
. () (U,). 7.2 , .
7.2
() m . . 7.2.
|
|
- (), F m = 0,5 0,9. 7.3 m .
7.3 -
(Fo), , 400 1000 . [].
. , , , , , . (, ) , ()