7, .
u(t)=Ucos(ωt+φ)= Ucos(t) (9.1)
, , , ω φ, , , (, ). (9.1) (t), . , , .
(7.1).
u(t)=Ucos[(ω+ΔωcosΩt)t+φ] (9.2)
Δω , ; φ , t = 0. (7.1) (9.1)
Δω=UΩ (9.3)
- .
u(t)=Ucos(ωt+ΨcosΩt+φο) (9.4)
Ψ , . (9.3)
Ψ=UΩ (9.5)
- .
(9.6)
(9.7)
.
(t) (9.4) (9.6),
(9.8)
(9.2) (9.8), (9.5),
Δω() = ΨΩ = ΩUΩ (9.9)
, , (9.3). , , , ( - ).
(9.2) (9.7) .
(9.10)
(9.4) (9.10), (9.3),
(9.11)
, , (9.5). , , , .
Ω. (7.1) , .
(9.9) (9.11) , ( ) .
|
|
, , . RC , (. 9.1).
9.1
,
. R>>Ω
(9.12)
(. 9.1).