: 2- 3- .
, . , .
, :
1) pi (pi < 0);
2) pi,i+1 = α +_ jβ.
, , , .
, , 1, . 3.
. 3
W :
, W (p) .
,
W (p) = .
W = . (4)
(4) W :
W = , (5)
.
(5) , :
W = , (6)
ξ = , ( ξ < 1 , ξ ≥ 1 ).
, (6) :
. (7)
ξ 2, , . (7) , 0 ≤ ξ < 1 , , h (t) ; ξ ≥ 1 , , , :
. (8)
, , , .
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. ( ).
, , W (jω) (- 1; j0).
W (): W () = W () / [1 + W ()],
W () = .
jω :
W (jω) = =
= .
. 4 W (jω) = 1, . , (-1, j0), , , .
. 4. = 1,
W (jω) , , (-1, j0), . 5., = 15. , , 15, , .
. 5 = 15,
, , .
() L (ω) = 20 lg [ H (ω)] . lg (ω), L (ω) . , , L (ω) = 20 , 10 .
φ (ω) lg (ω). , φ (ω) .
, 10 . (ω = 1) lg (1) = 0.
. , φ (ω) = - 180 : L (ω) = 20 lg [ H (ω)] < 0. , ω , L (ω ) = 20lg[ H (ω )] = 0, φ(ω ) > - 180o.
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, .. . h (ω) ψ(ω ).
h(ω) , , ω , φ(ω) = - 180: h (ω ) = - L (ω ), . 6.
. 6
ψ(ω ) ω , : ψ(ω ) = φ(ω ) + 180 , ω , .
2
1. , , . 7., . 2 ( ) , .
2
. 7
2. W (p), . 3.
3
k | |||||
- | - | - | - | - |
3. , , . 4.
4
- k | k 1 = 1 + 2 | k 2 = k 1 + 10 | k 3 = k 1 + 5 | k 4 = 0,5∙ k 1 |
- | 1 = 0,05∙ 1 | 2 = 0,01∙ 1 | 3 = 0,05∙ 2 | 4 = 0,01∙ 2 |
: 1) 1, 2 ( 1 1 , , 10);
2) , ;
3) - , 2 . 4 , 1 0,2 .
4. .
5. .
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