Ɇɟɯɚɧɢɤɚ
84
(
0
0
v ), ɤɨɝɞɚ ɢɡ ɧɟɝɨ ɜɵɬɟɱɟɬ ɜɟɫɶ ɢɦɟɸɳɢɣɫɹ ɝɚɡ. ȿɫɥɢ ɜ ɧɚɱɚɥɶɧɵɣ
ɦɨɦɟɧɬ ɜɪɟɦɟɧɢ ɦɚɫɫɚ ɝɚɡɚ ɜɧɭɬɪɢ ɬɟɥɚ ɛɵɥɚ ɪɚɜɧɚ
ɝ
m
, ɬɨ ɦɚɤɫɢɦɚɥɶɧɚɹ
ɫɤɨɪɨɫɬɶ
max
v
, ɤɨɬɨɪɭɸ ɫɦɨɠɟɬ ɪɚɡɜɢɬɶ ɬɟɥɨ ɩɪɢ ɪɟɚɤɬɢɜɧɨɦ ɞɜɢɠɟɧɢɢ,
ɪɚɜɧɚ
ɝ
mm
m
u
0
0
max
lnv
.
ɗɬɚ ɮɨɪɦɭɥɚ ɧɨɫɢɬ ɧɚɡɜɚɧɢɟ ɮɨɪɦɭɥɵ ɐɢɨɥɤɨɜɫɤɨɝɨ. ɂɡ ɮɨɪɦɭ-
ɥɵ ɐɢɨɥɤɨɜɫɤɨɝɨ ɥɟɝɤɨ ɫɞɟɥɚɬɶ ɜɵɜɨɞ, ɱɬɨ ɧɟɡɚɜɢɫɢɦɨ ɨɬ ɬɨɝɨ, ɩɨ ɤɚɤɨ-
ɦɭ ɡɚɤɨɧɭ ɭɦɟɧɶɲɚɟɬɫɹ ɦɚɫɫɚ ɝɚɡɚ, ɦɚɤɫɢɦɚɥɶɧɚɹ ɫɤɨɪɨɫɬɶ ɬɟɥɚ
max
v
ɛɭɞɟɬ ɨɞɢɧɚɤɨɜɨɣ.
1.2. ɋɤɨɪɨɫɬɶ ɢɫɬɟɱɟɧɢɹ ɝɚɡɚ
Ɋɚɫɫɦɨɬɪɢɦ, ɩɪɢ ɤɚɤɢɯ ɭɫɥɨɜɢɹɯ ɫɤɨɪɨɫɬɶ ɢɫɬɟɱɟɧɢɹ ɝɚɡɚ ɦɨɠɧɨ
ɫɱɢɬɚɬɶ ɩɨɫɬɨɹɧɧɨɣ.
ɉɭɫɬɶ ɨɬɞɟɥɹɸɳɟɟɫɹ ɨɬ ɬɟɥɚ
ɜɟɳɟɫɬɜɨ (ɝɚɡ) ɧɚɯɨɞɢɬɫɹ ɜ ɰɢɥɢɧ-
ɞɪɢɱɟɫɤɨɦ ɪɟɡɟɪɜɭɚɪɟ ɨɛɴɟɦɨɦ
V
ɫ ɩɥɨɳɚɞɶɸ ɩɨɩɟɪɟɱɧɨɝɨ ɫɟɱɟɧɢɹ
0
S , ɚ ɩɥɨɳɚɞɶ ɨɬɜɟɪɫɬɢɹ (ɫɨɩɥɚ),
ɱɟɪɟɡ ɤɨɬɨɪɨɟ ɝɚɡ ɜɵɬɟɤɚɟɬ ɢɡ ɪɟ-
ɡɟɪɜɭɚɪɚ, ɪɚɜɧɚ
S
(ɪɢɫ. 2). Ɍɟɦɩɟ-
ɪɚɬɭɪɚ ɝɚɡɚ
ɞɨɫɬɚɬɨɱɧɨ ɜɟɥɢɤɚ,
ɱɬɨɛɵ ɞɚɜɥɟɧɢɟ
p
ɢ ɩɥɨɬɧɨɫɬɶ
U
ɜɵɪɚɜɧɢɜɚɥɢɫɶ ɦɝɧɨɜɟɧɧɨ ɜɨ ɜɫɟɦ ɫɨɫɭɞɟ ɩɨɫɥɟ ɤɚɠɞɨɝɨ ɜɵɛɪɨɫɚ ɝɚɡɚ ɢ
ɫɬɚɧɨɜɢɥɢɫɶ ɨɞɢɧɚɤɨɜɵɦɢ ɜɨ ɜɫɟɦ ɪɟɡɟɪɜɭɚɪɟ. Ɍɨɝɞɚ ɩɪɢ ɜɵɬɟɤɚɧɢɢ ɝɚ-
ɡɚ ɬɟɱɟɧɢɟ ɫɭɳɟɫɬɜɭɟɬ ɬɨɥɶɤɨ ɜ ɧɟɛɨɥɶɲɨɦ ɫɥɨɟ ɜɛɥɢɡɢ ɫɨɩɥɚ (ɬɨɥɳɢ-
ɧɨɣ G). Ȼɭɞɟɦ ɫɱɢɬɚɬɶ, ɱɬɨ ɥɢɧɢɢ ɬɨɤɚ ɧɟɩɪɟɪɵɜɧɵ. ɋɥɟɞɨɜɚɬɟɥɶɧɨ,
ɩɥɨɬɧɨɫɬɶ ɝɚɡɚ, ɩɪɨɯɨɞɹɳɟɝɨ ɱɟɪɟɡ ɫɨɩɥɨ, ɢ ɩɥɨɬɧɨɫɬɶ ɝɚɡɚ ɧɚ ɪɚɫɫɬɨɹ-
ɧɢɢ G
ɨɬ ɫɨɩɥɚ ɦɨɠɧɨ ɫɱɢɬɚɬɶ ɨɞɢɧɚɤɨɜɨɣ. Ɍɨɝɞɚ ɞɥɹ ɬɟɱɟɧɢɹ ɜ ɫɥɨɟ
ɬɨɥɳɢɧɨɣ G ɦɨɠɧɨ ɡɚɩɢɫɚɬɶ ɭɪɚɜɧɟɧɢɟ ɧɟɪɚɡɪɵɜɧɨɫɬɢ:
00
uSSu U U
ɢɥɢ
00
uSSu
,
ɝɞɟ
u
– ɫɤɨɪɨɫɬɶ ɬɟɱɟɧɢɹ ɱɟɪɟɡ ɫɨɩɥɨ, ɚ
0
u
– ɫɤɨɪɨɫɬɶ ɬɟɱɟɧɢɹ ɜ G-ɫɥɨɟ
ɜɛɥɢɡɢ ɫɨɩɥɚ.
ȿɫɥɢ ɪɟɚɤɬɢɜɧɨɟ ɞɜɢɠɟɧɢɟ ɫɨɜɟɪɲɚɟɬɫɹ ɜ ɝɨɪɢɡɨɧɬɚɥɶɧɨɦ ɧɚ-
ɩɪɚɜɥɟɧɢɢ, ɬɨ ɨɛɚ ɫɟɱɟɧɢɹ
S
ɢ
0
S ɧɚɯɨɞɹɬɫɹ ɧɚ ɨɞɢɧɚɤɨɜɨɣ ɜɵɫɨɬɟ
h
ɨɬ
S
p
p
0
= 0
u
S
0
G
u
0
Ɋɢɫ. 2