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系統動力學軟體vensim學習之一階負回報

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此時GL值為100,LEV狀态1初始值為10,具體實作編碼,及仿真結果如下。

(01) CONST比例常數=

0.1

Units: **undefined**

(02) DISC偏差3=

GL-LEV狀态1

Units: **undefined**

(03) FINAL TIME = 100

Units: Month

The final time for the simulation.

(04) GL=

100

Units: **undefined**

(05) INITIAL TIME = 0

Units: Month

The initial time for the simulation.

(06) LEV狀态1= INTEG (

RT速率2,

10)

Units: **undefined**

(07) RT速率2=

CONST比例常數*DISC偏差3

Units: **undefined**

(08) SAVEPER =

TIME STEP

Units: Month [0,?]

The frequency with which output is stored.

(09) TIME STEP = 1

Units: Month [0,?]

The time step for the simulation.

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對應Gl(目标值為0),LEV狀态1初始值為100,對應編碼及仿真結果如下:

(01) CONST比例常數=

0.1

Units: **undefined**

(02) DISC偏差3=

GL-LEV狀态1

Units: **undefined**

(03) FINAL TIME = 40

Units: Month

The final time for the simulation.

(04) GL=

Units: **undefined**

(05) INITIAL TIME = 0

Units: Month

The initial time for the simulation.

(06) LEV狀态1= INTEG (

RT速率2,

100)

Units: **undefined**

(07) RT速率2=

CONST比例常數*DISC偏差3

Units: **undefined**

(08) SAVEPER =

TIME STEP

Units: Month [0,?]

The frequency with which output is stored.

(09) TIME STEP = 1

Units: Month [0,?]

The time step for the simulation.