系统动力学软件vensim之指数增长

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(1) CONST常数=

3

Units: **undefined**

(2) FINAL TIME = 1

Units: Month

The final time for the simulation.

(3) INITIAL TIME = 0

Units: Month

The initial time for the simulation.

(4) LEV状态1= INTEG (

RT速率2,

10)

Units: **undefined**

(5) RT速率2=

CONST常数*LEV状态1

Units: **undefined**

(6) SAVEPER =

TIME STEP

Units: Month [0,?]

The frequency with which output is stored.

(7) TIME STEP = 0.03125

Units: Month [0,?]

The time step for the simulation.

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指数增长模式

注意:

1.时间常数:为CONST的倒数。

经过一个时间常数后,值为初始值2.73倍。

2.倍增时间:为时间常数的69%

经过倍增时间后,值为初始值两倍。

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