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[求助] 本人初学auto mod,有一道题目希望大家赐教

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发表于 2009-10-3 15:08:34 | 显示全部楼层 |阅读模式
刚刚开始学auto mod,这道题目搞不明白,希望大家看看 题目是这样的,
7 @" e* o* W1 g/ a  Create a new model containing three independent processes, each with one operator. In each process, loads first move into an infinite capacity waiting queue, then into a single-capacity processing queue.
! ?7 a2 b. t8 y4 |  Loads are processed by each operator for the following time:! @, L( ]& Y7 R0 ~8 f8 x% x
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
( d/ H+ s3 O: C) H  Worker_B does the job according to a triangular distribution with a min of 30 mins, most likely value of 60 mins, and a max of 90 mins.
. K; l0 }: t+ T+ ]( T% D6 H  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., g9 h/ G/ D2 B2 `( _6 }
Send loads to each pocess at the same rate (an exponentially distributed inter-arrival time with a mean of 68 mins) to understand the difference in the processing times of the three workers.
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问题:4 a2 `! W' e1 P5 v
After running the model for 10,000 days, what was the average number of loads in each process?' ~: m; [5 j2 l& N
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 u. p. [0 f: u; L2 P- G$ f( C4 `
move into Q_wait /*Capacity is infinte*/: u" }5 A6 Y7 K" |
move into Q_process /*Single capacity*/+ E3 \7 @+ D2 C5 g) H$ X" \

  z; p) a/ U# F2 luse R_A for n 60,10 min /*Resource A*/
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send to P_B, U  K: t6 H% O7 W8 N( b
end. e1 w5 |' R  l6 F1 C, R. k: ~) \

3 m" Z7 J, w8 F- t5 e) ^" X' C7 d( PP_B and P_C is similar
% k4 N" ^& X8 @" ]* wtriangular 30,60,90 min  F! M$ J2 ~; m3 z2 c
u 60,30 min4 |/ m) i5 P5 F

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in P_C, you need to send to die.4 F! H# x0 R0 w8 g, z- m

5 i, ]/ W* v! X$ F3 {1 A2 PThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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Remember to turn off the animation before you run your model.

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 楼主| 发表于 2009-10-27 23:53:02 | 显示全部楼层
thanks...
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