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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,
% Y8 k# m- ]1 }; b/ r! q; f  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.  A9 E  N; m2 X, I- X# F9 K
  Loads are processed by each operator for the following time:! a; ]4 c. a- m- v2 S. N
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
! E% ~" Z% x7 k" I" 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.
$ v& f  G2 \1 n9 F% V! m3 u! _  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: S: X' [6 s+ `
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.& L( Y/ x8 d8 w8 O

; s% J+ W* B% Y* [7 v问题:
4 a! N7 M, f1 W& m1 dAfter running the model for 10,000 days, what was the average number of loads in each process?* g; h# G6 W( l8 M
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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 arriving& _) v* j5 C, D7 s; M" N0 ?0 Y
move into Q_wait /*Capacity is infinte*/7 R/ r. p+ a) r9 e8 u- A
move into Q_process /*Single capacity*/* s. |' ^" q  Q, v
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use R_A for n 60,10 min /*Resource A*/
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send to P_B9 O0 F+ e  ?; u+ v
end3 {6 i& m7 W9 p# w9 |$ R2 i
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P_B and P_C is similar
5 [/ l3 ^  f- V) a' @9 X0 n- ptriangular 30,60,90 min7 A" W  q# m( A" q  M7 `
u 60,30 min
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1 h+ m$ h5 x0 ]" a: e" Hin P_C, you need to send to die." S0 p/ }) u+ x' X3 S. C0 o* f

; s* t3 ?) Y$ Q2 _$ |3 lThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days., ~7 b- \7 J0 |* D% d) ~$ l* F) ~
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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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