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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,! |- W- F& e* f" ~+ m1 u) O' h
  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.
# y" u9 e" N- Y  d; t5 l  Loads are processed by each operator for the following time:
. K4 A0 m1 V* `( m  G  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 l) T' ?' b) j0 D3 c) d7 h7 ]4 F
  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., C3 w) B' _2 @* A- k
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" Y# J) y  M$ Q/ w, NSend 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.& a2 e3 X3 ^- R. {  G, G8 z& J  T0 [

. n8 b5 ?& N$ ?# ]8 v5 O) U& Y/ G# ?问题:: _; M; [8 S. U8 Q) s) i' b
After running the model for 10,000 days, what was the average number of loads in each process?
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6 b, |; {) w3 f9 @- U5 v2 n不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  p" q) q3 `/ R) p9 e. v2 W- L
move into Q_wait /*Capacity is infinte*/
/ r& j+ g6 q( U2 Umove into Q_process /*Single capacity*/7 `/ C6 w- j$ J, @
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use R_A for n 60,10 min /*Resource A*/+ m1 a2 n& b' ^9 P* ~
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send to P_B
8 B  F" [9 V* Y) p, kend
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- P; K5 S/ Q( B6 v" L8 {6 nP_B and P_C is similar
2 ?/ b. R  S3 u; j% Ctriangular 30,60,90 min$ H% T& W! r+ w* t% z
u 60,30 min6 m; d5 R# {+ d& Z  {
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in P_C, you need to send to die.
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.$ E$ d; X) I5 [; o% y$ t/ R7 G
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2 Z1 P5 j; c  M) ~$ b5 uRemember 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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