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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,3 b. S! w* c' \: r; `2 b* }1 \
  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.& M; q, g) y6 r! l
  Loads are processed by each operator for the following time:8 i4 ]$ _! x. f. X* Y% j
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 o7 x1 \* }9 K4 m7 {  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.9 s; p9 H+ D  G& X% y* F9 j- e
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 I4 w$ s3 I5 ~  h  _( Y, h
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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* h# N- t- p3 S问题:
: I' G9 y1 A8 ~# DAfter running the model for 10,000 days, what was the average number of loads in each process?' c, A6 z6 a! n  y0 R, B( x

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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving- c4 U- j/ f( `8 t+ K) ~% r, W
move into Q_wait /*Capacity is infinte*/
; `$ M  u; |9 E$ N5 T8 d- {/ Qmove into Q_process /*Single capacity*/9 }, C% r: _+ ]4 V) x
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use R_A for n 60,10 min /*Resource A*/
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  [# d; O* G$ O; usend to P_B
" ]/ J7 P; E# `( uend! s7 ?+ ~7 ]) @
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P_B and P_C is similar5 o7 \) l8 _- e' i0 a+ p  i
triangular 30,60,90 min& v* A2 k3 `1 U4 N; `# [
u 60,30 min+ c. k2 A% p' S

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+ b* j5 ?) N3 |4 d" h, u: ain 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.
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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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