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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,$ g2 K& i4 X1 a1 D5 G6 B* p
  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.4 _, @. _. A- H% F9 t
  Loads are processed by each operator for the following time:/ t; k, r5 ]  u7 K  ]* [& m
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
( H) ^- \1 G: p' I  M% 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.6 |( ]* X0 w; j/ H5 q5 p' {
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
! J: [/ P, H- j# T5 q7 V2 |; oSend 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.2 u1 `* y: P$ `: w/ h
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问题:
$ |3 L9 j0 H* o( Y! @/ MAfter running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving7 L. x; e  b: L+ z! Z- b" q
move into Q_wait /*Capacity is infinte*// n0 }* X/ h- b2 g& m1 ]/ |
move into Q_process /*Single capacity*/
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3 V2 l* Q" p8 C1 x' d4 Z# d1 Luse R_A for n 60,10 min /*Resource A*/, W0 V4 T& y8 x; B5 a) U
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send to P_B4 W3 y4 L9 @. v9 p" {+ M$ p
end
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3 l4 ~( _3 `/ A1 \2 l. j0 s/ l9 [6 l/ eP_B and P_C is similar; L3 {: d" U$ n- v; M- s
triangular 30,60,90 min
+ a  e; G9 @* du 60,30 min
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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.2 Y( ?: j* _; T# D$ h. }

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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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