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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,% @, l  b* H8 Y! `- ^
  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.
, @, q& z: I" x  Loads are processed by each operator for the following time:
: ?- |  B+ D( w5 z2 [  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.( w/ d5 ]& {1 I+ g
  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.2 O5 [# o* U9 ~* {9 y
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' [" O+ X$ m9 N& G0 rSend 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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& P8 ^  g* s: d6 x) S  ]" ~问题:' G# ^9 e3 Y! {
After running the model for 10,000 days, what was the average number of loads in each process?' h% x" w  o3 x9 b2 I

, P% \& w3 ~* ^4 h3 _2 y! A不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
, o8 y! r/ G/ u7 B' i$ N7 Umove into Q_wait /*Capacity is infinte*/
( q3 ^: v7 q' P. `# ?7 qmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/  S7 G# e! L# L% t+ F& u. S" Q$ l

2 B) k+ g) X) l9 tsend to P_B
- {2 _4 k( [/ d2 ^& s& jend
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, [- D- f' U: FP_B and P_C is similar( n8 P0 t/ V' a' s0 u
triangular 30,60,90 min3 |2 `! Q- w- Q6 l& h7 w
u 60,30 min
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! Q& j# `. L/ }in P_C, you need to send to die.. H, p) h3 R, [" n
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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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3 P: n+ l4 z- |& v/ G6 I. cRemember 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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