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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 g' N/ K( R% D# L6 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.
) L# `: A! X# Z0 c: k. [  Loads are processed by each operator for the following time:$ x: x6 g- {1 h4 E$ N+ B6 I
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! M0 @/ W: }$ j. n, _& Y% S
  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 d3 c$ g! t2 ?2 g; {# b
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 Q: A" Q9 K8 w0 {
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.9 W8 F2 h4 w4 M2 F8 S( @' H

  C5 @3 `" ]$ r问题:
4 v; _! ?" \+ g# fAfter 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 arriving
5 s7 O! z1 [- ]! ?* w- h& Z& Cmove into Q_wait /*Capacity is infinte*/
) ?0 r2 X6 G7 A6 p: Y, q" zmove into Q_process /*Single capacity*/
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* h) v) W4 l0 @# u) s8 X' l  {5 ouse R_A for n 60,10 min /*Resource A*/
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& Z+ Z$ C' S) \+ y; L% l+ ^' nsend to P_B
( ], w+ o4 C4 i* Q# }end6 O# H( ^( Z7 e$ d+ `

( @4 j) I4 @# Z4 V$ DP_B and P_C is similar
  `/ k9 @  r1 k: O$ @5 t  g5 Ztriangular 30,60,90 min
( w0 D# u& o% p, W$ \u 60,30 min
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( }+ r/ Q' o5 N5 V8 Q4 H  c: fin P_C, you need to send to die.$ \7 }. ^6 D. d9 ?
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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.! V) t5 {$ o$ D, w4 {5 {

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- O& g/ E6 e' k6 f3 }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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