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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; O* Z" W1 j4 H! @; B
  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 m$ e+ \* ~- }5 [  Loads are processed by each operator for the following time:% E" I& H& K8 }( f
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 {# W4 o! J' \& 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 B; S9 F# g% l! {9 N
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 U2 N' ^" N. H. z  j+ GSend 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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问题:
+ z- q: b( X  Q8 a' j! D: uAfter 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 D+ O* c+ w6 r. T( `
move into Q_wait /*Capacity is infinte*/
+ j" p8 u) X- emove into Q_process /*Single capacity*/
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* `! ?, b& l7 _) suse R_A for n 60,10 min /*Resource A*/
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) v, C" G8 R! |. xsend to P_B: r; C0 _/ `( b$ l
end& v' ~+ g; R- P' e0 ^3 ]" E- C

  J& w: }& \$ R6 }! h$ o2 kP_B and P_C is similar4 c$ j2 \3 i7 R& a& Y
triangular 30,60,90 min
0 E( ]2 S, K% z- k3 qu 60,30 min* P  t: L! `& W1 u7 Q

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, n+ |5 l7 F+ Y, L6 n3 v7 Qin P_C, you need to send to die.
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0 P0 k! Y7 t# }+ c! D1 d, @Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.0 \# u5 Z5 \# q! ^% \% i

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: l: z- O/ h9 V- wRemember 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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