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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,
& x7 i9 v5 b8 O. g* B8 m4 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.! z+ P6 l" `; D. n0 `3 b
  Loads are processed by each operator for the following time:) M+ i6 i+ T1 h5 Z; g' C2 U
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 j1 m( k6 _( r+ n# {, Z+ ~2 U( ~# K
  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./ c0 }" N( a7 L
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 j; s+ W# q9 B9 c2 X+ w, N
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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问题:
0 ~2 y$ \- ]- l; v, p3 DAfter running the model for 10,000 days, what was the average number of loads in each process?
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0 e0 M* F& u/ N4 `2 k* `不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
; n/ b& ?: Q3 d- Z$ t# c" H; e$ Wmove into Q_wait /*Capacity is infinte*/1 k/ `, X% K% L. ~+ g9 a
move into Q_process /*Single capacity*/4 p! G) }' O3 R7 X- C' n: \6 K/ T
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use R_A for n 60,10 min /*Resource A*/
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. t* E: Z: Q7 z8 Lsend to P_B" R$ r9 I' e& _
end
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$ T  d7 Q: H3 Z# ^% mP_B and P_C is similar
3 P% {( M5 b+ \* p0 atriangular 30,60,90 min
/ i- z8 v5 L1 b8 p6 O% ?u 60,30 min
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2 U( U6 F8 o% Yin P_C, you need to send to die." N- H- c; {3 ]
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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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4 i+ p. m6 w* Z4 H- B& _7 }' 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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