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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,9 u2 K9 m3 h" d; L2 q
  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.
5 k( m: _& p0 i& R: l+ @: {, }  Loads are processed by each operator for the following time:& r8 R  w; U: k8 n
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 Y& ]0 a% w- F6 d* Z2 W
  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.  O) {& w" c, O* X- M
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 |- T+ N  H1 _( T5 USend 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:5 U1 p/ Y2 O1 D* r" N. a
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving( n  a/ b1 z$ J  F0 j4 O8 j
move into Q_wait /*Capacity is infinte*/
4 l) a9 r# l( v: e! N  }9 d4 Kmove into Q_process /*Single capacity*/- T! d1 Q6 k; r2 Q6 K' F( M2 O

. v0 N0 p, r; Guse R_A for n 60,10 min /*Resource A*// y8 [, N% w4 H& d6 \% u
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send to P_B) u; I1 `7 s1 b+ G! `
end
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P_B and P_C is similar
$ r6 G- G4 T  O# L4 c9 Rtriangular 30,60,90 min
- c( c3 U9 `  w* }u 60,30 min5 T. Y  C0 r: ~# K7 l" n8 i% R

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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.
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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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