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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/ L/ j! ^1 Q9 P+ m& L5 Y7 `1 c* d  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.
2 s! B) B: l( N/ f2 z  Loads are processed by each operator for the following time:
1 |  {3 a" w7 H' ~3 _$ V  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 A7 h0 T) y; v3 B
  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.
- f3 Q1 [0 f# e/ M. Z- R3 l  I  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* ^7 o. }- n- J& HSend 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:
# C( o: H) Q/ q4 mAfter 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
, N: c8 ?! x; {. amove into Q_wait /*Capacity is infinte*/
6 ]2 m9 F2 T! E9 N- p( C: g4 smove into Q_process /*Single capacity*/
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. X% g* K5 L, `  r, s! Ause R_A for n 60,10 min /*Resource A*/, Q$ F( P+ L! H- ?
, `5 v3 f2 j0 E8 ^+ i2 f4 O
send to P_B
( y- `1 E; s$ Lend
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& i% X* ?# J; xP_B and P_C is similar3 M: J* w6 N5 q5 P. C! R# f
triangular 30,60,90 min
* o, i6 t, I' K- T! M* n: h- G8 ou 60,30 min
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% `% t4 M3 I4 i5 ~7 l5 `' {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.# B8 A- c( l. E0 f; H
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" I4 _1 G- j0 E  k7 |! ]) ~' Q* U+ ZRemember 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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