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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,1 l2 |8 }" C- V7 p1 u1 O$ w
  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.
$ [( h9 H  l( S: k  n5 [$ b  Loads are processed by each operator for the following time:
: m0 O8 C9 l8 G! k# L. d( |! ]0 t) Z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. {5 u2 [" \6 `- S( Y% n% _
  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.
2 Q; f& }- J* t, \: t# u1 U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
4 Y1 D3 F- p9 s2 u) ?& }" w( _1 tSend 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.) T5 m: b+ j3 _) P/ p1 |

  m1 ]* V' f2 W8 F问题:
- @" f% r% f/ F$ o# t! h6 O) n3 KAfter 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
0 F6 C" h* @4 w9 w7 }move into Q_wait /*Capacity is infinte*/
8 F+ E% Q) W( P' j* Z7 ~move into Q_process /*Single capacity*/# z4 {2 V8 k4 T# u
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use R_A for n 60,10 min /*Resource A*/
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; Q2 l$ R6 G$ Z* ?send to P_B- A0 s8 P5 j/ D) X: L
end
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3 o/ m2 Q+ O3 mP_B and P_C is similar
. t# U, S8 C- [0 M* ~triangular 30,60,90 min+ O2 o) P/ e3 I' k( x2 E) \4 t1 d
u 60,30 min5 a# {+ N( |: G3 m- v4 |' F* \- q
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in P_C, you need to send to die.+ N8 |, m% ?9 Z  ]2 n7 E
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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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; c7 E, p3 l8 t! M& I# {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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