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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,
$ @% v  R$ N" J1 }% g) T& Y. n  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.# d9 _% ?3 s! \$ K9 e
  Loads are processed by each operator for the following time:
+ J) e& \' X* a4 {; m  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
6 J" \: Q+ C! I; u  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./ ^( H7 X( m' U; \0 C
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 c; I, I3 |/ }; }4 x
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:, Z5 B7 P" y# @2 t2 U5 }
After running the model for 10,000 days, what was the average number of loads in each process?$ m+ G" D3 z! R  W' W+ x

  f) _8 U7 Q0 x不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
* W+ t! B$ K3 A6 \+ h0 wmove into Q_wait /*Capacity is infinte*/; u1 W. O8 j7 D. M+ j" o2 G
move into Q_process /*Single capacity*/% O* m6 t( K- t6 y
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar# S8 |0 r: \2 ?+ T% z- F
triangular 30,60,90 min0 J! ?# n  J- N( ^' W3 t  z
u 60,30 min
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: f; m4 T6 z2 e6 z; I9 j3 O$ Gin P_C, you need to send to die.3 f1 q; S! |# W  X

/ N5 B, ~7 w) lThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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) N- C  r# Y. X5 G' x0 p3 M& G; M( ARemember 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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