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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,8 a- c3 X* M" Z7 _( W* f
  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.6 T7 p) c# b$ [; G) [9 w- |
  Loads are processed by each operator for the following time:
9 `3 w6 L( r" Q5 Z, p& Y  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
( K) l/ K0 D5 B! B% A( V  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.
; S: h! b- T- H5 R/ h) M  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 }: Q  o# Z+ Q$ J# o
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:; F: ]  Q+ B: X8 O9 ^2 ]* x
After 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! r7 l6 J0 p' G2 d! k) _* E0 w
move into Q_wait /*Capacity is infinte*/
2 }' Y- D5 i: L% m4 s* Fmove into Q_process /*Single capacity*/
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3 B- b0 ^0 d1 Z  H) h; Huse R_A for n 60,10 min /*Resource A*/1 R8 r+ a7 A: X5 e2 Y

" A: N* Q  E! l6 y/ v$ }send to P_B
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P_B and P_C is similar8 {6 U- {# L9 S1 g/ \  G7 Q+ p
triangular 30,60,90 min
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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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