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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,3 s- A$ U) l) [$ l3 ^: M. ^
  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.) X* G! h0 M# a7 S. R
  Loads are processed by each operator for the following time:
, |1 m) c) q  \. }5 F7 E  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! K  m% W" @/ O
  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.
6 G: m- A' x( U# o- e' b6 n" g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& ^, Z7 K# {4 g. G! I+ [
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:7 |2 j& x* a$ t9 n+ C
After running the model for 10,000 days, what was the average number of loads in each process?1 U  |. v1 F1 y' b" P
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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
  X2 N% w/ J' V3 `7 y9 [move into Q_wait /*Capacity is infinte*/
9 Z6 K* Z* E. H& ^* j. k; j: p4 Cmove into Q_process /*Single capacity*/1 [  r, ~% @6 C7 D5 ?) |6 G
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use R_A for n 60,10 min /*Resource A*/
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1 n/ h+ o8 j* v0 ~( S- o8 Xsend to P_B" o9 J3 @2 z. d  r% v7 \- F' [
end
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P_B and P_C is similar, U, o/ m! y/ X0 a) V' b
triangular 30,60,90 min4 \5 ^' d# h" s! }4 h( U
u 60,30 min5 L  Y( x1 U4 u  P) X
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in P_C, you need to send to die.7 Z( x; v1 l5 J! @  m& R

2 x. y# F8 W9 k2 P. B: G/ K- JThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.6 I+ a/ R" d* Y( K$ J

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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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