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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,$ M. n  _0 Y" n( M5 B9 v+ I* V4 {
  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.  C+ c, V0 I7 K& i" g9 w
  Loads are processed by each operator for the following time:- T7 [, k- J9 u1 z1 a3 e
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ c4 w# p; h- A2 o# q; u+ 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.
2 F( t$ `3 w- S  d1 A  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.* Y5 z) o7 ~6 j# X& Z
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.7 C* F2 U6 `" i' |1 I

1 R3 Q9 Q. |: Z* ~问题:
( q) ^$ ~* C! @/ M+ M; R" K" ?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 arriving2 l% _. g/ l) Y+ G( S
move into Q_wait /*Capacity is infinte*/' ~( Z8 v# Z8 r8 |
move into Q_process /*Single capacity*/# X" M# [& h. R4 ]; E4 J
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use R_A for n 60,10 min /*Resource A*/
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1 c3 V7 m. k/ w; P& E" J5 O$ qsend to P_B
5 |  t9 _0 B" u( D6 ]2 @" a6 I0 X+ kend0 p+ e; f' G5 F3 Y) N3 Q

$ p- ?, w' {( J- ?; x9 n+ s6 rP_B and P_C is similar# H- l/ @. t' F/ P: q
triangular 30,60,90 min& c: k9 z! \0 T
u 60,30 min
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in P_C, you need to send to die.# `) ~( T9 d5 p" `

9 J( ?% ^0 q; g0 F6 b. p/ T: V5 WThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.2 ]0 @! q4 q, W! q

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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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