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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,
5 v+ F# E& A8 w- H6 E$ 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.' U* Y, a+ i' m0 h
  Loads are processed by each operator for the following time:% w# o8 Z) x! Y
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 N+ d+ ^, ^! x) B3 U* O+ D2 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.4 }" u* C8 X' V" [
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ H# v" Q3 i/ n6 R0 e! c/ a, |( H# p6 ISend 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.. i9 T3 H$ a/ z# T4 k3 W- F( P1 p
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问题:/ g0 C; F2 S  t8 r( Y- E. @5 @
After running the model for 10,000 days, what was the average number of loads in each process?# z3 A7 t. Q8 s& V4 G

$ F$ r& e+ d2 }0 p不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
# z- ~* B* Y8 n9 c2 A; a+ pmove into Q_wait /*Capacity is infinte*/
) e* z3 G! t$ X! Amove into Q_process /*Single capacity*/# \7 ?2 k# w1 p; X& V. ]) T" c

# _" U* E3 o+ f% p7 C: Ause R_A for n 60,10 min /*Resource A*/" h, b4 m2 g4 K! [4 f% A% z& P
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send to P_B, z* k' Q4 V$ {3 S5 C! k
end
# v  c5 [( {4 ?3 k9 ^  ]4 b% e, }% |  g! Y. b9 R% B8 J- V
P_B and P_C is similar0 s, c( N& A- u8 G5 \* o4 Z' {2 t7 K
triangular 30,60,90 min
* C- B$ B3 P+ x* S; Iu 60,30 min- N4 n5 [4 `- J) K+ Y6 N

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in P_C, you need to send to die.  i- X5 K3 {8 _  n: N! n

& Y8 `! h) E5 H1 W) z) c0 [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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