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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,
; `: ?/ G6 l  ]  @1 T6 f. ]5 t  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.7 b9 [% m; [' z% S" Y& P
  Loads are processed by each operator for the following time:. H6 K$ j+ n% |, A! _8 e! L9 Z- R8 ?5 b
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 g0 Z) Q6 D+ F8 Q$ |6 H  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.- |9 R! u* N+ J; E# [+ e6 X
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
& D/ X) X$ S- k( W- ?) ^2 L0 ~& QSend 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:
. w7 A, j% `6 G( {- EAfter 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
9 s( M5 n: ]; a4 m) t8 X8 q) I4 Xmove into Q_wait /*Capacity is infinte*/; N4 j8 H/ z$ T
move into Q_process /*Single capacity*/" Z# i( K: Y4 O7 Q

; R" D; w3 r3 U& Wuse R_A for n 60,10 min /*Resource A*/0 z) h& N0 k9 D/ x  H

# m! l2 _8 Z# V3 Y8 M- j0 T; B9 rsend to P_B
8 L+ G% w9 u/ ^& uend2 ?2 R9 [/ @0 C9 F8 k& ^4 I. d
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P_B and P_C is similar2 d5 w) u8 Z% m0 g3 `" n0 q
triangular 30,60,90 min7 D. U+ k1 Y3 x9 l# k
u 60,30 min
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6 a$ I: E. ?, V' h. w' d8 Tin P_C, you need to send to die.5 s, k0 i- k8 E9 I
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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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