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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,) {" p2 I7 \- K' n0 a7 \, b
  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 ]3 [9 L5 t( V7 i  Loads are processed by each operator for the following time:+ R5 O1 e% E4 ?7 t" y9 T! S
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 v3 D( J' Y; j+ z
  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.' w5 |& u4 B( U7 Z9 }
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ D& e8 d7 q/ n' k$ u" gSend 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.0 [4 m- t: h* y& w# ?* \' |
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问题:
8 j) d* |5 z4 sAfter running the model for 10,000 days, what was the average number of loads in each process?, ?  S: w: |+ h* ~
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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 arriving7 g* X# B; n3 }+ P% ]" A# e
move into Q_wait /*Capacity is infinte*/) A6 Q% k0 ?1 H0 B# c$ m
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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; n, Q6 Y5 E5 Csend to P_B
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P_B and P_C is similar) l4 I/ @+ o6 r& o4 r4 i
triangular 30,60,90 min! z" T/ h9 s/ _" L1 C+ e
u 60,30 min
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' O( ]$ s. S4 \1 X2 ~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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