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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,. d, F0 N: d: `
  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.# ^* k! P% m/ g! z; C
  Loads are processed by each operator for the following time:( k% I% R$ \# b
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 m( S" v! Z" p7 m+ a
  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.) i% e5 l+ Y* I8 g; F
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.$ }# l% Z+ E$ H
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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After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving" E3 n5 ~+ d. ]% S
move into Q_wait /*Capacity is infinte*/( v4 \' Y) z8 d6 I
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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6 w+ E: S( T2 q& {send to P_B
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: j5 ~0 I* m9 L. b* C+ DP_B and P_C is similar( k7 R0 f  t, q; C9 f
triangular 30,60,90 min
# Y- ^) Z% b( p5 `+ [- Uu 60,30 min
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in P_C, you need to send to die.1 X: J' V1 `7 S8 d
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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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