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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 ~0 y& G: ]6 E5 b: x  [
  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.
2 c7 R% X# M/ r$ l% [  Loads are processed by each operator for the following time:
2 i  ]; ]# k1 T  |  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.6 [4 _) M' E6 ]* E& k4 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.6 [0 b$ s) [$ j# w0 _  K
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 v* o3 y! U/ p2 R$ x6 |2 G2 x
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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问题:
& W! g7 w" {, W) iAfter running the model for 10,000 days, what was the average number of loads in each process?
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$ c8 ]3 f1 ?3 D不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving3 g' n: R9 r. T' h+ z+ e
move into Q_wait /*Capacity is infinte*/4 b7 Z) O; n& s! F6 F
move into Q_process /*Single capacity*/, \+ l1 f6 P/ o5 _
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use R_A for n 60,10 min /*Resource A*// L) S9 ~0 ^) @0 T
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send to P_B: k" f8 D# p! A1 l/ ]; y
end. P* i0 M0 b! R

& z7 J" H  B6 }8 {, X! EP_B and P_C is similar! ^, e, ~7 ^; G; i1 g+ L1 W$ d
triangular 30,60,90 min
& I2 b, a+ z6 \u 60,30 min1 u. F2 X0 S2 U8 W3 }
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. Z  }( y5 O' z1 J, Yin 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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