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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,
, U: v! S, ~4 e6 J# [  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.0 E4 d& o4 }, S5 a% K
  Loads are processed by each operator for the following time:; m$ R, r& O! X! U/ k9 }0 ]' H
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.+ l, o7 P/ R* t
  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.! Q! r2 G( N: [
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& ^8 @2 z: k) i4 N  r8 l
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.8 ~/ j6 F6 o/ q9 \$ Z. X- L
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问题:
/ N& [6 Z0 x" O- yAfter running the model for 10,000 days, what was the average number of loads in each process?
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2 E7 B% Y' A  b, f3 F- ?! v不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving9 u, i+ n1 P2 ?; W" Z
move into Q_wait /*Capacity is infinte*/
) ?+ E: T7 H8 Tmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/* [* t0 H- M7 Z! `& L% S
  L+ `; h$ D+ N
send to P_B/ {6 T7 z4 e. U
end& ?. M- P. s- @( @/ u) w( ?
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P_B and P_C is similar" g: Q: e: S" x% S
triangular 30,60,90 min
3 |' U  g0 L+ e* M, wu 60,30 min8 ?- j! \6 [" s8 L

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, b! g' _/ j; @8 |3 V8 |2 K9 b. Ein P_C, you need to send to die.) t# ^( n) J2 D. d6 H/ y( B

$ q3 r4 F1 o- c9 v7 R( VThen 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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