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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,' a+ K0 d: b. d; T$ _* w
  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.9 e# }' u# R! `9 M! [0 X
  Loads are processed by each operator for the following time:% k1 j. B6 D4 [/ O* Z8 p! a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. \) P5 ]! x8 b' ]& ]
  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.
/ [+ v5 U* c# o. C0 M" v7 Z  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.! e% F4 s( |  _, L3 Y
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./ M7 w% e0 r- S4 V0 n7 v$ x
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问题:
5 u/ O1 U* G8 t9 zAfter running the model for 10,000 days, what was the average number of loads in each process?' a8 }$ O9 W/ J" S4 R* s* {

9 a" V3 J" d+ d: V不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
, g/ q: g- \/ T3 r' W4 Xmove into Q_wait /*Capacity is infinte*/9 [  x4 l3 H$ E, m& @
move into Q_process /*Single capacity*/
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, G  M2 @" q6 Suse R_A for n 60,10 min /*Resource A*/7 S7 z) j; F- u* v" B" |" p  i
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send to P_B5 l: B1 `4 W! M+ C( O" A
end
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P_B and P_C is similar
% R. m& L  i: A- q4 s2 _6 k/ dtriangular 30,60,90 min& [1 D/ L: \0 F2 J# ~
u 60,30 min
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in P_C, you need to send to die./ J! V# ~: {3 Y

" s6 z+ i0 ~( ~4 ^( h# IThen 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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