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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,. t6 l: ?6 l2 W+ Z* _
  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.+ J. Z% L) \! n3 ~4 F
  Loads are processed by each operator for the following time:- r8 C  i- z; O% K" Z. q' I
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.$ f2 w4 l) T  K/ P) M' d. L* f
  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.
  G/ W0 b/ f4 F# f0 P  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 |+ Q8 Q" ^" G1 E( _& Y% t
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:/ `- m' t! l5 y# D4 Y) n, W: J6 V
After running the model for 10,000 days, what was the average number of loads in each process?2 }0 @7 s" Q# W  b7 I$ |
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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 arriving
2 H+ [; }8 G1 Q+ p4 hmove into Q_wait /*Capacity is infinte*/2 G/ R0 o% f0 s- V
move into Q_process /*Single capacity*/& R0 C/ k6 H4 L1 i, i+ D! h0 Z
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use R_A for n 60,10 min /*Resource A*/- ?) C+ C8 ^9 U3 O! ~

. r; @- x& q1 b# b( z& o4 I9 ksend to P_B1 A0 r8 i+ T+ m% N
end
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P_B and P_C is similar  B/ V, y3 S- \' q! `" r% F, r
triangular 30,60,90 min
  t% a4 ?& A" x! ku 60,30 min5 ]; z+ v* C* x" a) q# S1 g7 {+ H
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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.: \/ d$ W5 l9 R: I$ |) T- {$ P% F

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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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