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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,+ Z2 q& B! D- d( j1 k
  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.
+ D' j+ C- F/ Y" O4 }  Loads are processed by each operator for the following time:2 D  U0 L3 n/ p$ w6 g; z
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 p7 i9 s, X- r, C
  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' a% l# Z" C! H  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ R. b5 T9 q' u. ySend 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.! `5 D( I4 R9 L# L; W. [' a( u
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问题:. ~6 [. T1 f/ D6 O2 V+ g5 R
After running the model for 10,000 days, what was the average number of loads in each process?; d1 q8 r+ f( s) e5 e! J+ A/ H

, H" \0 I4 y+ e, J$ W, u不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
7 _% S2 j' `' ^9 X7 @move into Q_wait /*Capacity is infinte*/+ n3 i; {/ d1 Q2 f
move into Q_process /*Single capacity*/  ?7 q* _% T7 m9 i1 l9 P
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use R_A for n 60,10 min /*Resource A*/
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/ D# j  J1 L8 Q& L$ e* @+ csend to P_B
( I9 Z" s4 o" \# r6 Q6 d. fend
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P_B and P_C is similar
+ E, z- I; o4 V  h5 }triangular 30,60,90 min3 V) ?* B  G& p- n
u 60,30 min% ]& s' y: E7 F2 \  y# U

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in P_C, you need to send to die.2 {+ U, B1 X9 i3 M

" j, W  X# x5 T; o9 d4 E/ F4 ?* MThen 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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