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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,
& R4 Z* N3 o7 H9 v/ E9 L& r  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.
  Y3 g+ s/ s4 G0 G6 h$ E/ a  Loads are processed by each operator for the following time:
8 s$ }- n* `# Y+ v/ w. z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ ~/ h4 P7 }9 P: r  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.. e  m4 i, o# A0 o  }6 Z1 |( P
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' ~! C3 z& m. u- nSend 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.- Z( D' G9 c/ F
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问题:
0 W; v" W3 o" m" MAfter running the model for 10,000 days, what was the average number of loads in each process?5 B( j9 e! T' p* j; W! H# R
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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+ v$ r5 F1 _* q* A$ ?' Q; ]$ {% X
move into Q_wait /*Capacity is infinte*/
3 z- y' c6 C' [* B! y( Wmove into Q_process /*Single capacity*/1 B8 j* O' O% K- _. V  }" S

9 K0 n0 O7 D; p6 N" Q5 m$ {use R_A for n 60,10 min /*Resource A*/
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: [4 e9 q$ e3 ]* ^. H# Usend to P_B
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1 G! E! N( R- KP_B and P_C is similar* O' U9 H' E7 a) L; x; e* `
triangular 30,60,90 min  s. E; n: `# ?
u 60,30 min
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in P_C, you need to send to die.+ o0 a+ j, _* C, m5 w/ B0 m) H

  p0 Y1 K+ X/ x2 JThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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- T$ |' i7 d, MRemember 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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