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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,
+ r' S2 M, }8 }: s- 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.& o. A; a/ e) b! h7 Z
  Loads are processed by each operator for the following time:& I+ O, t& A) z& A  h& m5 e
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins., T$ F( i* _, E  g" D* u
  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.
) w1 d  ?  s6 p5 {5 _! O8 I  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.! k1 F. a3 N/ A
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.4 Y. V% x8 L; G4 g5 a* g8 Q. R8 ?2 O

7 Z4 `: v$ `1 J9 V: H2 T问题:. T3 M* \0 ?  ?4 m/ U7 S
After running the model for 10,000 days, what was the average number of loads in each process?
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. J8 P2 d3 U0 o5 r" d不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
  {( G! d, D  O3 s; S4 ]move into Q_wait /*Capacity is infinte*/5 v& H/ v" W9 y
move into Q_process /*Single capacity*/7 {; R. ?3 E( F6 v7 W* J- p
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use R_A for n 60,10 min /*Resource A*/6 W* S1 k7 c# `( l" q: X
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send to P_B, H% u+ ^9 G* n8 m# n' K2 d
end- h0 L9 g& B& S5 ], n
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P_B and P_C is similar
8 f. ^& p3 j: x% Q; F, Y5 _triangular 30,60,90 min
  g" G; u; B, y. L5 G- e0 {4 _1 Eu 60,30 min& {& z! p; u  N2 y. A; O* y
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- L9 e/ s7 ]& {in P_C, you need to send to die.3 t) z7 B9 b4 i9 P1 d
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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.+ P' M  G+ p: i) k0 y9 x6 _1 f
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" V. Z' D" t) j! ?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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