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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,
  G  B7 Y( n8 l1 y) Y  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.$ i7 y1 i8 S9 J$ p
  Loads are processed by each operator for the following time:7 z" I$ _, ?1 g
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 d/ P5 Y. K+ c6 h  o
  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.
  v0 v* l& a) }; X  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 R( C. [$ K; R3 G0 q8 I& J
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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5 r/ p6 ]% R/ u& B1 j7 o问题:
$ R4 N1 J  |. S: NAfter running the model for 10,000 days, what was the average number of loads in each process?
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" z& O+ {1 [3 `0 M& A不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
: {+ K% b+ r" ^' N4 N) \* }move into Q_wait /*Capacity is infinte*/
- [6 z; Y2 F7 |6 K  Y# ~4 }% `; ~move into Q_process /*Single capacity*/3 I% T1 `5 k- r/ r; Q7 ^1 H

0 [( U, u" {- w; {0 Zuse R_A for n 60,10 min /*Resource A*/
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send to P_B
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6 b9 v% j8 J- C/ [P_B and P_C is similar# c: i, E3 J) g( I
triangular 30,60,90 min- T& m9 T4 m( a; F$ a* a
u 60,30 min) `$ G6 x, y; {- p; z8 g0 p8 ~2 y+ T5 y# [
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in P_C, you need to send to die.2 b( Y* L/ F6 O( l6 a3 i0 y" H& f

4 X( G( P6 y, W2 s# ]Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.& h! O$ f3 Q2 o; }$ [7 \, x/ i" D

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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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