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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,- z/ T; Z. @1 d. q1 r9 @: p, }
  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.
( V' s8 g9 k6 A: u( m' q  Loads are processed by each operator for the following time:
! T" B6 R  I' y3 }' n! s  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." p1 R1 W% c* a
  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.0 ]+ D0 Q* x" |3 m* |& K" o
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ J  X8 L4 B7 V* aSend 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:
+ g; ~2 r( O0 R0 YAfter running the model for 10,000 days, what was the average number of loads in each process?
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7 r* a; U( S; U# O8 {不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
) h" R. K; ~+ Qmove into Q_wait /*Capacity is infinte*/
& M8 J1 `# R$ Zmove into Q_process /*Single capacity*/4 l5 F; E6 D$ S5 m# w5 D/ b

+ n4 M) x  r& V6 d( `! z$ tuse R_A for n 60,10 min /*Resource A*/
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% L# o+ I/ ?6 }send to P_B% b# ~# B/ i5 E! d. K4 v
end
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P_B and P_C is similar, o0 l/ q. n  q  c9 |5 \9 |
triangular 30,60,90 min
  ?+ z; n% `0 K2 S3 j! ju 60,30 min
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  x' p* e$ w5 Iin P_C, you need to send to die.
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" G# U4 M+ b3 n2 X; {/ ~! N" F6 KThen 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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