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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,% ~" s9 C# l0 w7 H- 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., ~: t) Y- F" ?* n6 M3 L, z7 H9 m9 _
  Loads are processed by each operator for the following time:
' R* T* q8 m2 D+ ?( |, C  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; A9 z( h* W0 c* 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.9 u/ o% _% U& t: N4 ?( C1 K
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.( V) ?: P. E: B4 e! ~0 |
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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  W/ j, j2 K9 B' z7 g8 A问题:% h3 ]# t  I4 R( j8 I# d3 ]" L
After running the model for 10,000 days, what was the average number of loads in each process?
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- F+ T0 }  ]/ B( h不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving# w6 ]. ?: b9 V
move into Q_wait /*Capacity is infinte*/
6 G5 K7 l& _' I3 lmove into Q_process /*Single capacity*/$ e$ V: J0 h  R  y# `5 U

8 f  B9 d( n4 b0 M. Vuse R_A for n 60,10 min /*Resource A*/: |/ \6 c; u- }; M8 a

. Q4 A! E3 H; t0 t) ?" z5 t! y( bsend to P_B8 x' P2 y7 g; @
end. A0 k( `- p! E( n! [/ z2 ]

3 q$ w' E4 F+ L. ^* KP_B and P_C is similar
: g+ c4 e1 D$ b' S2 l3 wtriangular 30,60,90 min' p9 X9 [4 f8 c
u 60,30 min
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in P_C, you need to send to die.4 E" s6 J/ Q5 D" i" Z. w0 @
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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.' {" K5 ^: [# O0 b" o. H
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; x6 X# G7 s: ]9 U1 x+ g- bRemember 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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