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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,
9 O1 f4 O% H; h$ V  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.
8 m& D( Z% `/ Y  |  Loads are processed by each operator for the following time:) q5 e2 ?( Y9 ]. p5 a, ^) B+ w
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! `, q4 Z  ^7 B( s( U& J/ J" G6 z
  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.
8 m: V2 A1 _. Z7 S! z1 Z* n+ ?  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.- ?2 h9 _& W/ b9 |% m, @  ~
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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问题:
1 o9 M% h. l3 O" j4 n, p* ^* M3 JAfter running the model for 10,000 days, what was the average number of loads in each process?
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( I$ Q* ^- `  x! T不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving5 |1 F5 B; C1 E3 b' {) F
move into Q_wait /*Capacity is infinte*/9 B1 G0 M" g* G5 R9 o
move into Q_process /*Single capacity*/9 |+ L/ \& g; A- T8 @" _

$ H! a: q- b- p2 i4 e2 Nuse R_A for n 60,10 min /*Resource A*/
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" Q$ O- r. ^& e4 Rsend to P_B4 z5 F5 ?) t9 W4 Z+ H
end4 H. t. ]0 J3 H4 X, a. E
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P_B and P_C is similar5 t+ {7 m6 S3 Y
triangular 30,60,90 min
9 y7 m7 J2 e5 F4 S2 ]$ a7 P. y( j; zu 60,30 min
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in P_C, you need to send to die.
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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.
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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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