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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,6 Q3 H* t! L9 K
  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." ~0 ~6 g3 M+ I2 |7 U
  Loads are processed by each operator for the following time:
5 c: e7 ?. G' J/ v- G5 ~( ~  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.  j& s8 y+ z# [, `' `8 f
  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.
  u0 L( v2 H! z. c* D  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ Q3 z! h5 U1 W# JSend 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.6 J: b" Q; B7 x
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问题:! q; I* X/ b" v0 ?( m( r$ L
After running the model for 10,000 days, what was the average number of loads in each process?. i9 A0 u; j5 p& T) S

" k$ O; f/ C' ~不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  A) W. T$ s5 z; h9 m
move into Q_wait /*Capacity is infinte*/
2 d  j  a' }$ `! a1 Bmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
. F( \- B$ |4 }* K, v0 ~- {end
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P_B and P_C is similar. C7 X( g3 v( Q$ K
triangular 30,60,90 min
+ R% S& p. }2 S6 ~  ju 60,30 min6 I& I9 k9 K) ?

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in P_C, you need to send to die.
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% n& w- O4 @$ L" S" D- PThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.$ p' {2 ^3 C4 E6 U2 A
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% r; o7 c# e" R: x, C  rRemember 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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