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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,
/ q- Y* }/ \- c1 m# ~  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 S& g# Y1 f1 @; e* o5 _
  Loads are processed by each operator for the following time:) i+ S1 R8 ^8 l3 u, d4 N+ q, C  g' f
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
5 u' \: w* D; F5 t  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.
  y  \, F' r; A" l  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: B7 R9 f7 M6 ]! n
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.2 C, J) W& j1 b' y1 Q! A
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问题:
$ x7 z0 a/ ^5 p6 Y& }+ sAfter running the model for 10,000 days, what was the average number of loads in each process?
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8 R+ f( i* f0 T$ \+ D不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
3 {/ N$ i6 ]' |. M6 m4 n& tmove into Q_wait /*Capacity is infinte*/
( B- Q- y$ f) y2 I1 ~2 Kmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/( p/ T/ U( X6 W
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send to P_B
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P_B and P_C is similar
. Q! ~$ U9 B/ j8 v" H3 Ftriangular 30,60,90 min
7 a5 ?- r. w7 d0 s3 {" qu 60,30 min' n) \+ X* Q+ _; r7 `# M7 Z
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4 s2 W0 y5 R; \in P_C, you need to send to die.+ [& ]- I; W/ b7 w0 D- k8 I

1 `# @, e0 |3 C8 G7 s' AThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.0 R1 ~" o) d: J
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& {( b0 c1 c, K) K: T
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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