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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,7 O1 _) B$ \0 B& V4 m4 t' 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.
' x& g/ t; L: M: O2 c  Loads are processed by each operator for the following time:
1 s' T% e$ S3 B3 n" Q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 b5 I7 [1 s1 I4 H9 J. U* g3 V
  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.
4 o8 @4 _" M2 U1 V$ s  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.+ W3 q; {0 B2 k
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:' z+ l7 o0 N  `4 l" E2 U
After running the model for 10,000 days, what was the average number of loads in each process?
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  D* C: n/ m8 ^# O* J不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving6 l% p4 A9 M3 a0 m: D: ]
move into Q_wait /*Capacity is infinte*/9 _- Z% l' `- v$ v- |1 ]
move into Q_process /*Single capacity*/
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, e) M3 S; e) r: M5 K5 Euse R_A for n 60,10 min /*Resource A*/
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0 Z& M0 i9 f! L4 z1 o' L  zsend to P_B
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P_B and P_C is similar
& ?2 z$ B  J0 Q- Ktriangular 30,60,90 min. f$ `/ `, ?; B) h% P
u 60,30 min
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in P_C, you need to send to die.0 M: m! ~( F" t+ [

% F% {) U0 b, K$ g7 U: XThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.8 Y1 A' J7 w! i8 h6 K

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/ ?& J4 [( [4 A! iRemember 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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