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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,
5 u! |( J: D: }, `2 L  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 N+ ]" c; o" C8 W. s0 G  Loads are processed by each operator for the following time:
' o( s& y; a6 v- R- o3 F/ M* f  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 [  |+ t8 @: ^" d
  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! g# c7 p* a' Y- s6 J; U  L  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 l  O0 o' x# S+ ?+ I' q0 eSend 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:
7 |' q3 y, B, fAfter running the model for 10,000 days, what was the average number of loads in each process?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
- x0 F* Z  {3 Nmove into Q_wait /*Capacity is infinte*/9 r( q& Q" m& w& m7 p
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/% _8 h% N) f9 a6 _. X

7 p" e1 G( C9 V8 e; |# ^send to P_B* y/ _( s: B9 d; ^  W* K7 ]
end. L( Y3 h& D+ f' w/ q: j) ?8 E6 x3 o
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P_B and P_C is similar
, t9 N7 `3 l8 e# O) r7 k. wtriangular 30,60,90 min
  |/ }8 y9 L: {+ x' M3 Wu 60,30 min+ |8 f) p# D" _- ]* q( u) ?( u0 C
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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.* i9 A2 x5 m& V2 ]. L8 J; A

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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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