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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 M$ D) ?& }2 ?
  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.# |( S9 p, V& b5 q, ?" [3 j
  Loads are processed by each operator for the following time:
7 H* `- q6 k$ h5 d" f$ R  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 i" c& d& Q. \4 E" 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.6 e/ B& S- f+ C* ?/ |7 X
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
$ r  Q+ i. O7 [  W- |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:0 ~; P' _$ C0 M
After running the model for 10,000 days, what was the average number of loads in each process?4 t3 m; t1 o, d/ o0 y
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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: b& Z, G$ B9 U  R
move into Q_wait /*Capacity is infinte*/6 @4 _8 z: x0 b3 r$ L* l; W( \
move into Q_process /*Single capacity*/- i* e9 B$ J8 E4 M% k6 Q* D

3 r3 U, e: _* [8 z6 s7 T1 vuse R_A for n 60,10 min /*Resource A*/
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send to P_B; k/ o" R+ R! @$ a5 \) [" V
end
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$ n6 y, ]3 w$ Q$ |8 `  uP_B and P_C is similar
2 b! h* v4 h  I' Y9 P& U* W& Mtriangular 30,60,90 min
% g0 M' J7 O6 Ju 60,30 min% u4 H7 O* O: x/ y0 x

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' g" x& Y# u* ^, A  A) v7 s+ _in P_C, you need to send to die.8 d- K6 l2 U2 d1 y: [0 T

& o& P% n; K6 I1 |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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* G5 X' t( p7 w2 e" g) U! aRemember 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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