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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,
/ }8 k7 Y2 H/ 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.
( M- j, M, [6 o+ Z1 N0 t$ L  Loads are processed by each operator for the following time:
3 Q) L2 n1 Q: t3 [; Y" U5 H; i  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.7 K5 s5 x. |( 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.5 R5 {0 f5 l9 V  ]( {% o
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  W) T2 V9 h" P2 xSend 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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, L% f- a( V  C" H" O问题:* N# A' P" [$ s) z
After running the model for 10,000 days, what was the average number of loads in each process?& _9 N7 ]1 w, L9 Q) E$ l4 q/ K
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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 arriving0 _  Q( \* B- w7 i4 ^
move into Q_wait /*Capacity is infinte*/+ i# s  @6 G/ O7 Z( R. f
move into Q_process /*Single capacity*/" U, S# f$ C/ U3 `9 a5 b1 W
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use R_A for n 60,10 min /*Resource A*/7 p( \9 M& `4 i: Q" }  J& z* r

* j8 h& |/ A$ J9 x% w3 Isend to P_B# X2 _9 J2 |) J7 _
end
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2 ^1 Z! t* G  p7 |; J. I# k' tP_B and P_C is similar% h0 [, O; j: t3 c) N( a
triangular 30,60,90 min! a! ^) S$ R% P- [
u 60,30 min
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! n. V! Z  C7 o' n7 R& xin P_C, you need to send to die.
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# `4 j" Z5 L( ~/ D1 B1 o- cThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 u& M8 R1 w7 W# a/ S
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/ G8 F1 o: M0 S1 E, a  j6 lRemember 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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