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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," Z& U% C8 s. Q: @; ?! k( ~" I
  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.' j" A! f5 W' G
  Loads are processed by each operator for the following time:
9 a) |; `; Z/ T+ V3 k  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
# i/ j4 d: c& q, C. x5 ?! G  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.8 h# w; _. H9 F6 j
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' S+ T- E5 Q" A: U8 ~. _
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.7 V6 _' ?) Z. `/ z
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问题:
$ {: ], C3 P& \# t  U7 zAfter running the model for 10,000 days, what was the average number of loads in each process?; |, `& E' m; Y) Z3 x; v
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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( j" M+ |: E3 L1 B; K
move into Q_wait /*Capacity is infinte*/
# C3 C# g2 {) V* _9 X8 O! E8 W' |move into Q_process /*Single capacity*/9 @7 m  y7 G- l
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use R_A for n 60,10 min /*Resource A*/
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send to P_B- N' B# i7 w$ ^9 {/ e1 z
end
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2 f* r0 T5 A3 w( b4 WP_B and P_C is similar
* \4 b0 k$ C9 H9 Y% }. {triangular 30,60,90 min* X1 H9 g8 ^5 G6 I$ @# K5 D
u 60,30 min
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$ q4 Z$ x6 G" J  E/ |0 o; R4 X2 pin P_C, you need to send to die.
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* {% a1 v3 J! `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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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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