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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,) A+ L7 f) j+ k' ]5 o' ~" O
  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./ N# Q+ o6 J( b
  Loads are processed by each operator for the following time:
) R% W  ^7 R1 G  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" o2 P! w3 B% c, {5 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.# y7 d* k9 ~' k
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
3 _" x. C3 e* K! RSend 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.3 |4 q  f' a5 u* X) i
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问题:4 g) \. O; u8 D( t. ~9 v
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving$ z, X; S' x9 l1 H2 y
move into Q_wait /*Capacity is infinte*/* r  w7 v/ E' O7 g" l- \
move into Q_process /*Single capacity*/* h( n8 Y. e# t
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use R_A for n 60,10 min /*Resource A*/8 Y5 `  V8 W3 k. i) j
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send to P_B
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% d+ s. n8 K8 c1 c8 j: K) cP_B and P_C is similar
- [7 v1 B! Z  V) K2 Ftriangular 30,60,90 min& H: [6 y. [9 Z2 F/ `" R
u 60,30 min
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in P_C, you need to send to die.4 I; E  Q8 P6 ?) N" p% _1 I0 u" z

0 k. F6 D8 E, h6 YThen 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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