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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,7 m/ ?, }" z0 J9 ~& c3 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.
( ?) y! c2 T+ D  O/ W  Loads are processed by each operator for the following time:) Z3 M/ Y  ~0 e4 C0 Z2 @! k" J
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.- r! p- z- U7 a9 n1 F9 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.
" ~+ A3 H: B% s- V: U5 x  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
0 c. a2 V/ |1 p# |& v# P* {* GSend 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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1 Q5 N# L9 U4 L3 @4 m问题:9 f/ D, \6 `4 D/ c
After running the model for 10,000 days, what was the average number of loads in each process?! |  P/ R' o8 Q2 X; x
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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
1 A3 A! }* r0 S: z7 O0 |5 }: Cmove into Q_wait /*Capacity is infinte*/9 `, k' z. z9 p& W4 |
move into Q_process /*Single capacity*/
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) c& p6 [3 ^' a: D! k% ?use R_A for n 60,10 min /*Resource A*/( T5 a: H9 U; H2 |/ O

4 G, u) m) I) Nsend to P_B8 l( u' E, ^% P: z
end, j* s6 c' m; Y- v; I3 G3 B0 S

& b3 \! S  b$ y. D0 _2 r4 KP_B and P_C is similar  ~! [2 u  b7 A/ W, z
triangular 30,60,90 min- F! X/ S/ ]4 E, S5 @0 [
u 60,30 min
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6 [% w* |7 \' y/ Y& Q$ a9 E' Ain P_C, you need to send to die.# ^0 c" ~, y& Z3 F  C3 W
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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.
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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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