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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,& ]4 X  ?3 a$ T8 ]( `6 \# _! |
  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." q6 O8 U5 h* K
  Loads are processed by each operator for the following time:7 t3 z8 g; J; g& L' j0 c
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.. a/ S$ ]6 a0 _1 n2 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.
* B7 i3 q  o' C2 p" Y  Worker_C does the job in a uniformly distributed time between 30 and 90 mins./ ~' C' N2 m; J& a
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:* |, K$ v9 E' b0 g  K: i
After running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving6 K" T- b. s. _4 F' W
move into Q_wait /*Capacity is infinte*/3 k; D  B8 C. L4 g% p
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
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P_B and P_C is similar' K# W' i. q. n' o
triangular 30,60,90 min
( [$ T! @# t* V+ [1 Z4 ~8 G+ N$ Qu 60,30 min! N. G8 ]6 B6 h  D0 Y- Q8 Y
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in P_C, you need to send to die.
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4 E( y, Z/ T, U+ \, eThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.5 p& m+ M; w5 I( y, `
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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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