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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,$ G4 Q% A4 D, M8 v
  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.
* W9 |6 W7 J& h% Y  Loads are processed by each operator for the following time:
" D8 ~: f3 c3 o  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.# Q+ o) b8 v/ V$ V( Z+ K
  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.' E$ |- V9 ]5 i( w8 ^: G8 O" m
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 j/ A1 o$ T- p) B$ x
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 u' w% }. S, }5 J! O6 ^

+ t6 {* O3 p: I5 d& K问题:$ `* e" {5 h5 }( C1 I8 n: ]% q
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 arriving
$ o1 L+ t( t& ?- Z/ y4 qmove into Q_wait /*Capacity is infinte*/) Z: z7 i! U* c
move into Q_process /*Single capacity*/
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9 Q. P6 K( L) D3 K" N: Muse R_A for n 60,10 min /*Resource A*/2 |6 D3 e1 h+ D/ l

/ i# g0 d; n9 _4 `7 _send to P_B. _( j% B5 ^) C. {; u. a
end
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P_B and P_C is similar4 Y3 Y. m9 }6 b$ p7 n4 o7 M9 [
triangular 30,60,90 min) N0 ^' W! V. |0 m) x
u 60,30 min
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in P_C, you need to send to die.
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0 V- W1 e3 k4 vThen 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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