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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," c! z2 z$ v2 N) ]6 s
  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& v. d* P$ Y# c* `/ b  Loads are processed by each operator for the following time:  k: k- E; q/ D/ y8 z6 G
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
) G& ?% h+ r7 D$ E+ {4 |  j  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., E2 c# ~. X9 t8 t5 |
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
+ D' l( q2 [& E, g3 p3 u5 n- TSend 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:' }4 p. {6 E: K( z2 x: r, B
After running the model for 10,000 days, what was the average number of loads in each process?( H, T, I- J0 U2 B
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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 P8 l: X! w# F' P1 dmove into Q_wait /*Capacity is infinte*/% F  C# _5 I! V' v4 U
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/2 [8 ]8 O: V3 d& L: B, f' ~
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send to P_B  y& @) e7 M$ c4 F4 S! n" A! q
end
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$ b5 c' {  m. J2 f8 d( r+ B4 KP_B and P_C is similar
; k% c3 |7 N& k, atriangular 30,60,90 min
4 q3 M, d) l6 w$ b/ j& a9 X: Fu 60,30 min! }. X- D4 [  `8 m3 i
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9 A3 |) C/ j# u4 ?$ Xin P_C, you need to send to die.
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* O) C, G/ c" e$ oThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.+ ^: T! j6 x0 B& M6 ~, N% n
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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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