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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,
- E% r8 n. O. e8 ~( ?6 X/ h' r+ f  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.4 a0 h5 J8 a; i/ j4 S" ~
  Loads are processed by each operator for the following time:# t$ X7 y# `& ]& q( Z5 ~
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
; I* b5 p5 F* s* s; M" Q  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.' Y+ p+ e$ V9 f! G! p
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.# w& d; [' A) |3 [
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.8 F9 e- o  i* K
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问题:7 Q+ _; w5 u2 {
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 arriving5 N, y" A8 I8 k
move into Q_wait /*Capacity is infinte*/
. h/ V* O. x4 i1 y4 ^$ `8 hmove into Q_process /*Single capacity*/  V' J: b* V$ g
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use R_A for n 60,10 min /*Resource A*/5 ~+ p: u: p. K) m$ Z+ q5 y

9 F- D! N+ m3 E, o$ c( \& M* Lsend to P_B; s- O4 O  s# t  A" ^* k
end
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P_B and P_C is similar& y* M- Z# c5 j9 c) w
triangular 30,60,90 min
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; j8 U- T$ m6 d) j% hin P_C, you need to send to die.
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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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% _' q( |# c# ?2 S$ @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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