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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,9 ~5 e( a1 X# c) j
  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.
- {8 v( O5 E* n* e  Loads are processed by each operator for the following time:. j8 r( u$ T4 @" M' M0 d" ^
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  l, J7 |( \3 N; ]) m3 W  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.
5 P  p2 r5 Q* A- L, p* w- N! U% h  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., w* n1 K: Z  q9 y! R
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.( h3 s' ~5 E" Z+ D& i, ^
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问题:* ]' k' o. n; G5 c* w
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 arriving9 A; W/ g1 X5 a
move into Q_wait /*Capacity is infinte*/+ @% D1 \% F8 }( m
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/$ e, t. B! e+ K! m/ Q

* F, f1 Q& c+ u9 `8 F2 L$ L6 xsend to P_B
+ U) W' L8 ~+ @end
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P_B and P_C is similar
8 B. s. [( O3 ?( W% ztriangular 30,60,90 min* b# V! x1 b8 \' P& r
u 60,30 min
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1 f$ i/ H3 C6 b! _9 K& {in P_C, you need to send to die./ B1 _8 u' N$ M$ l( R  t
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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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