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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,7 ?" D% a: L7 n; [
  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 `+ C( ?( ^3 W5 e; h
  Loads are processed by each operator for the following time:
8 ]0 c) ?3 B; ?9 ~  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 t) y5 K& o1 V, `% ]. p' j* 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.
: Q$ f3 @; Y/ ]# Q- B+ X* Q3 ^  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 a! m4 a% e8 @9 }) T0 t# G
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:
3 ~7 A9 U" s, V9 ?% _0 V: _# }After running the model for 10,000 days, what was the average number of loads in each process?' s. F% S; P! Z- a, r5 Q
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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
, v) V' {6 [3 ?0 H/ @9 b6 f3 nmove into Q_wait /*Capacity is infinte*/, i- u, {+ F+ \( Y
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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  w& P2 a% d! _0 }send to P_B% n1 G! }, E! A
end
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P_B and P_C is similar
: T6 b& t7 h" f+ Htriangular 30,60,90 min, Z8 R8 E& q/ o7 U
u 60,30 min2 s" }5 @7 Z3 X; x1 _9 f. k' F

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in P_C, you need to send to die.; U. T  h. B! f! ~) B  b! y
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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.1 X  G7 h1 n; s" \$ D$ I
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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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