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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,' M' q6 g8 I% N! s' m! G
  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.
" j" q5 Q0 d, \2 S0 q4 c( m  Loads are processed by each operator for the following time:; a# s. k6 z8 H( G0 m0 [
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
/ _% E; U( i4 \( b  m  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.7 [+ K- u  h( n( _) _
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
- [* z9 x5 d: ]/ k' WSend 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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8 G/ X% U) n) Q6 o, @* Y9 Z问题:# Y/ n( i: U3 J
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
8 P0 `4 |1 O9 G8 p- e  Q2 o% G) F5 B. dmove into Q_wait /*Capacity is infinte*/
& p; e; Y7 S' |( j1 }move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/& y. w5 k" G6 t8 @+ q8 b" V

3 c5 @6 f2 ]0 I; Osend to P_B
4 o4 J$ s+ T" u' l' K8 M) Send) I- e9 b5 F4 ^( o. q

+ w8 Q! `# A0 h0 N' \P_B and P_C is similar
  x9 L$ r4 F/ F+ u9 ^3 Vtriangular 30,60,90 min1 C  v: n5 h0 m8 \/ z7 J7 p
u 60,30 min- D5 N/ s! |8 o3 |/ x! w. U6 H+ h

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in P_C, you need to send to die.; K/ ~- D! [( \
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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.' S! B0 d- K  P5 P  W

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. @* `5 h% i0 d* vRemember 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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