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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,2 A. T  @- \( ?* h9 B) h
  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.- A. b( p- L( ^- ~5 Q
  Loads are processed by each operator for the following time:% j* K  l  s4 k% A. |
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 m/ Q' y& ?8 n4 f0 O' B* \  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.. U9 U! {8 p1 [1 T: n- d8 k
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.& z  m9 T# X' P
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.! p: i% r3 Q0 k" I. o
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问题:$ C9 F$ `( f+ ?6 O
After running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
( S$ s5 ?9 X  E+ z: nmove into Q_wait /*Capacity is infinte*/4 J' Z+ L+ q5 B- z
move into Q_process /*Single capacity*/
# C- c3 o. s0 W  Q6 z0 n7 q/ I4 M/ Y: S
use R_A for n 60,10 min /*Resource A*/
# R7 v$ N) b* M: w3 c4 t, Q! W/ K  k6 [
send to P_B
" D+ Z1 C& E6 v: A: [  e  ?end
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P_B and P_C is similar: P' h& v" ?- U6 ~; t3 i
triangular 30,60,90 min
) h6 ~1 d  y: @+ l! V5 p) bu 60,30 min
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) ^' _, `6 `- I1 n' b( g% jin P_C, you need to send to die.* D  t0 N6 r' g+ m

" `7 ^- x5 a8 i% n' OThen 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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