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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,
/ M7 }, \3 o, b) D  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.
' Q8 Z! y$ R. P% y, {8 q5 J- y  Loads are processed by each operator for the following time:7 x2 I* w! w5 E, N3 |
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 A; i, I- t- U& X
  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) ?+ I9 c3 O% c% h  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
3 d" ^8 q7 R& V) r8 U/ OSend 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:6 h3 ?" z0 s7 f5 ]
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
0 {) m, Z! ?% x  w  @move into Q_wait /*Capacity is infinte*/
% B. ]! p$ K1 x' N$ H7 smove into Q_process /*Single capacity*/2 [9 C# z9 u# N& Z. ~

  |  v( F% V5 R) \4 _7 r- v* L$ zuse R_A for n 60,10 min /*Resource A*/4 t! G' B" D7 S1 M
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send to P_B
* V* @$ L+ O/ oend
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) {/ d7 [  y' K. ~5 O; C) W* w- |P_B and P_C is similar
5 P' K! Z2 n& _5 q8 u1 Ltriangular 30,60,90 min
) R9 Z% l( b4 h+ Du 60,30 min
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in P_C, you need to send to die.
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# O( m; O* S) ?5 {* bThen 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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