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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,
3 t3 M) X' r& k6 X+ 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.
7 x: j4 e: U. p4 d( l* L. |  Loads are processed by each operator for the following time:5 Q7 p0 c0 H5 X' K
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 V2 D0 h- W$ A+ K" d
  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.! y& r% P+ X+ }$ q9 n4 E0 w
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' x% [/ ^) r/ H: C
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.! N6 {6 z, N6 p: w

7 S! [4 N: @3 L问题:3 q/ d# L7 G. H7 }1 F
After running the model for 10,000 days, what was the average number of loads in each process?
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9 }+ [# c% w6 D! ?% Q不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 O9 F- g7 I2 S- t
move into Q_wait /*Capacity is infinte*/4 B' B0 ^& y# K$ k
move into Q_process /*Single capacity*/( B: G; u7 z7 a/ L1 h  l& d: p

. [) P% T! l8 ?  m2 e8 }use R_A for n 60,10 min /*Resource A*/
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/ `& ?8 V! j" I0 ]& R2 w( @send to P_B
) x1 }7 n, I# u; L$ o: l9 ]end( X- L. B6 ?) m

8 L( Y" l* _+ k; J, r' cP_B and P_C is similar- f3 i& T, a( Z% z- {7 N8 S$ w
triangular 30,60,90 min
  F) ]) b* V$ P% ]6 U; H& G" G% Pu 60,30 min
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in P_C, you need to send to die./ e' J' ~$ T, `: A8 K" \; ^( 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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