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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 ]7 x8 T6 }' q# ^, [  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.
6 C! Q: m9 g4 Z- G3 G  Loads are processed by each operator for the following time:8 F1 W6 e  k# H0 |
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
' _( I1 o8 _0 I9 O7 a# D, w  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.! R6 d2 }$ m4 b, W2 I( ?
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 y9 B1 I0 v, N8 c3 q$ ESend 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.  s, a7 ~1 T8 i% L5 j. N7 M
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问题:  S$ z- d$ L1 A0 Q5 A3 O/ A1 g
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  t/ |  P. S+ G+ d7 n! S* x
move into Q_wait /*Capacity is infinte*/
) o! m2 E; Y) a; e1 a/ |, mmove into Q_process /*Single capacity*/2 D. I; R9 k% t7 g! S8 J3 N
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use R_A for n 60,10 min /*Resource A*/
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6 A$ @$ S; N( k+ q% c$ Rsend to P_B/ Y& h3 e. t. w2 q" s( ?" D
end
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0 v5 w. Q$ O. {3 tP_B and P_C is similar. M4 O4 e' z+ U
triangular 30,60,90 min
3 F1 G" ^1 q- i+ O+ w. A. ku 60,30 min# ?* X3 }% E3 C# a& v4 Q

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in P_C, you need to send to die.1 F! D+ E3 L4 _5 z$ v' c1 H

7 E; K0 m0 s- u) 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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