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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,
9 j! G  e4 N, C( X6 I  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.) F5 T! F: \6 u. J
  Loads are processed by each operator for the following time:
2 `% {6 [5 g9 [/ z# G8 `, @  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 U* i- v" r9 N; j+ U4 H8 L  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.% n* Z& j; D- J
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
/ c, Z1 Z8 u4 n8 A, g6 g4 a7 V" hSend 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.5 O. w. v: F8 F3 s% X

" a" W) n  g) I' ~; y: o  f' }问题:1 t; f3 K  m# y6 C% s, R+ `2 q. E! L
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
+ m& ^6 m) e$ fmove into Q_wait /*Capacity is infinte*/
+ d# P& x. n3 I  j9 kmove into Q_process /*Single capacity*/
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$ B1 r: V7 s3 S6 Z$ j6 y% S" x( nuse R_A for n 60,10 min /*Resource A*/
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1 j% u. ~- j. E7 e4 _' y$ gsend to P_B
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P_B and P_C is similar$ o5 X4 l4 _/ U* {0 F4 d' [
triangular 30,60,90 min
. g1 j! v+ C+ |* ~u 60,30 min
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in P_C, you need to send to die.
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" o: \' V* ^) @0 r: e4 V! iThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.! O, s/ `4 t4 Y$ P; v
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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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