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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,) z- p9 `; M6 `3 A8 n; e4 a
  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.1 \1 P3 L# N3 E- A) h
  Loads are processed by each operator for the following time:
5 d" @  c( Y# z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.5 ]7 s$ N! f- W* Z# k5 s
  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.# B) L# y7 `2 W# p9 N0 Z
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 i% ~) y3 [% W, a1 A5 lSend 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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5 \1 T" [% T2 C) b0 ^" P4 ^" C问题:9 Y( ^8 F( q) M4 f. j# N' o
After running the model for 10,000 days, what was the average number of loads in each process?
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2 N. M. Q" F+ W' s. Y# \2 Z不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving4 P9 G+ M/ {/ {7 }1 j" B/ u: |* N
move into Q_wait /*Capacity is infinte*/
' G7 n, L2 r+ w- m! N$ ^' Zmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
4 i/ n/ q" l. [# T+ I# }end! S8 R7 y8 u; P* k1 D) s" c
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P_B and P_C is similar
4 b7 o. g( m+ p- |triangular 30,60,90 min5 |8 }/ c- a- }6 e8 Y& r* d. J
u 60,30 min
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in P_C, you need to send to die.* r( ~2 @# r% l
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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.( R6 K) S3 J$ r! w: ^- u7 X

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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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