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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,$ o/ \8 `( ~/ [) A5 e# f- S/ p1 k
  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.% P4 [; O# P4 h' g. Y
  Loads are processed by each operator for the following time:! {# V& Z: R$ i6 L+ F; T$ s) o
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
6 H; t, J4 a* b2 z! {& I% r  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.9 i5 K* {) E) p& C6 [" W
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.9 K2 i- R  i. o) p4 ?& W
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.: s% Z# ]/ s5 j! G" p
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问题:
9 D9 r% p5 o0 h+ cAfter running the model for 10,000 days, what was the average number of loads in each process?
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, F. Q6 l! v* q2 [不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
$ F: r, [- z* O, X" zmove into Q_wait /*Capacity is infinte*/- R2 ^9 Q6 U' U- j4 _+ I
move into Q_process /*Single capacity*/& o# y- `; P# P& c

  C  `1 Q$ D1 yuse R_A for n 60,10 min /*Resource A*/, N. ~# p; F' G; _
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send to P_B
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3 h! U4 r: a2 r/ i& H3 i* l3 MP_B and P_C is similar. [$ n4 G7 B; W; Q
triangular 30,60,90 min7 ?1 G7 u& c! k+ A, q2 i0 a8 L: D" H
u 60,30 min: [0 R6 x9 d+ A/ W! M7 U" q% n$ H

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2 [6 e; z) s. ~# B! C$ l5 m! Min P_C, you need to send to die.
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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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' `. _  H& U7 B9 U$ dRemember 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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