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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,) W. b  G! m6 W$ R) Z% J
  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.
' S( E; D' z  a: j& ^2 l! l  Loads are processed by each operator for the following time:
# X" p0 w) ~! Z) A3 F' H  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& L  R# `  Q% V3 w" }' 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.
% I. P5 P7 C3 ?* ]  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
. q4 u% m4 N/ Q  GSend 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.* M0 P) r+ M/ q+ W) g% m

- P9 J/ m0 V* q: N2 p问题:/ {/ G7 s5 a: u* w9 s
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
1 _  z+ E: X$ H$ O* nmove into Q_wait /*Capacity is infinte*/
1 e$ r' U  l7 {+ p  S8 Jmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/0 I) }4 r  x' T- d( V1 c
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send to P_B. g/ W! f0 z# d2 q
end
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P_B and P_C is similar
  M! p# N% A; m/ [triangular 30,60,90 min
* _# f9 q1 B3 K0 U0 n. _u 60,30 min
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: }1 S. N$ w3 s' X/ G/ ?2 C) i* v# Zin P_C, you need to send to die.
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" q' _: s$ b: x+ h7 jThen 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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