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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,! B  k' A, R4 M$ a" b" E& 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.
9 v3 Y8 e) W( r$ W  Loads are processed by each operator for the following time:8 r( W* F/ d8 F3 f6 {
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 ~3 F/ O7 U) e" H" ?/ D& f  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.
; W' t5 _: F+ n7 W! y6 ~! b) ~7 w& }  a  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.6 r0 r3 J- P8 f0 K" U' i
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.; H* C5 r) @; `: A5 `& m

9 C- K$ Y4 ?2 l问题:$ t; l2 q! J+ [% s2 X% d: @
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 arriving5 O, T3 t. v! m
move into Q_wait /*Capacity is infinte*/
% e) I0 J3 k0 o( |move into Q_process /*Single capacity*/' j  U# b/ A) u  v
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use R_A for n 60,10 min /*Resource A*/
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. i3 _5 f" a- n) B) D# Osend to P_B
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. B6 T% v9 K' }. U  _& G9 {8 h5 }P_B and P_C is similar
& x0 Z1 e0 K( M$ I) T4 u( ftriangular 30,60,90 min
0 ^- _) X  |  z7 {9 A2 ]u 60,30 min
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' a& @+ l$ e) o* y! Cin 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.3 B$ X" D3 r) h, K/ ]% L( h' q

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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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