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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,
$ x4 }' ?' w8 V; U4 m  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.
$ k7 x( S+ f# f6 U  Loads are processed by each operator for the following time:
% V$ e, d: G" J+ i: Z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins./ G7 s- T& {1 x* h
  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.
6 ~. ~& O$ ?$ D5 l* H/ O& ~  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 W( p; k' u* H7 ^/ XSend 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.% M5 n+ l( I; E1 _8 W5 L. [  r1 \
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问题:+ X* e! n' J. Z/ R3 y# {/ n4 R
After running the model for 10,000 days, what was the average number of loads in each process?  k, |# V* N9 w2 h; {

- C' \7 k+ I8 e/ r4 U不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
% n4 D" F2 o& L& |move into Q_wait /*Capacity is infinte*/* ~2 G) L+ S5 X
move into Q_process /*Single capacity*/: i$ c3 D: I9 c

& K: u8 p4 B7 ~use R_A for n 60,10 min /*Resource A*/2 w8 r$ z/ ^7 @9 A1 n# Z3 S/ \6 [# d

* p' U7 W) M4 S* F+ ?send to P_B
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P_B and P_C is similar2 s7 H$ @2 j& v# H
triangular 30,60,90 min( G. J7 h# J" z
u 60,30 min, e& H9 a5 n* ?2 w$ L7 n( e% I
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in 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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2 C2 F( F# h/ M+ Q5 k
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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