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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,
/ u) m8 D2 U7 P1 v" L- k# t5 p  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.
2 M# Z+ B, ]1 y- [, @% a  Loads are processed by each operator for the following time:
9 v9 O  C: K5 A3 c  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 o$ X$ o5 T. A3 ^5 B
  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.
3 j4 B% g% U" k* H) t4 l8 I' N  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' `9 A7 a, `+ l) cSend 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.7 g+ l2 E, h& T# y* f# k, [
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问题:
8 u$ ?0 M# R& S. e& ]# a! X- mAfter running the model for 10,000 days, what was the average number of loads in each process?) E0 k$ K, s! v7 }: |5 A0 W! J

* k4 g# k& E5 D  s# n1 g9 x不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  u; T+ j% T# {" z* `
move into Q_wait /*Capacity is infinte*/. x. z+ {( j4 _/ q8 \. Z4 W1 o
move into Q_process /*Single capacity*/
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: v% Y/ h* C2 B9 @use R_A for n 60,10 min /*Resource A*/: Z' ]3 v- ]3 y# B+ r" w

7 f6 v3 y8 N$ M& z* Asend to P_B
5 l# |, O4 t4 \7 J( H+ d, @end/ r* t3 |' s3 `. g. u
4 ]" P0 ]: h) n2 w7 ]
P_B and P_C is similar! \9 q8 u' h5 y8 c* x: C
triangular 30,60,90 min
- W! [( e- a( s( p! pu 60,30 min
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in P_C, you need to send to die.! Q6 v* {2 c4 j$ O3 N6 S0 u
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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.; B) k9 F( l/ P6 a0 ]
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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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