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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,
4 D0 C+ r" t! S- T/ n9 d! F8 L, R  U% A  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.) E& f# v9 D( q. p  [) h/ E
  Loads are processed by each operator for the following time:
/ L8 O5 |: M3 z! c4 D1 C1 r  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! K% B+ f- V4 F& m
  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.
" O' K' e2 e. j* e* v! `  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 H1 p4 Z# {$ V1 U# tSend 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.
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问题:
3 u9 {6 f2 r3 L( j; }+ }After running the model for 10,000 days, what was the average number of loads in each process?
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: v- T' }( p0 W4 `5 @' v- u4 m不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
7 @3 ?! u* K+ I8 U" w  B# Bmove into Q_wait /*Capacity is infinte*/
% ~- c: x: T6 bmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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send to P_B# N; A+ s2 S9 }' `" f
end
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$ \2 B; Z3 I6 V( aP_B and P_C is similar& W! ]4 R5 U# K% T  F4 q/ R
triangular 30,60,90 min4 w! D7 ]2 H1 d
u 60,30 min
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/ w3 W6 }" [/ Kin P_C, you need to send to die.
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2 W' ~0 S+ ^9 l7 ?2 I  x5 @Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.( J9 z/ @/ m8 _0 k

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& g2 X0 M1 x: i; U- H2 s" }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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