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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,
/ @8 l" p8 S( \# a$ R) H  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.
6 Q+ T) h) s9 H  Loads are processed by each operator for the following time:
, _. H/ y3 ?. x+ d2 @6 H* P  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
3 d: B& l" ?4 R: q0 V, t  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.4 d0 z, W7 \/ w
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 p/ X* x9 n4 s; }6 {
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.
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问题:
+ n4 P& Q" F7 F! a& D. \After running the model for 10,000 days, what was the average number of loads in each process?7 A+ |5 @+ B6 w# O  d! }
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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: z* F/ W. j% d# d2 a& j' J. \0 Q
move into Q_wait /*Capacity is infinte*/
( u5 d4 b3 T: b9 i3 |$ m$ @  m' Jmove into Q_process /*Single capacity*/: I- j1 W' X, d) j

9 j3 b5 Q$ t5 m8 ?use R_A for n 60,10 min /*Resource A*/
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send to P_B/ @+ A- i) q- Y1 j5 v0 l
end
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; r' @% q; I0 S5 }- r' w7 aP_B and P_C is similar$ q( \& U5 N( \& Q! E' ]0 h
triangular 30,60,90 min" i# {# W4 u" {0 W3 O
u 60,30 min
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( ~. Y/ e9 @/ min 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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& U* ^1 }2 B" G4 ^) FRemember 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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