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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,1 _( T+ @$ O7 F( Q! P* j! t9 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.
. g( y8 I0 m3 B0 M+ c) _  Loads are processed by each operator for the following time:5 U7 A! d! ?  m3 z- O$ ~
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.2 P" m! {/ y0 F8 S
  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.
( f# m3 C! }. E0 g  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
: F9 ~0 b: U" bSend 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.9 j% O5 W& k5 o! T

* {( z: b' e: k* r4 I9 z$ a问题:: g) R+ E# i/ G5 ^* e
After running the model for 10,000 days, what was the average number of loads in each process?
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$ Y' `& }: I0 C$ Z  H/ v# w不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
  L. R( b  Q/ hmove into Q_wait /*Capacity is infinte*/
7 L; Z' {+ `+ y7 i6 lmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/8 x5 q* }" _; j: b/ D3 f7 J
5 x- n& A: K" T( ^
send to P_B( T9 k& A: Q* F2 \; t
end! B8 m* F" t, h6 k" k
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P_B and P_C is similar/ j" }0 A0 t' N
triangular 30,60,90 min
7 q2 X$ v) o) }u 60,30 min" F! P3 p& y0 {7 \" m
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3 F: b/ {" T8 z1 m  q9 O+ Bin P_C, you need to send to die.2 F) s; u8 p( Z, ^$ }

1 C9 ^& |3 D2 f3 O9 @6 ?5 QThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.8 c1 _6 `" E! G+ r' k8 @! j

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& |4 R2 I# C' {8 O. G: Y0 U0 ]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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