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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,* U8 W5 m* U4 @" T) _
  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.
: V! ^6 H. Q8 L) u: n  Loads are processed by each operator for the following time:
% L% |" P, q" ]* V3 N  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
0 W* K0 T) R7 y$ P  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.9 W5 m: T  q0 z7 |9 ~/ L; E
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 S) b2 c7 B  o% YSend 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:+ _4 E* C  u0 A0 p7 ?
After running the model for 10,000 days, what was the average number of loads in each process?) t) S  F% {1 _/ v

. C  n$ ~$ i  d/ ~5 f# z# p不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving2 K3 h& V, i$ k) `+ H  Y) b
move into Q_wait /*Capacity is infinte*/% [% m6 q( P8 p, G3 w7 T/ `
move into Q_process /*Single capacity*/
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# C& R9 {2 v. \! ^) v- ~use R_A for n 60,10 min /*Resource A*/) \2 C  Z4 F6 E  x3 i6 `/ ^" i! F
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send to P_B* B. o+ _5 e2 {9 y; |* a2 i
end. f$ r' a; l4 c8 b' A9 e3 Y

# A9 y0 D' W  z! ]& vP_B and P_C is similar
) k) H3 s. Q/ h+ ktriangular 30,60,90 min
' i; v% ~/ R* Su 60,30 min" o6 t- D1 l* Y# w- ~( i- M8 s
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in P_C, you need to send to die.
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" A# _, e7 c3 @4 uThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.5 O) _* O5 v' m$ g6 I

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7 ?. B" \4 a# sRemember 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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