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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,
- Q6 L7 n/ o( q1 `" k  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.
& Y% n/ d5 J6 R2 h  Loads are processed by each operator for the following time:3 x% G/ T) ^) G& b. G7 `% y
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
9 P; D; k/ h! O  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.
+ u8 |7 D. s& s& Z& h( m  B9 f* B- ?  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
2 ?+ e' K; Q; z* eSend 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.
# o: L( ^7 O2 e: G! f, a  V
, ^6 I3 }* }# J+ ?  b- n% z: A问题:
/ l3 I' o" U, x$ u4 _/ UAfter running the model for 10,000 days, what was the average number of loads in each process?
9 f+ F# P  @$ `. ]8 |7 N& R# o% y% k9 C/ I
不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
, W4 j' T' X7 P  |+ umove into Q_wait /*Capacity is infinte*/
/ j% N3 `9 \, g" H8 Wmove into Q_process /*Single capacity*/
2 M* f; z6 C3 o0 Z9 o
: @# N" F  J* z# ?use R_A for n 60,10 min /*Resource A*/
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send to P_B1 w) y- U! K5 |0 z# [
end
  Q  Q- N: ?, b) n- M1 J9 q
- h6 ]# f: w% _4 C) A6 K; `P_B and P_C is similar! V- K$ I9 z5 ]7 _
triangular 30,60,90 min
2 N+ z# L) I; Iu 60,30 min
+ Q) O% O/ o/ E' ?2 l* p1 E! \2 @5 T) `  C8 y! f9 p! p

# S8 z6 Y5 J' q! S, R: W1 Nin P_C, you need to send to die.
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* }. i4 s4 r' W  U% fThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.3 K& U% g/ x' r6 s) _
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- m2 A8 I; P+ e5 dRemember 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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