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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,
9 C- F( c* }/ b: q+ }% t: Y; d# Z, W  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.$ o8 x1 h( ~* A2 `! g  G7 [7 u
  Loads are processed by each operator for the following time:
3 ^/ N/ {  A4 G" G0 j) s  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) ~+ f$ b1 O! a5 q
  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.
( Y* J- Q: K4 q0 k% d0 T  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: ?) U# c, t4 ^8 J
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.7 {9 W" }: ~# s& o. V

9 G3 T. F) _" C, I) ]问题:( d, _5 U( o9 V3 x- l% ?
After running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving3 F& P# u1 E8 P% m
move into Q_wait /*Capacity is infinte*/
0 [% f* g5 Y4 M/ _move into Q_process /*Single capacity*/% g/ }: N& v6 R7 V* n; a5 I
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use R_A for n 60,10 min /*Resource A*/2 Z5 _* r' f- ?6 U& C
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send to P_B, p0 X% U/ \' T6 \6 _; v
end7 X" B# _& ^% i+ z) `/ ^
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P_B and P_C is similar
# Y$ W* ^4 O) J; itriangular 30,60,90 min8 a, K6 e% N& H" j
u 60,30 min+ C% A4 [) q! x0 @
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' @+ r/ x; Z" Q; m5 h# Sin 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.* k9 \3 ]& Y! s- C0 ]
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0 d* R+ M: X/ p: _; K! }3 @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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