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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,+ q# _: {# |. ^* z
  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.
8 P3 }- m7 f3 l6 f3 j  Loads are processed by each operator for the following time:
# a& D2 R' f1 ?. A6 z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." }+ ?3 ?+ X3 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.; N9 l# I' m4 W; r- q
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.: N: b; f9 q! o( y8 g1 C
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:
7 }6 O! S( y1 q4 XAfter running the model for 10,000 days, what was the average number of loads in each process?9 ^" _( g, I  n4 F. f9 a% L5 K2 f& Y0 _
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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 arriving7 F7 C+ ~( a, ]/ n0 u! ~/ _
move into Q_wait /*Capacity is infinte*// o1 {6 y) o1 R4 G: Q9 ?
move into Q_process /*Single capacity*/3 b! U7 d. u3 {& S/ {8 m* i
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use R_A for n 60,10 min /*Resource A*/8 _: F' V/ p* P

1 @' k3 N" f, a1 |8 u# Q1 _send to P_B) V: w9 k$ A8 [$ i! Y! o9 A1 j
end: B- `" m! \7 A! G$ T2 b

2 V" Q1 G7 c1 Y4 I7 V' tP_B and P_C is similar  b& i& p# k+ j5 [
triangular 30,60,90 min8 t/ [" D9 f" h+ X4 |' e
u 60,30 min# c7 k6 R# r$ Z# Q! g; X: e

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in P_C, you need to send to die.
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4 M3 g7 I" Y( H7 s+ LThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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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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