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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,
/ K+ E7 I; y) K1 [1 f& r  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.4 s" U: |% v9 Z1 K" n) L' D
  Loads are processed by each operator for the following time:) s8 o4 Z! g; _# O; B5 ~
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 h* g; o  p. V; v5 A- {9 ?5 l: u  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.
) Q9 R: Q% G/ w1 ~: X1 ^/ f  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
& r# |1 Y$ ?3 v1 \& k# ^2 ]- k+ JSend 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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" t1 s" H9 W3 x$ f$ [, n问题:9 w! L' a% J/ F0 {' j
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 arriving6 F7 g7 O( L. M- |2 F
move into Q_wait /*Capacity is infinte*/( Z, W! g- `- \
move into Q_process /*Single capacity*/6 [* g0 u- w; Q6 {9 |( C) D' |
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use R_A for n 60,10 min /*Resource A*/4 U% F/ v3 @- P# R* r- o! I) H
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send to P_B3 I' O; S7 `4 \: G  }9 u
end, c% q$ p; X: i& c

8 b/ @' R& F. b# L1 uP_B and P_C is similar) t7 H) B3 A3 @5 T
triangular 30,60,90 min- l- Y( f* U( m
u 60,30 min
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6 {* J6 j; O; a# I" Q5 p' ~+ D! bin P_C, you need to send to die.) c% a+ X, O. L* l
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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.
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# I( J: W3 M$ T- Q. \8 j* |2 ?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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